Maintenance & Technical > KX500 Original
the 250/500 project
supermotokx:
Yep
Not all good... :oops:
I went testing on a gokart track (ultimate fun on a supermoto) and I found out that my tank was leaking :cry: . I suppose the chemical metal and epoxy didn't cope well with the plastic tank and the heat from the engine. So I'm building a new tank in alu. Pics will be posted next week. The bike handles very different from the kx500. The chassis is more stiff and the bike steers very fast compared to the big bike. The suspension is just way better.
The engine still performs very well, I've been fiddling with the jetting and now there's allmost no difference in performance from before I cut and turned the pipe. The kick backs persist and I'll have to wait until winther to get that fixed.
New springs are on the way, cos the old are too soft.
demographic:
--- Quote from: supermotokx ---Yep
Not all good... :oops:
I went testing on a gokart track (ultimate fun on a supermoto) and I found out that my tank was leaking :cry: . I suppose the chemical metal and epoxy didn't cope well with the plastic tank and the heat from the engine. So I'm building a new tank in alu. Pics will be posted next week.
--- End quote ---
I have heard that you can change the shape of plastic MX tanks by heating the bit you want to move with an electric decorators heat gun but heat it up slowly cos they can melt if you go nuts :shock:
Might be worth practicing on your knackered tank before having a go on a fresh tank
mikesmith:
I had a friend that had a new KX250 and a friend of his sold him a new FMF pipe,well the pipe was so close to the tank it melted a hole in it (turns out we were at Washougal national MX race so FMF looked at it, told us the pipe had the mounts welded in a jig that was out of alighnment and gave him a new pipe but wouldnt fix the tank.Turned out his "friend" sold the pipe because it had melted a hole in his tank but didnt mention it untill after the fact,nice!)My father inlaw owned a body shop and gave me some epoxy(dont know the name of it,was back in'95)after my buddy had tried every thing to fix that hole,well the epoxy I got held for years untill he sold the bike and still is as far as I know.So you may want to try a body shop or look for some epoxy that works because some where out there there's some that works.Ty-Davis had a custom aluminum tank on his KX250 years ago,but I hear youll always have leaks popping up no matter how good the welds are,let us know how it goes and sorry I couldnt give a brand name for the epoxy.
John:
Hmm,
I know you are not allowed to race with a metallic fuel tank in Sweden. I assume the same applies in other countries?
/Sir John
supermotokx:
Well it might not be allowed in motocross but in roadracing and supermoto it's another matter (I just checked the regulations).
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