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-   -   Bertha vs Baby Bertha (http://www.oldrocketforum.com/showthread.php?t=15878)

Les 03-25-2016 10:14 PM

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

dlazarus6660 03-25-2016 10:49 PM

Yes and Yes!

So there! :rolleyes:

dlazarus6660 03-25-2016 10:52 PM

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.

LeeR 03-25-2016 11:00 PM

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.

BEC 03-26-2016 12:51 AM

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.

Solomoriah 04-06-2016 12:51 PM

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).

Rich Holmes 04-06-2016 02:33 PM

1 Attachment(s)
Here's a comparison I did.

SCooke123 04-06-2016 09:51 PM

Thanks Rich! Nice comparison - really like the overlay.

Solomoriah 04-06-2016 10:17 PM

THAT was the comparison I was thinking of, I'm sure! Thanks Rich!

ghrocketman 04-07-2016 01:17 AM

Great comparison overlay dwg, Rich !
ThanX !


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