Henschel HS129 B-3 - Page 2 - RC Groups
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Jul 27, 2012, 07:53 PM
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wizard of odd's Avatar
Impressive CAD work!

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Jul 29, 2012, 07:53 PM
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Doug Bartley's Avatar
Hi Ken: Another build I see and a very challenging one.
Point of interest, I don't see your other plane as being grossly over weight, it appears t fly wonderfully.
I'll be interested to see this develop, always fascinated by others with skills way beyond my own. Doug B
Jul 29, 2012, 10:20 PM
Give me a TriStar anyday!
NAKIAM949's Avatar
fascinating build, definitely subbed
Jul 30, 2012, 01:30 PM
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Got further along on the design, a little more to do on the fuselage frames for the magazine housing then elevator to draw and I will be ready to start building perhaps by next weekend.

Having drawn the h-stab frames I measured the span at 850mm, one of the problems of drawing in CAD is that you dont get any real perspective of size, I was quite shocked 850mm is bigger than the wing span of some of my planes, had to got out and measure the car to ensure it fits otherwise I would have had to make them removable.
Aug 11, 2012, 07:10 AM
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Wormboy's Avatar
Looking like a great build. and a great subject to choose.
With that great big cannon I suppose it is the WWII equivalent of the A-10 "warthog".
Designed for stable low flight and to punch holes in the enemy heavy armour.
Aug 18, 2012, 11:49 AM
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Hi All,

I have started construction now with most of the structural core of the Henschel done. Took a good 3 hours to cut each of the main frames as they where too big for my jig saw. All interlocks together nicely like a 3D puzzle, can almost assemble without a jig.

I am part way through completing the wing structure, just ailerons and flaps to do then the design is complete.

This part weighs 376g which isnt bad considering its size and the rest of the fuse is very light weight I hope to get the whole fuse structure in at under 1.5Kg.

Love this part of building when you begin to get an idea of what the plane will look like.
Aug 18, 2012, 12:01 PM
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wizard of odd's Avatar
Well done, it looks absolutely stunning! Those parts look like they have been CNC router cut.
Aug 19, 2012, 08:14 AM
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Ducky22's Avatar
Simply incredible Ken! This looks to be a very big plane. What is the diameter for the wing tube?
Aug 19, 2012, 10:33 AM
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Wing tube is 1", wing span is 2.4m so dont think its as big as the Black Widow David but it certainly looks big on the bench.

Just getting set up to work on the nose this afternoon, more pics later

Aug 19, 2012, 01:41 PM
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Made up the nose frames and trial fitted, this area has given me some jib and not sure if I have it right yet.

Also had some problems with the lower part of the nacelle, made up four of the smae part before I was happy, I have corrected the drawing
Aug 25, 2012, 11:31 AM
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She is coming along nicely, dry fit of everything made to date put together all works out really well, a few little mistakes made with stringer locations etc but nothing dramatic.

Took delivery of the Hobby King air retract set, yes I know not exactly Robart etc but for $70 odd dollars I am amazed at the quality.

I have the jig designed, I need to design a further frame near the nose as it needs more support once done and a few H Stab frames made I can start thinking about gluing up which should be within a few days.
Aug 25, 2012, 09:23 PM
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wizard of odd's Avatar
That looks really nice- very neatly done. Those minor stringer misalignments may bother you now, but once she's sheeted it will make no absolutely difference structurally.

What thickness of ply are you using for the structure? Do you have an estimate of ready to fly weight yet?

I can't wait to see the next update!

Aug 26, 2012, 03:01 AM
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Thank you for the encouragement

I am using a combination of 1/16, 3/32 and 1/8 LitePly dependent on how much strength is needed. I am hoping to come in at around 6Kg all up, I will be breaking the model down again today and will weight the components so far, let you know later

Aug 26, 2012, 03:54 AM
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wizard of odd's Avatar
6kg will be really light for a model of that size. (I'm working on a 2.4m Beaufighter design using 1.5 and 3mm Bass ply, and will be lucky to reach 8kg. Around 3kg of that is retracts, oleos and battery packs. Bloody battery packs alone weigh almost 1kg each)

Yep, build logs kind of pressure you to keep moving along, don't they

Keep up the great work, I'm really enjoying this one.....

Aug 26, 2012, 05:47 AM
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You are probably right, I am determined to keep her as light as possible, my Black Widow came in at over 7.5kg, I think I can keep this below 7kg at least, at the moment everything in my last post weighs 668g which is the main structure of the fuse, pretty pleased with that

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