Maintenance & Technical > KX500 Original
'98 KX500 - Won't Start - Kicks back when kicked over
tecate3:
Balls dude, the flywheel weight probably didnt help. Anyway, 89-04 crank is what ya need.
manco:
--- Quote from: Foxx4Beaver on July 31, 2015, 09:11:44 AM ---...that's one of the worst one's I've seen...
--- End quote ---
That pic is about 25% of the damage. The whole crank is damaged all the way around in a similar fashion as shown in the pic. Its really messed up.
Its definetely time for a complete rebuild to get at that crank.
Foxx4Beaver:
just a suggestion....but it's worth every penny to have your new crank balanced....another task Pinnsonault or Crank Works can do for you.
manco:
Does balancing the crank matter all that much if the bike is ridden primarily at low rpms? I planing an on trailing this bike primarily at low rpms. I looked into crank balancing some. I read up on balancing & weight addition. It seems like balance is to add RPMs to the top and adding weight helps low end torque. One thing I am wondering is how balancing effects reliability of the crank. Does the machining of balancing a crank weaken it structurally so as to be less durable?
If I rebuild I am thinking maybe a compression release would be nice to add. I read somewhere that someone does the mod.
Foxx4Beaver:
balancing makes it sooo much smoother....it'll also help your crank bearings last longer, and the whole bottom end, since it won't vibrate anywhere near as much.
I had mine done, and it was one of the best things I've ever done...I generally trail ride now a days, with the occasional rip around some tracks, so I do a lot of 2nd and 3rd gear riding.
I know there's several others on here that've gone that route also, and swear by it.
Send Larry a PM...he was doing the compression releases...but I think he said his son is doing them now...
http://www.kxriders.com/forums/index.php?action=profile;u=2245
I think RoostiusMaximus said he was doing compression releases also.
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