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Hukah

3/4inch shaft

By Hukah, in Engines

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Hukah    17

Hukah
Posted

I need to re-power my 552.
The only thing I can afford is a 3/4 shaft job.
I know I'll have to change pullies, but am I going to run into problems, seeing as the original was a 1 inch shaft?

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slammer302    2,155

slammer302
Posted

You can buy a 3/4 to 1" sleeve with step key off of eBay thats what I did on my 502 

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Hukah    17

Hukah
Posted
42 minutes ago, slammer302 said:

You can buy a 3/4 to 1" sleeve with step key off of eBay thats what I did on my 502 

awesome tip, TYVM.
I am just worried the smaller shaft equals under-powered/less torque?

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JAinVA    4,623

JAinVA
Posted

Provided that the replacement engine is the same horsepower or higher then shaft size is about packaging.Most small horsepower aircooled engines are 3/4" shafted.There is more rigidity the bigger the shaft size but the manufacturers don't make engines with output shafts that fold up under load.You should be fine with the mentioned adapter sleeve or a smaller ID pulley.JMHO,JAinVA 

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