Recent content by SomeGuy

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    (Slow?) Top Speed around 26-30 mph 80cc SBP Shift Kit

    Hey guys! Just thought I'd give you an update. So I had gotten the new engine installed after making sure it was put together properly (greased it, faced piston correct way, tested ring gap, replaced several and tightened engine bolts, torqued engine head to about 130 lbs each nut.) And from...
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    (Slow?) Top Speed around 26-30 mph 80cc SBP Shift Kit

    Well my new engine and the expansion chamber have arrived. I'll keep your tips in mind as I rebuild my bike and let you know how it goes ;) SomeGuy
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    (Slow?) Top Speed around 26-30 mph 80cc SBP Shift Kit

    Thanks for the tips guys! I have done over 100 miles since my last reply, with similar performance until yesterday. Unfortunately my motor locked up. Apparently some junk got in and the jug chrome plating chipped away a lot, and so I pulled the motor. (Lesson learned, get a good air filter...
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    (Slow?) Top Speed around 26-30 mph 80cc SBP Shift Kit

    I know that a jackshaft puts some extra stress on the engine, but that doesn't negate the gearing advantage it receives. The 44 tooth sprocket compared to the high gearing ability of the shift kit is like 4th gear vs 7th. The shift kits can increase top speed because it can return to powerband...
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    (Slow?) Top Speed around 26-30 mph 80cc SBP Shift Kit

    So I have a Schwinn Ranger 26" mountain bike with an 80cc motor and the HD SBP Shift Kit installed. I thought my engine was doing quite well before I had the shift kit - 44 tooth sprocket I was going around 28 MPH top speed. I already had about 200 miles and was definitely way past the break in...
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    Having Trouble Removing Drive Sprocket with 80cc 2 stroke

    You know what, I think I got this. Thanks for the help everyone! SomeGuy
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    Having Trouble Removing Drive Sprocket with 80cc 2 stroke

    To clarify regarding the puller tool please refer to the image I posted above. It has welds all over the threads so that's why I said I don't have a tool LOL Anyways, I got the casing split! Now I just need to find a way to get the crankshaft seals out safely so I can replace them. Any tips...
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    Having Trouble Removing Drive Sprocket with 80cc 2 stroke

    @Crassius Seeing that I don't have any puller to use now, I don't see any way to get the drive sprocket off now. Would hammering the clutch shaft from the clutch side work or destroy things? SomeGuy
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    Having Trouble Removing Drive Sprocket with 80cc 2 stroke

    @mogollonmonster Yes, I should have detailed what I attempted. At first I kept on grinding down the stripped threads on the clutch puller, I had tried hammering throughout. After those attempts, I took it to my bro's and we tried torching it and hammering it and more grinding. After many...
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    Having Trouble Removing Drive Sprocket with 80cc 2 stroke

    Hello All Currently I have been taking apart my 2 stroke 80cc Engine. I got all the nuts and bolts out but I have come down to the Drive Sprocket, which is not allowing me to open the crank casing. I stripped the clutch puller on the drive sprocket many times with multiple methods and it...
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    15 mph top speed with an 80cc engine

    Steve Very helpful! I have ordered both a new muffler and a gasket kit. I'll try everything when I receive them. My engine is simply leaky all over, so I completely agree that I'll need to regasket the thing. The carburetor I'll definitely be checking out as well since it is easy that more junk...
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    15 mph top speed with an 80cc engine

    Alright, so I've been a little busy lately but I've finally been finding some free time. So I got a 32:1 fuel mix, got a speedometer, and I took the end of the muffler off. So I've been riding it a lot lately as I can feel it is going considerably faster. With the end cap off, I am able to reach...
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    15 mph top speed with an 80cc engine

    Oh, you know what, the threads for that kit were not sealing... In the same kit, it had an angle adapter with a tapered rubber end so I just pushed it up against the hole, I held the throttle open, and I kicked the pedal while holding the bike and I was able to get it to about 110 PSI with it...
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    15 mph top speed with an 80cc engine

    Well, since it was most important, I looked into obtaining a compression tester. I used your advice crassius about asking to borrow one at an auto parts store, but they didn't have one to loan unfortunately. Instead, I bought a kit from harbor freight. After some tests, I was shocked. First...
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    15 mph top speed with an 80cc engine

    Sorry for late response, there has been crappy weather around here and I've been busy with school :p First off, my bike is still running the same in that it is no faster than it was when I began. So I did as you said crassius, and the small bevel gear spins extremely straight so that is...