# FlisKits: New body tube extravaganza!

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#### jflis

##### Well-Known Member
After reviewing order habits, we have noticed a lot of folks ordering all 3 of our engine tube sizes (BT-5-0175, BT-20-0275 & BT-50-0275). It happens quite often, sometimes buying two of them in one order then coming back for the third set...

so, we've just announced the BT-MIX-ET (Engine Tube), which containes 3 each of all 3 of these engine tubes. The price is $4.95 which is$0.30 (or about 6%) off of the price of the 3 packs individually purchased.

jim

#### Rocketjunkie

Shouldn't the BT50 be 3.75"? ( )

#### jflis

##### Well-Known Member
well, we *have* a BT-50-04 (4") that we could certainly use in place of the BT-50-0275

General question, would that be more desireable? the 4" tube *does* make it easier to use the Estes E engine, but the 2.75" is more "conventional"

jim

#### Sirius Rocketry

##### For the Serious Rocketeer
you are kinda like me in that the Estes E is rather unconventional in it's length, and there is a nice step into MPR with the Aerotech reloadables. We chose to stick with the standard 2.75 length, and not complicate things like with spacers and all. However if you did want to accomodate Estes E's then you have to think about those spacers........

Where do ya go????

Dave

#### Stymye

##### Well-Known Member
unconventional?
I build nearly every D rocket for E capability

from what I gather here, a great many others do too !

#### BobCox

##### Well-Known Member
Me too. I set up just about everything I build in 24mm to run on E9's and then use the 1" adapter when running on a D12 or C11.

#### jetra2

##### Well-Known Member
BAH!

Spacers...heresy!

Just use a 1/4" masking tape thrust ring!

Jason

#### jflis

##### Well-Known Member
Well, for the most part i tend to build conservative models (no wise cracks from the peanut gallery... ) and stability typically isn't an issue, so i build all of my 24mm models to take D motors and I just let the E motor hang out the back, if i'm going to use one. NOTE: Does NOT work with the A.C.M.E. Spitfire nor the Drake... I said "typically"

#### Sirius Rocketry

##### For the Serious Rocketeer
Originally posted by jflis
Well, for the most part i tend to build conservative models (no wise cracks from the peanut gallery... ) and stability typically isn't an issue, so i build all of my 24mm models to take D motors and I just let the E motor hang out the back, if i'm going to use one. NOTE: Does NOT work with the A.C.M.E. Spitfire nor the Drake... I said "typically"
Hang"em out the back!

Nothing a little noseweight can't fix!

#### JRThro

##### Well-Known Member
TRF Supporter
Originally posted by jflis
well, we *have* a BT-50-04 (4") that we could certainly use in place of the BT-50-0275

General question, would that be more desireable? the 4" tube *does* make it easier to use the Estes E engine, but the 2.75" is more "conventional"

jim
Jim, if you did use the BT-50-04 instead of the BT-50-0275, you'd have all bases covered, and those who wanted to could just cut off the extra 1.25" of tube for their C11 or D-powered rockets. You might have to raise the price of the BT-MIX-ET to cover the extra \$0.20 for the longer 4" tube, though.

Of course I have no idea what the relative numbers are of people who use the 4" tubes versus the 2.75" ones. Do past orders give any indication?

Just my 2 cents' worth, bearing in mind that I intend to never build anything with a motor bigger than 18 mm.