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Old Nov 07, 2002, 02:09 PM
etbadger is offline
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First scratch-build


Well, here is the progress so far on my first scratch-build. I'm guessing it will be ready to fly in a month or two (I'm slow).

60" wing span and 1 year of work so far.

Drive system should be 10 2400 sub-C's into a Kyosho Endoplasm in a custom built gearbox (had to learn how to use the milling machine & lathe... Must be the most expensive gearbox out there)

Outlines are based on plans by Adrian Paige, but the internals are a fair bit different.

Still need to mount the electronics (other than the embedded aileron servos) and lay-up the wheel-pants.

-eb
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Old Nov 07, 2002, 02:10 PM
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Old Nov 07, 2002, 02:33 PM
Paul Susbauer is offline
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Very nicely done, I can't wait to see her in full race config. Can you post a pic of your gearbox. I"m sure everyone would love to see it.

--Paul

www.oldschoolrc.com
Old Nov 07, 2002, 02:39 PM
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Well, here is a front view. I don't have a pic with me of the gearbox itself. I'll try to remember to take one tonight.

-eb
Old Nov 07, 2002, 03:51 PM
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Stunning! All the best with flying her.

You're in good company here - Keith Shaw, Adrian Page (though his prototypes are all glow powered), and Greg Gimlick spring to mind as those who've tamed this flying barrel.

I still haven't plucked up courage enough to electrocute the Page Aviation GeeBee Z kit, let alone the 60" R2

Good luck

Dereck
Old Nov 08, 2002, 12:11 AM
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Thanks,

Here are a couple pics of the gearbox I just took. It was my first try at making anything of significant substance on the mill, so it isn't so pretty, but I learned a bit, and it seems to run smoothly.

-eb
Old Nov 08, 2002, 12:12 AM
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And another view...
Old Nov 08, 2002, 12:19 AM
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I have been severly chastised for failing to mention that this was a joint project of my WIFE and I. She did a lot of the original work cutting out stringers, frames, ribs, etc., as well as helping plot out the masking for the paint scheme.

Now perhaps she will stop hitting me...

-eb
Old Nov 19, 2002, 12:57 AM
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Another week of cruddy weather, and we have decals, striping, cowl, and final painting done. Only thing left to do is make the wheel-pants.

Top right:
Old Nov 19, 2002, 12:59 AM
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And the left side view:
Old Nov 19, 2002, 11:11 PM
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Very nice.You have big cajones doing an r1/r2!
How many watts are you pulling and what do you plan to do about a prop? (pitch/dia?)
I hear the rep as a hard ship to fly is undeserved other than a high landing speed, IE: bring it in with some real grease!

Good Luck

Mark
Old Nov 20, 2002, 12:06 PM
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Hi Mark,

Computer predictions have it pulling about 450 watts static. I don't have a watt meter, so I can't verify this (current gear ratio of about 6.2:1).

The prop on currently is a 16x10 APC, though, if I can, I would also like to try out an 18x12 (don't have one yet) as I would like to have more of the prop outside of that fuselage.

Thanks,
-Erik
Old Nov 20, 2002, 02:58 PM
KOMET 44 is offline
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ERIK,you should buy a watt meter.BEST insurance one can have. What is the weight of the plane rite now?? .Good luck with the test flights.stefanP


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