|  | Topic : SWINGING ARM BOLT |  |
| | | davehumphrey | | Set |  | | Reg. Date | : | 24/03/2018 | | Posts | : | 18 | | Location | : | Australia |
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| | Posted : 24 Mar 2018 - 09:20 Post title : SWINGING ARM BOLT | | | SAFETY MESSAGE: I want to bring this to the attention of Thunderbird riders. At around 22,000 km the swinging arm bolt broke on my 2015 Thunderbird! I was going 110 KPH when it partly came out enough for the bike to go out of control! Lucky for my wife and I, I was able to control the bike and come to a stop I thought I had a back wheel blow out until I saw the bolt hanging out of the frame. This was repaired under warranty. I have now done 56,500 km and again the swinging arm bolt broke again, but this time I Knew what it was so I stopped straight away before the bolt came out. IF AT ANY TIME YOU ARE RIDDING AND YOU FEEL A BANG THROUGH THE BIKE LIKE SOMEBODY HAS HIT THE FRAME WITH A LARGE HAMMER YOU WILL PROBERLY FIND THE SWINGING ARM BOLT HAS BROKE!!!!!!!! I bought this to the attention of Triumph. At first I thought great they have got back to me straight away asking me to take it to a Triumph dealer, that I did where they could not find why it broke! "There has to be a reason". I can not see a reason for it myself. "But shit it is a very scary thing when it comes out and I feel this could end up being fatal" In the end Triumph said you can have a free bolt. "Whoopy Dooooo" Looking at the bolt it is of bad quality and is hollow! "Why is the bolt HOLLOW for Christ sakes" In my books it is a weak point and that Triumph should put out a call back and rectify this before someone is killed! I have had my own swinging arm bolt made from silver steel (this is the only steel made with the strength required of the O.D required 17mm) The specs required to make this bolt is: 17 mm Diameter silver steel bar 355 mm in length, Threaded both ends the same as the OEM thread + another nut and spacer for the left hand side. Spacer spec: 26 mm x 6 mm with 17 mm centre hole. The spacer is so that you can hold the nut on that side because the reassess in the frame stops you from getting onto the nut to hold it. Make sure that after fitting the new bolt that it does not pultrude anymore than 4mm out of the frame and does not fowl the cooling header tank. Apparently I am not the only person this has happened to! TRIUMPH YOU NEED TO DO SOMETHING PUT A SOLID BOLT IN IT WILL NOT MAKE THAT MUCH DIFFERANCE TO THE WEIGHT WILL IT?
apart from this the Thunderbird has not missed a beat and been round Australia twice now and bloody good bike.
From a very concerned customer.
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| | | Hornet | | Jupiter | |  | | Reg. Date | : | 05/05/2013 | | Posts | : | 1,294 | | Location | : | United States |
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| | Posted : 24 Mar 2018 - 12:04 Post title : Re: SWINGING ARM BOLT (Re: davehumphrey) | | | Thanks Dave for posting this important information. Guess I'll have a look and mine as well.
| You'll never be first but you might be next
2014 Commander
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| | | GerPa | | Jupiter | |  | | Reg. Date | : | 10/12/2011 | | Posts | : | 1,919 | | Location | : | Mackay, Central Queensland, Australia |
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| | Posted : 24 Mar 2018 - 12:17 Post title : Re: SWINGING ARM BOLT (Re: davehumphrey) | | |
davehumphrey wrote:
SAFETY MESSAGE: I want to bring this to the attention of Thunderbird riders. At around 22,000 km the swinging arm bolt broke on my 2015 Thunderbird! I was going 110 KPH when it partly came out enough for the bike to go out of control! Lucky for my wife and I, I was able to control the bike and come to a stop I thought I had a back wheel blow out until I saw the bolt hanging out of the frame. This was repaired under warranty. I have now done 56,500 km and again the swinging arm bolt broke again, but this time I Knew what it was so I stopped straight away before the bolt came out. IF AT ANY TIME YOU ARE RIDDING AND YOU FEEL A BANG THROUGH THE BIKE LIKE SOMEBODY HAS HIT THE FRAME WITH A LARGE HAMMER YOU WILL PROBERLY FIND THE SWINGING ARM BOLT HAS BROKE!!!!!!!! I bought this to the attention of Triumph. At first I thought great they have got back to me straight away asking me to take it to a Triumph dealer, that I did where they could not find why it broke! "There has to be a reason". I can not see a reason for it myself. "But shit it is a very scary thing when it comes out and I feel this could end up being fatal" In the end Triumph said you can have a free bolt. "Whoopy Dooooo" Looking at the bolt it is of bad quality and is hollow! "Why is the bolt HOLLOW for Christ sakes" In my books it is a weak point and that Triumph should put out a call back and rectify this before someone is killed! I have had my own swinging arm bolt made from silver steel (this is the only steel made with the strength required of the O.D required 17mm) The specs required to make this bolt is: 17 mm Diameter silver steel bar 355 mm in length, Threaded both ends the same as the OEM thread + another nut and spacer for the left hand side. Spacer spec: 26 mm x 6 mm with 17 mm centre hole. The spacer is so that you can hold the nut on that side because the reassess in the frame stops you from getting onto the nut to hold it. Make sure that after fitting the new bolt that it does not pultrude anymore than 4mm out of the frame and does not fowl the cooling header tank. Apparently I am not the only person this has happened to! TRIUMPH YOU NEED TO DO SOMETHING PUT A SOLID BOLT IN IT WILL NOT MAKE THAT MUCH DIFFERANCE TO THE WEIGHT WILL IT?
apart from this the Thunderbird has not missed a beat and been round Australia twice now and bloody good bike.
From a very concerned customer.
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Is this an LT or Commander Model Thunderbird?
|  May-2011-1600, 20306 Tune, Mustang Vintage Solo Seat, Meerkat Cat Bypass, + Meerkat Modified Short TORS   ,K&N Air Cleaner,K&N Oil Filter, JBQ lifting system, Gold Plug Magnetic Sump Plug,Dart Fly screen, Rivco Risers, GiPro Gear Indicator, Breakaway Cruise Control, Avon ISO Grips, Scorpion Western Low Handlebars, Kury Switchblade Pegs, Garmin Zumo390LM,Michelin RC2 on Front RC 3 on ,Modified Rear Drive Pulley Hub Bearings (Mat1600/Alex4 Modification) Front Susp: Std & 7.5W Oil /126mm Air Gap & Rear:Hagon Nitro's with 26Kg/cm Springs + Lots of other "Bling" stuff.
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| | | davehumphrey | | Set | | | Reg. Date | : | 24/03/2018 | | Posts | : | 18 | | Location | : | Australia |
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| | Posted : 24 Mar 2018 - 13:24 Post title : Re: SWINGING ARM BOLT (Re: GerPa) | | | It is an LT but I would think that if you checked it would be the same part. I can't see Triumph fitting two different bolts on the same frame design. Just keep what happened to me in mind if you feel the bang through the frame check it out by checking if the swinging arm bolt is loose. Ride safe.
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| | | davetac1 | | Thunderbird | | | Reg. Date | : | 06/09/2010 | | Posts | : | 8,379 | | Location | : | Haverhill, Ma., United States |
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| | Posted : 24 Mar 2018 - 15:27 Post title : Re: SWINGING ARM BOLT (Re: davehumphrey) | | | There is a torque spec on a cone nut [ya need a special tool to tighten or loosen it which can be viewed in the SM,] located inside the swing arm.[ya have lift the bike just enough to take the weight off the back wheel,yet allow the tire to still rest on the floor] then remove the outside nut on the long bolt that passes thru the swing arm,and gently push or tap that long bolt in just enough so as to access the cone nut.[that long bolt will be sticking out the left side of the machine 7 or 8 inches] After torquing the cone nut,push the long bolt back thru the swing arm and torque it to spec.
I know this cause mine was pretty loose,causing the swing arm to move side to side just enough to change the belts' alignment which created the infamous chirp that so many of us became sooooooooooooooooo familiar with. Not to mention,the dark color on either side of the belt where is was rubbing hard against either side of the rear cog and wearing on the belt.So once I figured out what was wrong and torqued it to spec,the belt stayed where I put it [in alignment] and all was well after that. Dave!!!
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| | | AZCactus | | Taranis | |  | | Reg. Date | : | 01/05/2013 | | Posts | : | 4,524 | | Location | : | AZ |
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| | Posted : 24 Mar 2018 - 15:51 Post title : Re: SWINGING ARM BOLT (Re: davehumphrey) | | | Good info, thanx. If the bolt design is flawed, I wonder what would increase its chance of failure. Engine torque, frame design, added weight (e.g. riding 2 up), combination of forces....??
| 2009 Thunderbird 1700 Big Bore
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| | | davetac1 | | Thunderbird | | | Reg. Date | : | 06/09/2010 | | Posts | : | 8,379 | | Location | : | Haverhill, Ma., United States |
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| | Posted : 24 Mar 2018 - 16:13 Post title : Re: SWINGING ARM BOLT (Re: AZCactus) | | | I don't see how it could fail.However,if the inner cone nut and or the nut that secures that long swing arm bolt which passes thru the frame, was NOT torqued properly,then,and only then,I could see a problem, which this gentleman obviously had.And I would attribute that to poor set up and or inspection by the dealer who is supposed to check these things "BEFORE" the customer takes delivery of the machine.OR,if someone else had done some work on it but did NOT double check his/her work. Remember,a two wheeler is NOT as forgiving as a four wheeler is. Dave!!!
| | Post edited by davetac1 on 24 Mar 2018 - 16:21 |
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| | | AZCactus | | Taranis | | | | Reg. Date | : | 01/05/2013 | | Posts | : | 4,524 | | Location | : | AZ |
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| | Posted : 24 Mar 2018 - 19:56 Post title : Re: SWINGING ARM BOLT (Re: davehumphrey) | | | davehumphrey wrote:
It is an LT but I would think that if you checked it would be the same part. I can't see Triumph fitting two different bolts on the same frame design. |
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Bolt may be the same but I understand (could be wrong) the LT/Commander frames are different compared to the original bike which may present different forces at play.
What's even more odd is it happened twice. Ride safe, enjoy the sunnyday. 
| 2009 Thunderbird 1700 Big Bore
| | Post edited by AZCactus on 24 Mar 2018 - 20:13 |
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| | | fab | | Thor | |  | | Reg. Date | : | 12/10/2009 | | Posts | : | 2,515 | | Location | : | wyong, nsw, Australia |
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| | Posted : 24 Mar 2018 - 20:43 Post title : Re: SWINGING ARM BOLT (Re: AZCactus) | | |
AZCactus wrote:
davehumphrey wrote:
It is an LT but I would think that if you checked it would be the same part. I can't see Triumph fitting two different bolts on the same frame design. |
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Bolt may be the same but I understand (could be wrong) the LT/Commander frames are different compared to the original bike which may present different forces at play.
What's even more odd is it happened twice. Ride safe, enjoy the sunnyday. |
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  for 2 bolts to break in that short of time there is something wrong, either with your bike or the installation of it
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Remember, soft cocks hang around all life long, hard ones come and go
ahh f**k im deep
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| | | davetac1 | | Thunderbird | | | Reg. Date | : | 06/09/2010 | | Posts | : | 8,379 | | Location | : | Haverhill, Ma., United States |
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| | Posted : 24 Mar 2018 - 22:59 Post title : Re: SWINGING ARM BOLT (Re: AZCactus) | | | Check the SM,if ya have one,or the parts fiche on Bike Bandit.Either one should show an exploded view of the swing arm and its' components.That should at least, give ya an idea of what broke,fell apart,or was assembled incorrectly.
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| | | GerPa | | Jupiter | | | | Reg. Date | : | 10/12/2011 | | Posts | : | 1,919 | | Location | : | Mackay, Central Queensland, Australia |
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| | Posted : 25 Mar 2018 - 03:58 Post title : Re: SWINGING ARM BOLT (Re: davehumphrey) | | | Dave Humphry, Which bolt are you talking about here? You make mention about the bolt being hollow
The Thru Bolt that retains the Swing Arm into the Frame of the motorbike ? or the Thru Bolt that retains the Wheel into the Swing Arm ?
The Front Bolt ( The Solid Steel Bolt) is called the Swing Arm Bolt, The Rear bolt ( The Hollow One) is called the Rear Axel Bolt.
| May-2011-1600, 20306 Tune, Mustang Vintage Solo Seat, Meerkat Cat Bypass, + Meerkat Modified Short TORS ,K&N Air Cleaner,K&N Oil Filter, JBQ lifting system, Gold Plug Magnetic Sump Plug,Dart Fly screen, Rivco Risers, GiPro Gear Indicator, Breakaway Cruise Control, Avon ISO Grips, Scorpion Western Low Handlebars, Kury Switchblade Pegs, Garmin Zumo390LM,Michelin RC2 on Front RC 3 on ,Modified Rear Drive Pulley Hub Bearings (Mat1600/Alex4 Modification) Front Susp: Std & 7.5W Oil /126mm Air Gap & Rear:Hagon Nitro's with 26Kg/cm Springs + Lots of other "Bling" stuff.
| | Post edited by GerPa on 25 Mar 2018 - 04:02 |
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| | | AZCactus | | Taranis | | | | Reg. Date | : | 01/05/2013 | | Posts | : | 4,524 | | Location | : | AZ |
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| | Posted : 25 Mar 2018 - 04:16 Post title : Re: SWINGING ARM BOLT (Re: GerPa) | | | Gerry, why don't you ask sunnyday 
| 2009 Thunderbird 1700 Big Bore
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| | | davehumphrey | | Set | | | Reg. Date | : | 24/03/2018 | | Posts | : | 18 | | Location | : | Australia |
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| | Posted : 25 Mar 2018 - 04:18 Post title : Re: SWINGING ARM BOLT (Re: davetac1) | | | There has only been work carried out on the swinging arm by Triumph dealers so I would have thought that one of the two that worked on the bike would have toruqed it properly!
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| | | davehumphrey | | Set | | | Reg. Date | : | 24/03/2018 | | Posts | : | 18 | | Location | : | Australia |
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| | Posted : 25 Mar 2018 - 04:27 Post title : Re: SWINGING ARM BOLT (Re: GerPa) | | | It is the rear bolt that passes through the frame that retains the swinging arm to the frame that you are calling the rear axle bolt! I have always known it as the rear swinging arm bolt.. The bolt has a Stainless steel dome nut on the left and the bolt itself is put through the frame from the right hand side behind the coolant header tank and it is hollow Both have been hollow so that must be correct! Triumph said it is hollow as well. What ever it is it's not very good?
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| | | davehumphrey | | Set | | | Reg. Date | : | 24/03/2018 | | Posts | : | 18 | | Location | : | Australia |
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| | Posted : 25 Mar 2018 - 04:39 Post title : Re: SWINGING ARM BOLT (Re: davetac1) | | | I will see if I can put the diagram up. The part is No 6 and the PART No is T3150143 from the Triumph dealer parts list. 
I have attached a couple of photo's of the bolt. 
| | Post edited by davehumphrey on 25 Mar 2018 - 09:12 |
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| | | GerPa | | Jupiter | | | | Reg. Date | : | 10/12/2011 | | Posts | : | 1,919 | | Location | : | Mackay, Central Queensland, Australia |
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| | Posted : 25 Mar 2018 - 06:37 Post title : Re: SWINGING ARM BOLT (Re: davehumphrey) | | | davehumphrey wrote:
It is the rear bolt that passes through the frame that retains the swinging arm to the frame that you are calling the rear axle bolt! I have always known it as the rear swinging arm bolt.. The bolt has a Stainless steel dome nut on the left and the bolt itself is put through the frame from the right hand side behind the coolant header tank and it is hollow Both have been hollow so that must be correct! Triumph said it is hollow as well. What ever it is it's not very good? |
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On the TB1600,1700 and TB Storms the Front Bolt ( Swing Arm Retaining Bolt) Part Number T2054088 that holds the Swing Arm to the frame is solid. The Rear Bolt ( Rear Axel Bolt that holds the wheel in the bike ) is Hollow. there were a few rear axle bolts that stripped the thread on them a few years ago.
It would appear that it is a LT & Commander Problem.
| May-2011-1600, 20306 Tune, Mustang Vintage Solo Seat, Meerkat Cat Bypass, + Meerkat Modified Short TORS ,K&N Air Cleaner,K&N Oil Filter, JBQ lifting system, Gold Plug Magnetic Sump Plug,Dart Fly screen, Rivco Risers, GiPro Gear Indicator, Breakaway Cruise Control, Avon ISO Grips, Scorpion Western Low Handlebars, Kury Switchblade Pegs, Garmin Zumo390LM,Michelin RC2 on Front RC 3 on ,Modified Rear Drive Pulley Hub Bearings (Mat1600/Alex4 Modification) Front Susp: Std & 7.5W Oil /126mm Air Gap & Rear:Hagon Nitro's with 26Kg/cm Springs + Lots of other "Bling" stuff.
| | Post edited by GerPa on 25 Mar 2018 - 06:47 |
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| | | Slcharger | | Jupiter | |  | | Reg. Date | : | 18/02/2016 | | Posts | : | 1,661 | | Location | : | Denmark |
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| | Posted : 25 Mar 2018 - 07:03 Post title : Re: SWINGING ARM BOLT (Re: davehumphrey) | | |
davehumphrey wrote:
SAFETY MESSAGE: I want to bring this to the attention of Thunderbird riders. At around 22,000 km the swinging arm bolt broke on my 2015 Thunderbird! I was going 110 KPH when it partly came out enough for the bike to go out of control! Lucky for my wife and I, I was able to control the bike and come to a stop I thought I had a back wheel blow out until I saw the bolt hanging out of the frame. This was repaired under warranty. I have now done 56,500 km and again the swinging arm bolt broke again, but this time I Knew what it was so I stopped straight away before the bolt came out. IF AT ANY TIME YOU ARE RIDDING AND YOU FEEL A BANG THROUGH THE BIKE LIKE SOMEBODY HAS HIT THE FRAME WITH A LARGE HAMMER YOU WILL PROBERLY FIND THE SWINGING ARM BOLT HAS BROKE!!!!!!!! I bought this to the attention of Triumph. At first I thought great they have got back to me straight away asking me to take it to a Triumph dealer, that I did where they could not find why it broke! "There has to be a reason". I can not see a reason for it myself. "But shit it is a very scary thing when it comes out and I feel this could end up being fatal" In the end Triumph said you can have a free bolt. "Whoopy Dooooo" Looking at the bolt it is of bad quality and is hollow! "Why is the bolt HOLLOW for Christ sakes" In my books it is a weak point and that Triumph should put out a call back and rectify this before someone is killed! I have had my own swinging arm bolt made from silver steel (this is the only steel made with the strength required of the O.D required 17mm) The specs required to make this bolt is: 17 mm Diameter silver steel bar 355 mm in length, Threaded both ends the same as the OEM thread + another nut and spacer for the left hand side. Spacer spec: 26 mm x 6 mm with 17 mm centre hole. The spacer is so that you can hold the nut on that side because the reassess in the frame stops you from getting onto the nut to hold it. Make sure that after fitting the new bolt that it does not pultrude anymore than 4mm out of the frame and does not fowl the cooling header tank. Apparently I am not the only person this has happened to! TRIUMPH YOU NEED TO DO SOMETHING PUT A SOLID BOLT IN IT WILL NOT MAKE THAT MUCH DIFFERANCE TO THE WEIGHT WILL IT?
apart from this the Thunderbird has not missed a beat and been round Australia twice now and bloody good bike.
From a very concerned customer.
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Definitely something off great concern. Do you by any chance have the broken bolt, Pictures of the bolt, and close up of the broken surfaces ?
| Big Bird, Bordeaux with " Celtic theme " Airbrush, 2010, 1700CC, ABS, 65.000 km. Lowered with Nitros rear shocks, Linear front springs, Burchard forward footrest kit, Kuryakyn ISO grips, LOTS of chrome, SLcharger REV2+ tune, Modified Cee Baileys windshield, Oil pressure gauge, Air box elimination kit, Portet cylinderhead, Intake cam advanved 8 degree, Exhaust cam retarded 2 degree, 10.5 C/R, Knock sensor, Machined flywheel, DNA Chrome Spoke wheels, 18x8.5"- AVON AV72- 240/40/18, 21x3.5"- AVON AV71- 120/70/21, Corbin seat with backrest, 20W fork oil. Hiflo HF303RC oil filter, Penrite Racing 20-20W60 engine oil, Adjurl lights.
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| | | davehumphrey | | Set | | | Reg. Date | : | 24/03/2018 | | Posts | : | 18 | | Location | : | Australia |
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| | Posted : 25 Mar 2018 - 09:15 Post title : Re: SWINGING ARM BOLT (Re: Slcharger) | | | Attached are some photo's of the broken bolt hope you can see what you want  
| | Post edited by davehumphrey on 25 Mar 2018 - 09:18 |
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| | | davehumphrey | | Set | | | Reg. Date | : | 24/03/2018 | | Posts | : | 18 | | Location | : | Australia |
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| | Posted : 25 Mar 2018 - 09:21 Post title : Re: SWINGING ARM BOLT (Re: GerPa) | | | No it was the bolt that holds the Swinging arm in the frame not the rear wheel!
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| | | davetac1 | | Thunderbird | | | Reg. Date | : | 06/09/2010 | | Posts | : | 8,379 | | Location | : | Haverhill, Ma., United States |
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| | Posted : 25 Mar 2018 - 09:58 Post title : Re: SWINGING ARM BOLT (Re: davehumphrey) | | | I can tell ya right now what happened now that I've seen the bolt!! It was WAAAAAAAAAAAY over tightened.And that's exactly what the factory will tell ya.That's why they have torque specs so things like that do NOT happen.So the next question is: Have ya had any work done on it????????Who's the last person that worked on it?? If it's still new,then it's either the dealer or it came from the factory like that.If so!!! SHAME ON THEM as that could have had serious consequences,and I would let them know about it!!I would think you can get another swing arm bolt from them,NO CHARGE,unless some one else did some work on it.
Or,I'm pretty sure you can buy that part from Bike Bandit.
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| | | AZCactus | | Taranis | | | | Reg. Date | : | 01/05/2013 | | Posts | : | 4,524 | | Location | : | AZ |
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| | Posted : 25 Mar 2018 - 10:14 Post title : Re: SWINGING ARM BOLT (Re: davehumphrey) | | | davehumphrey wrote:
I will see if I can put the diagram up. The part is No 6 and the PART No is T3150143 from the Triumph dealer parts list.
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Your part and or part # is incorrect.
| 2009 Thunderbird 1700 Big Bore
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| | | Hornet | | Jupiter | | | | Reg. Date | : | 05/05/2013 | | Posts | : | 1,294 | | Location | : | United States |
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| | Posted : 25 Mar 2018 - 11:01 Post title : Re: SWINGING ARM BOLT (Re: AZCactus) | | | Gentlemen, this appears to be an LT/Commander part as referenced. As a Commander owner should I be worried just because this bolt is hollow ?
I believe both wheel axle bolts are hollow as well. If these bolts are properly torqued should this be a concern?
I do know one other owner with an LT this happened to.
| You'll never be first but you might be next
2014 Commander
| | Post edited by Hornet on 25 Mar 2018 - 11:11 |
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| | | davetac1 | | Thunderbird | | | Reg. Date | : | 06/09/2010 | | Posts | : | 8,379 | | Location | : | Haverhill, Ma., United States |
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| | Posted : 25 Mar 2018 - 14:40 Post title : Re: SWINGING ARM BOLT (Re: Hornet) | | | If it's torqued "CORRECTLY" you should be OK cause it's really somethin that ya don't see that often.But I would check the torque on it anyways [loosen it then retorque it] just to be on the safe side.Dave!!!
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| | | Slcharger | | Jupiter | | | | Reg. Date | : | 18/02/2016 | | Posts | : | 1,661 | | Location | : | Denmark |
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| | Posted : 25 Mar 2018 - 18:32 Post title : Re: SWINGING ARM BOLT (Re: davehumphrey) | | |
davehumphrey wrote:
Attached are some photo's of the broken bolt hope you can see what you want |
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My best guess is as follows. ( the fracture should be examined under microscope, to determine the exact cause ).
Although the pictures are a bit blur, they show that this bolt has been heat treated. The purpose was probably to surface harden the bolt, to avoid wear, but by accident, the bolt got hardened all the way through, only leaving a fraction of the tensile strength ( fine grain ). That means the bolt has no tough core, besides the leveled part of the fracture ( about 20% of the area, coarse fracture lines ). The surface hardening should not have been deeper than 0.5 mm. or less. The rest of the material should have been tough ( tempered ). From the pictures you also can tell that the fracture happened in two stages, shown by the rust on one side, where water penetrated the first fracture, some time before the final fracture.
Anyway, this is probably a batch problem, so a lot of bikes could be affected by this problem. Triumph should be able to tell from what VIN# to what VIN#, by looking up in their manufacturing records.
| Big Bird, Bordeaux with " Celtic theme " Airbrush, 2010, 1700CC, ABS, 65.000 km. Lowered with Nitros rear shocks, Linear front springs, Burchard forward footrest kit, Kuryakyn ISO grips, LOTS of chrome, SLcharger REV2+ tune, Modified Cee Baileys windshield, Oil pressure gauge, Air box elimination kit, Portet cylinderhead, Intake cam advanved 8 degree, Exhaust cam retarded 2 degree, 10.5 C/R, Knock sensor, Machined flywheel, DNA Chrome Spoke wheels, 18x8.5"- AVON AV72- 240/40/18, 21x3.5"- AVON AV71- 120/70/21, Corbin seat with backrest, 20W fork oil. Hiflo HF303RC oil filter, Penrite Racing 20-20W60 engine oil, Adjurl lights.
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| | | Leethal | | Zeus | |  | | Reg. Date | : | 24/01/2011 | | Posts | : | 6,407 | | Location | : | Australia |
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| | Posted : 25 Mar 2018 - 22:33 Post title : Re: SWINGING ARM BOLT (Re: GerPa) | | | I wonder if the dimensions of the broken bolt are the same as the solid Tbird one, if so I'd be using the solid one.
| Experience is something you get just after you needed it
1600,Foran Razorbacks, Meerkat bypass, Dyno tune, real headlight,plenty of chrome,switchblade pegs, Hagon Nitro shocks & Ikon progressive fork springs etc. Scorpion Western Low handlebars. PH adjustable fork caps.
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| | | Hornet | | Jupiter | | | | Reg. Date | : | 05/05/2013 | | Posts | : | 1,294 | | Location | : | United States |
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| | Posted : 25 Mar 2018 - 23:42 Post title : Re: SWINGING ARM BOLT (Re: Leethal) | | |
Leethal wrote:
I wonder if the dimensions of the broken bolt are the same as the solid Tbird one, if so I'd be using the solid one. |
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Good thought, how can we determine if they are the same ?
| You'll never be first but you might be next
2014 Commander
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| | | davetac1 | | Thunderbird | | | Reg. Date | : | 06/09/2010 | | Posts | : | 8,379 | | Location | : | Haverhill, Ma., United States |
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| | Posted : 26 Mar 2018 - 02:08 Post title : Re: SWINGING ARM BOLT (Re: Hornet) | | | You could try comparing the size and or length of the two swing arm bolts in a parts fiche like Bike Bandit or one of those parts places.Naturally,they would have different part numbers,but they usually list the length and diameter.It won't hurt to take a look!! 
| | Post edited by davetac1 on 26 Mar 2018 - 02:10 |
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| | | Leethal | | Zeus | | | | Reg. Date | : | 24/01/2011 | | Posts | : | 6,407 | | Location | : | Australia |
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| | Posted : 26 Mar 2018 - 07:13 Post title : Re: SWINGING ARM BOLT (Re: Hornet) | | | Well, long shot but maybe Kim still has his out for the modded swingarm and the broken one can be measured, failing this then Dave's suggestion is easy to check.
| Experience is something you get just after you needed it
1600,Foran Razorbacks, Meerkat bypass, Dyno tune, real headlight,plenty of chrome,switchblade pegs, Hagon Nitro shocks & Ikon progressive fork springs etc. Scorpion Western Low handlebars. PH adjustable fork caps.
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| | | Slcharger | | Jupiter | | | | Reg. Date | : | 18/02/2016 | | Posts | : | 1,661 | | Location | : | Denmark |
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| | Posted : 26 Mar 2018 - 10:21 Post title : Re: SWINGING ARM BOLT (Re: Leethal) | | |
Leethal wrote:
Well, long shot but maybe Kim still has his out for the modded swingarm and the broken one can be measured, failing this then Dave's suggestion is easy to check. |
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Mine is a hollow one too.
| Big Bird, Bordeaux with " Celtic theme " Airbrush, 2010, 1700CC, ABS, 65.000 km. Lowered with Nitros rear shocks, Linear front springs, Burchard forward footrest kit, Kuryakyn ISO grips, LOTS of chrome, SLcharger REV2+ tune, Modified Cee Baileys windshield, Oil pressure gauge, Air box elimination kit, Portet cylinderhead, Intake cam advanved 8 degree, Exhaust cam retarded 2 degree, 10.5 C/R, Knock sensor, Machined flywheel, DNA Chrome Spoke wheels, 18x8.5"- AVON AV72- 240/40/18, 21x3.5"- AVON AV71- 120/70/21, Corbin seat with backrest, 20W fork oil. Hiflo HF303RC oil filter, Penrite Racing 20-20W60 engine oil, Adjurl lights.
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| | | Slcharger | | Jupiter | | | | Reg. Date | : | 18/02/2016 | | Posts | : | 1,661 | | Location | : | Denmark |
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| | Posted : 26 Mar 2018 - 10:43 Post title : Re: SWINGING ARM BOLT (Re: Hornet) | | |
Hornet wrote:
Gentlemen, this appears to be an LT/Commander part as referenced. As a Commander owner should I be worried just because this bolt is hollow ?
I believe both wheel axle bolts are hollow as well. If these bolts are properly torqued should this be a concern?
I do know one other owner with an LT this happened to. |
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Hollow or solid, in this case it doesn't make any difference. The hollow one has sufficient strength to cope with whatever you throw at it, IF it has the specified material properties. The problem is that due to heat treatment errors, the bolt in the above pictures is far outside specified values, and has reduced or close to no strength.
The dangerous part here, is that you can't tell if they are faulty or not, without destroying them, in test. ( unless you have a metallurgical lab ).
If it's a missing tempering problem, it can be solved by putting the bolt into your kitchen oven, and "bake" it for 3-4 hours at 300-350 C. My guess is that the material used is a low carbon alloyed steel, so any "baking" below 250 C will not have any positive effect. If the bolt already is okay, it will suffer no damage, during "baking", but if it is quenched and not tempered, it will regain its strength and toughness.
From the picture, it don't appear to be nitrated or carbonized in the surface, so i believe it a tempering problem.
| Big Bird, Bordeaux with " Celtic theme " Airbrush, 2010, 1700CC, ABS, 65.000 km. Lowered with Nitros rear shocks, Linear front springs, Burchard forward footrest kit, Kuryakyn ISO grips, LOTS of chrome, SLcharger REV2+ tune, Modified Cee Baileys windshield, Oil pressure gauge, Air box elimination kit, Portet cylinderhead, Intake cam advanved 8 degree, Exhaust cam retarded 2 degree, 10.5 C/R, Knock sensor, Machined flywheel, DNA Chrome Spoke wheels, 18x8.5"- AVON AV72- 240/40/18, 21x3.5"- AVON AV71- 120/70/21, Corbin seat with backrest, 20W fork oil. Hiflo HF303RC oil filter, Penrite Racing 20-20W60 engine oil, Adjurl lights.
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