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Re: [turbobike] Boost Controllers

John C Williamson (john.williamson5@virgin.net)
Sun, 23 May 1999 00:36:39 +0100

I think I might have missed the previous mail somehow but (I'm guessing - you want more boost?)

To increase the boost just let out some air from the pipe that goes to the waste-gate from the inlet manifold, via a jet of some
kind, preferably adjustable (needle valve), I used to use a solenoid supplied by a airline specialist (12v - like a nitrous / fuel
solenoid) that opened in high gears, or when I pushed a button..

It then takes more pressure (due to the pipe dia. ) to open the diaphram wastegate.

Actually I ran a roadbike, that went to high(er) boost and N2O + 6 degrees less advance, when you pushed THE button. 2nd stage of
gas came in during gear 3 due to the gear position sensor, not ideal but not enough thumbs left...


----- Original Message -----
From: <ABNZX9@aol.com>
To: <turbobike@natvideo.com>
Sent: 22 May 1999 21:53
Subject: Re: [turbobike] Boost Controllers


> Would that be the boost pressure line that goes to the turbo from say the
> intake plenum?
>