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-   -   4 blade prop vibration (https://www.offshoreonly.com/forums/general-boating-discussion/266867-4-blade-prop-vibration.html)

SHAWN DAVIS 12-07-2011 09:02 AM

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?

RunninHotRacing163.1 12-07-2011 09:09 AM


Originally Posted by SHAWN DAVIS (Post 3566163)
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 :eek:




ROCK ON !!!!!!!!!!!!!!!!!!!!!!!!!!:coolcowboy:
ITS A SKATER NATION !!!!!!!!!!!!!!!!!!!!!!!!!!!:drink:

Coolerman 12-07-2011 10:27 AM

Every set of 4 blades we had on our boat a while back had vibrations, some worse than others.... no issues with 5+ blades.

SHAWN DAVIS 12-07-2011 12:09 PM

Well then.....
We did run some of them 3 bladed cutters a while back, ended up sinking with the broken propshafts!

RunninHotRacing163.1 12-07-2011 12:13 PM


Originally Posted by SHAWN DAVIS (Post 3566288)
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







ROCK ON !!!!!!!!!!!!!!!!!!!!!:coolcowboy:
ITS A SKATER NATION !!!!!!!!!!!!!!!!!!!!!!! :drink:

thumper038 12-07-2011 01:15 PM

I often wondered???
Can this be balanced out or is it nature of the beast?
(4blade)

thumper038 12-07-2011 01:16 PM


Originally Posted by SHAWN DAVIS (Post 3566288)
Well then.....
We did run some of them 3 bladed cutters a while back, ended up sinking with the broken propshafts!

:eek:

RunninHotRacing163.1 12-07-2011 01:20 PM


Originally Posted by thumper038 (Post 3566349)
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 :eek: sent mine back to BB!@des 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





ROCK ON !!!!!!!!!!!!!!!!!!!!!:coolcowboy:
ITS A SKATER NATION !!!!!!!!!!!!!!!!!!!!!!! :drink:

thumper038 12-07-2011 01:24 PM

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:coolcowboy:

Steve 1 12-07-2011 01:26 PM

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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