Windrider Habicht - Page 5

Ben D Wing · Oct 29, 2009, 11:12 AM

Firstly, humble apologies to all about the mis-spelling of Hanna's name, it should read, ''Hanna Reitsch''.

The pilot figure is supposed to be a WW1 British pilot to 1/5th scale, but it looks more like a woman to my jaded eyes! It was a (not cheap!) purchase off ebay. The seller also does other scales of Assagai pilot busts....http://search.ebay.co.uk/_W0QQsassZh...opefulsQQhtZ-1

Here's a link that gives some scale detail....http://www.letmodel.cz/gallery-habicht.htm

Joespeeder · Oct 29, 2009, 02:00 PM

Thanks Ben D Wing,

Cool a new source for pilots. It does look like a female.

Here's a link to the post in my ME-163 thread that has links to a YouTube series on Hanna.

http://www.rcgroups.com/forums/showp...2&postcount=11

Joe

www.thecaterhamproject.com

Ben D Wing · Oct 29, 2009, 03:08 PM

Wow! Thanks for those videos Joe, very much appreciated!

Hanna was given the iron cross after a very bad crash in a 163 Komet which seriously injured her. The woman was a flying legend in her own right, well before her time and was the first female in the world to fly a jet powered plane. I think her political beliefs were pretty strong even in her latter years, but hey, no one's perfect.

Anyway, back to the Habicht; I deliberated long and hard about how to fix the windshield and finally decided to do it similar to the current full-size red/white version. The Wasserkuppe museum version (blue/white) uses 4 alloy brackets instead, but IMHO the screw method is easier and more secure. The screws I used are too large for scale, but as this is only a semi scale model it doesn't really matter.

MooSey-UK · Oct 30, 2009, 06:28 AM

I think that looks pretty good

I was lucky enough to see Chris Williams 1/3rd scale Habicht at Whitesheet last week. Fantastic.
This thread is softening my resolve not to hit the Buy it Now button!!
Im looking forward to reading the flight tests.
If Ming had just made the span bigger I could'nt resist!
Im pondering one of these or a 4m ish scaley at the cheaper end of the market.

suirendoujin · Oct 31, 2009, 11:25 PM

I got a little done on Saturday. I was hoping to extend the aileron and spoiler servo leads and be done with wing part of this build. Turns out I did not have any lead wire of appropriate gauge.

Totally embarrassed, frustrated and disappointed. Well, good thing was, parts I had ordered to Hobby King has finally arrived. Took 20 days though. /

I had tried to use the hinge Ben D Wing plans to use, but just could not figure it out. A 3 mm gap or clearing was necessary to make them work. If anybody does it successfully, do post here and educate me. So, used ordinary hinge for spoilers. Still 1 mm gap, but am happy with the results. Also epoxied a ply dam to the bottom of the nose and then epoxied some steel shots as nose weight. 400 to 500 g of weight in the nose. This looks like an impossible task. At the moment, I got only 250 g in there. Oh well.
Also, I CA'd a small cover fabricated from a vac formed pill case to the front end of the tow release so steel shots and epox wont clog it. By cover I mean those plastic used to pack each pill on a sheet. Sorry, forgot to take any photos of this one. These pill cases also make nice head rest on small scale ships as well as head sets for larger pilot figures.

Ben D Wing · Nov 01, 2009, 03:37 PM

Due to the postal strike in the UK, I doubt my HobbyKing hinges will be here any time soon, so I've devised a different way of hinging the airbrakes because I'm getting short on patience.

I've simply used a 3/4" full width strip of Solartex, which is a heat shrink fabric covering material, and ironed it on the inside of the airbrake door. The instructions suggest clear tape on the outside, but I'm not really keen on the idea if I'm honest.
I have also added a wooden frame on the inside of the airbrake cavity and this serves to ensure that the door sits at the correct level when shut. The supplied door control horns, wire pushrods and servo mounts are fit for purpose and actually fit and work very well. Just ensure that the two airbrake servos are mounted in the correct orientation otherwise the doors will work like ailerons, not good!
Setting up of the machanism was a bit of a fiddle with the pushrods needing about 40% of their length trimming off, but eventually I got the system working well.
Not much left to do now so I'm hoping to maiden this glider later on in the week, weather permitting.

Ben D Wing · Nov 02, 2009, 08:17 AM

A knock on the door today resulted in the arrival of 'Hanna', and it's a very well painted, sculpted and lightweight bust. A few deft cuts with a razor saw had the pilot fitting very snugly in the cockpit and to my eye it looks exactly correct for this type of glider. I have also reduced the size of the canopy screws by holding them in a pin vise and then grinding them down with a Dremel. They're not perfect, but do look a little bit better.
The on/off switch is simply mounted inside the cockpit where it's easily accessible and doesn't spoil the looks of the airframe.
I have decided to initialy only put 400g of ballast into the nose and I've achieved this by using heavyweight pest control air rifle slugs. I lined the inside of the nose with aluminium foil, poured the slugs in and then drizzled a small amount of thin cyano over the whole lot. Once the model is complete I'll simply add more ballast if required and then permanently epoxy the whole mass in place.
NOTE: If too much cyano is used the heat generated as it goes off could damage the GRP and paint, so please be careful if you use this method. The same goes for quick setting epoxy.

suirendoujin · Nov 02, 2009, 09:48 AM

Servo leads arrived today from Hobby King. So, can proceed once again.
Ben D Wing, Ready for maiden, I suppose. Congratulations. Looking forward to your flight report. My current goal is to finish mine by Nov. 28.

Ming · Nov 02, 2009, 09:50 AM

I have only one special edition purple color! who like?

Ming Lou

micbu · Nov 02, 2009, 10:06 AM

Me!

Michael

Ben D Wing · Nov 02, 2009, 11:25 AM

[quote=suirendoujin;13485768]Servo leads arrived today from Hobby King. So, can proceed once again.
Ben D Wing, Ready for maiden, I suppose. QUOTE]

I won't be ready for the maiden at least untill the weekend as I'm working nightshift this week!

My HobbyKing shipment has yet to arrive, but it's too late now as the brakes are already hinged.
I forgot to mention the servo covers I made, so here are a couple of photos. They're made from 1/16th birch ply and covered in white film to match the wing colour. They have been lightly secured in place with spots of UHU Por so that they can be removed at a later date if required.

Ming, a purple Habicht!? How, why?

AeroNut45 · Nov 02, 2009, 06:16 PM

[quote=Ben D Wing;13486432]

Quote:

Originally Posted by suirendoujin

Servo leads arrived today from Hobby King. So, can proceed once again.
Ben D Wing, Ready for maiden, I suppose. QUOTE]

I won't be ready for the maiden at least untill the weekend as I'm working nightshift this week!

My HobbyKing shipment has yet to arrive, but it's too late now as the brakes are already hinged.
I forgot to mention the servo covers I made, so here are a couple of photos. They're made from 1/16th birch ply and covered in white film to match the wing colour. They have been lightly secured in place with spots of UHU Por so that they can be removed at a later date if required.

Looks very clean setup, but looking at the linkage, it appears that you get a differential of throw. And it looks that you may get more down throw than up, which is not really desirable. But with modern transmitter technology it can be easy overcome. The Servo IMO would be better of being attached to the servo cover so the arm would extend more through the bottom of the wing.
Thanks for posting all your progress. Keep up the good work, I am very close to commit to a Habicht myself.

BTW Hanna's surname was Reitsch.

suirendoujin · Nov 02, 2009, 07:09 PM

Ben D Wing,
Then maybe, just maybe, I might beat you to the maiden?? I will be busy this week for sure, preparaing a big presentation at work.

You should paint the aileron linkage white. Plasic model paint will do a nice job. Wipe it with alcohol first as a pseudo primer.

Ben D Wing · Nov 03, 2009, 05:47 AM

AeroNut, I agree about the differential, but what you can't see is that the servo arm is raked forward to provide some off-set and I have programmed the required amount of diff. on my Tx anyway. Also, the servos are supposed to be fitted to the supplied plastic covers as standard, so if all the kit parts are used it will be as you say.
See post # 61 for my amendment to Hanna's name.

Suirendoujin, that's a great idea about painting the linkage, I just wonder why I didn't think of it myself. Still, that's what forums are good for, swapping ideas!

Ben D Wing · Nov 03, 2009, 02:25 PM

Now and again I have a flash of inspiration and today was one of those days!
The idea was to fit a shock absorbing landing skid as per full-size glider, but the problem was how to achieve this quickly and simply as the real thing is quite complex. Anyway, to cut a long story short I spent about 5 hours thinking about how to do it and just 40 minutes to cut out the parts and finish the job! I think the finished article looks fairly close to scale and was for me very quick to manufacture. I don't really want to reveal how I did it (we all need to keep a secret now and again

), but the component parts consist of 2 pieces of 1/16th birch ply, 1 small piece of 1/32nd birch ply, 4 countersunk self tapping screws and 1 piece of aerospace medium density foam (don't ask!) The foam is not only shock absorbing, but simulates the fabric covered sides of the full-size skid. It does add a little extra weight to the glider, but at least it's where it's needed, ie. up front!

Oct 29, 2009, 11:12 AM	#61
Ben D Wing Registered User Join Date: Dec 2006 Location: The Peak District Posts: 803	Firstly, humble apologies to all about the mis-spelling of Hanna's name, it should read, ''Hanna Reitsch''. The pilot figure is supposed to be a WW1 British pilot to 1/5th scale, but it looks more like a woman to my jaded eyes! It was a (not cheap!) purchase off ebay. The seller also does other scales of Assagai pilot busts....http://search.ebay.co.uk/_W0QQsassZh...opefulsQQhtZ-1 Here's a link that gives some scale detail....http://www.letmodel.cz/gallery-habicht.htm Last edited by Ben D Wing; Oct 29, 2009 at 01:31 PM.

Oct 29, 2009, 03:08 PM	#63
Ben D Wing Registered User Join Date: Dec 2006 Location: The Peak District Posts: 803	Wow! Thanks for those videos Joe, very much appreciated! Hanna was given the iron cross after a very bad crash in a 163 Komet which seriously injured her. The woman was a flying legend in her own right, well before her time and was the first female in the world to fly a jet powered plane. I think her political beliefs were pretty strong even in her latter years, but hey, no one's perfect. Anyway, back to the Habicht; I deliberated long and hard about how to fix the windshield and finally decided to do it similar to the current full-size red/white version. The Wasserkuppe museum version (blue/white) uses 4 alloy brackets instead, but IMHO the screw method is easier and more secure. The screws I used are too large for scale, but as this is only a semi scale model it doesn't really matter. Attached Thumbnails Current full-size glider's windshield and pilot. 34.0 KB · Views: 72 My poor attempt at a simple replication of the full-size glider. The screws are about 75% too large! 52.1 KB · Views: 64

Oct 31, 2009, 11:25 PM	#65
suirendoujin Registered User Join Date: Jan 2006 Location: The Far East Posts: 596	Progress report I got a little done on Saturday. I was hoping to extend the aileron and spoiler servo leads and be done with wing part of this build. Turns out I did not have any lead wire of appropriate gauge. Totally embarrassed, frustrated and disappointed. Well, good thing was, parts I had ordered to Hobby King has finally arrived. Took 20 days though. / I had tried to use the hinge Ben D Wing plans to use, but just could not figure it out. A 3 mm gap or clearing was necessary to make them work. If anybody does it successfully, do post here and educate me. So, used ordinary hinge for spoilers. Still 1 mm gap, but am happy with the results. Also epoxied a ply dam to the bottom of the nose and then epoxied some steel shots as nose weight. 400 to 500 g of weight in the nose. This looks like an impossible task. At the moment, I got only 250 g in there. Oh well. Also, I CA'd a small cover fabricated from a vac formed pill case to the front end of the tow release so steel shots and epox wont clog it. By cover I mean those plastic used to pack each pill on a sheet. Sorry, forgot to take any photos of this one. These pill cases also make nice head rest on small scale ships as well as head sets for larger pilot figures. Attached Thumbnails 2 mm balsa spacer CA'd to the wing side of the hinge. 75.5 KB · Views: 47 Two hinges CA'd onto the spoiler. 82.8 KB · Views: 41 Ta daH!! Had to sand the distal (ie. tail side) of the spoler to make it fit. 50.0 KB · Views: 65 350 g. I was hoping to get this much in nose below the NiCD tray. Gotta try harder. 69.7 KB · Views: 44 Can you make out the steel shots in there? Gotta double that amount. 79.0 KB · Views: 62

Nov 01, 2009, 03:37 PM	#66
Ben D Wing Registered User Join Date: Dec 2006 Location: The Peak District Posts: 803	Due to the postal strike in the UK, I doubt my HobbyKing hinges will be here any time soon, so I've devised a different way of hinging the airbrakes because I'm getting short on patience. I've simply used a 3/4" full width strip of Solartex, which is a heat shrink fabric covering material, and ironed it on the inside of the airbrake door. The instructions suggest clear tape on the outside, but I'm not really keen on the idea if I'm honest. I have also added a wooden frame on the inside of the airbrake cavity and this serves to ensure that the door sits at the correct level when shut. The supplied door control horns, wire pushrods and servo mounts are fit for purpose and actually fit and work very well. Just ensure that the two airbrake servos are mounted in the correct orientation otherwise the doors will work like ailerons, not good! Setting up of the machanism was a bit of a fiddle with the pushrods needing about 40% of their length trimming off, but eventually I got the system working well. Not much left to do now so I'm hoping to maiden this glider later on in the week, weather permitting. Attached Thumbnails Aileron servos are mounted on home made 1/8th ply bearer plates, instead of the supplied plastic covers, then wrapped in masking tape and fixed in place with an aerospace silicone adhesive, don't ask!! 36.3 KB · Views: 39 Solartex hinge installed. Supplied horn and pushrod can also be seen. 43.5 KB · Views: 56 Front framework is 3/16th x 1/8th balsa and helps secure hinge material. Rear frame is 1/8th sq. and ensures the door sits flush with the wing surface. EZ connectors are also supplied and work extremly well. 32.8 KB · Views: 74 Airbrake fully deployed, but I doubt this much travel will be needed in flight. No mention of total travel is made in the instructions so it'll be case of suck it and see! 46.0 KB · Views: 54 All done, and the door shuts completel flush with with the wing surface. Sunburst design lines up nicely too! 45.6 KB · Views: 49

Nov 02, 2009, 08:17 AM	#67
Ben D Wing Registered User Join Date: Dec 2006 Location: The Peak District Posts: 803	A knock on the door today resulted in the arrival of 'Hanna', and it's a very well painted, sculpted and lightweight bust. A few deft cuts with a razor saw had the pilot fitting very snugly in the cockpit and to my eye it looks exactly correct for this type of glider. I have also reduced the size of the canopy screws by holding them in a pin vise and then grinding them down with a Dremel. They're not perfect, but do look a little bit better. The on/off switch is simply mounted inside the cockpit where it's easily accessible and doesn't spoil the looks of the airframe. I have decided to initialy only put 400g of ballast into the nose and I've achieved this by using heavyweight pest control air rifle slugs. I lined the inside of the nose with aluminium foil, poured the slugs in and then drizzled a small amount of thin cyano over the whole lot. Once the model is complete I'll simply add more ballast if required and then permanently epoxy the whole mass in place. NOTE: If too much cyano is used the heat generated as it goes off could damage the GRP and paint, so please be careful if you use this method. The same goes for quick setting epoxy. Attached Thumbnails 'Hanna' looking ready for some aerobatics! 56.1 KB · Views: 46 Side profile of 1/5th scale pilot looks about perfect. 52.8 KB · Views: 43 JR on/off switch fits neatly into the front wall of the cockpit. 42.6 KB · Views: 51 400g of heavyweight air rifle slugs. 64.2 KB · Views: 45

Oct 29, 2009, 02:00 PM	#62
Joespeeder Registered User Join Date: Sep 2007 Location: Davison, MI Posts: 486	Thanks Ben D Wing, Cool a new source for pilots. It does look like a female. Here's a link to the post in my ME-163 thread that has links to a YouTube series on Hanna. http://www.rcgroups.com/forums/showp...2&postcount=11 Joe www.thecaterhamproject.com

Oct 30, 2009, 06:28 AM	#64
MooSey-UK Born Again Idiot Join Date: Jul 2007 Location: Warminster. Wiltshire. UK Posts: 268	I think that looks pretty good I was lucky enough to see Chris Williams 1/3rd scale Habicht at Whitesheet last week. Fantastic. This thread is softening my resolve not to hit the Buy it Now button!! Im looking forward to reading the flight tests. If Ming had just made the span bigger I could'nt resist! Im pondering one of these or a 4m ish scaley at the cheaper end of the market.

Nov 02, 2009, 09:48 AM	#68
suirendoujin Registered User Join Date: Jan 2006 Location: The Far East Posts: 596	Servo leads arrived today from Hobby King. So, can proceed once again. Ben D Wing, Ready for maiden, I suppose. Congratulations. Looking forward to your flight report. My current goal is to finish mine by Nov. 28.

Nov 02, 2009, 09:50 AM	#69
Ming Registered User Join Date: Jun 2002 Location: Hong Kong Posts: 2,621	I have only one special edition purple color! who like? Ming Lou

Nov 02, 2009, 10:06 AM	#70
micbu Registered User Join Date: Sep 2004 Posts: 23	Me! Michael

Nov 02, 2009, 11:25 AM	#71
Ben D Wing Registered User Join Date: Dec 2006 Location: The Peak District Posts: 803	[quote=suirendoujin;13485768]Servo leads arrived today from Hobby King. So, can proceed once again. Ben D Wing, Ready for maiden, I suppose. QUOTE] I won't be ready for the maiden at least untill the weekend as I'm working nightshift this week! My HobbyKing shipment has yet to arrive, but it's too late now as the brakes are already hinged. I forgot to mention the servo covers I made, so here are a couple of photos. They're made from 1/16th birch ply and covered in white film to match the wing colour. They have been lightly secured in place with spots of UHU Por so that they can be removed at a later date if required. Ming, a purple Habicht!? How, why? Attached Thumbnails Simple home made covers look a lot neater than the plastic (CMPro) ones provided, not to mention a lot lighter! 28.3 KB · Views: 44 Horn, clevises and threaded pushrod all came from the spares box. Those supplied don't look man enough for the job to me. 34.4 KB · Views: 43

Nov 02, 2009, 07:09 PM	#73
suirendoujin Registered User Join Date: Jan 2006 Location: The Far East Posts: 596	Ben D Wing, Then maybe, just maybe, I might beat you to the maiden?? I will be busy this week for sure, preparaing a big presentation at work. You should paint the aileron linkage white. Plasic model paint will do a nice job. Wipe it with alcohol first as a pseudo primer.

Nov 03, 2009, 05:47 AM	#74
Ben D Wing Registered User Join Date: Dec 2006 Location: The Peak District Posts: 803	AeroNut, I agree about the differential, but what you can't see is that the servo arm is raked forward to provide some off-set and I have programmed the required amount of diff. on my Tx anyway. Also, the servos are supposed to be fitted to the supplied plastic covers as standard, so if all the kit parts are used it will be as you say. See post # 61 for my amendment to Hanna's name. Suirendoujin, that's a great idea about painting the linkage, I just wonder why I didn't think of it myself. Still, that's what forums are good for, swapping ideas!

Nov 03, 2009, 02:25 PM	#75
Ben D Wing Registered User Join Date: Dec 2006 Location: The Peak District Posts: 803	Now and again I have a flash of inspiration and today was one of those days! The idea was to fit a shock absorbing landing skid as per full-size glider, but the problem was how to achieve this quickly and simply as the real thing is quite complex. Anyway, to cut a long story short I spent about 5 hours thinking about how to do it and just 40 minutes to cut out the parts and finish the job! I think the finished article looks fairly close to scale and was for me very quick to manufacture. I don't really want to reveal how I did it (we all need to keep a secret now and again), but the component parts consist of 2 pieces of 1/16th birch ply, 1 small piece of 1/32nd birch ply, 4 countersunk self tapping screws and 1 piece of aerospace medium density foam (don't ask!) The foam is not only shock absorbing, but simulates the fabric covered sides of the full-size skid. It does add a little extra weight to the glider, but at least it's where it's needed, ie. up front! Attached Thumbnails A very simple execution of a complex full-size structure! 47.6 KB · Views: 73 Last edited by Ben D Wing; Nov 04, 2009 at 08:03 AM.