DH Cirrus/Gypsy Project

No wasn't looking at the wrong plane there was only the one you was throwing around

If I only had asked you to bring your Spitfire would have been great to see it fly and do some flying together with my smaller Spitfire.

Edited By Ton van Munsteren on 11/09/2011 22:10:19

A little plea for anyone that has access to a DH60...

Ton and I have had a long chat about whether the fus is covered in ply or just fabric. The pictures seem to indicate that it may be ply underneath the entire fus.

Anybody know for sure?

Cheers

Danny

Hi Danny. This isn't a definitive answer but may help. I've scanned this from the Haynes workshop manual for the Tiger Moth. It's part of the history chapter.

Hi Chris, and thanks for posting the excerpt. That does say that the fus is a plywood box section on the DH51.

With all the differences that have been made to "Jason" I am not sure that going to see it in person would help as it may not have the original fus, it certainly is a two seater now, which it was not when Amy had it.

I left my Dr Sun plan with Ton, Ton what did he do on that plan?

Cheers

Danny

The way I read the except I thought it was talking about the DH60 when it mentioned a ply box fus.

A little later the book mentions the DH60G variant and calls that the Gypsy Moth. After that, from the book:-
"...in 1928 the DH60M - or Metal Moth, as it became known - was introduced for markets where the use of a wooden fuselage was impractical either in terms of strength or climate. It used a fabric covered, welded steel tube construction..."

This is the first time fabric is mentioned, in this account at least.

You are quite right Chris, I do have new glasses on order I read DH51 and missed the term scaled down DH51. The 60G is pictured further up the page and does appear to be fabric over steel tube.

A large area such as the fus sides should have longitudinal stringers to keep the fabric from flapping, and this is evident on some photos. But not all. And it would make sense if the fus was a ply box as then it would not need the stringer. But I am just guessing

Cheers

Danny

Might be able to help you guys out. I've part-owned and maintained a Tiger Moth for the last five years. The wings of the Tiger are DH.60 wings with the root rib angled to give sweepback, they use the same hinge fittings as the DH.60 but can't be folded, I have photos of those fittings.

The wing incidence relative to the top fuselage longeron (used as the datum on Moths) is 4 degrees for both wings, the tailplane incidence is zero.

The tail surfaces are very similar if not identical, I have photos of ours during rebuild last year, shows the structure and section.

The DH.60 did have a ply box fuselage, same as the 'Queen Bee' version of the Tiger, it was done for cheapness as these were RC drones designed to be shot down!!

I'll upload some piccies in a bit.

Cheers

Gary

thanks Gary you are a star, and I look forward to seeing the pictures

cheers

Danny

Some piccies:

excellent Gary, that should help Ton with his tailiplane sections.

what longeron is the reference Gary, not sure I know which you mean.

Cheers

Danny

Think your finger got stuck!

The top longeron is the one the cockpit doors hinge from if that makes sense, does the DH.60 have doors?

Got loads of technical drawings, here's the lower wing:

hi Gary, yep I know the longeron you mean, not sure the 60 had doors, but the longeron is prpbably the same?

web site didn't apper to have taken my add posting press, eventually it did lol

Thenks again

Danny

Don't think they did have doors, it's hard enough to get in and out of the Tiger with doors!

The tailplane sits on the top longeron and it extends forward to the engine firewall in a straight line.

Havn't got much on the DH.60, it's mentioned briefly in the front of most Tiger Moth books, there is one book on it by Stuart McKay who runs the Moth club, I'll see if I can find it and post the link.

GB