DR-1 (Sands): Builders Group

[greatwarpilot]

Good point Pete.

[fighterjock44]

Originally Posted by Jim Bruton

Does anyone have information on the small tabs that weld onto the rear side of the cowl ring for mounting the wooden side panels? I have seen photos in Leaman's book that shows them but unless I am missing a page in Ron's plans, I don't see them indicated anywhere. I can guess the pattern and could probably guess at an adequate number to use, as well as the hol size and rivet/nut-bolt size but if anyone has already worked this out, I'd appreciate knowing!

Thanks!

Jim

Jim,

I am almost at the same point to locate and weld the tabs too. I couldn't find any info on the drawings either. Like you, I will be probably have to locate them using some logic.

Steve

[Jeff Brooks]

I went to Achim's thread, page 217, post #2167. FTS Projects
It looks like the tabs are exactly like the ones that hold the turtledeck on.
Also try page 219, post 2190. FTS Projects

[CORVUS]

Originally Posted by Jim Bruton

Does anyone have information on the small tabs that weld onto the rear side of the cowl ring for mounting the wooden side panels? I have seen photos in Leaman's book that shows them but unless I am missing a page in Ron's plans, I don't see them indicated anywhere. I can guess the pattern and could probably guess at an adequate number to use, as well as the hol size and rivet/nut-bolt size but if anyone has already worked this out, I'd appreciate knowing!

Thanks!

Jim

Jim,

It's on sheet 22. In the center left of the sheet. There's two details which show method using radial engine and another using a rotary. In both cases there are 24 tabs required. Do you have sheet 22 ?

Lou

[Dogtail2]

If using a radial, the side cowls are glued and nailed to curved glueing strips. I think Jim is using the Lycoming so will be using the tabs for firewall and sidecowl as per rotary version. The material sizes for the tabs is given along with screw sizes on sheet 22 as Corvus said.

Finished rivetting all 4 struts and fitted them to the Tripe to admire
First shot shows those cowl tabs Jim was asking about.

[CORVUS]

Originally Posted by Dogtail2

If using a radial, the side cowls are glued and nailed to curved glueing strips. I think Jim is using the Lycoming so will be using the tabs for firewall and sidecowl as per rotary version. The material sizes for the tabs is given along with screw sizes on sheet 22 as Corvus said.

Finished rivetting all 4 struts and fitted them to the Tripe to admire
First shot shows those cowl tabs Jim was asking about.

Magnificent !

[sheppo]

Awesome work. I appreciate a steel tube fuselage more & more everyday.

chris

[Jim Bruton]

Thank you Corvus & Pete! I'll double check that page 22! Must have been looking too hard.

Pete, your progress is amazing- keep going! I'm somewhat close behind you- will try and update with photos soon- right now fuse is at my house and wings are at Ed's.

Jim

[baldeagle]

This probably won't help any of you Triplane builders out there, but I had the chance to fly the Lafayette Foundation Triplane the last couple of days at Platte Valley Airport in Colorado, and I can tell you that flying from an airport with an elevation of 5,000 feet there is a noticable difference from what I remember of Brian's Triplane, especially when you're coming down final (towards a 50 ft. wide paved runway). She really wanted to come down when you pulled the power back on final, and landing speed was noticably faster than at sea level. Had a great time though, and did a formation flight with their Fokker D.VIII. Will post some photos when I get my camera batteries recharged.
Their Dr.I has a 180 Lycoming, and climb performance was fine at that altitude, so that engine does a nice job with it.




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[Dogtail2]

Thanks Baldeagle.

I would be interested to know what prop dia. and pitch it uses with the 180 Lycoming and if there are any cooling issues with the engine. Ive heard the black Triplane here in the UK runs pretty hot. It also has a Lycoming 0-360.