28 Nov 2025, 11:15 [ UTC - 5; DST ]
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Post subject: Re: Rotax failure  Posted: 21 Mar 2017, 19:53 |
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Joined: 01/31/10
Posts: 13631
Post Likes: +7766
Company: 320 Fam
Aircraft: 58TC
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Username Protected wrote: I literally watched the failure occur. Going from 3000 RPM to sudden stoppage definitely cause a torque vector enough to bend the motor mount. Wow. That's high for taxi. What is takeoff rpm for a Rotax?
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My 58TC https://tinyurl.com/mry9f8f6
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Post subject: Re: Rotax failure Posted: 21 Mar 2017, 20:20 |
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Joined: 09/04/09
Posts: 6203
Post Likes: +2739
Location: Doylestown, PA (KDYL)
Aircraft: 1979 Baron 58P
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Username Protected wrote: I literally watched the failure occur. Going from 3000 RPM to sudden stoppage definitely cause a torque vector enough to bend the motor mount. Wow. That's high for taxi. What is takeoff rpm for a Rotax?
If my foggy memory is right it's about 7k
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Rick Witt
Doylestown, PA
& Destin, FL
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Post subject: Re: Rotax failure Posted: 21 Mar 2017, 21:00 |
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Joined: 01/30/15
Posts: 1552
Post Likes: +674
Location: Dalton, Ga. KDNN
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Username Protected wrote: I literally watched the failure occur. Going from 3000 RPM to sudden stoppage definitely cause a torque vector enough to bend the motor mount. Wow. That's high for taxi. What is takeoff rpm for a Rotax?
Around 5,500-5,700
I cruise at 5,000
Idle needs to be 2,000 or a touch more to keep the slop out of the gearbox.
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Mooney Bravo & Just Superstol
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Post subject: Re: Rotax failure Posted: 21 Mar 2017, 21:01 |
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Joined: 05/05/09
Posts: 5310
Post Likes: +5298
Aircraft: C501, R66, A36
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Idles around 2500-3000 and cruises at 5000, takeoff is 5800.
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Post subject: Re: Rotax failure Posted: 21 Mar 2017, 21:17 |
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Joined: 10/05/11
Posts: 10282
Post Likes: +7358
Company: Hausch LLC, rep. Power/mation
Location: Milwaukee, WI (KMKE)
Aircraft: 1963 Debonair B33
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Username Protected wrote: I seriously contemplated putting one on my Kitfox (still unfinished, sorry!) but went a completely different way with a Rotec radial. Pics! Those are cool little engines. Has it been reliable?
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Be Nice
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Post subject: Re: Rotax failure Posted: 21 Mar 2017, 21:54 |
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Joined: 08/26/15
Posts: 10040
Post Likes: +10039
Company: airlines (*CRJ,A320)
Location: Florida panhandle
Aircraft: Travel Air,T-6B,etc*
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Username Protected wrote: I seriously contemplated putting one on my Kitfox (still unfinished, sorry!) but went a completely different way with a Rotec radial. Pics! Those are cool little engines. Has it been reliable?
Sorry to disappoint- I haven't even run it yet... still lots of work to do on the project.
Here is a picture from a few years ago. (I put the prop on there only for the photo.) I haven't had much opportunity to work on it in a while, but those circumstances aren't permanent. One day, hopefully not too long...
Attachment: 287101_10151368396256102_81206163_o.jpg
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Post subject: Re: Rotax failure Posted: 21 Mar 2017, 22:14 |
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Joined: 05/05/09
Posts: 5310
Post Likes: +5298
Aircraft: C501, R66, A36
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Pics! Those are cool little engines. Has it been reliable?[/quote] Sorry to disappoint- I haven't even run it yet... still lots of work to do on the project. Here is a picture from a few years ago. (I put the prop on there only for the photo.) I haven't had much opportunity to work on it in a while, but those circumstances aren't permanent. One day, hopefully not too long... Attachment: 287101_10151368396256102_81206163_o.jpg [/quote] The Rotec not the Rotax is a terrible engine. Remove it immediately.
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