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  #1  
Old 09-08-2014, 05:08 PM
hthaman hthaman is offline
 
Join Date: Jan 2014
Location: IA
Posts: 56
Default Rotax on engine stand question

Can someone advice if thats "ok" or not to keep the new engine for few days on a stand like in the picture please.

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  #2  
Old 09-08-2014, 05:40 PM
Mike H Mike H is offline
 
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It will be just fine.
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  #3  
Old 09-08-2014, 07:44 PM
roger lee roger lee is offline
 
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Location: Tucson, AZ
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Default

I don't think in 15 years I have ever seen or heard of this being done.

Personally I don't think that is the best solution. The engine has more than enough mass to tweak that prop flange and I'm not sure what it may do to the shaft oil seal. I see you still have the metal crate plates on the bottom. Why not just set it on those or two blocks of parallel wood?

The prop shaft and new bearings and seals will cost about $750 just for the parts not including labor. There is some oil still left in the engine, not much, but no sure where it's going to go.
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  #4  
Old 09-08-2014, 10:12 PM
roger lee roger lee is offline
 
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I would like to post this picture on the Rotax website and get some comments if you don't have any objections?
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  #5  
Old 09-09-2014, 06:21 AM
hthaman hthaman is offline
 
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no please "go ahead", I would appreciate that. thanks much.
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  #6  
Old 09-09-2014, 06:45 PM
hthaman hthaman is offline
 
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found another thread below, 07 built and guy said stand like in this pic is in the rotax manual.

http://www.pipistrelbuilders.com/rot...fications.html


I spoke with rotax tech at leading edge air foils, he said should be fine but rotax tech at lockwood aviation said the crank shaft should be checked for bent.





is there any testing can be done during the engine run at final that can make sure all is well inside it ??
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  #7  
Old 09-09-2014, 07:13 PM
RFSchaller RFSchaller is offline
 
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Location: Phoenix, AZ
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I just left the shipping angles on and set it on the work table. Worked great.
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  #8  
Old 09-09-2014, 07:25 PM
roger lee roger lee is offline
 
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I sent it to US Rotax main distributor. I'm awaiting a comment.
I just wouldn't treat my $18K engine this way. Just tweak the shaft or prop flange ever so slightly and it's vibration city and a new shaft, oil seal and bearing is in your future.

I think if Rotax thought this was okay some where in a class, the crate or the factory they would do it, but they don't.
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Last edited by roger lee : 09-09-2014 at 07:31 PM.
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  #9  
Old 09-09-2014, 07:29 PM
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KALEWIS KALEWIS is offline
 
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Location: Jackson, OH
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I'm not sure why anyone would attempt hanging or standing the engine from the prop flange. Seems way to risky to bend something. We left the shipping rails on the bottom and did everything required on a flat workbench.
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  #10  
Old 09-10-2014, 04:07 AM
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Dgamble Dgamble is offline
 
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Standing on the flange like that is how traditional engines like Lycomings are worked on. It was certainly my experience at A&P school.

They're obviously subjected to large loads in excess of their own weight fore and aft in standard and pusher configurations while flying, so it seems logical that sitting on a stand in the same orientation would be okay.

I'm not sure how or if the Rotax gearbox changes that equation, though.

http://www.alaskanaircraftengines.co...e-removal.html
http://jeffsplanes.com/Cub/engine.jpg
http://jeffsplanes.com/Engines/IMG_7093.JPG
http://rilinterface.com/Traveler/Ima...e/PIC-0049.jpg
http://www.berkut13.com/engine04.jpg
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