- Posts
- 15,048
- Likes
- 24,020
JB Champion and Speedmaster (Fit)(Updates)
- Posts
- 3,769
- Likes
- 8,552
- Posts
- 15,048
- Likes
- 24,020
cicindela
··Steve @ ΩF
- Posts
- 7,938
- Likes
- 57,337
TexOmega
·They gotta make ‘em first, maybe??😲
- Posts
- 2,044
- Likes
- 10,613
TLIGuy
·There were indeed longer versions out there that I was unfamiliar with at the time. If I had to make an educated guess I would say that these longer bracelets were the ones used during the two Mercury flights as well as Gemini 3 on the suit exterior prior to the adoption of the Velcro strap. I think only the longer ones would accommodate the diameter of the glove.
I'm glad this thread has bumped up to the top. This seems like a good time to amend my above comment about the possible use of a longer JB Champion bracelet.
In doing a bit of research on the Gordon Cooper watch along with the JB Champion bracelet that is installed on it, it appears that both of the JB Champions he wore on his Mercury mission were surgically lengthened.
Thanks to @SpeedyPhill and some of his scanned images I noticed an odd looking line running across the bracelet about 3/4" below the end piece. In comparing the bracelet stored at the NASM and the scanned images I can now see where the additional length was added to Cooper's Bracelet.
Here is one of the images @SpeedyPhill posted of Cooper wearing two JB Champion bracelets with the odd lines running across the bracelets.
Here are two enlarged images showing the lines. The second one is credited to @SpeedyPhill as well.
Now looking closely at the original JB Champion bracelet in the possession of the NASM you can see where the length was added creating the line observed in the original image. While the inserted bracelet mesh is the same there must have been some difference on the finished surface that caused the light from above to reflect the light differently creating the appearance of a line across the surface.
The following images are credited to the NASM.
I know this is more than anyone needs to know about the Cooper JB Champion bracelet but there you have it.
Edited:
- Posts
- 3,615
- Likes
- 6,091
Vercingetorix
··Spam Risk1mm hole in bearing seems awful thin for a spring bar especially one with a gap. Also it seems to me you are trying to keep the outer edge of the end link from rubbing on the lug. Bronze bushing or o - ring seems to me what you want. Roller bearing is to isolate outer race from inner race ie rotation along the length of the spring bar. For side to side isolation roller bearing seems useless.
- Posts
- 7,938
- Likes
- 57,337
TexOmega
·Real World experiment in progress, hence my posting😁
O-ring: YES, GOOD!!
Bearing: INCONCLUSIVE for now
I am not a scientist but I slept well last night.
O-ring: YES, GOOD!!
Bearing: INCONCLUSIVE for now
I am not a scientist but I slept well last night.
- Posts
- 27,683
- Likes
- 70,355
Archer
··Omega Qualified Watchmaker1mm hole in bearing seems awful thin for a spring bar especially one with a gap. Also it seems to me you are trying to keep the outer edge of the end link from rubbing on the lug. Bronze bushing or o - ring seems to me what you want. Roller bearing is to isolate outer race from inner race ie rotation along the length of the spring bar. For side to side isolation roller bearing seems useless.
Bearings come in different configurations for different applications. They can be made to handle radial loads (as you are assuming) or thrust loads, or as most do a combination of the two.
The bearings shown in this thread are ball bearings, not roller bearings, but your concern is valid - these will take some thrust loads but are meant primarily for radial loads, and for keeping the parts from rubbing on each other I don't think will be a good solution personally.
A thrust roller bearing is more suitable, like this:
But a tapered roller bearing could work also:
Now I'm off to sooth the trauma from seeing photos of, and talking about bearings...painful experience after working for a company that made bearings for a couple of decades.
Not sure they make thrust roller bearings small enough, and I know the company I worked for didn't make tapered roller bearings small enough for this. Made some you could walk through the cone (inner race) but nothing that small. We did buy up a company that made tiny ball bearings - I used to keep this one in my wallet to show people - ball point pen added for scale:
Cheers, Al
- Posts
- 7,938
- Likes
- 57,337
TexOmega
·So, O- rings reign.
- Posts
- 3,769
- Likes
- 8,552
- Posts
- 15,048
- Likes
- 24,020
cicindela
··Steve @ ΩF1mm hole in bearing seems awful thin for a spring bar especially one with a gap. Also it seems to me you are trying to keep the outer edge of the end link from rubbing on the lug. Bronze bushing or o - ring seems to me what you want. Roller bearing is to isolate outer race from inner race ie rotation along the length of the spring bar. For side to side isolation roller bearing seems useless.
- Posts
- 3,769
- Likes
- 8,552
blubarb
··I might rise, but I refuse to shine.Like those. 👍
Just ordered the M2 of these and with a little filing of the outer could work.
https://www.ebay.com.au/itm/M2-M20-...hash=item4b24da342c:m:mdfBfLtNYZvS_8YuCYpPQuQ
Edited:
- Posts
- 15,048
- Likes
- 24,020
cicindela
··Steve @ ΩFLike those. 👍
Just ordered the M2 of these and with a little filing of the outer could work.
https://www.ebay.com.au/itm/M2-M20-...hash=item4b24da342c:m:mdfBfLtNYZvS_8YuCYpPQuQ
- Posts
- 3,615
- Likes
- 6,091
Vercingetorix
··Spam RiskI bought several years ago on a bunch of Omega, parts new old stock constellation cases,
bracelets, spring bars and washers. I have always thought that these washers were for the exact purpose being discussed in this thread if anybody wants them pay for postage and they are yours .
- Posts
- 3,769
- Likes
- 8,552
blubarb
··I might rise, but I refuse to shine.I bought several years ago on a bunch of Omega, parts new old stock constellation cases,bracelets, spring bars and washers. I have always thought that these washers were for the exact purpose being discussed in this thread if anybody wants them pay for postage and they are yours .
🙄 might as well. PMd you.
- Posts
- 3,615
- Likes
- 6,091
Vercingetorix
··Spam Risk🙄 might as well. PMd you.
- Posts
- 3,769
- Likes
- 8,552
blubarb
··I might rise, but I refuse to shine.Unsold - cost of shipping to Australia didn't excite me 🙁 so up for grabs again.
Thanks Vercingetorix for the generous attempt though. Much appreciated.
Thanks Vercingetorix for the generous attempt though. Much appreciated.
- Posts
- 3,769
- Likes
- 8,552
blubarb
··I might rise, but I refuse to shine.And arrived
- Posts
- 6,245
- Likes
- 11,565
SpeedyPhill
·any result yet ?
- Posts
- 3,769
- Likes
- 8,552
blubarb
··I might rise, but I refuse to shine.any result yet ?
Onto it tomorrow downunder time. but on first glance looks good. Certainly wont stand out like the proverbial dog's spheres as the black rubber seals do.
