Hi there i currently have an old precedent hi-boy kit, i have managed to buil the frame of the fuselage, but i am now having dificulty with the rest, of the instructions, as there is hardly any illustration, do any of you guys have any tips on how to build this aircraft? Also may i ask that doesn't this aircraft have aliron control? And finally what size Fuel tank should i use for it?

Thank you very much for your time

What exactly are you having a problem with? I built one some time ago but have built a few others since then so the memory is a bit dim! Tried to find the instructions the other day for someone else but seem to have lost them.

As I recall the wing is a foam core with some kind of ply skin. Mine had ailerons, however I believe there was also a three channel version that did not. Sounds like you may have the latter. Can't remember whether you need to glue a leading edge to the wing or whether it comes finished. Pretty sure I had to glue some balsa strips at the back to hinge the ailerons.

Otherwie the wing build should be straightforward, in the kit there should be one or more braces for the wing join. Remember to dry fit first. Think there are also a couple of balsa plates that need to be glued to the wing tips.

Tail surfaces I think are solid balsa so should present no major problem. Thought that mine came with a tank included in the kit, if you don't have one 8oz sounds about right.

Hope this helps


Terry

Well i am having a problems by just looking at the kit that its just lumps of plywood, and i don't even know how to work the instructions, and mine is only 3 channel, so i was wondering how do i roll whilst in flight, as it does not have alirons. Oh boy my heads spinning?[&:]

I went to my local model shop (Aero-Dynamics), and asked him about the precedent hi-boy and he said it was his first aircraft model, and gave me a couple of pointers on putting foam around the engine as it viabrates the whole fuselage without. Does anyone now how to mount the engine for the precedent hi-Boy?!?

Do you need to buy some sort of mounting equipment or do you just mount it straight onto the wood?[&:]

Hi, i have the fly-boy, no idea if it's the same but i shall post anyways

*runs off to takes pics with phone as the camera is broken*

Right, sorry about the bad images


[link=http://homepages.nildram.co.uk/~tux/otherforumposts/rcu/flyboy/mds2.jpg]pic of engine fitted[/link]
I've put some fuel tube over the bear threads just in case the nuts work loose

[link=http://homepages.nildram.co.uk/~tux/otherforumposts/rcu/flyboy/wing.jpg]the wing[/link]
The covering was meant to be purple, looks more pink though

[link=http://homepages.nildram.co.uk/~tux/otherforumposts/rcu/flyboy/wingmod.jpg]aileron mod[/link]
I'm thinking this will be of no use, but what the hey

[link=http://homepages.nildram.co.uk/~tux/otherforumposts/rcu/flyboy/mount.gif]engine fitting[/link]
And how i fitted the engine assuming it uses wooden bearers - drill holes on the bearers to suite the engine, make up to of the parts in the image file, place in the holes from the bottom, put engine down from above, and fix with nuts


And one more back when i had a good working camera
[link=http://homepages.nildram.co.uk/~tux/rc/flyboy/big/toprunning.jpg]image[/link]

Thanks alot this is just what i needed to see, the fly-boy is like the hi-boy exept the wings are different, the kit came with a piece of wood inside a plastic bag, and two screws is that the engine mount, also what engine are you using is it simular to my thunder tiger gp42 abc!?! Thanks again

For a wooden mount their should be 2 blocks of pretty hard wood, long enough for the engine to sit on, go through the firewall and at least 1 former

like so - [link=http://homepages.nildram.co.uk/~tux/otherforumposts/rcu/flyboy/bearer.gif]link[/link] - hard to draw that one

If the included screws are self tappers, chuck them out, buy some machine screws and nuts and mount it properly


Oh, and i have a feeling the fly-boy it a tad smaller, as the engine in the pic is an old MDS .17

Thanks and just three more questions, A) How do you stop the engine running? B) How do you prime a engine C) Do you glue the wings together with epoxy or do you attack them together a different way? Thanks a lot mate you were a big help?

A) How do you stop the engine running?
You normally set the radio so when you move the throttle stick and trim to the bottom the engine stalls (carb closed)

B) How do you prime a engine
I'm a bit naughty here, i use an electric starter, and pretty much wind it till it runs [:-], best way is without starting equipment connected to the engine (glo start, starter motor etc.) put your thumb over the carb, get a good grip on the prop and turn the engine over by hand till fuel reached the carb this kind of thing you will be taught at a club (i hope you planning to join, or have joined one?)

C) Do you glue the wings together with epoxy or do you attack them together a different way?
The way it's normally done if by fitting a dihedral brace (will be a bit of thick ply with an angle in it) with lots of epoxy, and nice coat on the 2 meeting ribs, then simply pushed together. It's also best when you've just put them together to lay them out of a board (or kitchen floor if it's flat...) with one wing propped up to give the correct dihedral


Hope that helps

thanks again, i was looking at my engine and with the carb lever set to fully closed position, the carb still has a small gap, should i re adjust this or is it normal!?!

OK,

If you look at your engines manual there should be an "idle speed" adjustment, this will be small screw or something that limits the travel of the carb barrel,
be sure you've got the right screw and slowly turn it until the carb can just close fully

You can also stop the engine by blocking the air intake, or one of the fuel tubes, but with a prop spinning away at the front this isn't the safest way to go

Hey, me and my dad are making an old hi boy kit, the instructions are rubbish. I fugyred it out. An 8oz fuel tank is good. Hope this helps!

UKMaxi,

Best of luck with this model, let us know haow you get on with it.

Please join your local model flying club. You should find that members will be only too keen tohelp you with settingit up and flying it, besides you'll benefit from the club's insurance should anything go wrong.

Be sure to fuel-proof the engineand tankbay with several coats of varnish or a proprietory fuelprooferto prevent methanol from penetrating the glue joints and undoing all of your good work.