What size centrifugal clutch do I need? Manco 485-25

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Venomous

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I am pretty sure that is the correct model number, the sticker is hard to read. It has a 5hp B/S engine. I got the kart for 80 bucks, the engine runs, it is missing the brake caliper and needs a few other odds and ends. Also need to know what chain/type. Any help would be appreciated.
 

crazykart

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As always I would suggest a 30 series torque converter, but if you don't have the money a clutch should work fine...depending on your rear tire size, and axle sprocket size.

Let us know the rear tire size, and the tooth count for the rear axle sprocket and we'll give you a hand. Without that info all we can say is you'll need a clutch with a 3/4" bore, and just that doesn't help much lol.
 

Venomous

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The tires are 16 inch, and looks like a 60 tooth sprocket if I counted right. It is gonna be driven in hilly pasture fields mostly, so it will need enough torque to climb small hills and push through tall grass with about 125lbs of driver.

About the torque converters. What are the benefits? Do they justify the price?
 

crazykart

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IF you go with a cent clutch I would suggest an 8 tooth clutch to give you a better gear ratio for those hills, BUT a tc would do so ooooooooooooo much better.

Usually though we would suggest a 10 tooth cent clutch to give you a 6:1 ratio, but for low torque applications like grassy hilly areas I would think a 7.5:1 would be better.

A tc allows for better torque when going offroad, and better gear ratios. Instead of having a fixed gear ratio (8 tooth clutch 60 tooth sprocket for a gear ratio of 7.5:1) the torque converter gives you a broad range of gear ratios in real time while driving. The driver and driven of the tc changes in ratios in real time while driving, giving you both good low end torque and good top end speed.

I hope I explained that relatively clearly for you.

Basically though YES it is completely worth the $100+- and then some, especially for off road conditions.

Search ebay for 30 series torque converter, but you'll need to know the axle sprocket pitch (I believe it's pitch), same as with a cent clutch.

Also, please instead of posting twice within minutes of each other please just click the edit button to add more info to the post. It just makes things easier on us all.
 
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