Greetings from London,

I am trying to use a Turbex 2 electric starter - it has a silicon rubber adapter which can be fitted to the starter two ways:
(a) open cup like side on the outside
(b) cup like side on the inside - leaving the small 1cm hole facing out

I am attempting to start a OS 70 Surpass with a wooden 12X6 prop attached. The prop is attached using a Great Planes aluminium safety prop nut.

My question: Which one of the following is the right way to use the starter

- orientation (a) ? in which case the rubber is pushed onto the wooden face of the prop. I have started the engine (once) like this but this has left marks on the face of the propeller and (worse still) caused the whole body to vibrate (the prop has also spun off once to my horror!)

-orientation (b) ? in which the prop nut is "squeezed" into the rubber 1cm opening and then the starter is switched on.

Sorry for the long winded mail - I am new to this and would like to provide as much information as possible

Thanks in advance for your help

-Arun