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Thread: Club FOX!


  1. #2276

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    RE: Club FOX!

    rule of thumb, if you run an 11'' 2 blade prop, go down in dia. to a 10'' 3 blade or go down in pitch 1 point. try both and see which performs the best. if you have a tachometer use that or just see how well your eng. is pulling in the vertical, and/or take off and climb out. with 3 blade you will lose a little efficiency compared to a 2 blade prop., hence the need to reduce prop dia. or pitch. HOPE this helped.



    remember: fly in the middle of the air, danger lurks at the edges!!!!!!!!!!!!!

  2. #2277
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    RE: Club FOX!

    Couger, a 12x6 three blade would be perfect, Master Airscrew makes one and a better looking one can be found here. The MA one is prebalanced.

    www.zingerpropeller.com

    http://www.zingerpropeller.com/3_bladed_Propeller.htm
    Farmall 240 the final issue of the Farmall C, Super C, 200, 230 series.
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    Club Saito member #5

  3. #2278

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    RE: Club FOX!

    I tried a 12x6x3 prop on the test stand and the engine revved about the same or better than a 13x6 on my Fox 74 Eagle IV. I plan on using that on the plane I will install it on for next season.
    Content, but not Complacent.

  4. #2279
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    RE: Club FOX!

    This is the smaller Eagle IV, (60). Will that prop selection still work? Asking as I have a 13/8 on my Saito 91 and that has considerably more torque.
    Club Saito Member # 787
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  5. #2280
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    RE: Club FOX!

    Yeah I think the 12x6 three blade would be fine on the Eagle IV .60 engine.

    Club Saito #722, Sig Kadet Brotherhood #80, GlowHead Brotherhood #14,
    AMA # 928076

  6. #2281

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    RE: Club FOX!

    I saw a picture of a Fox 120 twin, like two 60's put together, in another thread (forgot just where). When did Fox do this - are there any available out there? It would be fun to mess around with that motor - something different for sure!
    Jim S.

  7. #2282

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    RE: Club FOX!

    There's one on ebay right now with 7 1/2 hours left of the auction. Its at $150 with 3 bids. They pop up on ebay or rcuniverse.com once in a while.

  8. #2283
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    RE: Club FOX!

    That might have been my twin you saw. They show up on Ebay from time to time. The price runs around $200 to $350 US or thereabouts.
    Yes it is made from two Fox Eagle III engines combined. Dual carbs and a alternate firing sequence. It tends to sound more like a old twin cylinder two stroke motorcycle engine.
    Fox made them in in 1979 through the early 1980's. They are very powerful engines, you also run smaller props on them, as they like to rev up and not lug down with big props.
    So a 13x6 up to maybe a 14x6 is the prop range.
    For whatever reason, a lot of modellers have trouble adjusting Fox carbs. So if you have trouble adjusting a Fox carb, then having to deal with two Fox carbs might be an insurmountable obstruction.







    Club Saito #722, Sig Kadet Brotherhood #80, GlowHead Brotherhood #14,
    AMA # 928076

  9. #2284

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    RE: Club FOX!

    Thanks for the picture, Earl. That is a neat motor! I have messed around with Fox motors for a while, have two planes flying with them now. Something Extra and Skyshark Fantasy with 45 and 46 (forget which has which).  I know the carbs are sort of a problem sometimes and I imagine having to get two of them working together would be tricky. That's what makes modeling fun.
    I see Fox has a new carb again, I'm tempted to try one - $40 I think. The guys in the club say why do that, you can buy a whole new Chinese motor for that! I tell them I don't want a new Chinese motor!
    Has anyone tried one of these new carbs?
    Jim S.

  10. #2285

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    RE: Club FOX!

    I have one on a Fox 74 Eagle IV. I find it easy to set and is a good carb.

    Bruce
    Bruce L. AMA# 54227
    Ultra Sport Brotherhood #15

  11. #2286

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    RE: Club FOX!


    ORIGINAL: shark again

    Thanks for the picture, Earl. That is a neat motor! I have messed around with Fox motors for a while, have two planes flying with them now. Something Extra and Skyshark Fantasy with 45 and 46 (forget which has which).* I know the carbs are sort of a problem sometimes and I imagine having to get two of them working together would be tricky. That's what makes modeling fun.
    I see Fox has a new carb again, I'm tempted to try one - $40 I think. The guys in the club say why do that, you can buy a whole new Chinese motor for that! I tell them I don't want a new Chinese motor!
    Has anyone tried one of these new carbs?
    Jim S.
    A lot of the guys here have the new Two Needle (TN) carb. I swapped my old EZ carb for a new TN, even though I did not have much trouble with the old one. The transition seems smoother with the new TN, although the EZ had rapid transition. The truth is, I have not flown it yet with the new carb. But on the bench, it runs perfect.
    Content, but not Complacent.

  12. #2287
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    RE: Club FOX!


    ORIGINAL: KeroPower

    I wonder what the special sale is going to be on Monday October 24th? Maybe 40% off perhaps? I will make sure I check it out Monday. I am thinking about getting the .60.
    Looks like the special sale is to get rid of some 55 cc gas engines.
    Glow Head Brotherhood #15

  13. #2288

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    RE: Club FOX!


    ORIGINAL: Sport_Pilot


    ORIGINAL: KeroPower

    I wonder what the special sale is going to be on Monday October 24th? Maybe 40% off perhaps? I will make sure I check it out Monday. I am thinking about getting the .60.
    Looks like the special sale is to get rid of some 55 cc gas engines.
    I didn't know Fox sold DLE engines!! I thought they serviced them only. What do I know??
    Content, but not Complacent.

  14. #2289
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    RE: Club FOX!

    Yes the new Fox carb is a really nice carb. I have no qualms about swapping out old carbs for the new one. I have been doing it on some of my engines already.
    Club Saito #722, Sig Kadet Brotherhood #80, GlowHead Brotherhood #14,
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  15. #2290

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    RE: Club FOX!


    ORIGINAL: hsukaria


    ORIGINAL: Sport_Pilot


    ORIGINAL: KeroPower

    I wonder what the special sale is going to be on Monday October 24th? Maybe 40% off perhaps? I will make sure I check it out Monday. I am thinking about getting the .60.
    Looks like the special sale is to get rid of some 55 cc gas engines.
    I didn't know Fox sold DLE engines!! I thought they serviced them only. What do I know??
    I must say I was a little disappointed. I thought the sale was going to include their glow engines. I wonder if they sold all the DLE engines? I have no use for a 55cc engine. I do not need anymore engines right now anyway. I am very happy with my Fox .40 R/C sport I bought abouttwo years ago. Runs real nice. Carb needs little to noadjusting once set. It came with their new cube shaped carb.

  16. #2291

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    RE: Club FOX!



    I just wish they came with quieter mufflers that did not tilt up or down. Right now I have an O.S. FSR .40 muffler on my Fox.40. I had to elongate the holes a little bit and do some filing to get it to fit. It is pretty quiet now. I am using a Zinger 10x6 wood and no nitro home brew.


  17. #2292
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    RE: Club FOX!

    Kero, I totally agree about the noise level and a few of us have done the same. Due to the performance did not want to get rid of the motors just for that problem. My 50BB now has an OS muffler and just fit a Quiet Muffler on my Eagle IV. As for the 50 I would estimate the sound level dropped to half of before. I haven't run the Eagle yet as I just picked up a plane to put it in last weekend.

    If you back up in this thread you can see mine and other muffler mods. Mine required adapters and I was able to fab them out of 7075 alloy, same material as propellors.
    Club Saito Member # 787
    FA91, 100, 2 X 125a, 150

  18. #2293
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    RE: Club FOX!

    IMO the Fox mufflers are not bad for an unbaffled single chamber design. I don't recall the FSR muffler as being that quiet either.
    Glow Head Brotherhood #15

  19. #2294

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    RE: Club FOX!

    I ended up purchasing an MVVS 2-chamber muffler (Quiet) for my Eagle 74. Really makes it quiet with no performance drop compared to the Fox Tilt up/down. Besides, the plane I will put it on this winter cannot fit a tilt up/down muffler anyway (I have both). I don't know about the 40-50 sizes, but the MVVS muffler fit the Fox Eagle 74 without modifications or adapter.
    Content, but not Complacent.

  20. #2295
    Cougar429's Avatar
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    RE: Club FOX!

    Sport pilot, I modded my OS mufflers that came without them with baffles. Made a difference in sound levels and only a slight drop in performance.
    Club Saito Member # 787
    FA91, 100, 2 X 125a, 150

  21. #2296

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    RE: Club FOX!

    i'm experimenting with mufflers using aluminum window screen material and course steel wool much like the old auto hot rod glass pack mufflers. i haven't as yet been able to test performance perimeters and noise reduction as of yet, been doing a lot of hunting, etc. this year. i'll get back on track soon and will update, stay tuned!!!!!!!

  22. #2297

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    RE: Club FOX!

    I plan on experimenting with a mousse can muffler next. But I don't know how to do the stinger. Weld it? JB Liquid Weld? RTV? Also, what stinger diameter and length? Questions that I will have to get answers for before I proceed.
    Content, but not Complacent.

  23. #2298

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    RE: Club FOX!

    i'd use maps gas and aluminum solder rod from welding supply. stringer of course would have to be aluminum also. polk some holes in a pop can and experiment with the alum. solder to get a feel for it. maps gas burns cleaner than propane gas and others. i was able to try this method out at a trade show and fell in love with it and have used this method since. hope this helps.

  24. #2299

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    RE: Club FOX!


    ORIGINAL: fujiman

    i'd use maps gas and aluminum solder rod from welding supply. stringer of course would have to be aluminum also. polk some holes in a pop can and experiment with the alum. solder to get a feel for it. maps gas burns cleaner than propane gas and others. i was able to try this method out at a trade show and fell in love with it and have used this method since. hope this helps.
    Thanks fujiman, I'll try that. Would you (or anybody else here) know where I can get the stinger tubing?
    Content, but not Complacent.

  25. #2300

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    RE: Club FOX!

    What is a stinger and MAPS gas?
    ORIGINAL: fujiman

    i'd use maps gas and aluminum solder rod from welding supply. stringer of course would have to be aluminum also. polk some holes in a pop can and experiment with the alum. solder to get a feel for it. maps gas burns cleaner than propane gas and others. i was able to try this method out at a trade show and fell in love with it and have used this method since. hope this helps.


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