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Old 02-02-2003, 02:48 PM   #31
jmeyn
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Default Re: You know the saying ''If Harley made and airplane...

Harley weight and power are perfectly O.K. for this application which specifies 60-110 HP. The problem is that it's not tested that well in aircraft; I'd leave that to others.



In general, aircraft engines go for optimum economy and power performance over a narrow rpm band with low weight. No sudden revving and deceleration. The only reason I can think of for a Harley 88 is marketing, and possibly price (if Harley feels like subsidising this effort).
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Old 02-02-2003, 05:13 PM   #32
wfowade
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Default Re: You know the saying ''If Harley made and airplane...

Okay, the HD motor can make that kind of power. For brief periods. What happens to it when you run it 75% power for 1000 hours? My bet is that it will grenade by then and turn your little sport plane into a lawn dart.



The Rotax four stroke engine is a good choice An even better one.is a 115-125 HP Continental engine. That would make for a stellar climb rate. And get you home every time.
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Old 02-02-2003, 05:14 PM   #33
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Default Re: Peter Egan

I just want to know where the dealers are that sell HDs at MSRP or less. Around these parts, figure on at least a $2,000 additional profit margin.
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Old 02-02-2003, 06:01 PM   #34
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Default Re: You know the saying ''If Harley made and airplane...

All valid points (although 3600 PRM is far to fast for a directly driven prop). However, the basic design of a harley engine is not ideal; even for use in ultralights and such. Truth is, there are much better choices out there for these applications.
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Old 02-02-2003, 06:08 PM   #35
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Default Eeeeep...

If their website design is any indication of the quality of their product, well, I think I'll just stay on the ground where it's safe.



What's next? Air Norton? Air Ducati?



-B-
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Old 02-02-2003, 06:09 PM   #36
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Default Re: You know the saying ''If Harley made and airplane...

True. Per regulations all airplane engines must be able to run at 100% power "indefinetly". This is not a nock against Harley, but their 60 deg. twin simply isn't designed for this purpose.
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Old 02-02-2003, 06:10 PM   #37
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Default Re: You know the saying ''If Harley made and airplane...

They did, and to my knowledge, still make airplanes. I suspect that's why they were the first with a ram-air system on a sportbike.
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Old 02-02-2003, 06:23 PM   #38
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Default Re: You know the saying ''If Harley made and airplane...

I meant to include that they usually go at least 2000 hours at max RPM before inspection/overhaul. Many go more then 2000. All those hours occur under VERY difficult conditions. I'm not sure if there's an hour requirement though, even for manufactured planes. Just stay within gliding distance of a runway and you'll be fine
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Old 02-02-2003, 06:52 PM   #39
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Default While you were sleeping..

Yamaha debuted the '04 FJR1300, with ABS.



Here's the address.



http://www.yamaha-motor.com/products...cid=27&mid=180



On a side note, can someone please explain to me how to make a hyperlink in a post?
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Old 02-02-2003, 08:14 PM   #40
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Default Re: You know the saying ''If Harley made and airplane...

He just a coder. But he is not an engineer. Thats why he only programs business stuff. I have done it all real-time avionics, large-scale business systems integration etc.
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