In my boneyard, found our old GLH that we used in the late 70's to testout the TD's performance after I reseated the ball. Since we raced pylon,and the planes were all the same, it really depended on the engine and prop. Prop was a 5D-3P and so after each weekend race, every time meant taking it apart, re-seat it and then flight check. And it really would
Go
Like
H--l. More than once, I had to dis-assemble and redo..
My son got a Christmas gift from Cox/Sanwa which included a 6 channel radio and 3 TD 049's since he was an excellant pilot who won a lot of races.
Not bad for sitting around for about 40 years.
Will run it this spring.