Trackley Posted March 7, 2017 Share Posted March 7, 2017 Hi guys im at a road block with my brand new Bolly prop, does anyone know of a extension that can be bolted onto a rotax 912 uls prop thrust plate to extend out another inch or so, so i can have adequate clearance of the spinner backing plate of my new Bolly prop and spinner. 1 Link to comment Share on other sites More sharing options...
Skee Posted March 7, 2017 Share Posted March 7, 2017 FLASH | ROTAX spacer DUC Hélices Link to comment Share on other sites More sharing options...
Kyle Communications Posted March 7, 2017 Share Posted March 7, 2017 Most VG I have seen didnt need any spacers and they had bolly props Link to comment Share on other sites More sharing options...
rick morawski Posted March 7, 2017 Share Posted March 7, 2017 Call bolly, I think they do some extensions. Link to comment Share on other sites More sharing options...
Blueadventures Posted March 7, 2017 Share Posted March 7, 2017 FLASH | ROTAX spacer DUC Hélices You may find that the three drive pins on the spacer will not match the bolly prop blade hub. Not saying it won't as I don't know for sure; just check the fit up and the images of the hub in the broucher. Regards Mike Link to comment Share on other sites More sharing options...
Trackley Posted March 7, 2017 Author Share Posted March 7, 2017 Most VG I have seen didnt need any spacers and they had bolly props With the spinner aswell? Link to comment Share on other sites More sharing options...
Trackley Posted March 7, 2017 Author Share Posted March 7, 2017 Call bolly, I think they do some extensions. I called bolly they directed me to aerokits which dont have any. Link to comment Share on other sites More sharing options...
corvairkr Posted March 7, 2017 Share Posted March 7, 2017 Hi guys im at a road block with my brand new Bolly prop, does anyone know of a extension that can be bolted onto a rotax 912 uls prop thrust plate to extend out another inch or so, so i can have adequate clearance of the spinner backing plate of my new Bolly prop and spinner. Try Tecnam Mate..... a mate recently had the same problem and we sourced a spacer from them.Not cheap through :/ Jason Link to comment Share on other sites More sharing options...
Kyle Communications Posted March 7, 2017 Share Posted March 7, 2017 With the spinner aswell? The big bolly spinner is used with the prop extension for the XL and the S I believe these is a much smaller spinner that is available though and I think that will give you your clearance Link to comment Share on other sites More sharing options...
dan tonner Posted March 7, 2017 Share Posted March 7, 2017 Hi guys im at a road block with my brand new Bolly prop, does anyone know of a extension that can be bolted onto a rotax 912 uls prop thrust plate to extend out another inch or so, so i can have adequate clearance of the spinner backing plate of my new Bolly prop and spinner. Rotax advises a maximum spinner extension length beyond the engine thrust plate that is about the length of the stock Savannah extension. I don't know why or how this limit was determined, but it may be something you want to investigate before adding any additional length to the existing extension. Just my thoughts. All the best; fly safely, Canada Dan Link to comment Share on other sites More sharing options...
Kyle Communications Posted March 7, 2017 Share Posted March 7, 2017 Travis has the std VG version Dan not a XL or S it doesnt have a prop extension like we have on it Link to comment Share on other sites More sharing options...
Trackley Posted March 11, 2017 Author Share Posted March 11, 2017 Ok so called rotax spoke with Gary. The clearence i have is about 2mm on the right side of the cowl. Gary said that should not be a problem. I have just run the engine today with the spinner on with no problems. But boy talk about fine tolerances Link to comment Share on other sites More sharing options...
Ultralights Posted March 11, 2017 Share Posted March 11, 2017 this is my spinner and cowling clearance. Link to comment Share on other sites More sharing options...
Kenny Posted March 11, 2017 Share Posted March 11, 2017 this is my spinner and cowling clearance. Hi I had a similar problem some time ago and had to cut the flange off of the back of the backing plate, about 3 or 4 mm from memory, it worked anyway although it was still a close fit Cheers Ken Link to comment Share on other sites More sharing options...
derekliston Posted March 11, 2017 Share Posted March 11, 2017 I had the same problem with my new Jabiru composite prop and spinner which I believe is actually Boly? I reversed the spinner backplate, re drilled the spinner and cut a bit from the base of it. Had to cut clearance slots for the back of the prop in the spinner plate but it all worked well! Link to comment Share on other sites More sharing options...
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