User avatar
By julz
#403166
I thought I Would bring this weird mounting spacer back into the limelight. :walterpeck:

Gb1 half moon spacer you say? what is this guy talking about! ... here are some example snapshots of it from the film.

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And last but not least... Egon doing the lift shuffle
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Quite a while ago I noticed Chris Bosh's build had a different approach to the centre mounting spacer...instead of a squishy half round ball, his looked more prominent and rectangle.

I contacted him about it and he kindly filled me in on some info he had regarding the halfmoon spacer as well as measurements to make one. Chris's spacer basicly consists of a 3/4 thick block of wood or resin shaped into a half moon.


The advantage of this method is its far easier to create yourself and is quite structurally sound. with 1 inch spacers and washers on the bottom mounting screws, the 3rd halfmoon spacer allows the back to sit quite straight to the Alice frame.

Is there anything to back this method up? Not really anything I can show, but I have seen some images of the murrary Minnesota pack from behind. Where the 3rd gb2 spacer connects to the motherboard is a unpainted block of raw aluminium the sameish size to chris's measurements. It looks like they installed this spacer then sprayed the motherboard black, and when it was removed it left that tell tail unpainted rectangle behind.

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Here are a few shots of it on my pack

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I am in no was dissing the squishy ball method as it works just fine, nor am I Saying that this is definitively accurate and set in stone.

However I personally believe chris's method to be a wee bit more accurate having seen the rear murray pack pic.

regardless it gives us yet again more things to discuss...Yey!

Special thanks to Chris for allowing me to share his measurements with the community :cool:
DmsdyMachn liked this
User avatar
By julz
#403180
curious - did you drill each hole in your speaker grille yourself? or what?
Haha

Yes I did :walterpeck: I made myself a little speaker grill printout and taped it to the motherboard and drilled away
User avatar
By julz
#403296
Thanks for chiming in guys... The aim of this topic was to bring more information to the table and give people more choices on what to do with that area on their packs.

Another little bit of supporting evidence ... spengler's pack also had paint missing in a square/rectangle shape around that mounting point. When the damn pack finally sells i'll post a picture of it.
User avatar
By julz
#403443
haha snap, I was just about to post this...

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The video is amazing and in high def.. I'm converting it now so we all have lots more reference images :)

By Bulletproof70
#403575
That's amazing! Just when you think you've discovered all of the detail on a pack, something like this comes along. Now I have to add some extra padding to my Alice frame and all sorts of extras... :)
User avatar
By blackeyespecialist88
#410897
I just made one out of aves epoxie sculpt. It was actually pretty easy. I molded it into the basic shape, and after it cured, just sanded down the edges to make it smooth. Thanks for this info! :D
User avatar
By onlyalad19
#414327
I was just in the process of making one of these spacers myself when it occurred to me that the measurements posted could be only slightly wrong. I believe that width should be 1 3/8" and not 1 3/4". Why? Well in order for it be a half circle you need to divide the length which is 2 3/4". Using a compass to get the circle correct would only change that measurement to 1 3/8". Also, using that incorrect 1 3/4" measurement, would increase the distance between the frame and mobo at the top. Since you use a 1" spacer with a washer at the bottom raises the mobo just about 1 1/8" - 1 1/4" from the frame, it would only make sense to make the spacing even since all the reference shows that it is.

Now do what you want, but I just though I would chime in here with my own experience making this part and the problem that I ran into while doing so. I will post pictures if anybody would like me to.
User avatar
By julz
#415150
Thanks for chiming in onlyalad19. Yes I think you are totally right. The measurements I got from Chris were rough mockup measurements at the time and definatly before all the new pictures came out. I thiink he may have tweaked his approach alittle looking at his latest build!
I have been meaning to update this thread for a while and Haven't found the time... :walterpeck:

Looking at reference a little more it looks like the halfmoon is a nice half circle as you pointed out,, so the pervious measurements are indeed too wide, but it also look like the end has been cut off which would form a more stable connection with the lc1 frame. With the extra width taken off at the end it brings it alot closer to 1 inch lower spacers on top of the washers, and making your back to alice frame more of a flush straight line.

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This image is the most side on image I could find showing the profile of the spacer.
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This one shows a slightly different angle and you can see the end of the halfmoon nearest the lc1 center support where it looks like the end has been cutoff/straightened

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Also another bit of info I picked up following Chri's builds is the inclusion of a groove on the front to allow for the outward facing grove the vintage lc1's have, so the moon spacer fits flush with the lc1 frame and not resting further back on the grove itself.
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The measurements I arrived at by scaling certain parts of the pack and comparing real world measurements such as the lc1 frame, although I haven't had a chance to test them out. The overall width of the halfmoon is open to change as you see fit to make a nice parallel angle between your motherboard and your lc1 frame.
DmsdyMachn, lannyjack liked this
User avatar
By julz
#415164
ha! Dramatic... Yes i probably made it a little pronounced than it needs to be, but It's just a 3d representation of a groove which you'd sand into the spacer with a file or something similar until the lc1 frame groove slots nicely into it.

By all means post some pics.. I'd love to see how yours turned out...
User avatar
By Alex Newborn
#415168
I just encountered the same problem with the earlier measurement making a spacer that was too long. It also changed the angle of the screw so that the lower screws no longer lined up. I sanded the middle down very similar to the truncated half-circle you arrived at, and also re-drilled the hole through the spacer at a slight angle to get the holes to line up better.

In hindsight, I should have made the spacer first, THEN drilled the hole in the ALICE frame, but the offset hole accomplishes the same end result.

Alex
User avatar
By onlyalad19
#415556
Okay guys, here are some pics I took at my friends house of my spacer. If you start with the updated measurements and then flatten the edge that will face against the frame, you should be just under 1 3/8". Since I have a vintage LC-1 frame, I had to put the little channel for the raised portion on the vertical bar so it could fit snug. Since some LC-1 frames and LC-2 frames have a different center bar, you would need to do whatever is needed to make it fit on yours. I will be painting my spacer soon, so I will update this thread with the spacer in place.

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User avatar
By GBfan4life88
#415963
I know the dimensions are a little contradictory to what has been posted, but it almost looks like they used a hockey puck, as they have a 3" diameter and are 1" wide. They are made of black rubber and are $3 or less at most sports stores. Just wanted to put his in as a possible cheap alternative to putting a lot of time into making a rounded wooden block.
User avatar
By julz
#416009
No that's not contradictory at all. Gex is testing the hocky puck theory currently, at it mostly looks very promising... it even has small rounded corners which the imprint on the spengler pack kinda looks like it might have?

if you can find a hocky puck that's kind of the same height or in the same ball park as 2.7 - 2.8 inches high... then id say it could be a very good candidate to what they actually used...

someone was telling me you can get different dimensions of puck?
By drjameshouse
#416018
someone was telling me you can get different dimensions of puck?
I have a small hockey puck about that size at home. After work I'll measure it and see what the exact size it is.
The video indicates that the spacer was painted with the mobo. Doesn't that contradict the idea that it was already black?
If I recall the person that told them a lot of the information was Ross....not necessarily someone who worked on them. At most I would say the spacer was on the motherboard before the mobo was painted. That doesn't mean the spacer wasn't black to begin with.

As nice as the wood spacer above looks, I don't think the prop makers would have taken that much time to cut out, flatten, and notch out spacer. Based on how the rest was created I think they probably just found something, drilled a hole in it, and used it. However that is simply my opinion. I am not an expert. And you have no reason to agree with my opinions.
User avatar
By julz
#416024
At most I would say the spacer was on the motherboard before the mobo was painted. That doesn't mean the spacer wasn't black to begin with.
I was about to say the same thing ;)

cutting a hockey puck in half drilling a hole through it isn't really a huge amount of effort for a prop maker to go through...

Gex is currently doing some pick measurements and experiments, I'll try and bug him to post them in here...

That would be great if you could measure it :cool: ... if its roughly in the same ball park, id say it could be the thing to use...

Gex's one might have been a bit to fat, so i'm not sure if you can get different thickness of puck?
User avatar
By GBfan4life88
#416028
Normally a pucks dimensions are 1" thick by 3" round. As per NHL guidelines. There may be leagues that use smaller sized pucks, or even some souviner pucks could be smaller, but I highly doubt it, as it would be cheaper just to stick to one size for the pucks manufacturer.
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