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Jun 16, 2011 20:37:16 GMT |
I'm liking this thread. I used to race 125cc ICC gearbox karts, mostly at Forest Edge, Shennington and the Super 4 national championship. I stopped racing probably 5 years ago but my kart is still in my shed in peices. The last time it raced it had a pretty nasty end so its got a dead bottom end bearing, snapped and bent chassis and super cracked exhaust. I'd love to get it up and running again for a bit of light hearted playing like yourself! This thread has tempted me to go dig it back out of the shed and see what I can do with it!
You look like you've adapted engine to the kart really well. Getting 2 stokes jetted is a work of art that we could never get quite right. Generally if we were doing 6 sessions in a day we'd be doing 6 jet changes as the air density changes. Remember its always best to err on the side of caution and run rich so it doesn't seize too much. I remember you could get them to sing beautifully if you got it right but as soon as it went too well you knew it was about to seize.
Also, your chassis looks exceptionally similar to the 'Mike' chassis that I have in my shed. What make is it?
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Jun 18, 2011 23:25:54 GMT |
Awesome!
I used to run a 100 B kart and after a days testing would be fit to drop!
I really fancy a 250 national kart now :-)
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Koos
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Nice to see you back in action with something quick and petrol-powered. Really strong look in the suit, too  Matt
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"Mechanical Power Subduing Animal Speed" (Robert Trevithick, 1808)
'72 BMW 2000 Touring '99 TT 180 (mrs) '72 BMW 2500
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Jul 14, 2011 19:33:06 GMT |
Didn't realise you had the thread on here fella, just read it all (even though Id seen the start) and caught up with everything! Nice one, glad to see the photo's to go with the stories you've told. Oh, and Tash just looked over my shoulder and shouted "NICE SUIT!" lol 
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bstardchild
Club Retro Rides Member
Posts: 14,810
Club RR Member Number: 71
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Apr 27, 2012 17:50:28 GMT |
Firstly very late to the party but you linked to the thread in another thread so I found it Carbon reeds were fitted to the reed block, these were with the barrel kit, so I’m guessing well matched too –  Have you got a picture of the reed block without reeds and stops fitted? Std reed blocks can be quite restrictive and you can gain a bit by porting the reed block (as you would a inlet with thought to airflow and restrictions) They are normally rubber coated so you have to go slow and steady and not get the ally too hot that the rubber peels off. I'm struggling to remember what the limit for the stop was on carbon reeds but in the past I've opened out the inlet port to allow an increase in stop height - have a search for reed stop settings for an engine like a 350 YPVS as that's pretty much had every tuning option explored over the years. I used to have a Kawasaki AR80 - fitted with a KX80 motorcross piston barrel and head along with a 32mm flat slide carb - std bhp was 10 for the AR80 and 21 for the KX80 - made the thing lots of fun What was the squish dimension clearance between piston and head at the edge of the barrel (plumbers solder is great for that)
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Hi Ian, Yes, I did miss this one  I will have a go at the reed block, some WD40 / hard soap and my carbide tulip bit should make light work with very little heat build up. As for stop heights, I am a little worried about getting flutter / bounce at high RPM need to do some very careful investigation before I attack that one. And I have been joll lazy and not measured the squish, I was just a little bit excited about getting it out on track  got some time so I will have a look at this soon and post up the results. Hope you are well, J
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