Hi ,

I started to try and break-in my Ro-Jett .40 BSE RE and when I try to start it (back flipping) , the prop nut loosens on the smallest of pops (back fires) ?
I'm using the Master Airscrew 8X6 as reccomended by the manufacturer and just a prop , no spinner . The prop driver seems to slip as the engine tries to start .
It's a sake of safety , for sure .
The motor is brand new .
Any suggestions ?

Thanks ,

Rob Killick

Hi Rob,  just read this post about your RO-Jett 40.  When I got mine from Richard Oliver I had quite a discussion about it.  Was told to run the engine a little on rich side for first runs.  Mine is the bar stock rear exhaust 40 with the mini pipe muffler.  The fuel I am using now is the Power Master all synthetic 15% nitro with 22% oil.  The prop is the Windsor 11.5 X 4.5 prop.  It is in an over weight Brodak Accentor flying on .015 X 65 fot cable.  I have yet to have the prop come loose.  I have had to pull plug when I got it flooded a couple of times.  Most of the times it is two or three flip start.  Reread my instructions and see no where as to breaking in with 8 inch prop.  In fact Richard told me to put it in the plane and fly.  Have fun,  DOC Holliday