Rotax big bore kit

Rick E

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Joined
Feb 21, 2013
Messages
290
Location
Sydney, Australia
Aircraft
Cavalon and an MTO Sport
Total Flight Time
1980+
Just wondering if anyone has had any experience with the Edge Performance 140hp big bore kit for a Rotax 914?
 

wolfy

Active Member
Joined
Dec 19, 2013
Messages
347
Location
western australia
Thomas at edge offered me a real good price on a big bore kit while I was playing around with turbo's I never took him up so have no real world experience. But only the other day I was talking to someone about them and he said that the edge pistons were rumoured to be to short in the piston skirt allowing excessive movement in the bore and causing some problems. I can't remember whether he said it was already fixed or not.
I can't verify whether it is true or not.
Another option is rotax performance Australia, Steve would sort you out.

wolfy
 

wolfy

Active Member
Joined
Dec 19, 2013
Messages
347
Location
western australia
Rick, I can't verify if there is any truth to what I said above and I probably shouldn't have said it, so don't take it as gospel I don't want to start anything about edge.

wolfy
 

ventana7

Gold Member
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Dec 17, 2003
Messages
1,492
Location
Salida, Colorado
Aircraft
Xenon Gyroplane, Cessna 182
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960
I had it done on my Xenon which also has an aftermarket turbo. Only a dozen or so hours on it but so far satisfied. They rated it about 140 hp.

mine was done at South Mississippi light sport aircraft who have done a pretty good number of them.

The weakest link on a Rotax 912 is the pressed crank, so the Mississippi guys also weld the crank.

Rob
 

Rick E

Member
Joined
Feb 21, 2013
Messages
290
Location
Sydney, Australia
Aircraft
Cavalon and an MTO Sport
Total Flight Time
1980+
Thomas at edge offered me a real good price on a big bore kit while I was playing around with turbo's I never took him up so have no real world experience. But only the other day I was talking to someone about them and he said that the edge pistons were rumoured to be to short in the piston skirt allowing excessive movement in the bore and causing some problems. I can't remember whether he said it was already fixed or not.
I can't verify whether it is true or not.
Another option is rotax performance Australia, Steve would sort you out.

wolfy
Hi Wolfy,
Your right about the piston skirt, apparently the piston was modified after an engine failure in 2017. Full credit to Edge for acting responsibly.
Your also right about Steve P, he does beautiful work fitting aftermarket turbos on 912’s.
Cheers. Rick
 

wolfy

Active Member
Joined
Dec 19, 2013
Messages
347
Location
western australia
Cheers Rick I was just supplied a document confirming it all.
At least if you went with Steve and up the capacity via 912 uls pistons then you are still all rotax.

wolfy
 
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