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kevin j

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Everything posted by kevin j

  1. I have added grease fittings to steering head bearings, and brake pivot points also. Running of out lube is only part of the issue. The biggest plus I see is that by frequent greasing, the water and dirt get purged out and keep the bearings clean. The old TY linkages last for years. I am very careful to clean the fitting first, and to leave a glop of grease on it when done. I don't want to push dirt in via the greasing procedure. k
  2. like charlie I play with the choke. then try the fuel tap shutoff and see how it changes as the bowl runs lower on fuel.
  3. A year or so ago, list $US150+. Buying through a wholesaler, piston, rings, small end bearing, and gaskets were total over $200.
  4. also check out a kayaking, canoeing or rock climbing store. The neoprene paddling gloves are made of closed cell like wet suit material. work great, and decent priced. kcj
  5. kevin j replied to terry's topic in Yamaha
    I had a yellow 250. I think the stock gearing was 15t front, seemed ridiculous. The back, being dished, was about unobtainable. (I think bob ginder had a kit with spacer to convert to flat rear sprockets.) anyway I ended up with 11 or 12 front I think. I bought a 10T but remember that it was too small for the chain to clear the transm shaft or swing arm or something. I digress, here's why I wrote: Get the transmission ratios from the manual, then divide the two ratio numbers of two gears, say first and second. That gives you the % spread between those gears. I am picking numbers to use in this example (have no idea), say 15.00:1 in one gear, and 12.50:1 reduction in the next gear. Dividing these two is 15.00/12.50 = 1.20. This means they are 20% apart from each other. Now, decide which gear you like. First is way too low, second is too fast, but I think second is closer to what I want. Therefore I want about 15% faster than low gear. Now you have some idea of the goal. Just do the math from there. If the original is 11/53, that is 4.818 reduction 12/53 would be 4.417 reduction, slightly faster. Comparing the two is 4.817/4.417 = 1.09 or 9% increase in speed. 13/53 would be 4.078 reduction. 4.818/4.078 = 18% increase. For decreasing speed, the math works the same. You are just looking at how much does it change compared to what I have now. Maybe thats close enough. I would buy a couple front sprockets and try them. After that, if you want to change back ones you will likely only have to buy one, and it should be close. k .
  6. kevin j replied to eiger's topic in Yamaha
    there was a majesty or majesty clone on ebay, at least as of yesterday. k

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