aeroscale

Any chance you folks can post some photos of the Broncos at your upcoming Fly-In?
AEROSCALE

FliteMetal

Yo Dude!

Wayne22

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dmyers0403, I noticed that you used the same hinges on your ailerons as well. Normal practice is to hinge the ailerons either at the mid point, or above the wing (opposite to the flaps). this builds in some natural aileron differential. With your current setup, the aileron that goes downward, would travel a lager distance (into higher pressure air) than the upward moving aileron (into lower pressure air). If you banked to the left, for instance, you would notice the nose of the plane yawing signifantly to the right. Rolls would have a large displacement to them and not be pretty at all. If it is not too late to rethink the current system, you would end up with a much nicer flying Bronco..

gsmith6879

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I plan to take a number of photos for the event and especially of the three Broncos. The two scratch built Broncos have been flying sometime. Dick's ARF will see it's first flight in Muskogee this weekend. If everything goes well, I hope to be able to publish photos of the airplanes on the ground and in flight. Our dream when we started this madness was to fly 2-3 in formation at our IMAA Flyin. Weather looks good. If all the parts and pieces stay together, we might make that happen.

Wish us luck.

gsmith6879

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I'll answer for DMyers. Relook at his photos of the wing. What you are seeing is the use of the flap hinges for 4 flap sections. His ailerons are hinged in the conventional manner.

dmyers0403

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OK Gains I have switched flap hinges - please tell me Im OK (comments by others welcome too)- It will have to do as is to get ready for flite - pilots etc will have to wait on getting complete paint as well as cockpit - just want to get it ready for flying. Glow igniters ain't probaly not going to make it - will try but may have to trust the ole glow pots to keep aglowing.

Wayne22

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oops.....my profound apologies......

gsmith6879

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Dick,

The hinge location and setup on the flaps looks good to me. Mine hinge right at the bottom of the surface and work pretty good. Bottom line. I have used the flaps one time for landing. This Bronco design lands great without flaps.

Gaines

dmyers0403

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Looks like mine is going to be 20 plus pounds - will wiegh tonight. I am expecting up to 22# was'nt that about what yours came in at ???

gsmith6879

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Mine weighs 22 pounds after the rebuild. Mike Wise' weighs 21 pounds. They still fly like a heavy trainer.

Wayne22

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mine was (past tense) 21 lbs. it flew great..with flaps down and a bit of power blowing over them it could almost stop in the air....

dmyers0403

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OK - Finally got maiden flight in this weekend. Had to debug problems - build stuff - not kit design - flew one round with cowls off so engines could be worked on (new OS 61's). Never got retract problem solved but flew with gear down. Flew solid - Test pilot Howard Davidson it was solid and responsive and very stable. Only trim was a little UP trim. Landing was no problem utill touchdown. I failed to locktite lower strut screw which vibrated out in flight. Lower gear arm with wheel came off whick resulted in a lot of scrapping on asphalt and tore gear blocks out. Easy fix but called it quits for the day. Gaines and mike flew threir OV- 10's but I was busy getting bugs corrected and did not get any pics - no formation flying today.
Detailing not completed - Just wanted to get 1st flite in.
At $375 this has got to be one of the best buys out there for an ARF - especially for this size of plane etc.

L Lyle

I bought fiberglass fuse, pods at Toledo a few years back. I bought it from American Eagle. I have to cut out the ply formers for it. The wings are foam. I think American Eagle might be out of business. I haven't been able to log on to their website for a few months.

gsmith6879

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We had a great turnout for the Hatbox Field Memorial IMAA Flyin Friday and Saturday. Dick did get his Bronco in the air and it looked great.

We had 34 registered pilots with 9 twins. 3 Uravich Broncos (1 ARF and 2 scratch built from plans), 3 Nolsen Cessna 310s, my F83, Ollen Ruhterford's Scale Masters winning Ziroli Beech D18, and Merlyn Graves' giant 98 pound Bristol Benheim Bomber. All flew either Friday or Saturday. You have to see that Beheim Bomber in flight to appreciate Merlyn's skills in both building and flying.

Mike's Bronco had a servo failure after Friday's flight on the elevator and Dick's landing gear strut problem kept us from flying in formation but maybe next year.

I can't say enough about how this Bronco design flies and the ARF version just further proves the quality of the design.

moldmaker

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Where can you get cowls and all accessories for the OV-10 ?? Been trying to contact hobby hangar but no responce . Got the plans ordered would like to get all accy . ordered also . Will be building the giant scale . Thanks

aeroscale

I've got a plastic set consisting of cowls, canopy, nose cap, rear cap and wing tips. www.richuravitch.com

fancman

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I got a set of wing tips after I melted one of my plastic ones. The FG wing tips are outstanding as I'm sure the other parts they sell are. http://www.fiberglassspecialtiesinc.com/catalog.htm

moldmaker

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Where did you get your flap hinges ?? They look GOOD

dmyers0403

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Flap Hinges came from Hobby Lobby but they do require a lot of wing modifications to use the way I did. Depends on how much effort you want to put into it. The standard flaps work very well.
Fiberglass specialties was at the Hatbox event and they do have fiberglass cowels, center section nose and rear cones. No canopy.

PS: Shamless plug for Gaines and the Hatbox event - Great fly-in and a bunch of great guys. Fantastic flying field with paved cross runways and grass fields for emergncy landings which I admit to using on occasions. We had a ball. Mabey we could get a larger group of Broncos there next year ???????

OH-Yea: Gains showed his improvments he made on the retracts for his 96" Bronco to be finished soon?? The detail and craftsmanship is unbelievable. Pics will not do them justice not to mention the final paint finish - cannot wait to see the plane completed - but he is now on a mission to detail his cockpit to the inth degree!! Be worth seeing next year.

Johng

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Dmyers, I missed the fact that you posted pics and flew with the flap hinges after you fixed them. They loolk great. That's the motion you want.

THey will probably fly very well. But if you extend the top lip, it will probably increase the lift available. Do you 'need' more lift? Probably not. However, a 30-40 deg glideslope ending with a 20 foot rollout can turn heads.

Maybe it's a case of "ain't broke, don't fix it", but if you wanna tinker, a strip of 1/64 ply painted white and hot glued over the monokote will let you try it easily while being removable. Either way, I bet they are a blast.

Make sure you figure out the elevator trim needed when the flaps are down, before you make an approach. And be carefull about adding power with flaps down, as that can change trim too.

Anyway, I photoshoped my idea for the slot lip:

dmyers0403

My Feedback: (48)

That geat info - thanks - Im not a flap guru but all this info is good stuff to learn - will try it out after I get comfortable with plane so that I can actually detect difference in flap design and not variations base on my flying input.

gsmith6879

My Feedback: (37)

Just keep in mind that this design flies and lands very easily without flaps. I do plan on practicing with flaps on my next few flights to see what they will do for takeoffs and landings. They might help some with takeoff since the airplane sets nose down and needs flying speed before rotating for takeoff. Without flaps it rotates at high speed and then climbs out at about 45 degrees. A little scary at first but you get used to it in time. I lost an engine during one of these types of takeoffs and had to rebuild the wing center section. Just no time to pull back the throttle before it snapped.

Does anyone have any experience with flaps on this design?

FliteMetal

Gaines the wing is an exceptionally high lift design. Just a wee bit of flap will go a long long way. What is the amount of compression travel on your mains? I'd increase the travel to let the plane reach level at the application of full throttle. We're talking maybe a 1/4 inch more travel...or so.

Be aware that this will also permit the mains to receive individual compression during landing. Don't let this become a trans-axis issue at touch down. Too soft or hard a spring will not permit things to settle as you want. Typically OV-10's began to yaw when they reach ground effect...models and full scale. Yes, you can glide grease one one, but they tend to track into the wind because of the twin fin and that's not necessarily parallel to the runway...;^)

gsmith6879

My Feedback: (37)

Compression on the struts is fixed and can't be changed. You have to have a fairly stiff spring on the strut to take the landing loads of a 22 pound airplane. There just isn't much room on these struts to do anything else. I experimented with 3 different spring configurations before I got one to work. Shindin had the same problem and solved it the same way I did. I get a little bit of wiggle on landings but it is not very pronounced and doesn't affect the landing. When I land the struts work just right to make the airplane stick like glue with no bounce. I think about 15 degrees of flap will help lift the nose on takeoff. I just need to test that theory in actual flight.

Wayne22

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This low res pic shows our bronco in a typical landing...it pretty easy to set down at a slow speed, nose up with or without flaps. With flaps, a bit of power helped it touch down incredibly slow..it helped having the flaps directly in the prop blast....