04/08/2016 at 6:28 pm #41758AnonymousInactive
Every now and then, you just have to build something other than Satellites and Ram Rods and build something just for fun. Just for those of us who love the weird and wonderful. Here is my Double Trouble. 347 Sq. Inches of wing area and two Cox TD .049s. The wing/stab ribs are warren truss design with 1/32” sheet vertical webbing between the top and bottom main spars, with two turbulator spars between the LE and the main spar of the wing. The wing has Horner tips, both the and wing and stab are now covered with Ultracote. I ran the engines at home before departing for the Nat’s, and it was no easy task either, I was bit twice by #2 engine. With both engines, running at the same time it is music to the ear and no small feat. The engines are controlled by a two-function Texas timer. The Quick DT function controls #2 engine. With both engine buzzing away time to check out the fuel cut-off system and worked as predicted. #1 shut down and #2 shut down after a short delay. All flights so far have only been with #1 engine only. Hand glides were good with the CG at 70%. The first flight was short, about a 3 or 4 second engine run and a short glide. The airplane climbed out in a “safe” shallow left turn. The glide was a little steep so. I added a 1/16” shim under the TE of the stab and that corrected the glide. Next flight I added a 1/64” shim under the left side of the stab to tighten up the gliding turn. With #1 engine running at top RPM the airplane climbs out at 30 degrees nose up to the left and the glide is a joy to behold, a slow lingering glide to the left. On a whole, I am happy with it so far.04/08/2016 at 6:32 pm #51779AnonymousInactive
This shows the Timer armament, worked just fine.04/08/2016 at 10:54 pm #51782Mike SchwartzParticipant
If you think starting 2 1/2A engines is fun. Try starting 3 Holland Hornet .049’s on Bob Hunter’s 1960 Tri Fai Satellite. I helped Bob on his test flights and it took some time to get all 3 running, but the harmonic sound they made was incredible.
Mike04/09/2016 at 1:33 am #51783George ReinhartParticipant
Also see Stan Hill’s “Hammerheads”
Several different sizes with one to three engines.04/09/2016 at 2:25 pm #51781MikeThompsonParticipant
I can remember back in the mid 70,s that Bob hunter helped Lou Delia build a 1300 salellite with 3 k&b 15,s. Unfortunately I do not have any pic,s of the plane. but I can remember seeing it fly what a sound, And it was fast. With 3 7-4 props truing 18,000 equals a 21 inch prop at 18,000.It had one motor on the fuse and two on the wing. With the way the fuel lines were set up the bottom engine wound shut off, Then the top left and finally the one on the right side. Which wound make the plane bunt and then pull into the glide. 😯04/09/2016 at 2:49 pm #51784AnonymousInactive
Pete I built the Hammerhead, twice! The first one was built back about 1958 -59 but life got in the way, I re-enlisted in the USAF, and the airplane was never completed or flown. About thirty years later I built the second one but I lost interest and the airplane now resides in my shed with a very server case of “Hangar Rash”. If you or anyone wants the airplane I can deliver it to Muncie. The first FF contest at Muncie is the first weekend in June or I can bring it to the Nat’s.04/09/2016 at 5:43 pm #51780Mike SchwartzParticipant
Mike T. All you have to do is ask. I have a photo of Lou with the Tri-1188 Satellite. The plane was a 1188, not a 1300. Its a very poor quality photo, but I will e mail it to you so you can have a copy. You can then post it on the web page if you want. Al Kramer built a two motor model called the Alien. It had two T.D. engines for power, a .049 and a .051. I have a photo of it someplace. If I remember, he flew it at the 1967 Nats.
Mike S.04/10/2016 at 2:50 am #51778George ReinhartParticipant
Thanks for the offer.
See PM with details.
Cheers!, Pete04/13/2016 at 7:24 am #73796AnonymousInactive
Pete drop me a line at email@example.com/27/2016 at 6:46 pm #77085SIMON BLAKEParticipant
Hi Hank, Do you have a photo of your Double Trouble model and the timer arrangement? If you posted pictures, I can’t see them on the forum. I’m curious about what this looks like! Regards, Simon
- You must be logged in to reply to this topic.