I got my new MT header today. I took some pictures of it, it is slightly unique. The header pipe is a flex, but not the type that I've seen in RC before, more like a flex straw, no ugly leak in your cowl. I like that it comes off at about a 30* angle down and it hugs the engine quit closely. It's thin wall stainless, Larry said when used with his canister you don't need a coupler. I'm going to put it on my 17 pound WACO bipe with a MT57 I took out of my 22 pound Yak.

kewl

No coupler makes a bit harder to tune doesn't it?

Also doesn't no coupler mean metal on metal - not the best solution there.. first time one comes loose especially on an 72 Mhz system that baby is going in.

That's what I thought too. I know Tommy flies RC, but I don't know if he has a lot of experience. I personally am going to use a coupler. Larry just mentioned that the ran test with it without a coupler, something like 8 or 40 hours, I forget exactly, I just remember thinking that that was a long time, and that my DA header from TBM with the flex would really be yucky.

The one header bolt looks like it will be a bear to get on, thankfully you only have to do it once. I report how that works out.

Well the picture I saw of his mounted canister had the canister pressing against the wooden tunnel.. not exactly how I would do it.. the vibration will cause issues over time.

Be interesting to see what happens... I don't even like metal on metal in 2.4 it's not foolproof by any means.

even thought u r still breaking in what knd of power or rpms are you seeing (prop brand also?

Anyone measured up the header, to see what other engines it might fit for testing?

I don't know if you would get your hands on one unless you bought a 57. There is someone else out there who bought from another dealer and he can't get an answer if he can buy one. So far it's being used as a tool to fuel sales.

It does look interesting, might be nice if others could get their hands on one if they wanted to use it on other engines as well.

It looks like it will work on my Brilleli 366GT, MT 62, MT57, MT50, DL 50, I don't have a DA or a TOC 53, but if it fits the DL it should fit the DA. It's too large to fit my MT42. I've used DA headers in the past on MTs by drilling them out a 1/16", I would think that would do it going the other way too.[sm=thumbup.gif]

Larry got his first shipment in of them, after any MT owners have all had a chance, he'll sell them to anyone I would think, but Rudy's right it's icing on the cake for buying MT.

That fancy flex pipe will last maybe 4 hours. I used it for 4 cycle glow before going gas. It doesn't stand up to vibration, it is a flexible conduit sweep, and also used for low pressure LPG connections. As I said it lasts about 4 hours then a new piece needs to be installed. There's a reason everyone else's flex header pipe looks like it does. It works.
But AI sells it by the foot plus the braising rod so you'll be able to repair your header when needed, as long as they didn't make it from some oddball size SS tubing.

How would you be able to adjust the length of header?wouldn't it just be easier to get a DIY header kit and make your own up.that way the pipe is exactly where you want it and you can make it any length you need,and it will out last the plane.

If you can braze up your own custum header, you won't need this, but most guys will probably chose this route. As for how long it last, I'm putting it on my plane and I'll find out, I just reported what I was told.

Not so, it is made of fine grade SS not cheap material like lp gas line flex pipe. You talk about it but you really do not have the material to compare. Also they are dis simular metal with different exspansion rate so when heated the joint tightens so it should not cause a problem with radio. If it should we are prepaired to supply teflon couplers. How about that JAKE.

Larry LS PRO ENGINES

Larry you are too funny. That's great and all.. I was just statig my opinion on metal on metal. Why reinvent the wheel.. a coupler has worked for a long time and makes it easy to adjust length. You also need to think about the clamp that is being used... if the metal is expanding and contracting with the heat what about the clamp?

Your customers will be bending the header to wrap around the cylinder to align the exhaust with the muffler. Once it is bent that much it's ability to flex is compromised. The bent part becomes much more rigid than the straight section and all vibrating forces will concentrate where the bend ends and crack apart. The stuff is called ridgid flex conduit. The "ridgid" part should indicate it's not supposed to be used in a moving/flexing environment. Now if you had designed it to have a flexible coupler on both ends of the bendable section there shouldn't be near as much chance for failure.
Has this been tested with many hours of actual flight time in various applications and with many kinks and bends as your customers will be expected to try?
Or are you just expecting your stooges to fob it off on an unsuspecting public as the next greatest thing since sliced bread?

I'm so glad I shared the pictures of my header that I bought.

It does follow suit thus far with their reputation Rich.

Unfortunately this is not a surprise.

Rich, thanks for the pictures and info on the header.

If the engine is rotated to the 8 o'clock position (looking aft from the front of the plane) the header will shoot straight back into the pipe tunnel. In a Yak or other round-cowl plane you won't even care. It would likely make a mess of a small, tight Extra/Edge cowl in a 50cc plane.

We have a pair of planes with a ZDZ 80 on cannisters using this configuration. BTW, neither have a silicone connector although both headers have a stainless steel flex section.

.

Hey Rich, which one of the STOOGES are you??????? If they ony knew!!!!! Maybe you are a Puppet and I pull the strings Rich.

Hey Jake, you cant fault us for trying . Say what you may but we are trying to make it easy and give the guys something new and easy, thats more than most do. Sooner or later we will get it right. [For most people anyway]

Larry LS PRO ENGINES

Oh darn Rich, you did not say that you bought and paid for it. Now you can say if its good or bad. If I gave it to you , you would have to say good things !!! Screwed up again!!!! "STOOGE"

Larry LS PR ENGINES

I came across this thread almost by accident, so I thought I’d take a look.
Now, I’m no gas engine expert, in fact I’ve never owned one.
That’s why I was looking in the Gas engine forum because I want to learn.
I’ve had a good look at the photo of the flange and to be honest it looks like total rubbish to me. Any one else notice this.
The opening into the header looks like it was carved with a chain saw and if the quality of the rest of the unit is similar I wouldn’t touch it.
I have no intention to offend anyone but I have to say it as I see it.

BOY! does this thread bring out the best in everyone.

No offence taken.

Look at the other picture of the flange, you see it's cut out very nicely, the roughness you're seeing is where they weld the tubing to the flange, then grind the weld flat. I guess the could have ground the inside to look real nice, but I don't think there's any HP there.