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props for a true scale

Old 06-27-2011, 10:52 AM
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Default props for a true scale



does any one out there know what it would take to turn an 39 inch diameter four bladed prop and if so who makes such an engine as well as the prop . i'm also having a hard time finding true to scale rim's and tires i'm building an 1/4 scale Vought F4U Corsair , i'm trying to do my best to keep it true to scale from the origanal plane. i was able to find retract's but no wheels or rim's , and i have yet to find a prop larger than 28 inches , i have however found an 800cc radial but have since lost the internet site that i found it on. so any and all help on my project is greatly appreciated </p>
Old 06-27-2011, 12:06 PM
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Default RE: props for a true scale

Really a bundle of thanks for sharing this specific piece of information. Quite amazing placement from your side. IF somebody has more stuff regarding it. Well do you think really that<font size="2" face="Verdana, Arial"> "a four blade propeller will offer more "grip"?"
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Old 06-27-2011, 12:40 PM
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Default RE: props for a true scale

it's not for the grip but rather to keep the plane true to scale
Old 06-27-2011, 01:28 PM
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Default RE: props for a true scale

You will probably find more people offering advice in Giant Scale or Scale Models. This forum is for Full Scale, as in man carrying airplanes that people ride in.
Chris...
Old 06-27-2011, 01:35 PM
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Default RE: props for a true scale

You can have a scale prop for static and another for flying (that's what most do). Also a 215 Moki Radial would be ample power - 800 and you'll pull the wings off - not to mention the CG problem you'd be creating for yourself!
Old 06-27-2011, 04:36 PM
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Default RE: props for a true scale

what about the new engine offered by horizon hobby called an evolution engine 7 cylinder radial 260 cc, would it be ample or still to much ?
Old 06-27-2011, 04:37 PM
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Default RE: props for a true scale

oh ya , and what prop would you recomend for flying and not static ?
Old 06-27-2011, 06:44 PM
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Default RE: props for a true scale

http://www.youtube.com/watch?v=ywcjS...eature=related

Here is an example of what you will have to do, There is a company in Germany that make the reduction drives for what ever set up you want. First you will have to decide the engine you want to use then they will make a system for it. In your case you should contact them, tell them what prop you want to use and they will tell you what engine you will need in terms of horse power. There is also the Moki 400 radials that are tons of power. It will swing the prop you want to use with no problem. Trouble is its a big heavy engine. Just make sure it will fit in the cowl and the front of the Corsair is super strong and the rest of the fuse very strong. With either system its going to cost you a pretty penny around 5 to 6 thousand. If money is no fuss for you then that`s the way to go.
Old 06-27-2011, 08:25 PM
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Default RE: props for a true scale

http://www.heger-technik.de/

http://www.rcmovie.de/video/a7fafddb6c2bd344e7a5/TOTAL-IRRE-!!!.
Old 06-30-2011, 07:57 AM
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Default RE: props for a true scale

Try soloprops.com for the prop and glennis.com for the tires and wheels.
Old 07-03-2011, 07:17 AM
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Default RE: props for a true scale

thankyou sincerly for the two sites to help find what i'm looking for
Old 07-03-2011, 09:03 AM
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Default RE: props for a true scale

If not mistaken, a 1/4 scale Corsair would have a wingspan of around 100". All decked out it should weigh no more then 40-45 lbs. That puts you in the engine range of 100-120cc. Those engines are going to spin 28-30" props. Anything larger and you will loose thrust and the airplane will not have enough power. If you install an engine large enough to swing a 39" 4 blade. you will be adding serious weight and again the airplane will not fly because of too high a wing loading.
Old 07-03-2011, 04:24 PM
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Default RE: props for a true scale

Also for a 39" 4 blade prop the corsair would have to be much bigger more like 1/3 scale.
Old 07-03-2011, 04:26 PM
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Default RE: props for a true scale


ORIGINAL: 91zulu

Also for a 39'' 4 blade prop the corsair would have to be much bigger more like 1/3 scale.

Actually 39 inches is almost exactly 1/4 scale.
Old 07-03-2011, 08:06 PM
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Default RE: props for a true scale

Yes but 39" 4 blade on a 100" Corsair not going to fly. That`s going to hit the ground for sure. A bigger bird will give you the clearance.
I have a 100" Me 109 with a 23" prop and that`s not too far from the ground.
Old 07-03-2011, 09:08 PM
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Default RE: props for a true scale

ORIGINAL: 91zulu
Yes but 39'' 4 blade on a 100'' Corsair not going to fly. That`s going to hit the ground for sure. A bigger bird will give you the clearance.
I have a 100'' Me 109 with a 23'' prop and that`s not too far from the ground.
A 1/4 scale Corsair will have a span of 123 inches. If it is only 100 inches then it is actually just a shade over 1/5 scale and needs a 32 inch prop.
Old 07-03-2011, 09:24 PM
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Default RE: props for a true scale

123 would be more like it.
Old 07-04-2011, 02:34 PM
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Default RE: props for a true scale

and you are correct the wing span is 123 inch . i found true to scale wheel's at 8" . and true to scale nuematic landing gear from century jet.

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