Upscale Deuce/Tres motor retention, also min diameter 29mm

wfcook · Mar 28, 2014

I know you're out there, I've seen the pictures. What kind of motor retention are you guys using on your upscale deuce/tres motors that, hopefully, doesn't look too silly or bulky?

What is typical for a 29mm minimum-diameter rocket?

I see the slimline retainers, but I can't tell what their OD is.

blackjack2564 · Mar 28, 2014

Friction fit.

Friction fit. Aluminum duct tape.

Handeman · Mar 29, 2014

I just used a wrap of masking tape over the motor tube and aft closure Worked great for the 29/40-120 cases in the deuce upscale.

Rocketjunkie · Mar 29, 2014

54 mm and down - snug (not tight) friction fit and tape over the MMT/motor joint. 98 mm - slit motor tube and hose clamp. These rockets have a bulkhead above the MMT so the fit only has to retain the cases against any jerks when recovery deploys.

AHansom · Mar 30, 2014

Cut some strips from a 1/16" aluminum sheet then bent to fit and anchored to threaded inserts. This rocket uses 38mm MM's and it looks like I'm on the bulkier side compared to the others but its not very heavy.

wfcook · Mar 31, 2014

AHansom said:
Cut some strips from a 1/16" aluminum sheet then bent to fit and anchored to threaded inserts. This rocket uses 38mm MM's and it looks like I'm on the bulkier side compared to the others but its not very heavy.

DING!DING!DING! We have a winner!

Thanks, that's the solution I arrived at this afternoon and I'm glad I'm not out to lunch. It's simple and even lighter than the commercial conventional retainers, and this rocket needs all the help it can get reducing weight aft.

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Upscale Deuce/Tres motor retention, also min diameter 29mm

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Upscale Deuce/Tres motor retention, also min diameter 29mm

Help Support The Rocketry Forum:

wfcook

Mayhem Rocketry, LLC

blackjack2564

Crazy Jim's Gone Banana's

Handeman

Well-Known Member

Rocketjunkie

Addicted to APCP

AHansom

Well-Known Member

wfcook

Mayhem Rocketry, LLC

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