Only the problem with having the tube in the middle of the header is that you cant take all the fuel out it, therefore i use a clunk in the header.

With a properly set up main tank you shouldn't get much air going thru anyway so more often than not the header is full right up until the main empties. The header is just there to cope with those one off situations eg a snap roll, right at the end of the flight when the fuel level is more critical.

Also, the size of the header should be kept to a minimum. If you have a large header you effectively end up with two main tanks and dont end up solving any probs with air bubbles etc.

Angus

ps going out with Capiche and 160 tomorrow weather permitting Need to perfect my demo routine.

pics angus !?!?

For sure

Now now Dave, I understand you needed that excuse to give a simplistic answer

Nah, just kidding. Well that makes alot of sense, thanks to everyone for helping me out here, so if there was a split in the line between the main and the header, wouldnt that mean the header would fill with air as well?

Ok,

Saddo that I am, I went back through this thread to review everyone's C140 colourschemes, and found photos of everyones apart from Shahids and Eddies.. Guys could you post piccies when you get a chance...

Regards,

Steve

Berkcheck the C50 thread for them pics.
you'll find them there>

Adam

yo Berk and foofy how are you doing with your 140's post pics to show how far you are and how close you are to take off.

Adam

lol, sorry Berk. No c140 here.....dont think I coud afford one yet, and even if I did if the build didnt screw up, I would be shaking when I fly it!

definately one to look out for though.

Durrrrrr![sm=confused.gif]

Shahid he means any Capiche schemes[sm=eek.gif]













Adam

Getting there..... Just got to build the wings....

Cutting the tapers tonight...that's an evening's work for me....

It gets more tedious when I start covering... I've been known to spend a whole evening on one aileron!!

Just checking out my Rapier after an unscheduled high speed touch-and-go that I think I got away with.....

Regards,

Steve

Just thinking and i thought would a Mejzlik 16x8.















Adam

only got the ailerons to finish. But I used the horns on my smaragd, but I've been pre occupied with the smaragd. The C140 is huge compared to the smaragd though. Really easy to build to. I will assemble her tomorrow and post a picie of how far I have got.

After I've flown the smaragd ofcourse.

Nah kane go for the J'en 18x6. the finer pitch and more drag suit the codpeice really well if you like 3d and slow pattern

But how would the Mejzlik go on it?


Adam

Adam, why dont "you" buy one and then tell us all how it goes

Berk. ive only got a C50, but heres my scheme.....

Top


Bottom



Colours, White, Red, Dark Blue, Cadium Yellow (bottom of wing only)

Ian

Mejzlik are great props. Not sure how good carbon props are for us guys tho. Supposedly as they are so stiff they tend to "slip" in the air. APC are better cos they flex a bit and when the engine loads up i.e. in vertical climb, the pitch decreases slightly effectively giving you a lower gear. Just what ive heard. Haven't tried a CF prop to judge for myself tho.

Tried to fly the Capiche with the 160 today. Was horrible weather but i went out anyway. Unfortunately i couldn't get the engine going. Seems the one way valve on the injector is in fact a no-way valve on this particular one

Angus

Eddy what do mean "you"!
PS I buy my "own" stuff!


Adam

Angus, I have had that trouble with the check valve. If blowing through it doesnt work, then open it up and carefully use a small screwdriver to free it.

Well, two good flights, but I was a bit concerned that the engine sounded a bit noisy today. Problem identified - Manifold split [:@]. New one ordered, but more expense (was aiming to not spend any money on planes this month, save it as beer money, but not working too well[&:])

Started on my training schedule. Between the C140 and the EF Yak managed to do four of the sets I had listed. The first was far harder than I imagined - inverted straight & level, inverted stall turn (as in belly towards you). My God was it tricky. Everything is reversed, so making it really difficult. Trying to get a straight upline and down line with the belly towards you is very hard, let alone doing the stall turn in the direction you want. Still, thats the idea, make it difficult so that my skills improve

Sprink,

Its a totally different non-return valve on the injector unfortunately. Opened it up but you can only get access to the upper bit, not the lower half. Just seems like its blocked lower down + we reckon the inlet nipple may not even be drilled out. Who knows. Contacted Probuild so will wait and see what they say.

Sounds like a good training schedule you got there Sprink. You ever tried some of the GBR/CAA schedules? You might find them helpfull aswell.

Back on schedules myself actually. Loving it!

Angus

Yep, looked at both the GBRCAA and IMAC sets of schedules. Used them as ideas for the training schedule. Think I could do all the schedules bar the top ones. But doing them so that I got a decent score would be a different matter entirely (hence the training)

Angus, can I ask what you are using the non return valve for? I thought the DZs didnt use them?

They come with it on the injector. Stops the pressure in the rocker cover forcing fuel back so it wont go hard if you rev it up fast. Tried it with a normal non return valve on my 140DZ but it didn't make much difference...not that mine went hard when you reved it up mind.

Angus

nice pics Eddy, i see your using the elastic band method of attaching your gear....

How many of you have set up your C-140's with one elevator servo? Would you mind posting details and pics of the set up?
Thanks!
Rob.

I use 2 * 9405 coreless servos, purely because I have a detachable tailplane, making the staple method difficult..

However, after the event I came across this, which I would have used, and used a single 8411 instead!!

I wish I'd found it before....

http://www.gatorrc.com/mk/mk%20dual%20coupler.htm

Edit to reflect peoples experiences: Apparently these are OK for pattern, not for 3D..... Aint this forum wonderful?!!

Steve

apparently The boy had a bad experience with these, so i avoided them.

I agree with Luke. They're ok for normal pattern with low movement but i used one on my old Alliance freestyle and got elevator flutter. Just too much spring in the system.

If you have to use one elevator servo i would use a normal balsa or carbon push rod with the normal piano wire coming out the sides. You would need to use a bearing at the back to stop it shoogling about tho.

I now use two servos on elevator, F3A and 3D. A much better system and comparable in weight. Plus you've redundancy.

Angus