DH9 Engine Run

Congratulations to all involved on the milestone!
I saw some photos of this in “The Moth” magazine a while back. Very exciting.

Here is a link to an interesting adventure of a Hucks built by some folks I know here in Canada. Some great explanations and photos.

http://www.vintagewings.ca/VintageNews/Stories/tabid/116/articleType/ArticleView/articleId/381/The-Moment–First-Hucks-Start-in-70-Years.aspx

Andy

Thanks Andy for keeping us in touch with this wonderful project.

Yes, the Hucks starter disengages in this film – just a few seconds towards the end of what I’m sorry is a very short clip.

And, yes, the wings etc. are all completed.

Look out for further announcements in respect of the DH9 shortly!

What wonderful news!

Unfortunately work has blocked FB access on our PCs, but that means I have something to look forward to when I get home!

Does the hucks starter disengage once the engine fires?

It looks like the Hucks shaft is thrown back a couple of seconds before the end of the clip. Great little video – look forward to seeing more of this amazing project!

Are the wings done? If so, the aeroplane must be getting close to completion!

Great, shame it’s so short, does the hucks starter disengage once the engine fires?

Yes – there’s a pair of angled dogs on the propellor hub and a pin on the end of the starter that engages them. As soon as the engine is turning faster than the Hucks, the angle pushes the pin out, and the starter disengages.

If that isn’t clear (which is entirely possible!), have a look at this:
https://www.ahspares.co.uk/austin-healey/big-healey/Engine-6-Cylinder-ENG595-to-ENG680/NUT-crankshaft-starter-dog.aspx

There’s a pair of dogs much like the nut illustrated on the engine. When it’s stopped, the pin on the Hucks sits against the flats but as soon as the engine fires, the angled part turns under the pin and pushes it out.

Adrian

I think it must be the HAC one (Mr Tangmere knows someone who works there!)

Yours for £1.5 Million and you get a free copy of Britain at War…..

Great, shame it’s so short, does the hucks starter disengage once the engine fires?

Is it the HAC DH 9 ?

Jules