Haynes Forums  

Go Back   Haynes Forums > Haynes Roadster Forums > Donor cars
FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Display Modes
  #11  
Old 26th October 2012, 07:22 PM
snapper snapper is offline
Senior Member
 
Join Date: May 2007
Location: Chelmsford, Essex
Posts: 360
Default

If your going to race avoid start would be to find what speed others are getting on the straight.
No point topping out at 110 if others fly past you
Get a gear ratio program then you can find your speed in gears with available diff ratio and tyre size
Reply With Quote
  #12  
Old 27th October 2012, 12:05 AM
matt_long247 matt_long247 is offline
Junior Member
 
Join Date: Oct 2012
Posts: 8
Default

That's a good point I'd not really thought about tbh. Il have to do some more research on the 750 forum on that and try find what ratios others are using for theirs. Im new to the whole kitcar/ racing thing so I'm sure there many other things I may have over looked. Can you think of any other key ones?
Reply With Quote
  #13  
Old 27th October 2012, 11:43 AM
snapper snapper is offline
Senior Member
 
Join Date: May 2007
Location: Chelmsford, Essex
Posts: 360
Default

Weight
If your running 500Kg and others are 450Kg you've got a lot to make up
Initially though you want to be near enough in weight power and gearing to be in with a chance.
Andy Bates at AB Performance is a great bloke to talk to and will give you some pointers
Reply With Quote
  #14  
Old 28th October 2012, 08:54 PM
matt_long247 matt_long247 is offline
Junior Member
 
Join Date: Oct 2012
Posts: 8
Default

Ill be trying to reduce weight through out the build as much as possible. Luckily I'm only small anyway. Haha. Thanks iv just had a look at his website. Il Definatley give him a ring an see what tips he can share with me.
Reply With Quote
  #15  
Old 28th October 2012, 10:23 PM
PorkChop PorkChop is offline
Senior Member
 
Join Date: Jul 2011
Posts: 394
Default

The longest MX5 diff you will find is a 3.6:1.

Your chosen bike engine will play a huge part in if your diff is long enough. I did consider a BEC using MX5 running gear and if you're using a fairly modern bike engine, then a 3.6:1 diff would be long enough (based on the gear ratio calculator I have).
Reply With Quote
  #16  
Old 30th October 2012, 02:23 PM
matt_long247 matt_long247 is offline
Junior Member
 
Join Date: Oct 2012
Posts: 8
Default

i dont suppose you can confirm which models have the 3.6:1 diff?
and its going to be dans zx9r setup i think
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

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT +1. The time now is 12:21 AM.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.