The next generation....
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Never took to the upside down design.
What would be more interesting is the tandem twin inclined with the gearbox underneath.
That would lead to a very compact package suitable for a motor bike. The original design as used in Karts is too long for a bike.
What would be more interesting is the tandem twin inclined with the gearbox underneath.
That would lead to a very compact package suitable for a motor bike. The original design as used in Karts is too long for a bike.
Last edited by mj43 on Fri Feb 08, 2013 6:08 pm, edited 1 time in total.
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A while ago at Cadwell was chatting to a chap from France (don't remember his name) who builds very quick international super Karts and after looking at my Kr's he showed me his 250cc motors he builds for the Karts, quite impressive and all manufactured in house, said he has a tuned road Kr1 and he based his Kart motors on the Kr motor as they are so good, he was pleasd to see a Kr going round Cadwell.
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Not sure of any in-line two stroke kart engines. Plenty of tandem
Mark it wasn't FPE was it? http://www.pit-lane.biz/t875-technique-fpe-superkart though there engine is Rotax/Aprilia based....
Mark it wasn't FPE was it? http://www.pit-lane.biz/t875-technique-fpe-superkart though there engine is Rotax/Aprilia based....
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Bob Martin would have loved to know that a 256 was to long for a bike when he managed to make this with same geometry of a RS250 NF5mj43 wrote:Never took to the upside down design.
What would be more interesting is the tandem twin inclined with the gearbox underneath.
That would lead to a very compact package suitable for a motor bike. The original design as used in Karts is too long for a bike.
Had a A Grader guest riding it after riding TZ250's and modern 600's couldn't believe a 6000 rpm wide power band.
FPE is based on a Rotax 256 the 256 could well have been copied from the KR 250/350 as that began in 75 Rotax was 78/79. Pneumatic valves have tiny ports in the exhaust duct that push the bellows up when the pressure rises a very old Rotax idea still used on the MAX kart engine/snowmobiles today
crochet & croquet
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Now that is a thing of beauty, that is what I had in mind. I mentioned stacked inclined tandem as it is more compact and on a bike gives better weight distribution/geometry than the standard tandem layout.TwoStroke Institute wrote:A home made Italian twin, would love if he made a run of them
Given the absence of a power valve I assume that engine was destined for a Kart?
Last edited by mj43 on Sat Feb 09, 2013 2:14 pm, edited 1 time in total.
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A rather odd kart the concept might catch on thoughmj43 wrote:
Now that is a thing of beauty, that is what I had in mind. I mentioned stacked inclined tandem as it is more compact and on a bike gives better weight distribution/geometry than the standard tandem layout.
Given the absence of a power valve I assume that engine was destined for a Kart?
I didn't do the pipes Dave just the engine(pipes were from a kart cut n shut to fit). Yes Scott was built by the late Bob Martin back in the early 80's (82 IIRC)
crochet & croquet