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4 blade prop vibration

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Old 12-07-2011, 10:02 AM
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Default 4 blade prop vibration

Got some 34 4 blades, used for squirting around the small lake here, vibrate the boat pretty good, is this a balance or cup issue? The 5 blade 41's are smooth as silk.....
I have access to a dynamic balancer, anyone do this themselves?
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Old 12-07-2011, 10:09 AM
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Got some 34 4 blades, used for squirting around the small lake here, vibrate the boat pretty good, is this a balance or cup issue? The 5 blade 41's are smooth as silk.....
I have access to a dynamic balancer, anyone do this themselves?
Shawn our 4 blades did the same right out the box, and the 5s run smooth as silk ... should try a set of 3 blades if you wanna feel some Vibration




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Old 12-07-2011, 11:27 AM
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Every set of 4 blades we had on our boat a while back had vibrations, some worse than others.... no issues with 5+ blades.
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Old 12-07-2011, 01:09 PM
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Well then.....
We did run some of them 3 bladed cutters a while back, ended up sinking with the broken propshafts!
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Old 12-07-2011, 01:13 PM
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Well then.....
We did run some of them 3 bladed cutters a while back, ended up sinking with the broken propshafts!
Peter said back in the day when they raced with the 3 blades it was BRUTAL







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Old 12-07-2011, 02:15 PM
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I often wondered???
Can this be balanced out or is it nature of the beast?
(4blade)
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Old 12-07-2011, 02:16 PM
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Originally Posted by SHAWN DAVIS View Post
Well then.....
We did run some of them 3 bladed cutters a while back, ended up sinking with the broken propshafts!
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Old 12-07-2011, 02:20 PM
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I often wondered???
Can this be balanced out or is it nature of the beast?
(4blade)
Jim i'd say its the nature of the Beast sent mine back to [email protected] for a tweak and balance and came back the same .. $s for a speed run is livable 5s for just playin .. wonder how a set of 6 blades react





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Old 12-07-2011, 02:24 PM
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Yep Bill, that is what I thought, I have a set of 34 4 blades.
I would like to set up them on the balancer and see what that says? Just for curiosity ( Like I have time for that )
Blessed to be busy
Jim

Last edited by thumper038; 12-07-2011 at 02:39 PM.
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Old 12-07-2011, 02:26 PM
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LOL in the very early days we ran 3 blades on the Arnesons,I stopped and checked the "U" Joints more than once,those blades loading and unloading will cause amazing vibrations,Rolla with the 6 blades made them smooth as silk.
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