Originally Posted by
bjr_93tz
I finally got around to putting my 200cdi into the Aries 07 and the weather cleared up enough to take it out to the field and put about a liter of fuel through it on the ground.
It was a bit cranky at first and I had to lean the regulator quite a bit (0.8mm out from flush). It got better and I quickly found a happy throttle position where it was revving free, belching smoke and generally leaving a big puddle of oil underneath. I've closed the break-in needle to 1/4 turn now and might take it up for a spin after another tank.
With regard to the prop slippage, apart from breaking-my-arm-off tight I've put a 0.7mm annealed aluminium washer between my new spinner back plate and prop driver to give them both something a bit softer to "bite" into. I've also pulled the spinner about 4 times now (after the initial start and during break-in) and nipped up the prop nut as the washer/spinner/propdriver settles in. Each time it has needed a bit of a nip up so something is gradually squishing into shape. Prop hasn't moved from it's initial marks, so far so good...
If it's running well, you are better off flying it rather than running on the ground.
Being soft, you'll most likely find the copper washer will keep squashing if you keep tightening it.