WoKe
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| posted on 9/11/11 at 04:03 PM |
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Slipperclutch on a BEC?
Does anyone run a BEC that has a slipperclutch?
Reason for asking is that I have a R1 2005 chain-diff singleseater where the pedals are placed pretty uncomfortable to be able to heel-and-toe
downshift. I guess a slipperclutch could come in handy to avoid rear-wheel lockup and excessive clutch wear when aggressively downshifting before
cornering.
The current clutch has been re-enforced (stiffer springs I guess).
Anyone experienced with slipperclutch in a track-BEC. Do they work with stiffer springs?
Does it improve handling, or worsen it?
Thx,
Wouter
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martylemoo
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| posted on 9/11/11 at 04:18 PM |
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http://www.flatshifter.com/
That is your answer.
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eddie99
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| posted on 9/11/11 at 04:28 PM |
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Flatshifter, if you want any more details, send me a u2u, im a reseller for the flatshifter and can probably do something better than the RRP price 
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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Bare
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| posted on 9/11/11 at 04:41 PM |
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Purpose of a Slipper clutch on a Moto (at least on mine :-) Is to prevent rear wheel lock up as you downshift for a corner at racing speeds. This
simply has NO relevance to a car. Short answer is: on a 7 type machine, a 100% unecessary.. and probably very annoying As it reduces what little
compression braking there is to near none.
Discard it IMO.
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WoKe
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| posted on 9/11/11 at 04:59 PM |
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quote:
Originally posted by Bare
Purpose of a Slipper clutch on a Moto (at least on mine :-) Is to prevent rear wheel lock up as you downshift for a corner at racing speeds. This
simply has NO relevance to a car. Short answer is: on a 7 type machine, a 100% unecessary.. and probably very annoying As it reduces what little
compression braking there is to near none.
Discard it IMO.
It does have relevance for a car, why would one doe heel-and-toe in a car? Why would one install an autoblip system.
To avoid rear-wheel lockup as you downshift for a corner while racing since rear-wheel lockup unsettles the car, causes masstransfer, etc ...
I don't want my clutch, gearbox, engine do the braking for me, I do have brakes for that.
So are there any arguments against a slipperclutch in a bec?
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WoKe
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| posted on 9/11/11 at 05:02 PM |
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quote:
Originally posted by eddie99
Flatshifter, if you want any more details, send me a u2u, im a reseller for the flatshifter and can probably do something better than the RRP price
U2U sent
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Andy B
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| posted on 9/11/11 at 06:05 PM |
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Our experience using slipper clutches in the RGB series with the Sabre racecars and the 08 blades has been excellent, no need to try and match engine
and road speed means you can thump down the box much quicker without risking an over rev or spin as you lock up the rear. No need to heel and toe and
much smoother and stable entry to corners under braking.
To date we have run 2 hard seasons and the net mechanical work has been 1 clutch plate set and oil and filter changes, lap times are faster and the
benefits in the wet are unreal, at Cadwell in the wet we were 5 seconds ahead on lap one and 28 seconds clear at the finish. The drivers love the
slipper set up and so do I as it makes for far less time consuming maintenance repairing gearboxes and bent valves, yes you have to use the brakes
harder but thats what they are there for.
regards
Andy
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joni
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| posted on 9/11/11 at 06:10 PM |
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quote:
Originally posted by Andy B
Our experience using slipper clutches in the RGB series with the Sabre racecars and the 08 blades has been excellent, no need to try and match engine
and road speed means you can thump down the box much quicker without risking an over rev or spin as you lock up the rear. No need to heel and toe and
much smoother and stable entry to corners under braking.
To date we have run 2 hard seasons and the net mechanical work has been 1 clutch plate set and oil and filter changes, lap times are faster and the
benefits in the wet are unreal, at Cadwell in the wet we were 5 seconds ahead on lap one and 28 seconds clear at the finish. The drivers love the
slipper set up and so do I as it makes for far less time consuming maintenance repairing gearboxes and bent valves, yes you have to use the brakes
harder but thats what they are there for.
regards
Andy
hi andy what about a slipper clutch on a fireblade 929 bec
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Andy B
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| posted on 9/11/11 at 06:51 PM |
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Hi
I think a slipper would be a benefit and will look into availability for the 929 if you want me to, I do know of a firm that contacted me that said
they would produce one for any engine and application but I will need to get a quote for one. Give me a bell on 01449 736633 and I will tell you what
I know
Regards
Andy
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WoKe
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| posted on 9/11/11 at 09:14 PM |
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quote:
Originally posted by Andy B
Our experience using slipper clutches in the RGB series with the Sabre racecars and the 08 blades has been excellent, no need to try and match engine
and road speed means you can thump down the box much quicker without risking an over rev or spin as you lock up the rear. No need to heel and toe and
much smoother and stable entry to corners under braking.
To date we have run 2 hard seasons and the net mechanical work has been 1 clutch plate set and oil and filter changes, lap times are faster and the
benefits in the wet are unreal, at Cadwell in the wet we were 5 seconds ahead on lap one and 28 seconds clear at the finish. The drivers love the
slipper set up and so do I as it makes for far less time consuming maintenance repairing gearboxes and bent valves, yes you have to use the brakes
harder but thats what they are there for.
regards
Andy
Great!
Thats the kind of experience i was hoping for.
I'll order one this winter ... Aftermarket type and using some stiffer springs
Thx,
Wouter
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coyoteboy
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| posted on 11/11/11 at 11:16 AM |
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quote:
urpose of a Slipper clutch on a Moto (at least on mine :-) Is to prevent rear wheel lock up as you downshift for a corner at racing speeds. This
simply has NO relevance to a car
What?! One of the biggest control problems we had with our new single seater drivers was them downshifting into a corner and locking the rears and
ending up in the gravel. While it could of course be worked around with improved skill and training, it's not irrelevant.
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