Crankshaft Balancing...Part II
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Topic author - Posts: 387
- Joined: Sun Jan 06, 2019 11:04 am
- First Name: Tim
- Last Name: Rogers
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Crankshaft Balancing...Part II
Thank you all for your great input on my original post! However, based on the advice given, am I to understand that this counterweighted crank cannot be successfully balanced statically? If so, why?
<o><o><o><o> Tim Rogers - South of the Adirondacks - Forum member since 2013 <o><o><o><o>
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Re: Crankshaft Balancing...Part II
At least you pick the heavier one to weld the weights on to, I had an engine that came in with the Dunn's weight on it, had a bad vibration to it, sent it out for dynamic balancing, fired it back up and it still had it, removed the weights and rebalanced and it was gone???? I do not know if to much weight or in the wrong location? These where the after market ones not the originals? Just telling what I had found out years ago on one.
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Re: Crankshaft Balancing...Part II
Scott Conger
Tyranny under the guise of law is still Tyranny
NH Full Flow Float Valves
Obsolete carburetor parts manufactured
Tyranny under the guise of law is still Tyranny
NH Full Flow Float Valves
Obsolete carburetor parts manufactured
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Re: Crankshaft Balancing...Part II
Joe
I installed a set of the new Dunn weights more than 40 years ago on my 27 roadster. I labored over the installation to avoid any bending stress in the crank. I’ve been totally happy with it ever since. I think the fitting is the key
I installed a set of the new Dunn weights more than 40 years ago on my 27 roadster. I labored over the installation to avoid any bending stress in the crank. I’ve been totally happy with it ever since. I think the fitting is the key
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Topic author - Posts: 387
- Joined: Sun Jan 06, 2019 11:04 am
- First Name: Tim
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Re: Crankshaft Balancing...Part II
Thanks Scott- I believe I understand now.
<o><o><o><o> Tim Rogers - South of the Adirondacks - Forum member since 2013 <o><o><o><o>
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Re: Crankshaft Balancing...Part II
Just got my balanced rotating engine assembly back from the machine shop.
The stock crank was previously balanced by itself.
The magnets were weighed and placed to best statically balance (offsetting weights).
It came back with five drilled 3/8 drilled holes. The deepest was about 1/2 inch.
Three were adjacent to each other but one was about 30 degrees over.
Harry
The stock crank was previously balanced by itself.
The magnets were weighed and placed to best statically balance (offsetting weights).
It came back with five drilled 3/8 drilled holes. The deepest was about 1/2 inch.
Three were adjacent to each other but one was about 30 degrees over.
Harry
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Re: Crankshaft Balancing...Part II
Tim, This was easier for me to understand. http://www.antiqueautoranch.com/montana ... page4.html