ORIGINAL: c-crunch
i have one of these and it can be picky. you need to run (0 nitro.) that meens no nitro, it will not run on any at all. ok now you need to turn the high speed out tell it transitions. that my be alot of turns. my maxiy almost seemed like the needal was going to fall out. the engine also likes a 18X10 wood prop. O and dont get to exsited about the power, it was made to fly big and slow. mine is in a 11 foot airplane that looks like a cub. it dose the job. c-crunch
Reviving an older thread here, but I have one of these engines with a Dell-Orto and I want to get it set right. Here's hoping c-crunch sees this and can contribute:
I started it for the first time the other day and it started just fine. Prime, backflip and it goes.
A few times it started backwards, but that seemed no problem. I just let it die and started it again.
I got it running and was seeing how well it transitioned when I heard a cracking sound. It turned out to be the Woodruff Key on the prop shaft. I've since located a replacement - an adventure in itself. I need to know more before I go back ouy and try to bumble around not really knowing what I'm doing.
My question is twofold:
1.- Which needle is the high speed needle, and which the low? What are good initial settings for them?
2.- What could have caused the backfire strong enough to pop the Woodruff Key?
I'm using PowerMaster fuel custom blended for me, 5% castor, 95% methanol, no nitro. Plug is a McCoy MC-4.
Thanks for whatever help you can provide.
BobbyG