Page 1 of 1
Velocity stacks blue or red????
Posted: Sun Nov 06, 2011 10:17 pm
by jic44
Just bought a set of flatslide carbs and im wondering what is the difference in the blue velocity stacks and the red ones... If any! cheers lads.
Re: Velocity stacks blue or red????
Posted: Wed Nov 09, 2011 1:00 am
by Mori Man
Blue 50mm and spec'd for the FIII tuning (I use these)
Red 35mm and commonly used - generally with smaller MJ
You also get Black & Green too
Re: Velocity stacks blue or red????
Posted: Sun Nov 13, 2011 4:46 pm
by AFM327
Anyone have a set of blue ones they want to sell? I need a new set of stacks and it would be good to compare the different sizes on the dyno.
Re: Velocity stacks blue or red????
Posted: Mon Nov 14, 2011 12:24 am
by Mori Man
Think I have this the right way round.
Shorter = more acceleration
Longer = more top end
If you look at drag bikes they usually run with 15mm or nothing at all on them eeking out every bit of power they can.
http://keihincarbs.com/special/STACKS/gate.html
They only ones that step out of this equation are trumpets made by Yoshimura which they call dual velocity stacks and these increase power through the whole range.