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  #1  
Old 03-25-2016, 11:14 PM
Les Les is offline
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Default Bertha vs Baby Bertha

Can someone please answer a question for me?

Besides the length, are there any other differences between the Baby Bertha and the regular, full size Bertha?
I know they are both BT-60 based and both have 18mm motor mounts.

The fins appear to be the same shape but are they the same size?

Thanks
Les
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  #2  
Old 03-25-2016, 11:49 PM
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dlazarus6660 dlazarus6660 is offline
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Yes and Yes!

So there!
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  #3  
Old 03-25-2016, 11:52 PM
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dlazarus6660 dlazarus6660 is offline
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I built the Baby Bertha years ago. I lost it in a launch. I painted it baby blue and called it "Baby Blue Bertha" It was just a shorter BB.
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Old 03-26-2016, 12:00 AM
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I thought the Baby Bertha's fins were slightly smaller. If not, you are paying over $13 more basically the same kit, but with a longer body tube!

Seems like $24.99 for the Big Bertha is just a bit high considering the simplicity, and especially compared to other bigger and/or more detailed kits.
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Last edited by LeeR : 03-26-2016 at 12:23 AM.
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  #5  
Old 03-26-2016, 01:51 AM
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BEC BEC is offline
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The Baby's fins are a slightly different shape and are made from 3/32 inch thick balsa vs. the regular Bertha's 1/8 inch thick fin stock.

I'll try to take a comparison picture tomorrow and post....

But yes this is another place where Estes' current retail prices seem kind of silly.
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  #6  
Old 04-06-2016, 01:51 PM
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Solomoriah Solomoriah is offline
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Actually, some time back one of the members here posted an extensive comparison of the Bertha/Ranger family fins over the years. They've actually changed a couple of times. Given that, I think swapping an 18" piece of BT60 and calling it a (full) Bertha is quite acceptable (and a darn good deal to boot).
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  #7  
Old 04-06-2016, 03:33 PM
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Rich Holmes Rich Holmes is offline
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Here's a comparison I did.
Attached Thumbnails
Click image for larger version

Name:  bertha baby bertha ranger fins.jpg
Views: 107
Size:  168.2 KB  
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  #8  
Old 04-06-2016, 10:51 PM
SCooke123 SCooke123 is offline
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Thanks Rich! Nice comparison - really like the overlay.
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  #9  
Old 04-06-2016, 11:17 PM
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Solomoriah Solomoriah is offline
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THAT was the comparison I was thinking of, I'm sure! Thanks Rich!
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  #10  
Old 04-07-2016, 02:17 AM
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ghrocketman ghrocketman is offline
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Great comparison overlay dwg, Rich !
ThanX !
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