evo cap 50 build discussion

evo cap 50 build discussion

PostPosted: Sun Jul 20, 2014 1:06 am

This thread is for builders of the EVO cap 50 to get questions answered by me (the designer) and the other builders.

Instructions are available here:

https://drive.google.com/file/d/0B2L8qe ... sp=sharing

Please feel free to chime in if you feel that anything needs changing in the instruction manual as it is my first shot at one and will need adjustment.
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Re: evo cap 50 build discussion

PostPosted: Sun Jul 20, 2014 1:10 am

Mo just sent me a message letting me know he cane up a hair short on 1/4 x 1/2 and 1/8 x 1/2. If anyone else has this issue please mention it so I can adjust the wood packs. There should be plenty enough material in the CNC sheets to cut a bit out to cover any slight shortages but either way I want to know about any issues that happen to more than one person.
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Re: evo cap 50 build discussion

PostPosted: Sun Jul 20, 2014 1:26 am

IIRC, the Evo540 prototype build was short quite a bit of 1/8x1/2. Then again, it wasn't really short as I was able to strip plenty from the CNC sheets. Oh, and maybe because I used all 1/8x1/2 where I could and skipped the 1/4x1/2 almost completely... Plenty strong with the 1/8, and if I would have controlled my glue a bit it might have saved a little weight.

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Re: evo cap 50 build discussion

PostPosted: Sun Jul 20, 2014 11:20 am

Yeah, I am 1 stick short on the 1/4 x 1/2 also, no biggy $1.39 at the lhs
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Re: evo cap 50 build discussion

PostPosted: Sun Jul 20, 2014 5:27 pm

Another small mod.
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Re: evo cap 50 build discussion

PostPosted: Sun Jul 20, 2014 5:32 pm

The notch at the fuse to motor-mount joint needed cutting/sanding on the 540 proto too...

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Re: evo cap 50 build discussion

PostPosted: Sun Jul 20, 2014 5:34 pm

Slight modification to the motor mount for nitro.

Rotated the 1/4 X1/2" so the motor bolts will go through solid hardwood and used all the hardwood in the front. Had to fill some with balsa... Didn't want to dig up more hardwood.

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Re: evo cap 50 build discussion

PostPosted: Sun Jul 20, 2014 5:47 pm

I can vouch for Mo's building prowess. :tu: Brilliant, Ian! :mrgreen:

We're talking PAR-level anal, here folks... :roll: :P ..and I do mean that with much respect. :nw:

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Re: evo cap 50 build discussion

PostPosted: Sun Jul 20, 2014 6:07 pm

Did someone say "anal"??? I didn't know Goofy was building an Evo!

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Re: evo cap 50 build discussion

PostPosted: Sun Jul 20, 2014 6:16 pm

Thanks J.

Goofy will have it ready to cover in about 18 months...
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Re: evo cap 50 build discussion

PostPosted: Sun Jul 20, 2014 6:20 pm

Motowncali wrote:Thanks J.

Goofy will have it ready to cover in about 18 months...


Damn that's cold. Fucking funny, but cold :P :rofl:
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Re: evo cap 50 build discussion

PostPosted: Sun Jul 20, 2014 6:45 pm

You need a few pieces of 1/2" wide 1/16" balsa. Look at all these strips. And this is just one left over sheet scrap.
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Re: evo cap 50 build discussion

PostPosted: Sun Jul 20, 2014 6:46 pm

Motowncali wrote:Thanks J.

Goofy will have it ready to cover in about 18 months...





18 months my ass, I ain't got that kind of focus.
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Re: evo cap 50 build discussion

PostPosted: Sun Jul 20, 2014 7:40 pm

Right side done, starting on the left.

Ian, if you think I need carbon in any other places, please let me know.
image.jpg


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Added carbon where the knife handle is

Just before glueing all the layers together, I added another .75" piece of carbon to this joint. Thought since we use the canopy area as a handle a lot of the time, I didn't want a slight twist to pop this joint.
Last edited by Motowncali on Wed Jul 23, 2014 9:29 am, edited 1 time in total.
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Re: evo cap 50 build discussion

PostPosted: Sun Jul 20, 2014 8:18 pm

Motowncali wrote:Right side done, starting on the left.

Ian, if you think I need carbon in any other places, please let me know.


Add some small ones on all of the "bottom to center" glue joints. I see four in that picture, two aft of the servo bays and two forward of them underneath the wing area. You have the really critical ones covered but its cheap insurance to add the remainder of them.
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Re: evo cap 50 build discussion

PostPosted: Sun Jul 20, 2014 8:44 pm

Haha, mirror images make quick work....

Added the four pieces of carbon per Ian.

Long piece in front of stab is 3.5"
Medium size pieces, 1.5"
All the rest are .75"

One other note if it throws any other builders off, I moved the elevator servo closer to the tube.
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Re: evo cap 50 build discussion

PostPosted: Sun Jul 20, 2014 9:11 pm

Perfect Mo! Other builders, use his picture as reference!

I hope that servo location works well for you. I located it to line up the elevator pushrod to the horn. Putting it that close may lead to an angle down. I'll be interested to see the result!
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Re: evo cap 50 build discussion

PostPosted: Wed Jul 23, 2014 9:25 am

Note:
Lay your skins down on the fuse core and mark where lightening holes are so glue doesn't ooz out...
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Re: evo cap 50 build discussion

PostPosted: Wed Jul 23, 2014 9:26 am

Got a good start on the wing last night. Fit of the ribs over all the spars in perfect, no sanding of the notches...
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Re: evo cap 50 build discussion

PostPosted: Wed Jul 23, 2014 9:57 am

Everyone take note of how Mo has put the carbon only on the inside of the spars at the joint during this portion of assembly. This is the correct way to build the wing. I suggest using epoxy and weight to laminate the inner carbon prior to assembly. The outer carbon strip should be installed after the spars are in the wing but before sheeting.
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