From perfect little get around motor to dog in one gasket replacement?!? (FIXED IT!!!)

Sloppyslopster said:
Glad to see you're back up and running again. If you're having carb trouble and the thing is just crap I would just get a better quality one. Not sure who sells good stock replacements. But hey I always suggest getting a windowed piston, g2 reed, 21 pwk, and a good pipe like an mz65. Safe easy upgrade are just a pipe and a high comp head. But that's something for a later date for you.

Last suggestion I would make to you would be to still play with the clip a bit, maybe move it rich one notch and see how it runs. Don't want to run the engine too lean or it will become a mess of metal chunks and could send you to the hospital if not careful enough.

Again happy to see its working again, safe riding!
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I'm pretty happy with it, but I'd like even more hill pulling power TBH. I have the 41 tooth sprocket that came with my engine from CMB. I'm getting a 44 tooth sent courtesy of cloakedvillian, and I wonder would that give me noticeable torque on hills? As it is, there are some I end up needing pedal assist on, and I wonder if three teeth would be the difference?

I need a degree wheel and a Dremel now, Mwahahahahahaha!
 
going to 44 from 41 will give you more torque and less top speed. Very minor change but it will climb better. Not sure if it would be noticed because its only 6.8 percent increase in torque.

As far as I know the sprockets can be found in these sizes: 28, 32, 36, 38, 40, 41, 44, 48, 56, and 60.

A 48 tooth may make the difference be a 56 definitely will.

You do get a noticable boost in torque after break-in. That and really dialing in the jetting will make an appreciable difference.
 
markjs said:
I'm pretty happy with it, but I'd like even more hill pulling power TBH. I have the 41 tooth sprocket that came with my engine from CMB. I'm getting a 44 tooth sent courtesy of cloakedvillian, and I wonder would that give me noticeable torque on hills? As it is, there are some I end up needing pedal assist on, and I wonder if three teeth would be the difference?

I need a degree wheel and a Dremel now, Mwahahahahahaha!
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If you REALLY want good torque for going up hill and a solid top speed ms460 the way to go just saying haha. Had a 52mm one paired with I believe a 36t sprocket and it pulled me up a hill no problem. Albeit I’m only 155 pounds but hey it was carrying near top speed going up hills. And I was able to hit 40mph untuned, unbalanced crank, and possibly having an air leak.
 
Sloppyslopster said:
Albeit I’m only 155 pounds but hey it was carrying near top speed going up hills.
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My Phantom 85, which is an MS-460 clone cylinder with 52mm windowed piston with reed valve, with bike weighing 80 to 90 pounds and me being around 220 pounds can climb mountain foot hills no problem where I live and needs no pedal assist, plenty of torque with 36 tooth sprocket and doing this at a 4500 ft altitude...lol.
 
Sloppyslopster said:
If you REALLY want good torque for going up hill and a solid top speed ms460 the way to go just saying haha. Had a 52mm one paired with I believe a 36t sprocket and it pulled me up a hill no problem. Albeit I’m only 155 pounds but hey it was carrying near top speed going up hills. And I was able to hit 40mph untuned, unbalanced crank, and possibly having an air leak.
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Port Townsend is kinda hilly, this is typical of most of the PacNorWet coastal areas, I don't care what type of engine you've converted to, with proper lower (higher numerically ratioed...) gearing even a little, stock 48 cc will pull 5% or 7% grade hills. Mine does towing a trailer with 30# cargo and it's the cheapest engine Amazon sells. Sounds like this is just a basic transportation bike. I've even gone to a smaller venturi Yamaha PW50 carburetor because it's more reliable, starts easier, more precise in mixture, has a enrichment circuit and an idle mixture circuit with a screw adjustment.
 
markjs said:
I'm pretty happy with it, but I'd like even more hill pulling power TBH. I have the 41 tooth sprocket that came with my engine from CMB. I'm getting a 44 tooth sent courtesy of cloakedvillian, and I wonder would that give me noticeable torque on hills? As it is, there are some I end up needing pedal assist on, and I wonder if three teeth would be the difference?

I need a degree wheel and a Dremel now, Mwahahahahahaha!
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Learn to keep your engine going reliably *as it is*. If you're having trouble with the general assembly and tuning of a stock engine...:unsure:

Just don't get sucked into the black hole, money pit of throwing good money at bad tuning and repairs. You don't have the experience or the tuning chops yet to be doing this. You think this previous problem with your engine was bad? You don't have to go so very far into doing a poorly done porting and compression ratio tuning to have the engine go over the edge of being un-repairable. This forum is filled with people new to motorized bikes who bodged a tuning and had it break the bank. The metallurgy and reliability of these engines are already cheezy enough as sold.
 
LewieBike said:
Port Townsend is kinda hilly, this is typical of most of the PacNorWet coastal areas, I don't care what type of engine you've converted to, with proper lower (higher numerically ratioed...) gearing even a little, stock 48 cc will pull 5% or 7% grade hills. Mine does towing a trailer with 30# cargo and it's the cheapest engine Amazon sells. Sounds like this is just a basic transportation bike. I've even gone to a smaller venturi Yamaha PW50 carburetor because it's more reliable, starts easier, more precise in mixture, has a enrichment circuit and an idle mixture circuit with a screw adjustment.
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That's what I have been telling everybody, but they all think bigger is better.

BTW, where have you been, someone need advise on bike mechanics. I didn't know how to address the issue.
 
Chainlube said:
That's what I have been telling everybody, but they all think bigger is better.

BTW, where have you been, someone need advise on bike mechanics. I didn't know how to address the issue.
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Do you have the thread(s) link? I also have other interests, and my PC has been up and down so getting online hasn't been all that reliable.
 
Sloppyslopster said:
Glad to see you're back up and running again. If you're having carb trouble and the thing is just crap I would just get a better quality one. Not sure who sells good stock replacements. But hey I always suggest getting a windowed piston, g2 reed, 21 pwk, and a good pipe like an mz65. Safe easy upgrade are just a pipe and a high comp head. But that's something for a later date for you.

Last suggestion I would make to you would be to still play with the clip a bit, maybe move it rich one notch and see how it runs. Don't want to run the engine too lean or it will become a mess of metal chunks and could send you to the hospital if not careful enough.

Again happy to see its working again, safe riding!
Click to expand...
I actually did play with the setting a bunch. Just seems to run best at the leanest position now. 4 strokes just a tiny bit as revs are building from mid range to high revs. It seems to be happy there.
 
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