Uphill Racers

Go Back   Uphill Racers > Technical > Engine & Chassis
Register FAQ Members List Calendar Downloads Mark Forums Read

Reply
 
Thread Tools Display Modes
  #11  
Old 15-12-17, 21:00
stevieturbo stevieturbo is offline
Senior Member
 
Join Date: Jul 2012
Location: Norn iron
Posts: 926
stevieturbo will become famous soon enough stevieturbo will become famous soon enough
IMO speak to the clutch people, there is no doubt they can do a lot more than what is listed on a catalogue.
Reply With Quote
  #12  
Old 17-12-17, 10:21
Mad Prof's Avatar
Mad Prof Mad Prof is offline
Member
 
Join Date: Jan 2015
Location: Long Crendon
Posts: 51
Mad Prof is on a distinguished road
Cerametallic sprung clutch disk

Quote:
Originally Posted by Hillman View Post
Just had a look at the Helix website. The 56-1000 (3 paddle) & 56-2000 (4 paddle) series paddles require the use of a Helix cover plate.
Yes Hillman, you are quite right. I use:
Clutch Cover: 63-210 (184mm lug drive) fitted with “R” springs 220 lbf-ft min torque capacity (my engine 180 lbf-ft max) and mounted with NAS bolts and K-nuts.

You also need to consider the clutch release bearing.

Happy Christmas all
Reply With Quote
  #13  
Old 18-12-17, 13:00
chevman47 chevman47 is offline
Senior Member
 
Join Date: Jan 2009
Posts: 290
chevman47 is on a distinguished road
Thanks everyone for your help. I have now decided to fit the single plate sintered AP clutch.
Reply With Quote
  #14  
Old 18-12-17, 18:49
Eric_M's Avatar
Eric_M Eric_M is offline
Member
 
Join Date: Dec 2008
Location: Leicestershire
Posts: 69
Eric_M is on a distinguished road
Chevman
I have run an 184mm organic plate with a Quatermaster cover for the last few years. It gives a beautifully controlled start, and not a hint of slip once up and running. I changed from an AP sintered type after braking two Imp Transaxles. Since changing to organic I have not broken a box.
The main downside is the covers have a much higher leverage ratio to give the clamp force and being designed for sintered type plates, they cannot accomodate much wear. I ended up machining 1mm off the lugs of the cover and making my own shims up, so I can adjust for wear. I can now make a plate last a season, but I have to remove the engine every 5 events and re-shim the clutch. I have also found a place to reline the plate for £40.
It seems to work - a 1.97 sec start with a 2 wheel drive 49 year old Hillman Imp at Loton Park this year, seems to illustrate that.

Eric
Reply With Quote
  #15  
Old 18-12-17, 19:35
chevman47 chevman47 is offline
Senior Member
 
Join Date: Jan 2009
Posts: 290
chevman47 is on a distinguished road
That,s impressive, Eric.
Reply With Quote
  #16  
Old 18-12-17, 20:04
stevieturbo stevieturbo is offline
Senior Member
 
Join Date: Jul 2012
Location: Norn iron
Posts: 926
stevieturbo will become famous soon enough stevieturbo will become famous soon enough
True..something that can easily be overlooked. Organic/kevlar type clutches can be slipped very easily, as can a normal road car.

When launches are all important, having a clutch you have a lot of control over can be a very good thing.
There are even various products to try and regulate the release of the clutch clamp to assist with launching. Which will be easier with an organic vs a metallic type disc.

You could say carbon is somewhere in the middle of those....but in my experience with carbon and clutches...that can be a whole can of worms
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 02:02.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Copyright© 2007-2018 Uphill Racers www.uphillracers.com