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Photos of a messy workshop...

Squeezing a Skywriter in between other builds...

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Chris Barlow25/01/2017 21:43:40
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1904 forum posts
1308 photos

With my A-10 in the sign writing shop (read dining room table) and my TN electric Bronco stalled waiting for more 1/16th balsa I finally made a start on this years mass build.

Having met Lindsay several times and seeing the models he comes up with I was quite pleased when Skywriter was chosen for this years build and although I don't particularly need another vintage style bipe I do have space for an small aerobatic electric one.

So the plan is a little tweak to the wing section, strong foam core wings and a bit of lightening at the tail end to avoid any additional nose weight and we're away.

I started on Sunday with the fuselage, cutting out the sides and doublers and laminating them together. Whilst the glue was drying I cut the forward formers and stuck the fin/rudder together over the plan, leaving to dry over night.

Monday night these were peeled off the bench and the tail plane was glued up over the plan. I used slightly smaller widths for the tail plane peices, 19mm wide IIRC. Final task for the evening was to cut and glue some 1/4 sq longerons to the inside of the fuselage sides.

Tuesday evening I was lazy and watched some you tube and fell asleep!

Tonight having just received some electrical goodies from HK I was able to position and fit captive nuts for the motor and test the position of F2 before chucking the lot into the fuselage jig with some aliphatic. Amazingly it all landed like this!

20170125_205125.jpg

(the tail surfaces are there because I'm impatient)

Captive nuts for the motor. I really don't like fixing the crucifixes with plain wood screws!

20170125_205138.jpg

This is where the tail is up too. Still need to cobble some elevators together.

20170125_205206.jpg

And finally the power plant.

20170125_205245.jpg

That's where I'm up to right now. Later I be back on it to pull the tail of the fuse together glue up an elevator.

john stones 125/01/2017 21:53:04
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11152 forum posts
1503 photos

What's the powerplant n how many cell ?

Chris Barlow25/01/2017 21:58:12
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1904 forum posts
1308 photos

Umm, Cheapest I could find on HK. laugh

Seriously though, it's a Turnigy Aerodrive 3542 1000kv (max 625w I think) with a 65A ESC to tame it. I'm planning to run it on either 3000mah 3s or 4800mah 3s depending on current draw and balance requirements. Propped to draw around 450 - 500w.

Should keep things cool that way I hope?

john stones 125/01/2017 22:27:12
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11152 forum posts
1503 photos

What you skinning the wings with ....balsa ?

John

Chris Barlow25/01/2017 22:32:30
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1904 forum posts
1308 photos

I treated myself to a few sheets of Obeche! Not cheap but much stronger.

I intend to practice making the Bronco and Skywriter wings (3 in total) before attempting a 3m U-2 PSS wing so plenty of hot wire cutting and vacuum bag laminating to try!

john stones 125/01/2017 22:36:00
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11152 forum posts
1503 photos

Can't fault that..practice makes perfect wink

Chris Barlow25/01/2017 22:44:34
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1904 forum posts
1308 photos
Posted by john stones 1 on 25/01/2017 22:36:00:

Can't fault that..practice makes perfect wink

...or a lot of scrap! laugh

Low pass Pete26/01/2017 06:46:51
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245 forum posts
130 photos

HI John

Welcome to the 2017 MB. Will follow your build with interest.

Cheers

Peter

Lucas Hofman26/01/2017 09:47:52
620 forum posts
334 photos
Posted by Chris Barlow on 25/01/2017 21:58:12:

Umm, Cheapest I could find on HK. laugh

Seriously though, it's a Turnigy Aerodrive 3542 1000kv (max 625w I think) with a 65A ESC to tame it. I'm planning to run it on either 3000mah 3s or 4800mah 3s depending on current draw and balance requirements. Propped to draw around 450 - 500w.

Should keep things cool that way I hope?

Turnigy Aerodrive and Turnigy AE ESC's play well together in my experience.

625 on 3S means max. 56A, so you motor should burn before the ESC does.

Whether things stay cool depends on the propeller you mount. But if you set this up to with a 13x8 it will draw around 450W (safe).

Should work,

Lucas

McG 696926/01/2017 11:19:11
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3019 forum posts
1143 photos

Following with interest too, Chris.

Hope you will give us a lot of info regarding your foam veneering & vacuum bagging when the time comes.

Cheers

Chris

David Davis26/01/2017 11:48:37
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3585 forum posts
655 photos

That's not a messy workshop, this is!

modelling room before (small).jpg

trebor26/01/2017 12:22:08
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1926 forum posts
216 photos

Beat this,

img_2508.jpg

Tony Bennett26/01/2017 12:40:09
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5081 forum posts
129 photos

them is tidy them is.cheeky

this is a messy workshop.wink

not proud of it either, needs a good clear out when we get some better weather.

Tony B

trebor26/01/2017 12:50:15
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1926 forum posts
216 photos

Mine is getting on top of me ( literally )  Its nice and cosy though, I sit and look at it. laugh

Edited By trebor on 26/01/2017 12:50:43

Don Fry26/01/2017 13:09:05
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4557 forum posts
54 photos

This is a mess. And there a viper hibernating in there. And this is the best view.image.jpg

iqon26/01/2017 13:19:51
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1480 forum posts
239 photos

Thats not messy, you still have standing roomblush

Martian26/01/2017 14:39:28
2380 forum posts
1121 photos

I'm not even going to try to compete !

Chris Barlow27/01/2017 01:08:16
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1904 forum posts
1308 photos

A bit more done last night and tonight. I haven't used formers F5 to F9 instead electing to use 1/4 sq spreaders across the fuselage instead. Whilst still in the jig the rear sides were pulled in over the spreaders and the fin post scribed and glued. I cut some 1/8 balsa sheet to match the curves over the unused formers and very carefully cut the slots for the stringers. These were then glued to the top of the spreaders in the original former positions.

Tonight I have fitted all the stringers down the sides and over the 1/8th formers, carefully filing any slots that were a bit tight. That little task has taken the best part of 2 hours and the fuselage now looks more like a porqupine!

20170127_004143.jpg

I've also fitted the 1/4 balsa triangle under the chin of the nose. I still have to sort out the wing mounting plate and dowel former, battery cradle and some more 1/4 sq uprights down the fuselage to stop the sides from cupping.

Rich too27/01/2017 13:11:35
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3057 forum posts
1070 photos
Posted by Donald Fry on 26/01/2017 13:09:05:

This is a mess. And there a viper hibernating in there. And this is the best view.image.jpg

yes brilliant, that's worse than my daughters bedroom!!! laugh

extra slim27/01/2017 14:15:29
465 forum posts
48 photos

and the winner is..... my old mans!!.. still... I almost never have to order anything, it is typically found in here, and also, at night, space is made to house his nice BMW!..

garage.jpg

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