Pressure nipple on a pipe...

Is here a way I can put a pressure nipple on a pipe?

Len?

Copper tubing and JB weld. I think it should be post-baffle.

AK

I know that I have bought such a nipple (for the thin tube in a pipe) at the local hobby shop--sorry but I don't recall the manufacturer. It has a flange on the part that is inside the pipe, and a nut on the outside to tighten it down. Only tricky thing is getting it inserted from inside the pipe.

>I know that I have bought such a nipple (for the thin tube
>in a pipe) at the local hobby shop--sorry but I don't recall
>the manufacturer. It has a flange on the part that is inside
>the pipe, and a nut on the outside to tighten it down. Only
>tricky thing is getting it inserted from inside the pipe.
>
>Alan

Hi Alan,

When I ran R/C race boats with my Dad We had to put a bolt on pressure fitting on all the tuned pipes and its real easy

after you drill your hole i the pipe all you do is take a thin piece of wire that will fit threw the hole in the fitting and feeding it threw the outer hole. Now feed it into the hole until it comes out the neck of the pipe, then put the wire threw the nut, stop here for a second and now tape the excess wire some where on the pipe (you'll see why after dropping the nut a few times) anyway then feed the other end of wire that is sticking out at the entrance threw the outer fitting part, now tape that side also but leave a long enough piece hanging. Then remove the tape from the neck side and tie a bunch of knots in that end, the knots need to be big enough so that it will not pull out form the inside and the nut. Now pull the entrance side until the knot goes into the pipe and stops you from pulling it threw, now carefully slip the outer fitting into the hole and start to tighten it up, trust me again because it will tighten up, now to remove the wire just back it into the pipe as if you were at the beginning step and walla, its as simple as pie your done. B.T.W. it takes less time to do it than it did to write this with one finger.
TRUST ME !!!!!

The original Swith/Werwage pipes came with or with out a pressure nipple. As Alan said, they were soft brass (maybe copper ??) tubing put in with JB Weld. These were inserted and a very "flat" angle on the neck of the pipe just before the point where the pipe expands to it's full diameter.
Funny, we were "out" of stunt for five years and when we came back, there was no pipe pressure tube on any of the new pipes. (??)
Bill Little <><

I have a Smith/Werwage pipe set up that’s about 9 years old that I ran in my OS46VF. The pressure tap is 1/8 Aluminum and is 4" before the first baffle. It looks like it installed with JB Weld.

Most of the pipes we currently use on the lower timed engines have very little backpressure, so "pipe pressure" is little more than having the breather in a controlled enviornment.

I have my vent inside the nose, above the crankcase so that it's end is higher than the tank so it doesn't siphon. Gives me the same effect.

The earlier pipes like those we used on VF46's did generate some pressure.