Phantom 85

Well the inner diameter was perfect. But the outer diameter of the needle bearing was about .1 mm too large to fit into the connecting rod.☹. I have a RDM bushing on it's way and should be here today. I sure had my heart set on a needle bearing for this engine. Attached is a photo of this needle bearing along side the graphene bushing.
So basically for that bearing to work, you need to open small end of connecting rod .0015" then that bearing should work, if my measuring & mind are working correctly.
 
Well the inner diameter was perfect. But the outer diameter of the needle bearing was about .1 mm too large to fit into the connecting rod.☹. I have a RDM bushing on it's way and should be here today. I sure had my heart set on a needle bearing for this engine. Attached is a photo of this needle bearing along side the graphene bushing.
A brake cylinder hone and your bearing is good... .1mm
I wouldn't give up on the bearing just yet...
45/64 is going to slip fit the bearings without reducing the shaft...
 

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A brake cylinder hone and your bearing is good... .1mm
I wouldn't give up on the bearing just yet...
45/64 is going to slip fit the bearings without reducing the shaft...
I wasnt giving up Mossy on that bearing. I was just trying to find a drop-in needle bearing for these guys that have phantom 85 engines. That way it was plug-n-play for them. I got lots of tooling to correct that problem, that I'm sure alot of these guys dont have.
 
I wasnt giving up Mossy on that bearing. I was just trying to find a drop-in needle bearing for these guys that have phantom 85 engines. That way it was plug-n-play for them. I got lots of tooling to correct that problem, that I'm sure alot of these guys dont have.
I know you wasn't... Plug and play 🤣 those guys 🤣...
 
.1mm turned it into a trash a Pinky and some 320 paper brought it back
 
Just received the new Phantom 85, the cage bearing won't fit the 1st gen. It's about 15mm dia.
 

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I used the search feature on this thread and didn't see anything about gear ratio

Do these engines have the same drive ratio? (I am making these numbers up for ease of calculation). So if I were going 40 and my engine was @ 10,000 RPM on my little normal CG engine... would I also be @10,000 RPM going 40 on an identical bike with a Phantom 85? I guess I could look it up, but you guys are more fun!
 
You guys are just going to make me buy a phantom 85. My fix/way gets rid of the bushings totally. Then you put together like a normal CG engine with a needle bearing & a 12mm pin. No bushings at all then to fail.
How has that bearing you found been working out I haven't got around to mine
 
I used the search feature on this thread and didn't see anything about gear ratio

Do these engines have the same drive ratio? (I am making these numbers up for ease of calculation). So if I were going 40 and my engine was @ 10,000 RPM on my little normal CG engine... would I also be @10,000 RPM going 40 on an identical bike with a Phantom 85? I guess I could look it up, but you guys are more fun!
Yes the ratio is the same, it's 4.1:1 then the reduction between engine and the rear wheel, so to fit the numbers used on a 26" wheel with a 48 tooth gear would be 40 mph at 10k rpm.
 
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