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Author Topic: counterweight for cordwood saw  (Read 629 times)

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Offline penfrydd

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counterweight for cordwood saw
« on: October 20, 2017, 07:57:27 PM »
I picked up a older, used cordwood saw today.  3 point hitch.  PTO shaft powered.  I've been doing firewood for over 40 years, but never had one of these saws.  I hooked it up and it cut fine, but it seems to me that it should have some sort of counterweight on the end of the shaft opposite the blade.  Obviously, it would have to be of a fairly small diameter so that it doesn't interfere with the incoming wood.

Should there be a counterweight or not?

Offline hedgerow

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Re: counterweight for cordwood saw
« Reply #1 on: October 20, 2017, 09:20:30 PM »
Some of the cord wood saws had a flywheel but most didn't. I have had several three point PTO driven and none had a flywheel. The one I use currently use I made  it runs a 13 HP gas engine and I don't run a flywheel on it and it cuts fine.

Offline 47sawdust

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Re: counterweight for cordwood saw
« Reply #2 on: October 21, 2017, 08:22:56 AM »
A google search of cordwood saws shows hardly any with a flywheel.Mine is pto driven by the tractor and I think the tractor pto system is flywheel enough.
Mick
1997 WM Lt30 1999 WM twin blade edger Kubota L3750 Tajfun winchGood Health Work is my hobby.

Offline North River Energy

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Re: counterweight for cordwood saw
« Reply #3 on: October 21, 2017, 03:32:21 PM »
I think the flywheel is a holdover from the flat belt drive era. Those were run loose, and the flywheel would 'carry' the blade through the slippage.

I've a LaFont buzzsaw powered by a 16hp motor, no additional flywheel, works well.

Offline TKehl

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Re: counterweight for cordwood saw
« Reply #4 on: October 22, 2017, 09:38:09 AM »
That and it wasn't uncommon to run them off of hit and miss engines which are often <5HP. 
Lucas 6-13+slabber, Mr. Sawmill bandmill, orange chainsaws, JD SSL, Case Backhoe, farm tractors, trailers, and 150ish acres of trees.  Fledgling woodshop with CNC router, laser engraver, Woodmaster 712, and a Berlin 108 moulder (project).  Oh, and a lovely (patient) wife and four offbearers.

Offline Corley5

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Re: counterweight for cordwood saw
« Reply #5 on: October 23, 2017, 11:32:41 AM »
Flywheels also smooth out the impulses from single cylinder engines especially the hit and miss variety.
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