Maintenance & Technical > KX500 Original
Exhaust pipe tuning
Polar-Bus:
I remember reading an article in MXA about the effects of adding .250" thick spacer rings inside a CR250 cylinder headpipe to alter the torque output. On the dyno there actually were very different hp and torque #'s. Adding spacers shifted the torque curve higher in the rpm range. So for a bike that feels flat on over-rev, those spacers were the hot ticket.
BigGreenMachine:
How about reshaping a pipe to fit a different chassis? I need to turn the pipe around to exit on the opposite side as the KX500.
So my question is;
How does the flow/bends of the pipe affect performance?
demographic:
By the looks of it I reckon Mun knows his stuff about spannies
You can get computer programmes to work out the cones and so on and it sure as hell isn't as simple as it looks.
Mota is one of the programmes I have heard of and you can buy it here..http://www.iwt.com.au/MOTA.HTM
Theres a free programme on that page but I don't have the foggiest notion how good it is, it's here..
http://www.users.bigpond.net.au/arrowkarts/private/Pipe_dsn.zip
After you realise thats it's too much like hard work these lot might be worth contacting ...
http://www.dmax.ca/
John:
Alternativly, get Mun on the case...
Mun has hand crafted pipes and published dyno charts in this forum.
He's the Man.
//John
demographic:
Judging by the dyno sheets Muns tuning does seem to be rather effective also :-D
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