150% enlarged WingontheWeb HO-229
05-04-2014, 06:02 PM
#501
My Feedback: (3)
Originally Posted by invertmast
Unfortunately not, i relocated to FL with a new job position and the distance and timing just doesnt work out. Not to mention i havent yet been able to even think about doing a new Horten. I have been working on a set of twin V-173 flying pancakes that should be flying later this summer. Next up after their completion will be to finish my F14 and begin work in a 1/4 TA-152 design and scratchbuild.
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MartyMar (08-19-2021)
05-04-2014, 06:10 PM
#502
Originally Posted by ltc
Do you have a link or additional information on the V-173 planes?
http://www.rcscalebuilder.com/forum/....asp?TID=17915
05-05-2014, 12:29 PM
#503
Originally Posted by invertmast
Kwik,
Surprisingly the Kolm IL100 would fit flush with the bottom of the fuselage, but at only 8.8HP (6.6kw) and a max RPM of 6,000 I am slightly concerned it wouldn't have the power to pull the airplane around with authority. The IL135 would definitely have the power at over 10HP, but the cylinder heads would protrude 3/4" out of the bottom of the fuselage.
now to combine a Kolhm with a gear reduction and a scale prop would be AWESOME!
Surprisingly the Kolm IL100 would fit flush with the bottom of the fuselage, but at only 8.8HP (6.6kw) and a max RPM of 6,000 I am slightly concerned it wouldn't have the power to pull the airplane around with authority. The IL135 would definitely have the power at over 10HP, but the cylinder heads would protrude 3/4" out of the bottom of the fuselage.
now to combine a Kolhm with a gear reduction and a scale prop would be AWESOME!
To derail the Horten thread even more, here is a friend ( Ta152 is his username on RCU) of mines Ta 152, flying back in 1978. ( !! )
He constructed it by himself from a Froc 1/72 kit. Webra Blackhead 40, wingspan 1.78 meters.
Cute!
05-05-2014, 03:15 PM
#504
Originally Posted by kwik
Yes, thats the dilemma.
To derail the Horten thread even more, here is a friend ( Ta152 is his username on RCU) of mines Ta 152, flying back in 1978. ( !! )
He constructed it by himself from a Froc 1/72 kit. Webra Blackhead 40, wingspan 1.78 meters.
Cute!
To derail the Horten thread even more, here is a friend ( Ta152 is his username on RCU) of mines Ta 152, flying back in 1978. ( !! )
He constructed it by himself from a Froc 1/72 kit. Webra Blackhead 40, wingspan 1.78 meters.
Cute!
that is a good looking model. I have decided to go through with the TA152. The short kit is going to run around $500 and my laser cutter has a pretty long lead time as he is backed up, which will give me plenty of time to design the landing gear, finish the pancakes and the last bits of airframe component molds for the F14
now i need to decide if i am going to mold the TA fuselage
04-03-2020, 04:58 PM
#505
well. Its been a few years, but its time to build and upgrade another (few) Ho-229’s.
the goal this time around is to shave a few pounds off the ready to fly weight.
all future airframes will be FULL composite. No more built up outer wing panels!
The first center section layup came out to 6lbs and 4oz. I have another center section curing in the mold right now that i believe will be atleast 1/2 a pound lighter with no loss in strength. These new center sections also utilize a full carbon skin and laser cut internal structures.
the goal this time around is to shave a few pounds off the ready to fly weight.
all future airframes will be FULL composite. No more built up outer wing panels!
The first center section layup came out to 6lbs and 4oz. I have another center section curing in the mold right now that i believe will be atleast 1/2 a pound lighter with no loss in strength. These new center sections also utilize a full carbon skin and laser cut internal structures.
04-07-2020, 11:09 AM
#506
My Feedback: (101)
how much weight do you believe you can save by going to a full composite outer wing panels vs balsa? I kinda figured the weight savings is pretty small but there would be a increase in over all strength...especially if it was a one piece builld all the way thru. Just curious and interested
04-11-2020, 08:55 AM
#507
Originally Posted by Ram-bro
how much weight do you believe you can save by going to a full composite outer wing panels vs balsa? I kinda figured the weight savings is pretty small but there would be a increase in over all strength...especially if it was a one piece builld all the way thru. Just curious and interested
04-14-2020, 08:35 AM
#513
Hi I have been a fan of the Horten 229 for a long time. Recently built a RC model prepared by Gary Heathcoat. Its an 82" inch wingspan model powered by 2 counter rotating 70mm EDF's.
Maiden flight was on 2/29/2020, ddays before the lockdown in Puerto Rico. 2nd flight was recorded by a friend. The system does not permit me to post the yooutube URL.
The only thing I regret are the short 4 minute flights With 2 X 6S 6200 MAH cannot get much more. I think maybe a flew to fast and did not do much throttle management. After 4 minutes had still 42%. Maybe enough for 30 secs more.
Anyways it flew great and really picks up attention.
Maiden flight was on 2/29/2020, ddays before the lockdown in Puerto Rico. 2nd flight was recorded by a friend. The system does not permit me to post the yooutube URL.
The only thing I regret are the short 4 minute flights With 2 X 6S 6200 MAH cannot get much more. I think maybe a flew to fast and did not do much throttle management. After 4 minutes had still 42%. Maybe enough for 30 secs more.
Anyways it flew great and really picks up attention.
04-22-2020, 03:04 PM
#515
got the wing repairs done and glasses. I then rolled on a heavy layer of primer to fill in the fiberglass weave and sanded it smooth.
Then i laid out the panel lines and applied the chart pak tape. Then sprayed 2 heavy coats of primer over everything and let dry. Then the chart pak tape was removed leaving a nice crisp panel line.
A few days later i started working on the wing panel parting planes.
i also got the flight control parting planes done.
then the wing parting planes were also finished.
with everything finished and the gaps filled with clay and the wing root corners filleted with clay, everything was waxed and then the PVA was sprayed.
tomorrow begins molding day!
Then i laid out the panel lines and applied the chart pak tape. Then sprayed 2 heavy coats of primer over everything and let dry. Then the chart pak tape was removed leaving a nice crisp panel line.
A few days later i started working on the wing panel parting planes.
i also got the flight control parting planes done.
then the wing parting planes were also finished.
with everything finished and the gaps filled with clay and the wing root corners filleted with clay, everything was waxed and then the PVA was sprayed.
tomorrow begins molding day!
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MartyMar (08-19-2021)
04-29-2020, 12:58 PM
#517
Finally able to post pictures and videos.
This my Horten 229 kit by Gary Heathcoat from California. 82" wingspan and 2 70mm EDF's.
Video of the 2nd flight
Taxing back to pit after 2nd flight
No more flights since due to Covic 19 lockdown in Puerto Rico.
Video of the operating retract sequence
This my Horten 229 kit by Gary Heathcoat from California. 82" wingspan and 2 70mm EDF's.
Video of the 2nd flight
No more flights since due to Covic 19 lockdown in Puerto Rico.
Video of the operating retract sequence
07-08-2020, 08:19 AM
#519
i’ve got the first set of composite wings done. Overall the weight savings is going to be about 1lb, but the biggest difference is the wingtip weight is 1.5lbs less Each with the composite wings compared to the built up ones. This is significantly less and will help reduce the need for nose weight and the overall weight of the airplane.
1/8” ply laser cut test structure
all the parts minus the 1/2” balsa main spars for 4 Hortons.
first wings ready to close up.
First wings all done and on a center section. Flight controls are still left to layup.
Wing set #2 in the vacuum bag with a couple small additions to help stiffen the wing skins in a few places.
1/8” ply laser cut test structure
all the parts minus the 1/2” balsa main spars for 4 Hortons.
first wings ready to close up.
First wings all done and on a center section. Flight controls are still left to layup.
Wing set #2 in the vacuum bag with a couple small additions to help stiffen the wing skins in a few places.
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gpman (07-08-2020)
07-23-2020, 12:02 PM
#520
Currently there are 3 completed wing pairs and 2 1/2 sets of flight controls done. That makes 2 complete kits and the 3rd nearly there.
4 airframes worth of flight controls involve
80 pieces of Airex
144 pieces of fiberglass
48 pieces of peel ply
12 pieces of perforated plastic
48 pieces of breather cloth
That is just for the skin layups.
Them there is:
8 elevon spars
24 outer flap hinge blocks
24 inner flap hing blocks
Needless to say, it was a pretty involved few days to get everything cut out to make this process go quicker.
4 airframes worth of flight controls involve
80 pieces of Airex
144 pieces of fiberglass
48 pieces of peel ply
12 pieces of perforated plastic
48 pieces of breather cloth
That is just for the skin layups.
Them there is:
8 elevon spars
24 outer flap hinge blocks
24 inner flap hing blocks
Needless to say, it was a pretty involved few days to get everything cut out to make this process go quicker.
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08-19-2021, 10:42 AM
#521
Result???
Originally Posted by invertmast
Didn't do much today, kinda took a breather for a bit...
But I did do the first round of sanding of filler on the top of the fuse, then put the 2nd round of filler on. Also did the prelim trimming of the inlets, still more work to do to those.
Then enlarged the wing tube holes in the junction rib so the wing tube sockets would fit through, then flopped the whole thing over, aligned the wing panels and epoxied the wing tube sockets in place. all to do now, is to let it cure overnight, cut the outer wing panels free, trim the trailing edges and then start sheeting/planking the bottom. I figure i'll be pretty close to done building wise by the end of tomorrow, so when I return, I can finish the last bit of shaping/sanding and then start glassing everything.
But I did do the first round of sanding of filler on the top of the fuse, then put the 2nd round of filler on. Also did the prelim trimming of the inlets, still more work to do to those.
Then enlarged the wing tube holes in the junction rib so the wing tube sockets would fit through, then flopped the whole thing over, aligned the wing panels and epoxied the wing tube sockets in place. all to do now, is to let it cure overnight, cut the outer wing panels free, trim the trailing edges and then start sheeting/planking the bottom. I figure i'll be pretty close to done building wise by the end of tomorrow, so when I return, I can finish the last bit of shaping/sanding and then start glassing everything.
What an awesome and inspiring project! Great work!
Last edited by MartyMar; 08-19-2021 at 10:44 AM.
08-19-2021, 11:22 AM
#522
Originally Posted by MartyMar
What an awesome and inspiring project! Great work!
the result was……..
keep reading the threas, your quoted post wasnt even half way through. Lol
we built it, flew it, crashed it, rebuilt it, flew it a whole lot more and then i sold it. Then i retooled and made 3 more full composite kits.
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MartyMar (08-19-2021)
08-19-2021, 12:05 PM
#523
Got it! (my internet is terrible!) Sorry to see such a beautiful project get set back! I am getting back into building(father was really into it as a kid and I now have finally gotten serious about building!) I am stunned by the level of craftmanship that some of you guys(and gals) are able to put in, I am struggling with smaller rockets and balsa(lack of space is the main issue) but I am gonna keep at it, I am glad I came across this forum and now have heights to aspire to for my builds! Now if I can just find a Bv 222 Wiking plan... lol! Keep up the great work! Thank you for the reply!
