Weedeater Engine Conversion
Well, naturally, I was there. I saw your planes. I remember well the Bobcat. I live on the other side of town. I was a spectator. I've been there every year since about 1989 or 90. Its the only one I go to. But I have never worked for Dick Shephard there. I've known him since back in the 60's when I would be flying control line out there and he would be flying R/C over on the sod runway.
I have a Homelite 30 that I bought as a new John Deere short block. It has all Carr parts on it. I have an identical 25 that was a weed whacker that I bought on sale at Quality Farm And Country. I have both because the electronic module on my 30 was defective and would cut out above 6000. I couldn't find another Walbro (For Sure) module at any of the chain saw dealers. So I stole one from my 25 weed whacker. I had to take it all apart to get the coil. So I just made an airplane engine out of it. I got a replacement Walbro coil from Daniels.
I did them in 1999. They are unmodified except for the carb. The carbs cost $40 They are 7/16" but they sure wake up the motor. I also have two McCullough 32's. They have 1/2" carbs on them that I got from Mark Daniel at Daniel's Hobbies in Berlin Heights. He gave me a good deal on them. He got them from Warehouse Hobbies.
I have another Homelite 30 that turns 1,000 rpm more than the others. There's not too much left of the original Homelite. It's called a Wolfe Predator. It has a 27/64 carb on it and CH synchro-spark ignition.
The McCullough's don't seem to have any more power than a Homelite 30. I also have a Ryobi that is bone stock. One of my McCullough's was hopped up a little by The guy on here from River ton Wyoming. It runs about 300 rpm better than the unmodified one.
If you get the carb insulator from an electric start Homelite, It mounts the carb at a different angle and the throttle arm is a straight pull back to the servo.
The Walbro mags are a lot hotter than the Phelons. The Zama carbs run about the same as the Walbro's.
There was another guy in Mansfield that had three 25's. He had the 7/16's carbs on two of them. He passed away last year this time with a sudden heart attack. He had one on a Venture 60 with the nose cut back. A picture of it is on the Venture web site. He had another on some kind off "Stick" airplane about the size of a Joss stick but that wasn't what it was. The third one was on a Dynaflite FlyBaby.
If I see your T-50 this year, I will look you up and we'll talk?
Enjoy,
Jim