RCU Forums - View Single Post - air bubbles / fuel lines.....KILLIN' ME !!

04-18-2007 | 04:35 PM

#17

mtwister

Senior Member

Joined: Nov 2005

Posts: 703

Likes: 0

Received 0 Likes on 0 Posts

From: Salem , OR

RE: air bubbles / fuel lines.....KILLIN' ME !!

Jeff, I have come to realize that if that little block didn't pop out, then you'd probably rip that block, plus a former, or a firewall out with it, and have alot more damage. People scream and cry because they want light 3D planes (like me

) but when they have a less than perfect landing that pops out the gear, it is immediately blamed on the design of the plane. It is common practice, and knowledge, especially on the 30% and bigger planes, that if you know you're going to be rough on landings then you better strengthen up the stock gear supports. Look at the side notes that come with QQ, and Airwild planes.

Mike.

Quote:

ORIGINAL: JEFFRO503

Quote:

ORIGINAL: piroflip2

hi JEFF
none of my glow fuel motors suffer from bubbles in the fuel lines and will (if I let them) run fine untill the tanks are empty.
balance your prop, wrap your tank in a softer foam.
if you need a header tank for your engine to run properly there is something wrong with your set-up.

btw "little saito 125's " and "smaller glow fuel motor's",,,,,,,,,,,,,,,give me a break pal!!!!!!!!!!!

well............they are kind of small compared to what i've been flying anyways hehehe !!

I have a 35% WH sukoi coming and a BME 115 with a set of cans that are gettin' lonely and dying to be ran.

BUT......on the exceptionally large glow fuel motor's ( is that better ?

) i have a problem with them getting the air bubble only about every 7-8th flight....just enough to screw with my confindence that day. I'm going to look into those better clunks and also that little 2oz sub-tank a guy mentioned above....that's some good advice i can use.

As far as the damage goes......besides my funtanna 100X , there are two guy with the same plane also. We really wring these little sucker's out , and with the throws set on 40-50 degree's , the little sucker will just about flip inside a 8' raduis , over and over , and over.......pretty sweet!! The damage.........it just tore off the landing gear and that was it. the other two guys have had the same thing happen when they came in on a pretty hard landing.

Get this.....The 2" X 5-1/4" X 3/8th thick block for the landing gear...popped out really clean. And just like the other two guys said , it's only put in with CA , not epoxy........or the epoxy was put on extremely light. I didn't even get any wood splinter's between the two block. The block was in perfect shape and still attached the the landing gear , with no damage to the airplane , except for where the wheel pants went through the covering.

The other 2 guys said their's did the exact same thing.......i asked them why the heck didn't they mention this before? I would have slapped on some epoxy and saved myself a headache.HAHA!! Oh well.....thanks for all your advice guys...i'm looking into both the clunk and the little sub-tank idea's today , get er' all set up and tear it up again next weekend ( <<< figure of speech ).

Jeff

Reply Like