Has anyone converted to a cable choke? I think I'm going to attempt it. any experiences may be helpful.
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http://www.jackssmallengines.com/jac...z6dhoc5hfw_wcb You get the idea $6 at agri supply http://www.oregonpartsdirect.com/images/60-039.jpg |
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ILL post a thread about this too but I need an answer. I've got mine torn apart right now (you can read my hawk thread for the reason and all of that) and I need the little gasket that sits inside the centrifugal oil filter cap. I can't find any in eBay, RPS hasn't gotten back to me, and the local dealer that said they HD it, gave me one that was the right shape but was way too big for the cap.so there's two sizes apparently. Is there another engine (one with readily available pars) that would use the same gaskets? Same centrifugal oil filter different engines, etc... Please help, I'm ready to get this thing back on the trails.
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Jmcg..spoken like a true Chinese engineer:hehe:
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ignition
So, I have been thinking about cdi controlled ignition timing. The only information I have found on the Hawk's cdi says that it has retarded ignition until about 1200 rpm. Then it jumps to maximum advance. I cannot find any information on whether the ignition fires every time the piston reaches the TDC area, or every other time. If it fires on every stroke, that presents a problem. Why? Because if it is, it is firing the mixture that rushed in to the engine when the exhaust pulse created a momentary depression in the cylinder during the valve opening overlap period. And, if it is firing at that time, there will be a pressure wave going not just out the exhaust pipe, but the intake as well. This will disturb cylinder filling, obviously. If we find that it is not firing at tdc of every revolution of the engine, then we only have to concern ourselves with the spark advance. Does anyone out there know the answers to these two questions?
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It fires every revolution. What was the other question?
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If the pick up is on the flywheel it fires every time the piston is at TDC
if the pick up is on the cam it fires every second time... most bikes infact just about all these days fire a spark every stroke there is no issue at all with it... both my Yamaha's & the Honda run a waist spark system... 4 cyclider motors only have 2 coils with 2 leads of each coil.. one coil to 1 & 4 cyclinders.. the other to 2 & 3 cyclinders so one plug is fireing on the exhaust stroke.. never been a issue in the 50 odd years or more they have been doing it.. . |
On most of these CG clone engines the spark advance at idle is 15 degrees and tops out at 35 degrees at 3500 RPM.
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