goirish

Tried to fly my cub inverted 2' below the ground. Didn't work. I broke a piece off of the gas engine. I have it marked in the photo with a dowel. The blue fuel line attaches to that at the engine. Is that a replaceable part?

RCKen

My Feedback: (9)

Gene,

goirish

rcgf 26

RCKen

My Feedback: (9)

http://www.gravesrc.com/category_s/810.htm

goirish

Do you know how if comes out of the engine?

RCKen

My Feedback: (9)

I've never tried to get it out. But since it's a plastic part in the crankcase of the engine it's got to come out somehow. If nothing else you could simply drill the old one out. I just don't know if the those parts are available separately right now

perreback

Below the ground? Yes, that can be tricky.

opjose

That's a plain old "pulse port".

At worst you can break out the plastic with a pick or something.

First remove the carb and mount.... being careful not to damage the gaskets ( you may need to replace them ).

Remove the back of the engine.

Then try to pry or screw out the plastic.

If you damage the threads you could always retap the hole and install a brass nipple instead.

Make sure you leave no metal or plastic shards in the engine... flush it out after you are done.

Re-assemble and check the piston rod too.

goirish

took the plastic piece off with a pair of pliers. It looks like it was a pressed on fitting. It has a copper tube coming out of the engine less than 1/8' I can post pictures of that if it is helpful.

opjose

You may be able to find a replacement as a carburator part.

Otherwise tap a new fitting in.

goirish

wonder if I could use something like a muffler pressure nipple.

opjose

Absolutely... that's what I had in mind.

Tap the hole to a standard size used for muffler nipples and you're all set.

Make sure you use loc-tite and the assembly will be as good or better than new.