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Re: [turbobike] t-2 turbo Buell

Jeff Churchill (jcperformance@juno.com)
Thu, 21 Oct 1999 11:37:16 edt

John,
    because of space considerations on the low mounted turbo,..I've
removed the wastegate assy and substituted  a spring to hold the  bypass
flapper closed,..I just experimented with spring tension to get the boost
right.   Its in keeping with my  KISS
philosophy,.....I'll probably have to install a real wastegate in the
exhaust pipe eventually.

Jeff Churchill

J.C. Performance    617-06  Bicycle Path   Port Jefferson Station   NY  
11776    USA
tech:  516-928-6679  or  516-928-9863
website:     http://www.jcperformance.com/


On Wed, 20 Oct 1999 18:37:44 +0100 "John Williamson"
<john.williamson5@virgin.net> writes:
> What sort of wastegate do you have?
> 
> You could possibly set the boost lower for normal use and have a 
> (horn?)
> button to increase boost when you want it.
> Tee into the air tube that goes to the wastgate from the plenum, and 
> run it
> too a small 12v air solenoid (available from hydraulic and airline
> specialists) Wire it to open when you push the button, so that the 
> boost
> that is trying to open the wastgate escapes. You don't want too much 
> to
> escape or the boost will not be controlled at all. So fit a 'jet' or 
> needle
> valve into the end, and leave this pipe open to atmosphere.
> 
> Now low boost is as set up normally and high boost is as you set the 
> needle
> valve or jet.
> 
> JOHN.
> 
> ----- Original Message -----
> From: Jeff Churchill <jcperformance@juno.com>
> To: <turbobike@natvideo.com>
> Sent: Wednesday, October 20, 1999 5:55 PM
> Subject: [turbobike] t-2 turbo Buell
> 
> 
> > Dear fellow enthusiasts,
> >     Just finished dyno testing the 1200 cc  Buell with new T-2 
> setup.
> > 126  rear wheel HP  @  10 psi      105 ft lbs torgue       pump 
> gas and
> > water injection
> > 143      rwHP    @   13 psi        117 ft lbs  torque    50/50  
> pump/race
> >   +   water injection
> >
> >   The last  combo is fairly difficult to  use in the first three 
> gears
> > with the new Dunlop 207's
> > Since it is a street bike  i don't want to consider chassis 
> mods,...I'd
> > love some advice on variable boost techniques.  I know it doesn't 
> seem
> > like much to you multi-cylinder overhead cam guys,....but 
> hey,...its an
> > old fashioned twin,....now 31,000  original miles too !
> >    Can you tell I'm happy ?   The 55 mm  wheel base  makes it 
> exciting !
> >
> > Thanks for listening
> >
> > Jeff Churchill
> >
> > J.C. Performance    617-06  Bicycle Path   Port Jefferson Station  
>  NY
> > 11776    USA
> > tech:  516-928-6679  or  516-928-9863
> > website:     http://www.jcperformance.com/
>