how can you tell if you prop is cavatating? - RC Groups
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Nov 18, 2009, 10:09 PM
chronic in training
grfcon's Avatar

how can you tell if you prop is cavatating?

is there any type of sound to it?
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Nov 18, 2009, 10:19 PM
Fly me to the moon...
Atom1025's Avatar
It will make an awful sound. The 8x4 GWS sounds like Chewbacca yelling. I think the blades are actually flattening out, GWS are notorious for this and RPMs should not exceed the rated limit.

Do you mean its not biting the air or its flattening out? What prop?
Nov 18, 2009, 11:32 PM
The Kid
Thekid3418's Avatar
The secret is, no prop or airscrew "cavitates". They can stall though

One person theorized that the stalled sound was the prop-tips vibrating do to the high pressure as the tips approach the speed of sound. It'll make an insanely low nose, and make a loud "whoosh"ing nose as the prop attempts to bite the air.
Nov 19, 2009, 01:30 AM
chronic in training
grfcon's Avatar
no awful sound... I converted this glider wing to power but beefed it up WAY too much.... was underpowered at about 40 oz with a suppo 2217-6... so I added another one I am hoping the twin will fly but it will weigh about 3 lbs. when balanced when ready. running an apc 7x5(e or sport...cant remember offhand) on em and I think that it will have enough power...though I won't be catching it on landings anymore at triple the wing loading you guys think this old dog will fly ? it is a boomerang conversion. frank cavazos design.. I think he XE combat wings are similar and they used to sell his stuff.. a friend of mine has the XE and the foil looks pretty similar. hoping to fly it in about two weeks as it is almost ready... thoughts are appreciated and wish me luck

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