Model Boat Mayhem
Mess Deck: General Section => Model Boating => Topic started by: Timborgini on December 18, 2017, 09:04:56 am
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Hi there iam new to this hobby and would like to know how big is the prop for a Vosper pt boat 1.32 scale theres a plastic one on it but i want a brass one can anyone help please ...
Cheers Tim O0 O0 O0 O0 O0 O0
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Hi Tim,
Welcome to the Mayhem!
Prop sizing are not a 'precise science', depends on motor size & power, battery Type & voltage, Hull design, shape, size, weight, prop position, required speed, depth of your pockets, etc, etc. Best place to start is a brass prop of a similar size and pitch!
A soldered brass prop may not prove to be very robust in high power installations......!
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its a 1.32 scale vosper PT BOAT and i am new to the game and just need advice on what type and size prop i would need please
Kind regards
Tim
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Hi Tim and welcome to Mayhem. First is the plastic prop 2 or 3 blade? Have you sailed it with this prop? if so how did it go and what size is the prop? Brass props are stiffer than plastic so you might have to reduce the diameter slightly.
Come back with the details and can advise further
Mark
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Photos from Tim...
I aint got a clue but as you can see from the pic it dont look right ....
(http://modelboatmayhemimages.co.uk/images/2017/12/18/Prop1a.jpg) (http://modelboatmayhemimages.co.uk/image/8OO2X)
(http://modelboatmayhemimages.co.uk/images/2017/12/18/prop2a.jpg) (http://modelboatmayhemimages.co.uk/image/8Oije)
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Iv'e heard of the Andrew but not the Royal nary ?? Whats a nary anyway ?
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{-) {-) {-) {-) {-) {-) {-) {-)
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Iv'e heard of the Andrew but not the Royal nary ?? Whats a nary anyway ?
Well spotted Baldrick! %%
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>>:-( >>:-( >>:-( its how it was made lolol
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still does not get me any closer as to what size prop i need ... :P :P :P
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That looks like a racing 'X' prop on it at the moment, what diameter is it?
Show us a photo of the motor...
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Hi there, the rudder could do with changing as well. :-))
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Hi Tim, Had a close look at your pic, it looks like the prop has been fouling the hull, so its to big. Weird way to mount the prop as well, a nylock nut with an alloy spacer behind it!!!!!
Show a pic of the motor, also if you can remove the prop from the shaft so can see the prop driver, depending on the motor and space i'm thinking about 40mm 3 blade brass, nice ones from Raboesch, but all depends on the motor, pic and any details such as name, size etc.
Mark
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I don't think that it's that prop that has been fouling the hull!
Agree about the rudder as well!
Chris
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It looks like the shaft is too long for the tube, unless the inner end has been badly fitted. A picture or two of the motor and coupling will help.
Tim, no one here can just name a prop for you, the prop has to match the motor. If you help us, we can help you
Chas