Is there any Draw back to .....

[Terry Bolin]

 ::)Is there any Draw back to using a plastic klunk tank over a metal stunt tank?
Thanks, Terry B.

[Dan McEntee]

     The only draw back that I have ever encountered, is that if the model sits for an extended period, they sometimes split at the seems. I guess the fuel gets to the plastic and causes that. I just make it a habit of checking the tank before I fly a stored model. It's another good reason to always make your tank compartment fuel proof and easily accessable. The good part of this is to replace it, just purchase the proper tank, take the old plumbing and put it in the new tank. The material that Sullivan is making their stppers out of lives a fairly long time and allows this.
    I use the plastic tanks frequently, on bothe built up and profile airplanes.
  Type at you later,
  Dan McEntee

[Scott Jenkins]

Hi all,
The only drawback (performance wise they are OK) to using a plastic tank is that they are "BUTT UGLY"  and the usual mounting system is rubber bands which get fuel soaked and give up at the worst time.   Now if some one has a better mounting system for a plastic tank that does not add a bunch of extra weight to a profile. Lets see it !    Plus, I just like the looks of a well made metal tank. 

Scott

[Bob Reeves]

I am slowly making the transition to mostly plastic even on profiles. Need to take a picture of the tank mount on my Ringmaster, about as simple as you can get and no rubber bands. Slotted the fuselage and ran wire-ties all the way through and around the fuselage.

While on the subject, I am tending to get away from going to the trouble of uniflow plumbing. Although it does give you an easy way to adjust the tank height. I have found conventional plumbing with muffler pressure only gives me about a .2 to .3 second speed up during the flight which isn't all bad as it gives me a little extra oomph for the overheads and clover.

Hey Bobby, good to see you posting and sharing your vast knowledge and experience. Almost makes me wished I still lived on the east coast 

[Jack R. Dock]

Hey Terry  -- Sounds like the plastic tanks are ok.   Just a bit of information that I have learned, instead of using rubber bands to hold the tank in place try using fuel line tubing cut to the right length and joined with a piece of brass tubing about a 1/2" long.  Bever have to replace it !!!

Keep the shiny side up -- Jack

[Jack R. Dock]

Should have said "never" have to replace it -- not sure how the bever got there .

Jack

[bob branch]

I have not done it on a stunter yet, but I secure al lmy rc plastic tanks whether in a builtup fuse or on a profile with zip ties. No fuel issue at all.


bob branch