"My apologies Col....I only saw a the second part of your post and didn't realise you were replying to a previous question.
I take it you were assuming , in your reply, that the engine was already in existence. Apparently it is a new model."
"Col, you say that the IAME engine to be used was already in their product range. In the review document this engine is described as being specifically designed and developed for Karting Australia and intended to be taken to the world market by IAME.…"
At Proserpine use 10:75 gear; use a 36mm short power mac header and a chain of your choice to suit. Set exhaust length to 380mm from exhaust header flange to the end of the muffler's cone. This will be a good starting point for…"
Best bet would be to search on eBay USA for the Rupp parts and be prepared to pay big bucks . Do a search for Robron Inc and email Robert Stanton as he may be able to help.
For a McCulloch engine , I can recommend Terry Ives in California…"
My answer to your question is NO. It is my view that a Medium axle is the best choice most of the time....just vary the length to suit the prevailing conditions. A shorter axle will usually assist in making the kart more agile through…"
My humble opinion as follows…..if the kart was good everywhere & just needed more rear grip through the corner then adding or re-positioning seat stays would be beneficial. However, your symptoms seem to indicate that you are…"
I left a note on my friend invite for you but ran out of space. I speak of you often and highly over here in the West. There just aren't enough gentlemen like you who were prepared to mentor others, even competitors on the fineries of karting.