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  #1  
Old 06-01-2021, 07:50 PM
MarkB.'s Avatar
MarkB. MarkB. is offline
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Default Very Large Alpha

Comrades:

I thought I'd share a quick project with you: my Very Large Alpha. After buying a Mega Red Max and buying the parts for the new Big Red Max, I got to thinking what else could be easily upsized using genuine Estes parts on-line. So the body tubes are Pro Series 3" as is the coupler. Estes doesn't sell it in long enough lengths to do the Alpha without a coupler so I chose to put the coupler at the bottom and sand the ply rings to fit inside. The 3:1 nose cone is the Big Daddy cone. Fins are hand-cut 1/8 birch ply with 1/16 balsa skins on either side. The skins don't go through the wall, but the fins are glued to the 29mm motor tube. Rings are from JBassham on eBay.

The upscale is 3.074. There's some more clean-up and final fitting before I glue it all together, but I think you can see where it's headed.

First picture shows the whole thing mocked up next to my old Alpha.

Second picture shows the through-the-wall fins into the coupler with the locking ring.

Last picture shows the cap ring in place that will have triangle stock to further lock in the fins. The idea is to build it up to this point including the motor tube and then carefully add the long upper tube last.

This isn't a rush project, but I'll share more pictures as we go along.
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Last edited by MarkB. : 06-01-2021 at 10:56 PM.
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  #2  
Old 06-01-2021, 08:30 PM
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LeeR LeeR is offline
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Default

Looks great! Nice job on the fins!

I converted the Estes Panavia kit to a big Sky Hook. I went with my own basswood fins, hand cut.

I have a number of 3” tubes and Big Daddy nose cones. I think my next “classic upscale” might be the Astron Drifter.
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Last edited by LeeR : 06-02-2021 at 06:31 PM.
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  #3  
Old 06-01-2021, 09:46 PM
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Chas Russell Chas Russell is offline
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Really intriguing project, Mark. Have you seen James Duffy's youtube video on skinning fin frames with 1/64th plywood? Great video and would probably add some strength to those fins.
Looking forward to your build.

Chas
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  #4  
Old 06-01-2021, 10:38 PM
rocket.aero rocket.aero is offline
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Quote:
Originally Posted by MarkB.
I thought I'd share a quick project with you: my Very Large Alpha. After buying a Mega Red Max and buying the parts for the new Big Red Max, I got to thinking what else could be easily upsized using genuine Estes parts on-line.


Very, very cool. I contend again that this forum needs a "like" button.

The new DBRM is indeed a wonderful starting point for a wide variety of intriguing projects. There's an upscaled Citation Patriot approaching completion that shares the basic DNA from that kit.

James
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  #5  
Old 06-02-2021, 03:36 PM
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Ez2cDave Ez2cDave is offline
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Mark,

Will you be using ESTES BP motors or going APCP ?

Dave F.
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  #6  
Old 06-02-2021, 10:01 PM
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Who else was thinking about this?

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  #7  
Old 06-03-2021, 08:58 AM
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ghrocketman ghrocketman is offline
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I think we need both a "Like" button AND a "DISLIKE" button for posts here on YORF.
Without a DISLIKE button, I don't want a "Like" button. Need to have both or NONE.
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  #8  
Old 06-03-2021, 01:46 PM
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For us to get a like button, we would have to start paying $$$$$$$. New vBulletin or other forum software costs a chunk to have without annoying advertisements. I like the older simple format. I also like free stuff.
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  #9  
Old 06-03-2021, 08:34 PM
Ltvscout Ltvscout is offline
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Quote:
Originally Posted by rocket.aero
Very, very cool. I contend again that this forum needs a "like" button.

Unfortunately, this old circa 2005 software I'm using does not support that feature.
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