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Type: Posts; User: mmattockx

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  1. Flow is not the issue there, trapping the maximum...

    Flow is not the issue there, trapping the maximum amount of the intake charge in the cylinder is. Those ports are designed to aim the incoming charge to a specific spot in the cylinder in order the...
  2. I decide more based on the model and what it is....

    I decide more based on the model and what it is. For instance, a scale model of an aircraft that was originally a fabric covered built up structure would get a built up wing for scale accuracy. Foam...
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    Some photos of your setup would help a lot in...

    Some photos of your setup would help a lot in suggesting some improvements


    Mark
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    Chris, Communist, eh? That's funny. The only...

    Chris,

    Communist, eh? That's funny. The only thing I envy about Kalifornia is some of your roads. The motorcycle riding is absolutely spectacular in many spots. Anyhow, we may be digressing from...
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    A recent thread on ignition batteries with some...

    A recent thread on ignition batteries with some good info: http://www.rcuniverse.com/forum/gas-engines-142/11607116-battery-recommendation-please.html

    I second ahicks recommendation for the A123...
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    I'll take the snow, the great skiing that comes...

    I'll take the snow, the great skiing that comes with it and no crazy politics over that any day. However, YMMV. Enjoy the day, it does look like a beauty.


    Mark
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    Not a kit, but the plans. Outerzone has both the...

    Not a kit, but the plans. Outerzone has both the original 48" span plans and the 53" span Aeromaster Too wing set.

    Aeromaster: http://www.outerzone.co.uk/plan_details.asp?ID=1971

    Aeromaster...
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    Tom, I was just pointing out that the...

    Tom,

    I was just pointing out that the Hiperbipe you and All Day Dan are mentioning is not the same as the one in OP. Your comments about scratchbuilding are correct, but that doesn't help OP...
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    It was an oddball distance originally but a...

    It was an oddball distance originally but a previous owner drilled out the holes to match the OS 32.11mm distance. I will take a look at the 25LA muffler, thanks.


    Mark
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    The only problem with that is your Hiperbipe and...

    The only problem with that is your Hiperbipe and the one in OP are not the same thing, the same as noted by grover1 in post #10. OP's is a non-scale ARF fun fly model and the plan you posted is a...
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    That's interesting. I have to admit that I have...

    That's interesting. I have to admit that I have never used it on a model engine but it does work pretty well on degunking old motorcycle carburetors and they are essentially the same materials. No...
  12. I would tend to agree. The only problem with a...

    I would tend to agree. The only problem with a short joiner is that you get very high forces at the end of the tube where it terminates inside the wing. Bending moment reduces very quickly as you...
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    For those that want to avoid the toxicity of...

    For those that want to avoid the toxicity of antifreeze, Simple Green works very well in the crock pot too and won't kill anything with the fumes or liquid.


    Mark
  14. David, Root is 13.1", tip is 8.3", span is 65"...

    David,

    Root is 13.1", tip is 8.3", span is 65" with a 1.25" thick tip block (ie - each core is 31.25" span and has a root chord of 13.1" and a tip chord of 8.3") and TE forward sweep is 1.375" as...
  15. Speaking of Tipo's, I have been tracing Dick...

    Speaking of Tipo's, I have been tracing Dick Hanson's original Model Builder plans into autocad and decided to check the wing area. It measures out at 668sq.in. Being under the impression that the...
  16. Art, The 5/8" tube was for my model. You need...

    Art,

    The 5/8" tube was for my model. You need to go through the same calculations for your own model the same way I did. I can't imagine a 5/8" tube is going to be adequate for a 100" span, 12+lb...
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    Crank the spring tension up a bunch, too. Most...

    Crank the spring tension up a bunch, too. Most radios are sold with the stick tension set super low and that is not conducive to precision work.


    Mark
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    Servo speed has nothing to do with how smooth you...

    Servo speed has nothing to do with how smooth you are on the sticks. The perfect servo would have infinite resolution and would follow the stick movements perfectly with no lag at all. If the plane...
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    Just measure the outside dimensions and then use...

    Just measure the outside dimensions and then use those to draw the outlines, scale it to whatever size you want and fill in your own structure. Going from a smaller model up to a 50cc will require...
  20. I sized my tube based on the allowable stresses...

    I sized my tube based on the allowable stresses for carbon fiber laminate that Dr. Mark Drela used on his Alegro Lite and Bubble Dancer gliders. I decided on a 25G load (somewhat WAG, but not...
  21. Sizing a wing tube for a scratch designed model?

    I am designing a 40 sized Voodoo Express type model and need some guidance on sizing the wing tube. Span is 53.5", area is 600sq.in. and target weight is 5-5.25lb (hopefully less, but we all know how...
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    downunder, that was an excellent summary of some...

    downunder, that was an excellent summary of some very comprehensive, complicated subjects in a few lines.


    Mark
  23. Thread: Akrobat II

    by mmattockx
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    Ask and ye shall receive: ...

    Ask and ye shall receive: http://www.airagestore.com/planes/akrobat-ii.html


    Mark
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    Thanks for the reply. This is pretty much the...

    Thanks for the reply. This is pretty much the issue at this point. I bought the engine years ago when there was no such thing as a decent small gas engine and then ended up getting out of the hobby...
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    That sucks. Lanier were bought up by Great Planes...

    That sucks. Lanier were bought up by Great Planes and they don't list anything but the Stinger in ARF form. I had a look at outerzone and they show nothing for Staudacher plans so you may be stuck...
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