Found a service after a lengthy search of a year and change and a boatload of refusals, a company in New York, Schenck Trebel Corporation will balance our props to a desired SERVICE rpm. Contact is Joe Palazzolo, Senior application engineer supervisor of the balancing services. They are a production facility providing balancing services for just about anything. Was very suprised to see he would even bother with something as small as our props.
I have included a couple pics on a junk test prop and 2 of the 4 sheets of balance data that came back, quite a huge difference with the before and after. The pics show a dynamic balance to 45k service rpm, Joe said they are capable of taking the balance even higher and would be able to get the target centers nearly dead on, but that would cost more. Right now a flat fee is 45 bucks for what is shown. They made a custom arbor for this and would do so for any prop sent that they did not have on hand. I did not get the arbor back with the prop.
You will need to contact Joe and discuss pricing if you want more or less or do bulk or whatever. You would also need to discuss shipping.
balanceafter.jpgbalancebefore.jpgprop1.jpgprop2.jpgprop3.jpg
One photo flashed a bit to brightly and a balance hole looks rough, the balance holes are clean and smooth. The blade shown is a test mule with basic static balance done before i sent it to him, the photos are what i recieved back. He can dynamically balance any prop for any operating service rpm. For those that do not understand the difference between static and dynamic, static is balanced while still (not operational rpm) dynamic is operational rpm balancing. Big difference. You can see from the results it was quite huge.
As for what the prop did that i got back. suffice to say the high rpm vibration was gone on a friends test boat verse his stock prop (both were 467, throttle limit restricted to 70% because we were dry testing). Folks need to do their own testing and observations since this availability is new for folks.
Email for Joe is: Joseph.Palazzolo@schenck-usa.com
Steve and myself are receiving nothing from this. This is a service i found and and FYI to those that want to use it. Some may find the static balance sufficient since no type of dynamic balance service has been available anywhere until now. So use it or not, curious to see if this does anything for anyone.
I have included a couple pics on a junk test prop and 2 of the 4 sheets of balance data that came back, quite a huge difference with the before and after. The pics show a dynamic balance to 45k service rpm, Joe said they are capable of taking the balance even higher and would be able to get the target centers nearly dead on, but that would cost more. Right now a flat fee is 45 bucks for what is shown. They made a custom arbor for this and would do so for any prop sent that they did not have on hand. I did not get the arbor back with the prop.
You will need to contact Joe and discuss pricing if you want more or less or do bulk or whatever. You would also need to discuss shipping.
balanceafter.jpgbalancebefore.jpgprop1.jpgprop2.jpgprop3.jpg
One photo flashed a bit to brightly and a balance hole looks rough, the balance holes are clean and smooth. The blade shown is a test mule with basic static balance done before i sent it to him, the photos are what i recieved back. He can dynamically balance any prop for any operating service rpm. For those that do not understand the difference between static and dynamic, static is balanced while still (not operational rpm) dynamic is operational rpm balancing. Big difference. You can see from the results it was quite huge.
As for what the prop did that i got back. suffice to say the high rpm vibration was gone on a friends test boat verse his stock prop (both were 467, throttle limit restricted to 70% because we were dry testing). Folks need to do their own testing and observations since this availability is new for folks.
Email for Joe is: Joseph.Palazzolo@schenck-usa.com
Steve and myself are receiving nothing from this. This is a service i found and and FYI to those that want to use it. Some may find the static balance sufficient since no type of dynamic balance service has been available anywhere until now. So use it or not, curious to see if this does anything for anyone.
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