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  1. #251
    Teus's Avatar
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    RE: Seidel 7-70 radial: Help me decide!

    Have fun Don, seems Christmas begins early this year for you

    Teus

  2. #252
    geezeraviation's Avatar
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    RE: Seidel 7-70 radial: Help me decide!

    Running will tell the tale on how the fuel consumption works out. My 5 cyl is 4.0 cu in or 65cc and at near full throttle it consumes close to two ounces per minute. It's turning a 22 inch prop and I cant remember if its an 8 or a 10 pitch but its a stump puller, the Pinto weighs 22 lbs dry or 10 kilos and its a monoplane. As far as the 7-70 not being as powerful as a G62 that's no surprise as the G62 is a 2 stroke, apples and oranges.
    Doc
    Happy landings, Doc Hou Tx
    The second rule of modeling is there is no such thing as an insignificant savings in weight

  3. #253
    abufletcher's Avatar
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    RE: Seidel 7-70 radial: Help me decide!

    Mutti, Mutti, was is' for dinner? Tonight we're having Seidel in a 26cm (10.24") pot! Mmmm...lecker!
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  4. #254

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    RE: Seidel 7-70 radial: Help me decide!


    ORIGINAL: abufletcher

    OK. Here's ONE. Just to get you guys off my back! (More to follow, but hang on.)
    OK, but the Monkey is still there for the airplane this is going in
    congrats Don, that's a piece of artwork...........
    AMA 70865
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  5. #255

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    RE: Seidel 7-70 radial: Help me decide!

    Iron Chef special ingredient, SEIDEL!

  6. #256
    abufletcher's Avatar
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    RE: Seidel 7-70 radial: Help me decide!

    This is the first step on a long journey.

  7. #257

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    RE: Seidel 7-70 radial: Help me decide!

    Geez, what engine is that that you are talking about?

    Don. congrats. Its always nice to see someone's dream come true

    Yep we NEED a video and fuel consumption figures .
    BobH.

  8. #258

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    RE: Seidel 7-70 radial: Help me decide!


    ORIGINAL: abufletcher

    This is the first step on a long journey.

    That's probably a reference to the future home of the seidel, i.e his next 1/4 scale pup, strutter or other choice rotary engined A/C, whatever it is it will be a masterpiece.
    Congrats Don on your successful procurement, what a gem!

  9. #259
    Mein Duff's Avatar
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    RE: Seidel 7-70 radial: Help me decide!

    Geee this almost like having a new baby in the house with a bunch of jealous uncles...next come the teething issues...congrats...shes a beauty !!
    Fleet Brotherhood #5
    Half A Wing, Three Engines and A Prayer

  10. #260

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    RE: Seidel 7-70 radial: Help me decide!

    Don,
    so what's your evaluation so far?
    fit and finish appears great.............compression equal on all lungs?
    AMA 70865
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  11. #261

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    RE: Seidel 7-70 radial: Help me decide!

    If it fits in the pot, HE will build it.

  12. #262
    abufletcher's Avatar
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    RE: Seidel 7-70 radial: Help me decide!

    ORIGINAL: summerwind
    so what's your evaluation so far?
    So far? Um...it was heavy lifting it out of the box.

    ORIGINAL: Mein Duff
    Geee this almost like having a new baby in the house with a bunch of jealous uncles...
    And NONE of them are willing to change the diapers, when **** happens.

  13. #263

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    RE: Seidel 7-70 radial: Help me decide!

    nope, we'll tell you what screws to turn this way or that way until it breaks....then we'll all vacate, leaving you with a huge repair bill
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  14. #264
    abufletcher's Avatar
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    RE: Seidel 7-70 radial: Help me decide!

    ORIGINAL: summerwind
    nope, we'll tell you what screws to turn this way or that way until it breaks....then we'll all vacate, leaving you with a huge repair bill
    Actually, my very first question (to myself) was why there was a hex head machine screw on the tip of the shaft. I was hoping it wasn't like that story uncles tell kids about unscrewing their belly button and having the butt drop off! Well, it does come off, and doesn't seem to do anything. Maybe it's for spinners. Also it took me a few minutes to figure out how to remove the wire safety clip on the end of the shaft so that the nut can come off. It's really just a circle of wire and really hard to grab. It sits in a groove in the threads and the nut won't go past it until it's removed. I wonder if this can be replaced with a regular e-clip. The instructions are very specific about NEVER starting the engine without this clip in place.

  15. #265

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    RE: Seidel 7-70 radial: Help me decide!

    picture of it?

    yep, be sure to use a spinner on this engine regardless of plane design...............might as well get yer monies worth by using everything it comes with eh?

    seriously though, that's a nice touch that the screw is included.
    AMA 70865
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  16. #266
    Remklep's Avatar
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    RE: Seidel 7-70 radial: Help me decide!

    Thought you might enjoy a picture of my 7-70 with the rear ring-exhaust installed.
    Unfortunately for me I ordered from Mr. Seidel personally in May 2009, got the 7-70 in September 2009 and the ring-exhaust at the end of July 2010.
    I guess I was lucky I got the ring-exhaust at all now that his company is gone.

    Danny
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    Danny \"Remklep\" Busch - CORSAIR Brotherhood #40
    Real planes have bent wings and round engines!

  17. #267

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    RE: Seidel 7-70 radial: Help me decide!

    thank god Kelvin (Keleo creations) is alive and well................i used his exhaust and they are fabulous.

    http://www.keleo-creations.com/index...1d78237442c354
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  18. #268
    abufletcher's Avatar
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    RE: Seidel 7-70 radial: Help me decide!

    Danny, at least you go your collector ring in the end. I'm hoping to be able to run mine without. And if that doesn't work either I'll make us something myself or look into the Keleo options...but, wow, $225 for the ring!

    I had a fun time today showing the engine off to clubmates. Here's a fun photo showing the 770 with a Saito 56 which gives you an idea of the size of this beast...especially for a modeler like me whose fleet has mostly been of the 50-class.
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  19. #269
    leider's Avatar
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    RE: Seidel 7-70 radial: Help me decide!

    Don, glad to know you make your minde on the Seidel and are now enjoying it ! :-), I have a funny feeling that thanks to this motor a lot of people are going to find the motivation to build a stream of exiting planes, don't you think so.

    Daniel


  20. #270
    Mein Duff's Avatar
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    RE: Seidel 7-70 radial: Help me decide!

    I would bet that screw at the end of the drive shaft is for a spinner to be attached..I just ordered a Tru-Turn spinner and had to buy an adapter so that the spinner could be secured at the end fo the shaft.
    Fleet Brotherhood #5
    Half A Wing, Three Engines and A Prayer

  21. #271
    abufletcher's Avatar
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    RE: Seidel 7-70 radial: Help me decide!

    Here's the collector ring for the Seidel 770 now being offered by Keleo Creations:

    http://www.keleo-creations.com/index...roducts_id=208

    Looks like it slips right on (vs. the Seidel ring which requires you to disassemble the mount). Also I like the way the exhausts attach and also like the black color. But that's $225 MORE dollars (not including shipping).

  22. #272
    geezeraviation's Avatar
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    RE: Seidel 7-70 radial: Help me decide!

    You'll want one, dont decide till you've run the engine on a test rig, that'll help you make up your mind
    Doc
    Happy landings, Doc Hou Tx
    The second rule of modeling is there is no such thing as an insignificant savings in weight

  23. #273
    abufletcher's Avatar
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    RE: Seidel 7-70 radial: Help me decide!

    You're probably right. I remember that just after I bought my expensive Leica, there were suddenly a whole lot of "must-have" accessories for it!

  24. #274
    Spuetz's Avatar
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    RE: Seidel 7-70 radial: Help me decide!

    Hi Don,

    as for the collector ring: I made one myself for the Aero. Here is how:
    20 mm stainless steel tubing (4 quarter-rings)
    flex tubing (stainless)
    adapter tubing (7 to 8 mm) to fit the exhausts to the flex tubing

    With the spiraled flex tubing it is really easy both to build and to put on. just drill 8mm holes into the collector ring and then screw the flex tubing in one thread. Now hard solder..
    On the other side slip in the 8mm tubin (7 mm on the inside) and solder. Now you can fit it to the engine and hard solder to the exhaust manifolds.

    AH another tip: make the exit hole in the exhaust rather small - (i chose 8mm) this way the high frequencies get trapped and the low ones come out. Now you have a great sound! Not loud, but at least low...

    Here are some pictures
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  25. #275
    abufletcher's Avatar
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    RE: Seidel 7-70 radial: Help me decide!

    A year ago I would have been absolutely horrified at the prospect of doing something like that! But now I see it as just on the very horizon of what might be doable for me. It looks great.

    On the other hand, once I add together the cost of the stainless tubing, the flex tubing, and the hard solder rods (and all the aspirin for headaches) that $225 for the (aluminum) Keleo ring starts to look more and more appealing.


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