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Posted

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.

 

 

  • Informative 1
Posted
Most VG I have seen didnt need any spacers and they had bolly props

With the spinner aswell?

 

 

Posted
Call bolly, I think they do some extensions.

I called bolly they directed me to aerokits which dont have any.

 

 

Posted
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

 

image.jpeg.5b9f0d7e938e6bac380bd69dadbc3c62.jpeg

 

 

Posted
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

 

 

Posted
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

 

 

Posted

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

 

 

Posted
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

 

 

Posted

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!

 

 

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