Heavy Duty Replacement Clutch

boneswood

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May 27, 2015
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Anyone know of where to find a heavy duty replacement clutch for a 49cc Huasheng with 4GT transmission? The one it comes with broke right away, and they sent a replacement, but you can tell it is just as cheap. Would appreciate any input!
 


The_Aleman

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May 2, 2007
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785
Which kind of Huasheng is it, the one with a long keyed shaft (clutch comes with 4G) or the one with the short shaft (clutch comes with engine)?
 

The_Aleman

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May 2, 2007
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785
The 5/8" shaft engine has a keyway and does not come with a clutch. The clutch comes with the 4G, in that case, a Honda-style 4G or new 7G.

The short shaft engine (aka "tapered shaft") has the integral clutch. This engine does not have a keyway on the PTO shaft.

There's not much to upgrade in either case; the clutches are generic. Staton-Inc carries nice versions of both clutches, but their site is down atm.
 

boneswood

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May 27, 2015
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Nuts. I thought that may be the case after searching and searching and coming up with nothing. Thought I'd found a good replacement at bicycle-engines.com, but the sent me a clutch that does not even fit the engine they sell. Grrr... Has anyone else had clutch problems?
 

The_Aleman

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May 2, 2007
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785
Yeah, B-E used to only sell kits with 5/8" keyed shaft engines, but they have obviously changed that in the last year.

Their current 4G kit states "Tapered 1/2" drive shaft with factory OEM centrifugal clutch"
which means that the replacement clutch they sell in their parts section won't fit. That clutch is for 5/8" shaft engines.

There isn't a whole lot you can do with the type of clutch you have besides change springs to modify engagement speed.
 

boneswood

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May 27, 2015
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We thought of switching the springs too. One forum we read suggested 1/4'' #35 springs. Any clue on where we can find those? Been to the small motor places in our town and no luck. Thanks for all your help by the way.
 

The_Aleman

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May 2, 2007
Messages
785

The_Aleman

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Joined
May 2, 2007
Messages
785
Seems like a $314+shipping Q-matic gearbox is kind of steep when OP is just looking for a good clutch for his 4G.

Granted, few clutches are better than the MaxTorque in the Q-Matic, but a 4G with proper clutch with always out-accelerate a Q-Matic.
 
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