5hp 1 inch crank

[Fisher1983]

I scored a free 1991 5hp model 130212 off a chipper today. The question is, are clutches available for the 1 inch cranks? Do they need a spacer up against the block since the crank is 1 inch all the way thru? Theres no tapered area for the clutch to stop. Finally, will a 3/4 crank drop in? This is a plain bearing engine so if memory serves a standard 130202 crank should fit with the stock side cover, yes? Thanks for any help....unable to find answers with search.

 

[neo71665]

https://www.OldMiniBikes.com/Mini-Bike-Go-Kart-Parts/Mini-Bike-Clutches/1-Clutches

 

[125ccCrazy]

a standard 3/4 crank will swap in.

 

[Fisher1983]

Thanks, guys. Id feel better about using a nice 3/4 inch crank and standard clutches. Too bad the crank isnt available new anymore.

 

[Sixpac440]

Thanks, guys. Id feel better about using a nice 3/4 inch crank and standard clutches. Too bad the crank isnt available new anymore.

Pull the crank, spin it down on a lathe, cut a new keyway and your off to the races!

 

[Fisher1983]

Dont want to machine anything. My machinist needs drawings to reference. I posted under Wanted for a standard crank. Tried to PM The Restore Kid but it looks like he doesnt accept PMs?

 

[JKautoFab]

dont bother with all that extra work. you can get a 1 inch clutch for reasonable price

Go Kart Mini Bike Heavy Duty Centrifugal Clutch 10T 1" Bore KD1B1041SHD USA E1 | eBay

yes, the teeth have to be out at the end of the crank. if it sticks the clutch out too far, lop off the end of the crank and drill and tap threads. much simpler than changing out cranks

 

[RegalX]

I just did this swap, bought a gasket set for $30. Took a Scotch Brite to the cylinder and lapped the valves while I was at it.

 

[creia]

dont bother with all that extra work. you can get a 1 inch clutch for reasonable price

Go Kart Mini Bike Heavy Duty Centrifugal Clutch 10T 1" Bore KD1B1041SHD USA E1 | eBay

yes, the teeth have to be out at the end of the crank. if it sticks the clutch out too far, lop off the end of the crank and drill and tap threads. much simpler than changing out cranks

As per ad, "Not available for # 35 chain."
Michael

 

[Fisher1983]

Yep. Already looked at a bunch of clutches. If they werent expensive, they didnt meet my needs. And if they semi-met my needs, they were expensive. I did find a crank on Fleabay that will work but I'
m hesitant to pull the trigger at $50 bucks. I posted in the Wanted section hoping a fellow member would have a good used one at a decent price (that's already drilled and tapped on the end unlike the eBay part.) This engine has a burnt valve so it
ll be apart for a bit anyway....I want to make this one very nice for my Bug

 

[JKautoFab]

there are 35 1 inch clutches too. i have one. the extra money on a clutch isnt bad and costs less overall unless you just kill clutches all the time.

 

[creia]

there are 35 1 inch clutches too. i have one. the extra money on a clutch isnt bad and costs less overall unless you just kill clutches all the time.

Agreed. Just letting the OP know that the particular one you posted the link to will not work for # 35 chain which is most likely what he has.
Michael

 

[Fisher1983]

35 chain, yes. A fello OldMiniBikes member replied to my wanted post with the correct crank. I look forward to receiving it. You guys here never cease to amaze me with your awesomeness!