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Old Carl Goldberg 1/2A Handle Rebuild

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Re: Old Carl Goldberg 1/2A Handle Rebuild

Post  944_Jim on Sat Dec 01, 2018 11:13 pm

Well, since we are comparing handles...my "I don't dare lose this one" bright orange RSM/Renger handle:

I'm quite fond of the changeable inserts and can feel the neutral position quite easilly due to the perceptible, but mild, exponential feedback (I prefer to say "multiplication," the change isn't exponential like working heavy math).
Orange so I see it easier when scanning after a flight session. I lost the first one the first time it was used, and left behind.
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Re: Old Carl Goldberg 1/2A Handle Rebuild

Post  getback on Sun Dec 02, 2018 6:01 am

Eric. Do you mind if I copy that thimble drome patch and make a decal out of it? I would like to put it under the wing of my JW Firebaby.
Shoot no i don't care have at it i got it from here anyway .
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Re: Old Carl Goldberg 1/2A Handle Rebuild

Post  roddie on Sun Dec 02, 2018 10:31 am

Hi Chancey! Nice work on the handles! What type of wood did you use.. and what was the thickness? I had thought about trying some aircraft plywood.. by laminating a few sheets together.. depending on the individual sheet-thickness. A total thickness of 3/8" (10-11mm) would probably be adequate for 1/2A size models. A thin-metal insert-strip with a choice of line-spacing would be a nice option.

I particularly like your non-bias/two finger-hole version.. and really want to try making one. I think there's room for a wider line-spacing or even two. That single 1-5/8" spacing is somewhat limited. If the handle turns-out to be real comfortable.. or one of your favorites; then why be limited to that one spacing?

An approximate 1:1 ratio can be obtained using this handle's OEM line-spacing with a Perfect-brand #233 (1/2A size) bellcrank in the model. (see the photo below)



That bellcrank is installed in one of my early designs.



I flew it with a much wider line-spacing at the handle (before knowing better). My first experience flying inverted was with this model.

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Re: Old Carl Goldberg 1/2A Handle Rebuild

Post  NEW222 on Sun Dec 02, 2018 11:34 am

Thanks roddie. They are both made from one layer of 1/8" Baltic Birch Plywood. I have made a couple others using the same wood and worked out fine. I honestly never thought of laminating a couple sheets together. But I just may try it if I have some free time. The other one I did like this, I used the same 1 layer of plywood then glued on a piece of 1/4" balsa on opposite sides then sanded to contour.
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Re: Old Carl Goldberg 1/2A Handle Rebuild

Post  rsv1cox on Sun Dec 02, 2018 12:32 pm

getback wrote:Eric. Do you mind if I copy that thimble drome patch and make a decal out of it? I would like to put it under the wing of my JW Firebaby.
Shoot no i don't care have at it i got it from here anyway .

Done Smile


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Re: Old Carl Goldberg 1/2A Handle Rebuild

Post  Dave P. on Sun Dec 02, 2018 4:37 pm

As long as we're talking about handles, does anyone know about the handle on the right?  Got it in a lot with a bunch of other stuff. I put the CG handle in for size reference.
Seems to be sized for a kid's hand.

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Re: Old Carl Goldberg 1/2A Handle Rebuild

Post  NEW222 on Sun Dec 02, 2018 4:44 pm

To me, it looks like a modified kite handle. Is there any markings or names on it?
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Re: Old Carl Goldberg 1/2A Handle Rebuild

Post  Dave P. on Sun Dec 02, 2018 4:48 pm

Got this one too in the same box.
It's warped and cracked, so it won't be used.  I just never saw it before.  It has "Specra Star" imbossed on the grip. Kite handle?

I was thinking that the first one might be a kite handle too.  Had Dacron line on it though.  No markings.

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Re: Old Carl Goldberg 1/2A Handle Rebuild

Post  NEW222 on Sun Dec 02, 2018 5:18 pm

Looks like kite string to me.
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