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About yellow_cad

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  • Bike
    72 OSSA MAR

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  • Location
    Folsom, California

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  1. Does anyone have a source for 12mm x 1.5 mm male thread fuel tank petcock? I need one for my OSSA MAR. Thanks, Jim
  2. Thanks, I do use ATF, and sufficient free play, but not sure what you are referring to regarding level. So, you're saying to pop it in 3rd or 4th after it is running with the clutch lever disengaged and leave the clutch lever disengaged or not?
  3. I have a 1974 Ossa MAR. If it sits for any period then the kick start lever will not kick freely to clear the clutch. I let it sit for days with the clutch lever clamped to disengage the clamp. It still doesn't kick free so I read on this board some time back that one way of dealing with this problem is to put the front wheel up against the wall and then start the bike. I did this and even though the clutch was not free, when I started the bike it ran as if the clutch was disengaged. What am I missing here? I need to take it somewhere to ride it and do any shifting so I haven't (I'm 73 yrs old so lots of trial and error is hard work). With it up against the wall with it running should I then try to put it in gear and if so, what gear should I try first? Thanks for any help on this. Jim
  4. I use F type atf in the gear box, but every year my clutch gets very stuck. Any ideas for getting it unstuck right now and keeping it from sticking each winter would be greatly appreciated. Thanks
  5. My question is about the drive chain tensioner that pushes up on the chain and provides a tight wrap of the chain on the rear sprocket. The rubber pad that contacts the chain is attached to a steel lever that is somewhat spring loaded. There is an additional spring that attaches to the frame and goes down to the tensioner lever. This second spring was disconnected when I got this bike and the rubber has hardly any use at all. Should this second spring be connected by hooking to the bottom of the steel tensioner lever? If it should be attached, should I lube the rubber with, say, silicone spray? Thanks for any help on this. Jim
  6. Potassium is great for normal blood pressure and is great in the diet but calcium and magnesium are the elements needed by the muscles and magnesium is usually the one missing.
  7. Asprin kills all of your vitamin C. Better yet, take 1/8 of a teaspoon of Epsom Salt in just enough water to dissolve it. It magnesium sufate and provides muscles with their needed magnesium so they don't cramp. Take before trialing and there should be no cramps. If you still cramp then you are sadly lacking in magnesium and can build it up over time. Shell fish and green leafy vegetables are food sources of magnesium.
  8. At what stage in your process do you actually bend the aluminum?
  9. I have a 72 OSSA MAR. Do I want it in first gear to try the short controlled wheelie to get up on an object?
  10. How about a uni-cycle. I picked up a used on for $100 and I am trying to work it into my schedule.
  11. Is there any place in the Western US where vintage trials are laid out as they were 40 years ago so the motorcycle is moving pretty much all of the time? More a momentum thing than a point and shoot type exercise. Out of more general interest, are trials done that way anywhere in the world today?
  12. yellow_cad

    Ossa Manual

    Amazon books online in the USA has it for used for $9 plus shipping. You should check and see if they will ship to you. Jim
  13. I have a 72 OSSA MAR. When I look in the literature I have for 72 OSSAs (hard and electronic), they don't list the MAR. Which model is the closest to the MAR: Pioneer Plonker/Explorer Super Pioneer/Phantom Thanks, Jim
  14. My clutch sticks when not running and can usually be broken free but once in a while it is pretty stuborn. Would there be anything wrong with elastic or something to keep the clutch lever pulled while the bike sits so the clutch doesn't have the opportunity to stick. I saw that suggested for cars and wondered if it would be OK with the clutch springs on the OSSA. Thanks for any thought on this. Jim
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