Tiger Moth dihedral
Jonas Feldt
upper and lower wing?
I would like to know the angle between the middle-section and the
wing-half on both wings.
Jonas
Jim Gill
> upper and lower wing?
> I would like to know the angle between the middle-section and the
> wing-half on both wings.
>
Lower wing sweep approximately 3.5 degrees
Upper wing sweep approximately 4.2 degrees
Unfortunately I can't be more accurate than this as the scale plan I
measured this from was to rathera small scale (1/48).
Lower wing dihedral 4 degrees
Upper wing dihedral 2.5 degrees
The dihedral is accurate from data printed on the plan.
--
Jim
Dundee Model Aircraft Club
http://home.clara.net/wbruce.ogilvy/
Scottish Aeromodellers Association
Dan Peterson
The three-view of the Tiger Moth in Aircraft Archive Classics of World War Two gives the
upper wing dihedral as 2.5 degrees and the lower wing dihedral as 4 degrees. Hope this helps.
Regards,
Dan
Ken Battersby
I Have just taken delivery of the "Flair" 1/4 scale Tiger Moth kit (It
arrived last week - luckily whilst the wife was out, otherwise......)
In order to "tart it up" a bit and make it less semi-scale, I received
through the post this morning the "Aeroguide" Tiger Moth book. In
this book there is a copy of the OFFICIAL De Havilland rigging guide
for the DH 82A dated 1931. This gives the figures:-
Upper wing dihedral: 2degrees 4.5" (each wing)
lower wing dihedral: 4degrees 30" (each wing)
Dihedral is measured along spars
Sweepback at strut - top wing: 11"
Sweepback at strut - bottom wing: 9 1/8"
(NB. Presumably you know the scale of your model, so you can easily
work out the sweepback from the above full size figure. Ken Batt)
Wing Incidence (top & bottom wing) 4degrees
So there we have it from the official De Havilland rigging guide - I
assume you cannot get more accurate than that!!!
Regards
Ken Battersby
To reply by Email please remove X from <GlobalnetX.co.uk>
Jim Gill
>
> I Have just taken delivery of the "Flair" 1/4 scale Tiger Moth kit (It
> arrived last week - luckily whilst the wife was out, otherwise......)
>
>
> Regards
>
> Ken Battersby
> To reply by Email please remove X from <GlobalnetX.co.uk>
Congratulations Ken, you've got a good model there. What engine do you
plan to use?
I have one flying on an OS 120 Surpass mk1. It flies well on this
engine, not overpowered but just the right amount. It flies just like
the full size.
The one major change I made was to move the servos in the fuselage to
the very front, just behind the firewall. This saved about 9 oz of
lead in the nose. I also have the Rx battery strapped to the engine
bearers and a 2.5Ah gell cell above the engine for an onboard glow. It
still needed around 1.5 lb of lead to balance although the CG is near
the front of the range. This makes it a little prone to nose over on
take off and landing if you don't get the elevator right. When I
finally get round to fitting a pilot it should help with this as it
will move the CG back.
I was able to get some high torque servos made by GWS, these are
shallower than normal so I was able to mount them with the servo disk
level witht the wing bottom to give a more scale aileron drive. The
servos are slower than a normal servo but this is no problem with the
Moth.
You can find a pic of my Moth on the Dundee club webpages (see my sig)
Ken Battersby
wrote:
>"Ken Battersby at koko...@globalnetX.co.uk wrote the following message on Sat, 28 Nov 1998 10:02:46 GMT:"> Hi Jonas
>>
>> I Have just taken delivery of the "Flair" 1/4 scale Tiger Moth kit (It
>> arrived last week - luckily whilst the wife was out, otherwise......)
>>
>
>>
>> Regards
>>
>> Ken Battersby
>> To reply by Email please remove X from <GlobalnetX.co.uk>
>
>Congratulations Ken, you've got a good model there. What engine do you
>plan to use?
I'll give the wife time to adjust to the new model and then probably
buy a Laser 150 for the Tiger Moth (Hopefully she will think it is an
old engine!!!)
>I have one flying on an OS 120 Surpass mk1. It flies well on this
>engine, not overpowered but just the right amount. It flies just like
>the full size.
The "destructions" in the box say that the prototype flew nicely on a
Laser 150 so I'm assuming it is a good match. I am not sure of the
way the Laser is mounted, I suspect by the backplate so I may have to
slightly modify the front end/engine bearers to allow for this.
Failing the Laser, I have an old Enya 120 mk1 that used to fly my
Precedent Stampe quite well and that I dismantled some years ago (it
seemed a good idea at the time) - could be the excuse I need to
re-assemble it.
>The one major change I made was to move the servos in the fuselage to
>the very front, just behind the firewall. This saved about 9 oz of
>lead in the nose. I also have the Rx battery strapped to the engine
>bearers and a 2.5Ah gell cell above the engine for an onboard glow. It
>still needed around 1.5 lb of lead to balance although the CG is near
>the front of the range. This makes it a little prone to nose over on
>take off and landing if you don't get the elevator right. When I
>finally get round to fitting a pilot it should help with this as it
>will move the CG back.
Thanks, I'll bear your remarks in mind. I always leave the radio
installation until the model is completely finished and - touch wood -
I have literally NEVER had to add lead to a model yet (there is always
a first time). I am thinking of fitting a "Cyclon" cell for on board
glow so I will juggle that about with the radio gear. Having said
that, I have only briefly looked at the plans and at first glance I
have a feeling that access to the interior and radio may be limited.
Am I correct??
I bought the Tiger Moth because, apart from liking the model, I have a
partly built "Paper Aviation" Regal Eagle (Laser 200 powered) that I
have ground to a halt with and really must get flying. I find that
when this happens, buying a new model usually spurs me into finishing
the half built one. Certainly it seems to be working, as I have done
more work in the last three days on the "Eagle" than in the last 6
months. The snag though is that I dare not open the "Tiger Moth" box
too often or I will finish up with two half built models. (Err. I'll
forget about the partly build "Glen's Model" 1/4 scale Extra and the
"Mick Reeves" 1/4 scale Sopwith Camel)
>I was able to get some high torque servos made by GWS, these are
>shallower than normal so I was able to mount them with the servo disk
>level witht the wing bottom to give a more scale aileron drive. The
>servos are slower than a normal servo but this is no problem with the
>Moth.
I am planning on JR 517s. I haven't checked the fit yet.
>You can find a pic of my Moth on the Dundee club webpages (see my sig)
Motorbike???? It should fit in my Escort Estate then. %^]