01-05-2018, 10:06 PM
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Contest, Sport, it's all good......
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Join Date: Jul 2008
Location: West of Minneapolis, MN
Posts: 760
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Quote:
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Originally Posted by blackshire
Thank you for coming out with this FAI-type heli-roc kit, John! This configuration is also popular in Europe
(and in FAI-CIAM spacemodeling competition countries elsewhere in the world), and it might even become the
"Renger Sky Slash of the heli-roc field," in its total impulse category.
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FAI requires the duration model body tube to be at least 40mm OD, which is why nearly all FAI S9 Copters use internal blades.
The most popular and pretty much definitive classic deployable external rotor copter is the Rotaroc series dating back to August 1975.
The basic design has been copied and cloned by many.
PDF file of plans: http://georgesrockets.com/GRP/CONTE...n/Rotaroc_A.pdf
Web page instructions on how to build a limited “kit” I made up for club members one year:
http://georgesrockets.com/GRP/CONTE.../Rotaroc-A.html
That said, I’m really glad to see this kit, and will get a couple to check out.
Here’s a video of some model testing last June. Second flight is a D Rotaroc rigged not to rotate much so as not to risk losing it
(was a boost structural test and deployment test flight).
Third flight was an E9 powered test of a G Rotaroc (3 x 36” blades, BT-55), which was flown at NARAM on G12 power (and won Team Div).
https://youtu.be/Bf3yjJKRBb8 |