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Author Topic: Show Your Newest Creation  (Read 65696 times)
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OZPAF
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« Reply #1150 on: October 23, 2017, 03:21:18 AM »

Thanks Mike
John
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MKelly
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« Reply #1151 on: October 23, 2017, 06:49:40 AM »

Very, very nice Mike.  I may have missed it, but how did you do the transition between the red and silver tissue at the rear of the fuse?  I see the black stripe, but that stripe does not line up with the rear fuse former.  Right now I'm thinking magic.....................

dogone:  again, very nice work.  Anymore pics or construction details?

Thanks Don - the silver and red tissue joint was spliced together with dope prior to applying the tissue to the fuselage.  Same process was used to join the white-red-silver tissue on the wings.

Mike
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malc
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« Reply #1152 on: October 23, 2017, 07:33:41 AM »

Diels Engineering Tigercat, 25.5" span.  Weighs 66g without rubber.  Now looking for some really really tall and soft grass...

Mike - Thats fabulous, I followed the build on S&T and have bought the Diels plan as a result.

Malc.
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F F modeller
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« Reply #1153 on: October 23, 2017, 12:30:48 PM »

Mike,
The Tigercat looks superb  Smiley

Dogone,
Nice build and a lovely bit of sealing and smoothing.
*bad joke alert*
Reading your footnote, is that what is known as a Navy Seal?
........ sorry.
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Jack Plane
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« Reply #1154 on: November 08, 2017, 06:50:17 PM »

Andreason BA4B from Peck kit, with altered nose and wing-tips to match full-size subject.

First ever rubber Peanut, first test flights will be on pre-competition trimming afternoon this Friday in Nijmegen.

Weighs 14.3g plus, say, 2g rubber.

Jon  Smiley

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Re: Show Your Newest Creation
Re: Show Your Newest Creation
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Pete Fardell
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« Reply #1155 on: November 08, 2017, 07:06:01 PM »

Looks great, Jon. A really lovely little model. Look forward to seeing it in action shortly!
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F F modeller
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« Reply #1156 on: November 08, 2017, 07:06:38 PM »

Looks great Jon .... looks and sounds light too  Smiley
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Jack Plane
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« Reply #1157 on: November 08, 2017, 07:11:28 PM »

Cheers guys!  My head is spinning somewhat with fatigue  Shocked

By the way, that little mark on the right hand side of the engine cowling isn't an ink smear - its a small oil leak from the engine!  Grin
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abl
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« Reply #1158 on: November 09, 2017, 03:35:12 AM »

Jon, that looks great - completed in record time, too.

(and it's lighter than mine...)

rgds

A.
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rgroener
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« Reply #1159 on: November 09, 2017, 03:52:21 AM »

So cool, I am looking forward to see it (and you Grin) this weekend!
Congratulation for your speedy build.

Roman
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Monz
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« Reply #1160 on: November 09, 2017, 06:46:40 AM »

Great model Jon, very clean and tidy build. Good luck with it.
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OZPAF
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« Reply #1161 on: November 09, 2017, 07:08:35 AM »

Very nice - good luck with it.

John
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Jack Plane
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« Reply #1162 on: November 09, 2017, 10:31:27 AM »

Thanks so much all for the kind words.

My latest creation is actually - technically - a pair of cardboard boxes of dimensions bespoke to the boot of abl's car, which I rustled up very late last night after having finally finished the Yello Hippo.  They're rectangular in style and cardboard and packing-tape coloured, and contain lots of bubble-wrap.

Now off the big plane and currently on a double-decker train speeding across Dutch flatlands towards Nijmegen. I think it goes via Arnhem - which I assume they cleaned after making a big mess there for the 1977 film. Wide tree-lined canals and big barges fleet past....

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Konrad
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« Reply #1163 on: November 09, 2017, 10:36:32 AM »

Jon,
Very well done!
I have to ask,how do maintain such control of the tissue with these light structures? I don't see any added gussets in the corners.
Is there a link to the detailed process?

All the best,
Konrad
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Cut it twice and it's still too short!
Jack Plane
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« Reply #1164 on: November 09, 2017, 12:15:18 PM »

Hi Konrad

Thanks for your kind words.  I didn't do a build blog as I was very pushed for time, but my approach was as follows:

I used the Peck kit wood (average 10lbs/cu ft with some heavier/lighter), and used the stiffer stuff for the wing leading edge and spars, medium for longerons, and med-light for the tail structures.

The plan seemed a bit too economical with wing and fin/rudder gussets, so I added extra, especially at the rear of the root ribs, also at the front and insides of the centre-section

I departed from the kit wing tips design after making the wings, as my subject has the later curved tips. This involved knifing the old ones off and laminating the curves, which I felt then needed a gusset at each front LE join.

Covering was with Japanese Esaki, applied with glue-stick, fixed with thinned white glue.  The fuselage I just painted water on to shrink, the tail parts I misted and preshrunk the tissue taped onto a cardboard frame then covered with no more shrinking, and the wings I just misted and pinned down flat to dry.  Each part was then given a single coat of non-shrinking dope thinned 50%.

I always pin down using individual balsa spacers at each end of each rib (including wash-in/out as required).   For both water and dope drying I normally prefer to leave pinned overnight to give any stressed parts time to settle down, but I was under time pressure, so accelerated drying by putting the board in my hot water tank cupboard for a hour, then another hour  at normal room temperature. This seemed to work fine.

Hope to get some video footage of the bird in flight at this weekend's contest in Holland, which I'll post.

Cheers

Jon
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Konrad
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« Reply #1165 on: November 09, 2017, 12:30:51 PM »

Thank you.

I was in error about the gussets.

Again she really looks nice.

All the best,
Konrad
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Cut it twice and it's still too short!
Jack Plane
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« Reply #1166 on: November 10, 2017, 04:09:04 PM »

Trimming at Nijmegen late this afternoon... and the Yellow Hippo seems to fly fabulously... with a shed-load of extra downthrust shimmed in and an extra 0.5g nose-weight to stop the incessant stall/recovery cycle experienced at first.  Need to also up the rubber section from 0.109 thou to 0.125 (1/8th) and increase the loop length from 11" to 12 or so inches to max duration,  but close enough to get some initial qualifying flights in first thing tomorrow morning.

Jolly happy!
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dieterperiperi
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« Reply #1167 on: November 11, 2017, 09:43:02 AM »

Heres my Peerless model rearwin speedster i finished this week.
I increased the plan size too 21” wing. Kept everything but the wing the same.
Added more ribs and bracing to the wing.
Wanted to try and keep it light and manage 17.5grams including prop, no rubber

Balance is good and test flights in the lounge! Yes the lounge, into the curtain looks good.

Cant wait for a decent day.

Maybe tomorrow

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Crabby
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« Reply #1168 on: November 11, 2017, 10:04:55 AM »

Dieter my dihedral sensors are coming up zero on your Rearwin...are you by chance flat-winging it?
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dieterperiperi
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« Reply #1169 on: November 11, 2017, 05:07:50 PM »

Lol. Yes mate. Thats what the plan showed?? Might have to hang a small lead weight on a string under the fuse...to keep her rightside up....
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dieterperiperi
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« Reply #1170 on: November 11, 2017, 05:11:00 PM »

replace that string with idea with something solid Huh
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Jack Plane
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« Reply #1171 on: November 14, 2017, 02:41:54 AM »

So the Andreasson's best two competition flights at the weekend - once the 1/8" rubber was increased to a 17" loop (2.5x) to allow 1450 turns, plus some other tweaks to reduce the wasteful angle of bank - were 39 and 38 seconds!  As these were ROG a 10 second bonus was added to each, so 49 and 48 second flights were recorded, putting it's flying place just below half-way.  Smiley

Static took a hit (okay I came almost rock bottom, but to be fair everything else on the judging-table was simply outstanding), so my overall placing was in the lower quartile.  Nonetheless a huge first-peanut learning experience!

Can't do much about the static side of things (how much was down to my very basic level of making, covering and detail relative to the grown-ups, and how much to documentation faults I don't know), but a lovely model for ongoing play.  Will try a bigger prop for hand-launching, experiment with different pitches, make a torque-meter and blast-tube, destruction-test some rubber, etc.

Early trimming ROG flight on low-turns: https://photos.app.goo.gl/KrveCn3QfRUCMRVw2

Trimming flight on longer turns (but before fitting longer motor):  https://photos.app.goo.gl/LO3Hw9FmaMNp3uIB3
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OZPAF
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« Reply #1172 on: November 14, 2017, 02:56:25 AM »

Well done for a first effort - give yourself a pat on the back.

John
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danmellor
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« Reply #1173 on: November 14, 2017, 04:16:33 AM »

Very nice G-BEBS!

Cheers,

Dan.
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Jack Plane
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« Reply #1174 on: November 18, 2017, 02:10:14 PM »

Had a chance to play a little more today with G-BEBS, this time on a tight-ish turn in my local shoebox, but not flatter as the ceiling was feeling low and hungry!    Short of fitting a bigger (6") prop and hand-launching, final flight with the well broke-in but tired 1/8" motor wound to 100% of its maximum of 1700 turns was 45secs.  Add 10secs for ROG, that's getting happily closer of the 'magic minute':  https://photos.app.goo.gl/5aPzPBSCEzPIbrwj1

Huge fun this Peanut game!  Smiley
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