Slipper Clutch, back torque limiters call them what u want
Slipper Clutch, back torque limiters call them what u want
(OP)
Ok, slipper clutches assuming that we all know what they are & the basic principle of operation (if not ask!)
I'm convinced that they are of serious benefit to the racers among us, & even to those of us that just have fun on the street or track.
But my latest race bike has not got one, & the idea of shelling out another £700 is painful (all racers are financially broke). So I pose the following question to you all.
I’ll give you my thoughts later, I tried this at work & told them my ideas & I got loads of expansion on the ideas but no new ones!
Given that the slipper clutch is essentially de-coupling the engine (crank) from the transmission, when the rear wheel speed is higher than the engine speed (for the given transmission ratio). Are we not tackling this from the wrong end? Should we not be limiting the engine characteristic so that the engine spins up to speed easily, i.e. no compression?
To aid this we all run high tickover speeds dependant on circuit, up to 3000rpm
Your thoughts please, Mechanical, Electrical
Arron
I'm convinced that they are of serious benefit to the racers among us, & even to those of us that just have fun on the street or track.
But my latest race bike has not got one, & the idea of shelling out another £700 is painful (all racers are financially broke). So I pose the following question to you all.
I’ll give you my thoughts later, I tried this at work & told them my ideas & I got loads of expansion on the ideas but no new ones!
Given that the slipper clutch is essentially de-coupling the engine (crank) from the transmission, when the rear wheel speed is higher than the engine speed (for the given transmission ratio). Are we not tackling this from the wrong end? Should we not be limiting the engine characteristic so that the engine spins up to speed easily, i.e. no compression?
To aid this we all run high tickover speeds dependant on circuit, up to 3000rpm
Your thoughts please, Mechanical, Electrical
Arron





RE: Slipper Clutch, back torque limiters call them what u want
Regards,
MB
RE: Slipper Clutch, back torque limiters call them what u want
Regards,
MB
RE: Slipper Clutch, back torque limiters call them what u want
The question is not what is out there but what else could we do in stead?
for example, why dont we run 5000rpm tickovers, cos at hairpins we'd get pushed through the corner etc.
So what would the benefit ( under heavy braking, for a chicaine) be of telling the Fuel injection the throttle is shut (so only put in fuel for 2500rpm) but the throttle bodies are actually held fully open. therfore less engine braking? ingnoring the issue of transition on and off etc. Just alternatives to the ramp style slipper clutch
Arron
RE: Slipper Clutch, back torque limiters call them what u want
kcj
RE: Slipper Clutch, back torque limiters call them what u want
My FZR1000 had a dog bearing on 3 clutch plates and only worked in forward motion...The bad thing about that is there must have been a design flaw, as the clutch gave up the ghost and locked the rear. Put me on the ground..
My thinking is why have any motor braking it will put you much deeper in the corner and you'll be so surprised when you make it through....
Cheers
RE: Slipper Clutch, back torque limiters call them what u want
What I can say is if I get an injected bike to 9000rpm in first and kill the engine on the stop switch with the throttle dropped to idle & glide to a stop on engine braking, I stop a lot quicker than if I do the same with the throttle wide open.
Arron
RE: Slipper Clutch, back torque limiters call them what u want
One of the bigger benefits of a slipper clutch
Arron
RE: Slipper Clutch, back torque limiters call them what u want
The whole idea is to control rear whell chatter/hop under heavy braking.
Regards,
MB
RE: Slipper Clutch, back torque limiters call them what u want
Yes, there should be more braking with throttles shut, as engine is acting as vacuum pump pulling through the butterlfies, doing work.
With throttles open, more air mass goes through but there isn't the throttling loss to suck against. The work put into compression roughly equals the work gotten back when the compressed air expands on expansion stroke, so that is somewhat of a wash.
One of the differences between gas engines and diesel, not as much engine braking with diesel, no throttles.
sorry for misinformation
kcj
RE: Slipper Clutch, back torque limiters call them what u want
respectfully
RE: Slipper Clutch, back torque limiters call them what u want