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There have been a few reports of upright engine installations on the
Challenger, but not much is said about them. Im not an expert on it, but after hearing all the talk back and forth on the subject it became clear that the problem is that the Challenger is not designed to handle an upright mount. The reason I see is that the thrust line for the air flow from the prop to the tail is built in for a engine down installtion and trying to raise the prop by using the larger redrive is more than likely the highest you can raise it and still have proper air flow over the tail. I know that drag is a big consideration, but like you I see other ULs with upright engines and wonder why the Challenger doesnt have one. It doesnt make much sense. It would require new tooling and design and maybe the factory cant afford it, to make the changes to update the current model, that is over fifteen years old? dave b. On 30 Oct 2000 04:31:41 GMT, jarunnles@aol.com (JARunnles) wrote: >Hi all I have a Challenger II that I have just put on a new 503 DCDI. I have a >problum. I have ordered the new tall redrive from the factory over two months >ago and have still not got it. Dave said that the place that makes the drives >is having trouble with there machines. What I would like to know have any of >you Challenger owners ever mounted your motor up right and used the Rotax gear >box? I have looked at the motor mount for the single place T-Bird and it looks >like it will work good on the Challenger. But I would like to talk to someone >that has mounted theres upright and see what it did to the handling in flight. >Thanks |
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