|  | Topic : Talk the Torque |  |
| | | Micko | | Set |  |  | | Reg. Date | : | 14/05/2010 | | Posts | : | 1 | | Location | : | Townsville, Australia |
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| | Posted : 15 May 2010 - 06:41 Post title : Talk the Torque | | | Can anyone explain to me the theory of a torque compensator and why it has been fitted to the bird. The reason I ask the question is my bike has developed a loose/rumbly( for want of a better word) feeling come through the left side foot rest.I have had a look in the shop manual and no wear limits are indicated so assume that under normal operation on movement exists between the moving parts or maybe someone can enlighten me on this. I would like to hear from any else if they noticed this an well
Regards
Micko
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| | | mad_angler1 | | Chaac | |  | | Reg. Date | : | 18/10/2009 | | Posts | : | 511 | | Location | : | United Kingdom |
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| | Posted : 17 May 2010 - 22:15 Post title : Re: Talk the Torque (Re: Micko) | | | If you were riding at a constant 3000 rpm, imagine that the straight line in the below pic was your power, in theory power delivery would be nice and uniform just like the centre line , however in reality its not, with large pistons you get little surges in torque, the power delivery really is like the sign wave on top of the line, constantly fluctuating up and down, this give a very lumpy ride, to smooth this out the Torque compensator comes in, as you can see from the manual its two plates with triangles, one with ditches and one with spikes, behind them a load of springs that push the two plates together, one plate is attached to the crank and the other to the clutch, all drive goes through these plates, they allow movement each way, as they rotate they move apart, the triangles pushed them apart against the springs, this means they are under constant tension, although they can move they cant totally rotate separately, they are designed to rotate a certain distance each way then bind up against the springs, this means any surges that occur get swallowed up by the movement in the plates.
ps ignore the voltage references.
as for noise i doubt it would be this as its a very highly sprung item, i have been in there when i did my BB kit, the only thing it could be is the clutch leaver assembly or the chain connecting the compensator to the clutch.
EDIT, i posted about the compensator before, below is what i wrote.
2: Torque Compensator, this bike is fitted with one on the crank before the clutch, its possible when slamming open there is so much power the compensator is kicking in and reducing power then as the bike speeds up it gives it back, but having looked into how it works in the manual i don't believe it fully restricts the power, it seems to be designed to just smooth out jump in power, its basically a clutch but instead of having multiple plates it has a plate that attaches to the crank with three triangle spikes that stick out of it, then these spikes go into corresponding holes in the drive gear behind it, the drive gear does not attach to the crank its self it get only gets spun by this plate, behind both of these is a series of spring washers pushing the lot together, so when the torque overloads the two plates start to turn out of sequence, because the spike are triangular means as this happens they separate out from each other against the springs, the thing i am not convinced about is that the two plates can rotate completely away from each other, from looking at the manual it looks like there would only be movement of a few cm each way before it locks up, this would not be enough to reduce power it would just smooth out pulses of torque.
| | Post edited by mad_angler1 on 17 May 2010 - 22:18 |
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