HEADER COULPER

[Dennis C]

As you can see in the picture below, i instaled a header & can in my plane. The only way for me to line up the header and can was to use the flexiable tubing because it didn't put a bind on the mount for the cannister.

My question is there any other high temp material available to use that is somewhat flexiable, i have some of the white tubing that you can buy from Desert aircraft and it just isn't flexiable enough and i cant really get a straight shot from the header to the cannister like i would like.

Im sure the flexiable tubing will work for awhile but it's hard to get it to make a firm grip on the can & header so i think the cannister will start turning after awhile.

[ConRadical]

ah.. yes, that 80 and the header. I had the same problem with mine. Used the "white tubing" on mine. Forced it and made it work. After it heats up and runs awhile it'll kinda form and shape.

[skyesdad]

Dennis that looks sweet man

[Dennis C]

Thanks Mark,,can you believe it ....another wildhare in texas

[Toro]

Dennis,

go to the hardware store, and purchase some white teflon pipe tape. Wrap that baby a bunch to seal it, and perhaps throw the pipe clamps over the top of it to keep it from unravelling. That stuff WILL NOT melt, and provides excellent sealing properties @ high temps... You can also drill right into the can neck, and header to put some stopper bolts in it to prevent it from doing this. I have done this a couple of times to prevent my teflon header couplers from slipping withou effecting the performance.

T

[KrisW]

On my single cylinder setups with canisters, I merely use a small door-return spring, attached around the stinger on the canister with a wire, then hooked to one of the bolt holes in the cooling fins of the engine, to provide tension and prevent the canister from sliding backwards. If it can't move backwards, the amount of tightening necessary on the coupler is reduced, and you don't have to be as critical in that area to prevent things from coming loose.

As for keeping the canister from twisting. . again, small springs on each side, attached to the fuselage, will keep the stinger from rotating, and also provide support. It's best to have a rub block at the top of the tunnel, made out of silicone, and pull the canister up against the rub block witht he springs. This way you not only prevent fore-aft and rotational movement, but you also keep the canister from bouncing up and down and straining the header and flange.

the canisters sold for the ZDZ's have that nice "pin" on the back that easily mounts in a hole to keep the back of the canister in place. Three small springs, and a rub block, is all that is necessary to finish the installation and keep everythign from moving around.

BTW .. on the flex coupler. After 4-5 flights the seams of the coupler will fill with carbon a bit, effectively sealing it and preventing exhaust soot from blowing out. A single wrap of teflon tape is sufficient to totally seal the flex section during this period. Once the carbon fills the voids and seams, it will never leak again.

BTW .Teflon tape WILL melt, but only at temperatures much higher than our exhaust see on the outside of the pipes. Believe me, you WILL know if it melts .. the smell is horrendous!!!!

[Dennis C]

Thanks for the input & good tips guy's...i wasn't sure if the flex pipe would work or not.

[SleepyC]

Dennis, is that the extra 260 or edge 540?

I reciently got the 260 with a ZDZ80 Blue head... MAN what a plane.
I love it... it flys AMAZING! Almost NO mixing requiered to get perfect KE.
I have a CF wing tube and Main Gear, 2 - fromeco 2400's and regs, 1 - 6V NIMH on ign, 5945's all around and an 8611a on the rudder...Plane weighs 23.1 lbs.. and MAN what a floater!

Let me know how the can works out for you... thats one mod I was considering doing over the winter!

I am really impressed with this WH plane!

[Kiwi]

Guys,

A simple word of warning regarding that Teflon tape. As Toro says its great stuff and wont melt at our exhaust temps but it does burn.

That horrible smell Kris is referring too is what will invite us all to your funeral however. Unless they have changed the formula PTFE tape will downright kill you if you ingest the fumes.

DONT DO IT. They might have changed the mix to make it safer but I dont know that for sure so always take to easy path. Dont burn it, and dont sniff it.

Kiwi

[Dennis C]

	Quote: Originally Posted by SleepyC
	Dennis, is that the extra 260 or edge 540? I reciently got the 260 with a ZDZ80 Blue head... MAN what a plane. I love it... it flys AMAZING! Almost NO mixing requiered to get perfect KE. I have a CF wing tube and Main Gear, 2 - fromeco 2400's and regs, 1 - 6V NIMH on ign, 5945's all around and an 8611a on the rudder...Plane weighs 23.1 lbs.. and MAN what a floater! Let me know how the can works out for you... thats one mod I was considering doing over the winter! I am really impressed with this WH plane!

Yep the 260. i'll post some pictures later tonight when i get home from work of the tunnel i made for it.

[skyesdad]

yep dennis who woulda thunk it . that looks sweet hmmm.. maybe a phone call to tom is in order also look on jegs for some thermo tec header wrap we use it on headers and it should seal it up and not be toxic as a bonus it will hold heat IN.