Maintenance & Technical > KX500 Original
Taming The Beast!
AFASTboy:
My 5 has a thirteen tooth sprocket on the front and it is still a beast but it makes it awsome for short straits and tight sections.You can just leave it in a couple gears high and chugg it around and when you need the speed just twist it open and hold on.
Ramski:
I love my flywheel weight. I'm always amazed how low the stall speed can get on that thing before it finally dies. It does make bump starting a little tough though.
In AZ on the tight trails, I liked my 13/47 combo. Lots of people don't like the pull with that low gearing. I only hated it when the washes opened up. Ran out of gears really quick. I imagine the top speed on it with that gearing was maybe 60mph.
AFASTboy:
13/47 gotta be around 75 or 80 top speed feels alot faster than my old craptor and it would do 73 from the factory
kawrider:
:)
Thanks for the response, guys, & the support! I have already begun experimenting with different sprockets, and that has made a huge difference. As an side note, I noticed lots of comments about top speed & sprocket ratios. You may be interested in my calulations. With stock 14T/47T sprockets, the beast should be capable of slightly over 100mph (at 10,000 rpm engine speed).
I am currently experimenting with 13T/52T! That's lower than anyone recommended, but puts the bike very near the same overall gearing as the KX250. Of course it pulls like a tractor, but that's OK. If I keep it geared this way, I will definitly try some flywheel weight, as every ding, ding, ding of the engine is transmitted as a umph, umph, umph to the bike, when going slow!
Slowing the bike down will be easy enough. But making it happy is my challenge now. I have raised the needle clip one notch (to position 2) and dropped down one size on the pilot jet. Still running stock #8 plug. Bike is smoky and sputtery until it get's hot & then it clears up. I'm still running 32:1 mix. Thinking about trying 40:1. Any thoughts?
Paul:
40:1 and a BR7ES will make it very happy ;) I run the Maxima Super M which is a very low ash formula with little smoke AND a powervalve cleaner additive. My powervalves, cylinder and piston rings have always been carbon free and I don't get that "spooge" running this stuff and my silencer packing lasts longer also.
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