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Author Topic: Bostang B51  (Read 8540 times)
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rgroener
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« Reply #50 on: April 28, 2012, 03:04:20 PM »

I am still hunting the minute barrier with my Bostang. This powerfull beast is fast and glides like a stone. But the glide you see in this movie is a crash. Tongue While getting close to the minute, the rear peg loosened and the whole rubber snapped to one big knot to the propeller hook. It ended in a spectacular dive...
http://s340.photobucket.com/albums/o351/rgroener/?action=view&current=Bostang_crash.mp4
The damage isn't big, I just have to reglue the wing to the fuselage. But first I take the chance and reinstall the pilot. As soon as the Bostang is ready again, the minute hunt will go on...

Tom, how's your Bostang. Did she already had some air under the wings?

Best regards Roman
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Sky9pilot
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« Reply #51 on: April 28, 2012, 04:58:45 PM »

Sorry to hear about the crash...she really got some altitude before the motor peg came loose looks like a minute is well within reach.  Hope she repairs easily for you. 

Weather hasn't cooperated yet...when it's not raining or storming...the wind is too strong...15 and couple days ago up to gust of 45 mph.

Looking for a nice calm day to get three birds into the air....

Tom
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Sky9pilot
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atesus
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« Reply #52 on: April 28, 2012, 07:23:49 PM »

Looked great until the peg came off. Glad to hear that required repairs are not substantial. To keep the aluminum motor peg in place I slip a thin slice of silicon fuel tubing over it, one on each side. Great design, hoping to build one someday. Thank you for sharing it with us.

--Ates
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Sky9pilot
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« Reply #53 on: April 28, 2012, 07:57:23 PM »

I agree with atesus.....

I found this on the net...thought it might make a wild Bostonian....

Tom
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Re: Bostang B51
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rgroener
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« Reply #54 on: April 29, 2012, 03:36:18 AM »

The Bostang is already repaired. Smiley

Ates, thanks for the tip with the silicon tube. I will try it.

Tom, hope that the wind calms down and you can go out and fly your fleet Grin
Best regards Roman
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Yak 52
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« Reply #55 on: April 29, 2012, 08:28:37 AM »

That was an awesome flight Roman! Did the motor break or the peg come loose?

It's a real performer mate  Cool
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rgroener
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« Reply #56 on: April 30, 2012, 01:49:04 AM »

The rear peg came loose. The rear peg was in the rubber knot at the prop hook. Fortunately there was nearly no big damage. But on the other hand, if a plane goes down straight from that height and there is no damage, it is definitely overbuilt Roll Eyes It would be good to loose some pounds Tongue

Best regards Roman
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rgroener
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« Reply #57 on: August 06, 2012, 02:50:32 PM »

Time for an other Bostang. Bostang #1 isn't anymore.... I just wanted to repair some minor things and at the end I smashed the whole thing and decided to build a new one... It was quite worn out after some broken rubber and some hard landings.
This time I will follow the plan and see how it works. I also hope to build it a bit lighter.....

Here it goes....

Best regards Roman
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Sky9pilot
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« Reply #58 on: August 13, 2012, 11:00:29 PM »

Alright Roman,

I look forward to following your progress.

Tom
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rgroener
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« Reply #59 on: August 14, 2012, 01:42:47 AM »

Pic from the weekend. The fuselage is nearly built up in the meantime. I try to save some weight and it seems to work. The prototype was very sturdy (had to be  Grin).
I realised that the fuselage is one inch longer than the prototype. I must have modified it Roll Eyes I am wondering if this change will have a negative effect to the appearance of the finished model. I liked the chubby short version... We will see... Tom, do you remember the plan version you built from?

Best regards Roman
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OZPAF
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« Reply #60 on: August 14, 2012, 04:51:01 AM »

It's got an interesting double decker construction Roman. Nice work.
John
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rgroener
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« Reply #61 on: August 14, 2012, 06:36:34 AM »

John, do you mean because of the two boxes in the fuselage?
It was necessary to add the sticks in the middle of the fuse to avoid bending the vertical sticks inwards.

Roman

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OZPAF
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« Reply #62 on: August 14, 2012, 07:08:39 PM »

Yes. I think its a good solution as it seems to me that it would be lighter than using larger verticals t take the compression loads.
I enjoy reading and looking at your builds and flying shots.
Happy flying
John
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rgroener
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« Reply #63 on: August 22, 2012, 09:26:50 AM »

Some slow progress. The new Bostang fuselage in comparison to the remains of the prototype. At the moment I like the shorter version more. Not sure anymore why I stretched the fuse Huh
Anyhow.... I will decide what to do when I see the finished new Bostang. Maybe the finished longer Version looks ok too. If not, I will shrink it to the original size.

Best regards Roman
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Sky9pilot
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« Reply #64 on: August 23, 2012, 02:58:14 PM »

I liked the chubby short version... We will see... Tom, do you remember the plan version you built from?
Best regards Roman

Roman,

We were discussing the build of the original. That's the plan I used.  When I built the fuselage sides and pulled the tail together it lost some length.  I mentioned this to you and I believe you lengthened the fuselage sides a bit to keep it at the Bostonian rules length.  I look forward to Bostang MkII.  It's a great plan and plane.

Tom
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Sky9pilot
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rgroener
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« Reply #65 on: August 24, 2012, 01:25:49 AM »

Tom, thanks, you are right. Let's see how the "long" Bostang looks like. If I dont like it, I will go back to the short version. Still have all the plan versions....

Roman
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rgroener
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« Reply #66 on: October 08, 2012, 01:53:06 PM »

In the meantime, the new Bostang is ready and the Pilot looks forward to the test flights.
To test fly a Bostang, it needs a very brave (or stupid) pilot Grin
Let's hope this one will go as well as the last.

Weight as seen without rubber is 15.5g. I can't remember the weight of the prototype.... Huh

Inflights pictures will follow as soon as I have them.

Best Regards Roman
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danmellor
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« Reply #67 on: October 08, 2012, 02:06:55 PM »

That's fantastic! Still recognisable as a Mustang and cute as Hell..

Cool!

Dan.
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Sky9pilot
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« Reply #68 on: October 09, 2012, 08:18:37 PM »

Whoo...Hooo....

Love the invasion stripes and checkerboard on the nose.  How'd you do the stripes? 

Tom
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Sky9pilot
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rgroener
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« Reply #69 on: October 10, 2012, 01:58:36 AM »

Thanks Dan and Tom
Black Esaki and chalked white Esaki strips. ( I first inteded to use double layer white Esaki, but after the first layer of the chalked Esaki it was white enough Smiley)

It's raining all the time... Also for the weekend no nice weather in sight. Trimflights will have to wait :'(

Best regards Roman
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RolandD6
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« Reply #70 on: October 10, 2012, 02:13:54 AM »

Nice model Roman

I wonder how the design would work reduced to half size.

Might try it sometime. My IAR 81 flys great but it is a sensitive little beast. A half size Bostang B51 looks like an interesting challenge.

Keep up the good work

Paul
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« Reply #71 on: October 10, 2012, 08:28:05 PM »

Looks great Roman - still a pugnacious little Mustang Grin. Nice finish.
John
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rgroener
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« Reply #72 on: November 25, 2012, 06:12:15 AM »

Some flying pictures of my Bostang #2. Trimming is nearly done. As the prototype, #2 also needs some power. The climbing is great. I hope you understand that I dont want to describe the gliding... Roll Eyes
Anyway, looking forward to have some more flight with it.

Roman
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OZPAF
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« Reply #73 on: November 25, 2012, 06:55:02 PM »

It looks like it is flying very well Roman. Have fun.
John
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Sky9pilot
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« Reply #74 on: November 26, 2012, 11:48:20 AM »

Outstanding Roman...

Thanks for the pics

Tom
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