I will be ordering a 24/40 case from Hobbylinc soon, and while browsing the site I found this: http://www.hobbylinc.com/htm/aro/aro91295.htm Do I need one?
Thanks.
I will be ordering a 24/40 case from Hobbylinc soon, and while browsing the site I found this: http://www.hobbylinc.com/htm/aro/aro91295.htm Do I need one?
Thanks.
Not required, but sure makes things easier.
kj
Ditto that ... glad I got one.
+1. What they said. The motor hook cut-outs in the aft closures of hobbyline motors have sharp corners and edges that can be hard on the hands. Plus the aft closure for the 24/40 is unique for being very thin*, which can make it harder to grip. You won't need this all the time, but it's cheap and you'll be glad you have it when the need does come up. And it will.
*Upper right in the photo above.
Mark S. Kulka NAR 86134 L1, ASTRE 471, Adirondack Mtns., NYOpinions Unfettered by Logic • Advice Unsullied by Erudition • Rocketry Without Pity
In the forest no one can hear you order a grande caffè misto.
Warning: I brake for invisible squirrels
I would only use it to loosen the closures.
When I got my 24/40 case new, I hand tightened both the closures, then using an X-acto blade, made 'tick' marks on the closures and the case.
Now, when I assemble, I know the seal is good when all the 'tick' marks line up.
The first (fuzzy) pic is 'not quite tight', second and third are 'just right tight'
I have never had to use any tools to disassemble my 24/40 case.
If anything, I would deburr the sharp spots on the rear closure, and assemble by hand.
Just my 1 3/4![]()
Well, I think I'll pass on the wrench, for now at least. I have pretty small fingers, so I don't think it'll be too much trouble to assemble/disassemble by hand.
That's a good idea to put tick marks on the case. I might have to steal your idea, er, I mean, follow your example.![]()
I'd get the wrench. I put off getting one when I first got into reloads, then when I finally got one, I wished I'd gotten it in the beginning. Makes things MUCH easier. And it'll fit both 24/40 and 29/40-120 cases.
NAR 91107, Level 2
I think paint and I have an uneasy truce going.
I've been using the rag also, but it keeps getting caught in the threads and I have to loosen it again to clear them. Sharon can't quite get these closures tight enough with her grip, and since she is building her own reloads, I think I will be getting one with my next order from Hobbylinc.
Thanks Jim, I was going to ask about compatibility with larger cases, but you answered my question already.![]()
NAR 92675 L-2 Superstition Spacemodeling Society
I may be getting older, but I refuse to grow up.
Also considering what is spent on the case(s) the wrench is a nominal cost comparatively and works 100% of the time as opposed to hands, rags etc.
Get the wrench...
It is better to have a tool and not need it than to need it and can't find a vendor.
The only time I need the tool is for 24mm RMS reloads, for some reason they act like they are over sized and have to be snugged into the case.
Layne Pemberton NAR# 83083
Mad Scientist, Minion and Owner
PembertonTechnologies.com
P.O. Box 250760
North Little Rock AR, 72225
L1 on Pem-Tech Space Ark
pem_tech (at) Yahoo (dot) com
TRF (at) pembertontechnologies (dot) com
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Under Development: Marza as of 04/29/06, Ten-Ten (10-10) as of 03/01/07, LPR M2-Mars Challenger 04/17/07, Starship Achilles as of 07/30/07, Goonie Kraken as of 07/12/08 (Thanks to Jewel Barton), The Gorgon as of 02/12/2010, Sorta' Saturn VII Gemini Launch Vehicle as of 08/08, Lemon Aid as of 08/15/08, Arcturus as of 08/25/06, MPR Bonestell
as of 1/21/07, Orion Boom-Boom as of 07/01/08,Gorgon 2010
You are way cool if you have the cash for a nine dollar (Hobbylinc discount) wrench worth 2 bits max. All I can do at the launch is bitch and moan that I won't or can't spend the money to get one, then try to bum one off the high end Aerotech guys. Just look at all those scars on my hands trying to close up those 24mm bugger reloads with the back handle of an Xacto knife or pliers! All could be avoided if I would just give in to the high profit margin wrench - just like printer ink. But at least it gives me a chance to blast AT and yearn for even higher end and more expensive Cessaroni products to come. Until the gravy train arrives I am just stuck with greasy hands, an Xacto knife handle and lots of parts to assemble, but at least I can be a full-fledged cheapskate and complainer.
This is the tool that I use: http://www.amazon.com/Aircraft-Tool-.../dp/B005VRANUO
Of course, I had a couple in my tool box from when I worked in aerospace.![]()
Regards,
Bob B
NAR 29996
NHRC Member
Nartrek Silver
Awesome - these are going on my Xmas list. Boy, won't the AT fellers be jealous when I whip out this bad boy!
Never had one, never needed one. A cheap pair of work gloves (2 for a buck at the dollar store) has protected my hands just fine when tightening and loosening closures. I'm a cheap SOG.
Jeff Vegh
TRA# 03011
NAR# 92403
+1 on using your teeth. That's how real men do it.
NAR 92675 L-2 Superstition Spacemodeling Society
I may be getting older, but I refuse to grow up.
Mine is the old style square one they first developed. Works great. Saves the hands. Oh, yeah, got mine for free from an AT rep at the Hobby trade show years ago at Donald E Stevens Convention Center when NIRA did the make it take it booth. So, I vote for getting one. As with anything, use in moderation. Just because you have the wrench; it doesn't necessarily mean that you have to use all of your strength to tighten the case. Your hands will be happy you got one.
Adrian
Adrian Butler
jd2cylman@mchsidotcom
NAR 73787 L2
Tripoli 13524 L2
QCRS, Princeton, IL
At $9+ it is overpriced, but they are nice and make using the reload cases a lot easier on the hands. And don't forget it has multiple uses; you can use it to put the case together AND take it apart!
Zeus-cat
NAR# 92125 L1
Total Impulse for 2011: 1,729 N/s
Total Impulse for 2012: 1,689 N/s
Total Impulse for 2013: 795 N/s
A:6, B:5, C:19 D:15, E:4 F:0, G:0, H:1, I:0
Flights: 46
Humm think i'm going to have to buy the aircraft pliers! I can think of a hundred things I can and could have used that for.
TA
poor (adjective) When you have to much month at the end of your money.
"Patriotism is supporting your country all the time, and your government when it deserves it." ~ Mark Twain
http://lokiresearch.com Performance Under Pressure!
The AeroTech wrench fits all four of the hobbyline motor aft closures, as shown in the attached photo. (Clockwise starting with the upper left are the 18/20, the 24/40 (different color than the others because it's a Rouse-Tech version), the 29/40-120 and the 24/60 motors.) In contrast to a pair of pliers, The AT wrench has zero chance of gouging up or otherwise marring the surface of your closure.
Mark S. Kulka NAR 86134 L1, ASTRE 471, Adirondack Mtns., NYOpinions Unfettered by Logic • Advice Unsullied by Erudition • Rocketry Without Pity
In the forest no one can hear you order a grande caffè misto.
Warning: I brake for invisible squirrels
If I only plan on having one case size, is there any reason I couldn't use a metal rod or a flat piece of metal the same size as the slots in the aft closure?
The nozzle sticks out past the thrust ring, so it won't work. See here:
http://www.aerotech-rocketry.com/cus...39-9t_assy.pdf
2013 impulse burned: 5205.1 Ns
2013 impulse lined up to burn: ~56,445 Ns
Unstable by design
www.wooshrocketry.org NAR Sec. 558
WOOSH Rocketry (mostly) on YouTube - http://www.youtube.com/user/guytogo75?feature=mhee
Note that it won't fit over a G138 nozzle, if you choose to fly them (they're AWESOME) in a 29/40-120 case.
2013 impulse burned: 5205.1 Ns
2013 impulse lined up to burn: ~56,445 Ns