Hi Peter;
A couple of years ago, this subject came up in the 1/2A section. There was a guy that produced a venturi/adapter but I think he passed away. In one of the threads it was noted that he used the Cox TD-.049 venturi and spray bar set up. i got to looking into making something myself, and discovered that regular 1/4" brass tubing from K&S has an ID that is just right to run a 1/4"-32 trap into it and that is the threads that is on the bottom of the Cox TD venturi. I tapped the tubbing, cut it to length and JB-Welded it into the crank case of the Wasp engine and the venturi assembly attaches now just like the it does on the TD.049. Do a search on the 1/2A section using the Wasp .049 as a criteria and see what pops up. I haven't run mine yet, but others report that using the old adapter worked well and there may be other ways to mount something I don't remember. In talking with Jim Hoffman , he just locks the throttle in a certain position and flies them that way. This gives you the advantage of closing off the throat opening as desired if needed to get the run you want.
Type at you later,
Dan McEntee
Topic: WTB venturi and needle valve (Read 2403 times)