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Engine basics => Engine set up tips => Topic started by: Frank Sheridan on July 24, 2009, 04:49:08 PM
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I am building a "Ruffy" which will be powered by a Fox 35 w/hemi head and stuffer plate. Any suggestions for a prop choice would be appreciated. I will be using a uniflow tank and ST type needle valve assembly.
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The universal size prop for the Fox is usually a 10/6 or 10/5
Dennis
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my fox with the same add ons really likes the APC 10 X 5. the RSM 10 X 6 is also a good one as is the Rev-Up 10 X 6W .
Bigiron
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My Ruffy/Fox, circa 1965, was a great flier using the old Tornado 9-6 3-blade prop (the old silver one). Gave a little more ground clearance, too.
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My Fox is like yours except that I took the hemihead off because it was too powerful. I'm running a Taipan 11 x 5. People say the APC 10.5 x 4.5 is a good prop for the Fox 35. It's a matter of fly and try.
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The RSM 10X6 is outstanding on both Fox 35 and OS Max S 35 engines. It's pitch measures a little less than 6, so it is more like a 10X5.5. It is also light and pretty well balanced as it comes of of the package.
Steve
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The RSM 10X6 is outstanding on both Fox 35 and OS Max S 35 engines. It's pitch measures a little less than 6, so it is more like a 10X5.5. It is also light and pretty well balanced as it comes of of the package.
Steve
I agree, I have been using one on my Fox 35 with hemi head and stuffer back[late on my Arctic fox and it really works good.Also the old BYan O's work very well. HB~> HB~>
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I am building a "Ruffy" which will be powered by a Fox 35 w/hemi head and stuffer plate. Any suggestions for a prop choice would be appreciated. I will be using a uniflow tank and ST type needle valve assembly.
If you can find them, I always found the Top Flite 10-6 (rounded blade, not the new PowerPoint type) to be the best overall.
Brett
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Brett, are we talking wood or nylon props?
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Brett, are we talking wood or nylon props?
Oh, wood, of course. The nylon props are too flexible, and at this point they are all old enough that I would be concerned about them flying apart, even after boiling them.
Brett
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I sometimes wonder about this "flying apart" of nylon props (yellow ones and TF red and white)...I have heard about.. read about it... have used them a lot in the beginning of my modeling career.. but I have never seen one come apart when used on a stunt engine..
Wood is a good way to go as Bret stated about flexibility.. I have used the black thin bladed Master Airscrews on my OS 35s with great results.. I like them because they balance easy.. and they are cheap and come in a wide array of sizes that my local HS seem to carry... a great RC prop..
Sometimes when a Fox is "working too hard".. I switch from a TF 10x6 to a 10x5, these are the round blade ones... my favorite... I have a nice supply of them. I find the BY&O 10x6 can be too much and use a 10x5 unless you up the nitro.. 10% nitro with 25% castor... is a good compromise... a little more oil if it is 80 degrees or above.
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If you can find them, I always found the Top Flite 10-6 (rounded blade, not the new PowerPoint type) to be the best overall.
Brett
I agree with Bret, but I have not used the RSM props, yet. The BY&O props can work, but I found a great deal of variance in pitch from what's stated. means reworking or going through a bunch of props.
The old Rev UP 10-6Ws were very good.
Marvin (bigiron) is THE Fox 35 GURU! I will have to try the APC 10-5 since he has always said it works so well.
Big Bear