BalsaBob

My Feedback: (24)

The manual recommends using muffler pressure to the fuel tank. The pressure fitting on muffler is not barbed ... it is smooth. Will tubing (to go to the tank) stay secured on this fitting ???

Thanks. Bob

the Wasp

My Feedback: (1)

post a pic so we can see it.

Jim

1200SportsterRider

Yes, I had both the 62 V and the 95 V, the pressure line stays right there.

BalsaBob

My Feedback: (24)

Okay, thanks. (but I'm still puzzled why it is not barbed ....like the fittings on the older engines).

Bob

1200SportsterRider

It would be difficult to remove that half of the mold with a barb. It would be real easy to hack that one off and install one like this.

BalsaBob

My Feedback: (24)

Good idea !

1967brutus

Why not?

I always use a sacrificial inch of fuel tubing for the connection to the muffler, so in case it burns away I do not end up with a shorter and shorter pressure line. I connect the sacrificial piece and the pressure line with a simple straight piece of 3 mm or 1/8" brass or alu tubing (whatever I have at hand). Never comes loose. The pressure is only around 50 mbar (0.7 psi) anyway, and that is nothing.

Jesse Open

Several people at our field using those OS mufflers. Seems some have had the libe slip off.
Easy enough to be more certain it does not. Daves suggestion to trim and tap for a standard, barb fitting is a tidy solution. I have also seen a wrap of .01 to .02" safety wire around the muffler body, then neatly twisted around the pressure line. Works well.
That loss of pressure can result in a badly timed flame-out otherwise.

BalsaBob

My Feedback: (24)

Wonder if a small amount of high temp automotive silicone would be enough to hold the tubing on ?

1967brutus

It should not be needed. But there are also small wire bent hose clips availlable suitable for standard silicone fuel line.

Jesse Open

Seems the folks at our field soon discovered those wire clips did little more than actually promoting the vent line to slip off.
Without the retention barbs the clips prove to be of little use. Probably better without them.

Other than that, very minor issue,those OS "V" series engines have become very popular at our field.