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Search: Posts Made By: Rktman
Forum: Rocket Boosted Gliders 06-08-2019, 04:45 PM
Replies: 6
Views: 693
Posted By Rktman
As as an old BAR who's become fascinated with...

As as an old BAR who's become fascinated with gliders, I was hoping you'd share some of foam glider plans if you had them, and your build and design techniques/tips. I'd enjoy resurrecting some of...
Forum: Building Techniques 05-28-2019, 05:29 PM
Replies: 13
Views: 634
Posted By Rktman
Much thanks Bruce!

Much thanks Bruce!
Forum: Building Techniques 05-28-2019, 08:42 AM
Replies: 13
Views: 634
Posted By Rktman
BEC is correct, it's a Centuri #20 from eRockets,...

BEC is correct, it's a Centuri #20 from eRockets, 2.042" OD | 2.0" ID | 0.21" thickness. Motor tube is a #9 (basically a 24mm) 0.998" OD | 0.950" ID | 0.024" thickness. Centering ring: Semroc...
Forum: Building Techniques 05-27-2019, 08:54 AM
Replies: 13
Views: 634
Posted By Rktman
I believe you and Earl and Frognbuf are correct...

I believe you and Earl and Frognbuf are correct that it's unstable even though I assumed it was because it was modeled after a lot of tractor type rockets where the motor and weight is set far...
Forum: Building Techniques 05-27-2019, 08:22 AM
Replies: 13
Views: 634
Posted By Rktman
Yup, everything from a D12 to an AT E15. Same...

Yup, everything from a D12 to an AT E15. Same results every time.
Forum: Building Techniques 05-26-2019, 12:34 PM
Replies: 13
Views: 634
Posted By Rktman
A case of overstability?

Not sure which forum this belongs in, but this one looks like the most appropriate and the one most likely full of very knowledgeable builders. I'm trying to diagnose the problem with this oddroc...
Forum: Rocket Boosted Gliders 05-24-2019, 06:20 AM
Replies: 4
Views: 363
Posted By Rktman
Trimming weight tip

Ever get tired of having your trimming clay dry out and flake/chip off over time, even when smeared with CA? A more permanent solution is self-adhesive lead tape, a product that is used to adjust the...
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