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SOHC,s Norton


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Got this motor today, it’s an industrial motor but has the mag out the back witch makes things way more easy, it was from a rotory hoe that had a stuffed gearbox and other problems so I didn’t feel so bad.

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Took the gearbox apart and as allways 2nd gear has gone through the cace hardening, on the lookout for a clutch, I need the clutch for when I make the engine plates  

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  • 2 weeks later...

Took both motors apart to find the one I want to use has some moisture damage to the shaft, (rollers run directly on the shaft) big end feels really good play wise but probably has the same problem.

other motor looks as if it never had an oil change 

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  • 2 weeks later...

Split the crank on one of the motors and rod and crank pin are in good condition, but this crank has a different main shaft, it’s looking like I need to get a new mainshaft made, bathcolector sent me a better one I will see if it cleans up with a grind and O/S rollers, cam pinon gear is pretty bad to. 

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The timing side bearing on thees JAP engines is a crowded needle roller witch runs directly on the main shaft, they are a real heart breaker. 

I need to find a way to get the inner bearing shell out of the crank cace 

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  • 4 weeks later...

Laced up the front rim but haven’t tightened the nippels, I got a cople extra spokes and because they are aliexpress shit I did some testing on them to see how strong they are and they seem tougher than the old spokes, sparks fly off them when I hit them with an axe.

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