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Echo 30.1 Chainsaw hub?

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Old 07-14-2013, 03:55 PM
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jp1961
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Default Echo 30.1 Chainsaw hub?

I'm starting to convert a 30.1CC Echo chainsaw engine. My question is does the prop hub HAVE to thread into the crankshaft? I'm thinking about machining a prop hub that bolts to the flywheel using the starter dog holes already there. Seems like Zenoah and Fuji use this concept already.

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Old 07-14-2013, 06:00 PM
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w8ye
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Default RE: Echo 30.1 Chainsaw hub?

The bolt on type creates a little more effort to assure alignment.
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Old 07-16-2013, 05:50 PM
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Default RE: Echo 30.1 Chainsaw hub?

Most of the prop drivers are setup to just fit over the crankshaft. They then use a bolt through the center to hold it on. Usually they have woodruff keys in there too. Bolting it on is fine, if you can keep it centered OK.
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