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Old 11-05-2017, 01:02 AM
Initiator001's Avatar
Initiator001 Initiator001 is offline
Too Many Initiators is Never Enough
Join Date: Mar 2005
Location: San Diego, CA
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Default Semroc Maxi-Micron

A newly built Semroc Maxi-Micron model now graces my stable of flyable models.

The Maxi-Micron is an upscale of the Centuri Micron kit created by Carl/Semroc.
I liked the kits looks and size so I got one out of a storage box and built it.

The model is stock with the exception of adding a ejection gas baffle and longer shock cord (The stock shock cord was probably fine, I just like longer shock cords).
I also replaced the 1/8" launch lug with a 3/16" diameter lug. I felt a rocket this size could use a bit more stability at launch.

Weight/mass w/o motor is 3.2oz/92g. The instructions list a weight of 2.2 oz. I guess that baffle plus a lot of filler, primer and paint add up.

My thanks to Bernard Cawley for answering a few questions I had while building the kit. Bernie builds nice models and his Maxi-Micron flown at NSL 2013 inspired me in part to build one for myself.
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Old 11-05-2017, 01:10 AM
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BEC BEC is offline
Master Modeler
Join Date: Feb 2009
Location: Auburn, Washington
Posts: 2,123

Gee, thanks Bob.

The Maxi Micron Bob mentioned had some 18mm composite D10 and D21 flights at NSL 2013 and is now also wearing Carl's signature - so it's up on a high shelf alongside a Big Bertha signed by Vern at the same event.

I should build another....
Bernard Cawley
NAR 89040 L1
SAM 0061
AMA 42160
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Old 11-05-2017, 10:53 AM
stefanj stefanj is offline
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Join Date: Mar 2005
Location: Hillsboro, OR
Posts: 2,456

Mine is in the "repair or trash?" box after many good flights. It had a staging failure; I frequently flew it with the DeLeval-shaped finless booster stage.

It's a really nice demo rocket, single or two staged.
NAR #27085 - Oregon Rocketry - SAM
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Old 11-05-2017, 08:52 PM
Jerry Irvine's Avatar
Jerry Irvine Jerry Irvine is offline
Freeform rocketry advocate.
Join Date: Jan 2008
Location: Claremont, CA "The intellectual capitol of the world."-WSJ
Posts: 3,305

I looked it up. 1.84" 18mm. Fail. I would use 24mm.
Exemptions not regulations. Please support DOT treating slow burning solids as not subject to HMR. 2015 NAR President declines!
U.S. Rockets instaship. Please buy some rockets.
The O administration believed in tax, spend, borrow, fine, mandate, monologue. D voters will soon be very happy with the election outcome!
Model rocketry is as safe as safe can be defined in human existence. Bow and pray: GH Stine, Orville, Vern, Lee, Lonnie, Carl, etc. No, really.
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