Super Big Bertha on E's?

[Vance in AK]

Has anybody tried the Super BB on Estes E9s?
I'm getting ready to put mine together & was looking at the pile of E9s everyone says not to use in my 4"V2 & thought hmmmmm.
I'm sure someone has done this & was wondering how it flew.
Also, & forgive my ignorance here, but if I were to make the conversion, here's my plan. Please correct my mistakes.
I intend to use the motor spacer from my V2 to put the motor stop in so that the spacing will be for Es. I'll use the V2 adapter if I want to use Ds.
Now the big Question. Can I cut off the upper hook on the Motor retainer so the Es can go past it, or do I need to put in an "E" hook. The only accessories my local shop stocks for rockets are motors, so I would need to order the hook.
Thanks for putting up with my ignorance.
Vance in AK.

 

[Stymye]

Vance,
your on the right track ..just put the engine block in to fit the E motors..there is more than ample motor tube sticking out of the Super Big Bertha to simply tape the motor in..If your wanting the engine hook, either get an E engine hook or, modify the D engine hook by cutting off the tang or straightening it out ...If you modify the D engine hook tho, make sure its really attached well and won't loosen up later on

Personally, I think tape is more than efficient for the SBB.

 

[sandman]

The ideal current Estes kit for the E9 motor is the Big Daddy...they were made for each other!

The Super Big Bertha doesn't weigh much more.

sandman

 

[Stymye]

..I forgot ...My SBB is stock, and It flys VERY well on the E9

 

[Steve]

Originally posted by sandman
The ideal current Estes kit for the E9 motor is the Big Daddy...they were made for each other!

sandman

Would I have to mod my Big Daddy for E9's? Similar to above?


Stephen

 

[sandman]

Nothing special.

Just add an "E" engine hook.

Our own flying_siverado carries them.

Or make your own from the metal inserts inside of an old windshield wiperblade.

Just go to a service station (are there any of those left???) and ask for an old one out of the trash.

Ho, yeh, I always lengthen the shock cord a lot too!

sandman

 

[flying_silverad]

Vance...if you want, I can send you a free hook and motor tube.

 

[Vance in AK]

Flying Silverad, I really appreciate the offer & will take you up on it!
I'll make it up to you one of these days when I get around to ordering some nomex heat shields from you.
I'll start with the fins on this one & wait do the motor mount & body tube after I get the hook.

Thanks a million. You can definetly count me as a future customer.

The Address is,
Vance Wonser
P.O. Box 176
Kenai, AK. 99611

 

[astronboy]

Hi Gang, I launched my Super BB using an AT E15.... but I wasn't thinking and the 7 sec delay was too long. N/c ejected about 10 feet above ground, allowing the tube to really take a superb core sample. see below:

 

[astronboy]

and here is the sample revealed!!

 

[astronboy]

it would probably help if I attached the pic!!

 

[Tools R Us]

The ideal current Estes kit for the E9 motor is the Big Daddy...they were made for each other!

Got to disagree Sandman, the first rocket I built for the E9 was a Fat Boy ... They were made for each other! The Big Daddy was made for a G64 or two! That said, I am building one of each in 54 mm, may do a minimum diameter 3" Big Daddy!

 

[GoBang]

Originally posted by astronboy
Hi Gang, I launched my Super BB using an AT E15.... but I wasn't thinking and the 7 sec delay was too long. N/c ejected about 10 feet above ground, allowing the tube to really take a superb core sample. see below:

Ouch.

Myself, I think the plain old fashioned regular sized Big Bertha does pretty nicely on E9s providing the winds are calm and the chute is small. I will also echo the sentiment on the Big Daddy: it is the perfect E9 model. The extra extension of the motor mount into the body tube does mean less space for chute/wadding/shielding, however.

 

[SPONGE]

Here is a minimum diameter Bertha clone on a J something. When the LCO pushed the button on that one he didn't say "launch", he said "BANG!!", and then it was gone.

 

[n3tjm]

E9 is perfect for the Super Big Bertha. E15-7 shoulda worked.. probabily turned out to be a E15-10 or E15-13. You have to love Aerotech Bonus delays...

One time boy scouts came to a launch with a NCR Patriot, and needed a motor to fly it with. I had a G64-10W, but I thought 10 seconds is a bit long, so I trimed it down to approx 7 sec. 12 seconds after burnout, the chute ejected... gotta love it...

 

[gerbs4me]

Awesome pic sponge

 

[Prowler901]

Originally posted by astronboy
Hi Gang, I launched my Super BB using an AT E15.... but I wasn't thinking and the 7 sec delay was too long. N/c ejected about 10 feet above ground, allowing the tube to really take a superb core sample. see below:

Boy, that was a sad one to see. She went up real straight and true... only to come down real straight and true...

Did you ever have that core sample analyzed

Regards,
Todd