VTS knife edged crank

1. adamhighfield Frequent Poster Joined: Jan 2007 Shrewsbury Posts: 642 Saxo VTS

   #1 8th March 2007, 22:30

   Hi everyone
   Does anybody know what is special about a knife edged crank.
   What difference does it make & how?
   Thanks, ad
2. KamRacing Saxperience Addict Joined: Nov 2006 A farm shed in Aylesbury Posts: 14916 Corolla AE86 Peugeot 205 B18C (in bits)

   #2 8th March 2007, 23:56

   its when the counterweights on the crank are knife edged to reduce turbulence and parasitic drag.
   
   Makes it move more efficiently, which for a rotating mass is a good thing
3. nick_dunkley L-plater Joined: May 2006 Posts: 68

   #3 9th March 2007, 22:23

   Bear in mind rotational mass is 8x static, you weigh that puppy up!
4. boz Saxperience Post Whore Joined: Jan 2005 somewhere on this planet, doing something..... around northumberland or in the middle of the sea Posts: 8774 Mk2 VTS track mk1 turbo vts scooby engined 2CV

   #4 9th March 2007, 23:04

   i would not bother unless you had tuned your car up to the hilt. there are better mods to do your car before that. unless yours is already tuned up to the nuts, then go for it
5. adamhighfield Frequent Poster Joined: Jan 2007 Shrewsbury Posts: 642 Saxo VTS

   #5 10th March 2007, 12:30

   i already have forged pistons, conrods, rally cams, p+p head, throttle bodies etc. I am building the engine up at the moment.
   
   What do u think?