Walter,
I'm using the original heavy case 61 with the 110/130 timing. The early 61's seem to be much smoother runing probably due to the heavier case. Both the LT and the LS use the lighter case and are just about an ounce lighter.
Alan
I still fly my old heavy case 61 RE with the blue head (anodizing was not good in 97). I put a couple head shims in it, put on a bigger venturi gutted the old baffle muffler, and ran some nitro after the second Nats I flew it in. So now it drank two more oz of fuel like a big Tigre, made more power but the nose heavy condition exacerbated wind up and wind performance. At the time, get a bigger engine made sense, thus I piped in. Three Nats and a team trials, the only internal change was clean up ports, and the con rod from the 55RE. Crud had to be cleaned from the head occassionally when I tried to turn it into a castor blaster. Of course, mine hauls around a 63 oz 11 year old pig. Therefore it is a handful in the wind.
Good luck with your bird! Can we have some particulars on this particular Fire Cracker?
I know the Stalker engines I have, had more potential than the airplane I designed for it originally. In hind sight, I probably should have stuck with the engine, and slimmed down my design.
Slick lookin ship!
