Ye Olde Rocket Forum

Go Back   Ye Olde Rocket Forum > Work Bench > Scale & Sport Scale Rocketry
User Name
Password
Auctions Register FAQ Members List Calendar Today's Posts Search Mark Forums Read


Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 12-15-2017, 09:26 AM
GuyNoir's Avatar
GuyNoir GuyNoir is offline
NAR # 19250 - Life Member
 
Join Date: Sep 2008
Location: Woodstock, IL
Posts: 315
Default Sheri's Hot Rockets - Mercury Atlas

Looking for anyone here who may have built the Sheri's Hot Rockets Mercury Atlas.

I have a kit (a gift from my fellow NAR Trustees when I retired from the NAR Board) that I'm thinking about building this winter and flying at NARAM-60.

Any tips, hints, "gotchas", etc.?
__________________
A dark night in a city that knows how to keep its secrets. But high above the quiet streets on the 12th floor of the Acme Building, one man is still trying to find the answers to life's persistent questions. Guy Noir, Private Eye.
Reply With Quote
  #2  
Old 02-11-2018, 05:04 PM
tdracer tdracer is offline
Scale Modeler Extrodinare
 
Join Date: Feb 2018
Location: Everett, WA
Posts: 8
Default

It's been a while since I built mine, but I'll share what I remember.
Originally I was building it as an entry for Sport Scale at NARAM 52 - something I eventually abandoned as it became apparent there was no way I was going to be able to keep it below 3.3 pounds. Anyway to score some scale points I decided to make it a 3 engine cluster with 18mm outboard engines. This turned out to be a waste - added complexity and weight for a negligible performance improvement. And even with my struggles to keep the weight down, it's woefully underpowered on a 29mm G, and not a whole lot better on an H. If I build another I'd seriously consider making it a 38 mm mount (obviously will need nose ballast).
The only part of build I remember really struggling with was the 'side pod' extensions (above the Atlas outboard engines). They are made from Styrofoam, covered with thin sheet plastic and it's really had to get them smooth and symmetric so use extra care.
You'll want to fill the body tube seams otherwise they'll show through the chrome covering. I've built all of the SHR kits - it took some experimentation to get a finish on those crude tubes but what I ended up works pretty well: I take Elmer's wood filler, thin it very slightly with water, and rub it over the entire outside of the body tube. After it's dry, I sand it down (~180 grit) - be careful not to go too deep and get into the cardboard - then follow up with a coat of primer.
Hope that helps, if you have any specific questions just ask.
Reply With Quote
  #3  
Old 02-11-2018, 09:50 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: 3,317
Default

I always design kits with a main or host mount larger than "required" so either a single grain load can be used or a cluster. If he says 38mm minimum I suggest BT-70 (approx 54mm) so you can do a short 54mm, a mid-length 38mm, a long 29mm, or 3 24mm, probably over 120ns each.
__________________
Exemptions not regulations. Please support DOT treating slow burning solids as not subject to HMR. 2015 NAR President declines!
U.S. Rockets instaship. http://bit.ly/1aca7mA 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.
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump



All times are GMT -5. The time now is 07:38 PM.


Powered by: vBulletin Version 3.0.7
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Ye Olde Rocket Shoppe 1998-2018