RCU Forums - View Single Post - Supercharge help
View Single Post
Old 10-03-2007 | 10:32 AM
  #14  
Flyboy Dave's Avatar
Flyboy Dave
My Feedback: (21)
 
Joined: Mar 2002
Posts: 13,864
Received 10 Likes on 10 Posts
From: Pinon Hills, CA
Default RE: Supercharge help

.....that's where an additional boost port with a reed assy. would work good. Generally
speaking, it's not wise to mess with the transfer ports too much. You can raise them a tad,
but don't mess with the angles.

But like Motorboy said, the pipe does the most benefit. Once the compression is set, and
the optimum port timing is settled in, it's all about the fuel and the pipe.

I put a reed plate, a Mikuni carb, and a homemade pipe on this Grand Prix racing bike of
mine and won some races in my younger days. I was a good port-man too.

I had this old four speed Bultaco factory bike cranking as hard a humanly possible. I determined
later that a good piston port engine will make more HP than the reed set-up, but this worked
good in this application, because I only had 4 speeds. Reed plates help with the torque though.

I would venture a guess, that if we were going to pressurize the crancase with a supercharger,
a reed system would be needed to keep from losing pressure back out the intake.

FBD.
Attached Thumbnails Click image for larger version

Name:	Ca81019.jpg
Views:	26
Size:	38.2 KB
ID:	775743