HEINKEL HE 111

got on with the elevator today.


tailplane and elevator together.
need to cover the other side of the tailplane yet.


elevator trim tabs.

now do i make them movable or just glue them in place.

The question is moveable, but in what sense?
As you cant 'feel' the elevator load there is little point in having them as true trim tabs with their own servo (but it would look ever so cool on a pre flight check! "set elevator trim to take off position" ) but you could use them as servo tabs (linked to move in the opposite direction to the elevator) to reduce the load on the elevator servo. There are some dangers in doing this as it can increase the chance of elevator flutter if there is any give in its linkage.
In full size before the advent of power assisted controls is was quite common to combine both the 'trim' and 'servo' functions in the one tab..

well i have shaped the elevator leading edge and fitted the robarts.
finished sheeting the tailplane.
got the built up leading edge to do and the wire elevator joiner to sort.
then we can try to fit it into the fuselage assembly.
need some more 1.5mm balsa now before i can carry on.
back to the Lancaster then.

NOW then, are those tabs bost tabs, or trim tabs? my moneys on boost tabs, i think the entire elevator moves off the trim wheel, unlike the rudder, which is deffo a trim tab,

well i have decided to just stick them on solid in any case now.
finished covering the tailplane and making the wing tips up.
cut the slot in the fuselage to take it as well.

have a decision to make about the elevator.
as it is, it is a one piece elevator with a single control horn in the center hidden inside the fuselage.
my idea (and feel free to shoot me down on this one) would be to split the elevator into two halves and have separate servos operating each half.
still with the horns hidden in the fuselage by using torque rods for each half.
being quite a large model i am just a bit concerned that 1 servo might not be man enough and also to give some redundancy for safety purposes.
might even run 2 rx's as well for extra safety.

my 88inch corsair, and my 13 foot fournier both have the central joiner, no probs, they will only be having one rx as well, there is no need to go OTT with your heinkell,

it goes in here, with a negative incidence.



so before i fit it in place i need to cover it.

then i have to make the elevator joiner and fit that.
the elevator goes in first, then the tailplane.
fiddly.

why do i bother as some times i think i am talking to myself.
anyway i am now going to finish off the tailplane and get it fitted to the fuselage.

Just catching up on the forum (been having a bit of a break )
This looks a work of art Tony, I would be happy to just put that fuselage on display as it is !!!!
Will you be keeping and flying this one?

I always get the same feeling on here Tony that im wasting my time .
Thats a nice interesting build, looks good

Tony put - why do i bother as some times i think i am talking to myself.
If you recall, Tony, you didn't want trivial comments on your build threads! Now you are sulking because nobody has posted any trivial comments...... :whistle:

i dont understand why people have to post trivial rubbish all the time.
but it would be nice to have an acknowledgement occasionally
anyway.
the elevator joiner is in and drying as is the central control horn.
final coat of sealer is drying and we can fit it all together in the fuselage later.
then thats it until i have some more wood.
.

Just look at the "thank you's" Tony.

right.
tail plane is in place. that was a fun job.
put the glue in the hinge holes first, then slide the elevator into the fuselage and clamp out of the way.
next feed the tailplane in and twist it so you can slide the hinges home.
adjust the elevator so you get full throws.
leave for 1/2 hour to go off enough.
then clamp the tail plane in place, making sure it is central and level and has the right amount of negative incidence.
you can now glue in place.
leave to dry.






in an hour i can flip the fuselage over and fit and glue the blocks to the underside of the tail.

when some balsa turns up (mr master card bought it) i can make up the fin and rudder, fit them and then sheet the top of the fuselage.
it can then come off of the jig for easier storage..

started the fin and rudder this afternoon.


sheeted and propped in place to get it off the bench.


rudder made up and the trim/boost tab cut out.


need to shape the rudder leading edge, fit the robart hinges, make up the tip of them both and sort out the internal control horn.
then it can be sealed, covered and sealed again.