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What have you been wrenching on lately?

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What have you been wrenching on lately?

Old 08-01-20, 04:06 PM
  #3401  
JacobLee
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Stumbled on a cool trick today removing the bearings from a hub. I thought Iíd fish a few balls out with my magnet, but they all grabbed on and came out in a clump. Sculpture!



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Old 08-01-20, 04:52 PM
  #3402  
merziac
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JacobLee

Ideally you don't want any magnetism in the balls, they can stick, not rotate properly and wear unevenly in the long run.
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Old 08-01-20, 05:52 PM
  #3403  
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Originally Posted by merziac View Post
JacobLee

Ideally you don't want any magnetism in the balls, they can stick, not rotate properly and wear unevenly in the long run.
Interesting! Okay, maybe not such a cool trick after all. Thanks for the correction!
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Old 08-01-20, 06:05 PM
  #3404  
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Originally Posted by JacobLee View Post
Interesting! Okay, maybe not such a cool trick after all. Thanks for the correction!
Well there is a lot of debate in general on this and it may be negligible on bikes but I don't chance it.
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Old 08-01-20, 06:56 PM
  #3405  
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Originally Posted by merziac View Post
Well there is a lot of debate in general on this and it may be negligible on bikes but I don't chance it.
Either way, itís interesting, and something I wouldnít have thought of in a million years. Unfortunately, Iíll have to worry about the hubs whenever I ride this bike! No I wonít. Yes I will. Eh.

In which circles does this get debated? Automotive? Aerospace?
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Old 08-01-20, 07:14 PM
  #3406  
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Originally Posted by JacobLee View Post
Either way, itís interesting, and something I wouldnít have thought of in a million years. Unfortunately, Iíll have to worry about the hubs whenever I ride this bike! No I wonít. Yes I will. Eh.

In which circles does this get debated? Automotive? Aerospace?
Not actually sure, one of the bearing sites that looked up today had a topic about motor bearing failure from it but they induce it so its a big problem for that.

You may have to dig for it and it actually doesn't come up here like I think it would.

I was schooled by a couple of old guys along the way but have had plenty along the way that thought otherwise but I'll go with the sage advice every time.

I did raise the question at a bearing supply house many years ago and they didn't think it was critical on bikes but admitted they weren't expert in that so....
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Old 08-02-20, 04:26 AM
  #3407  
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^^^^^ FYI, I use this idea too but use a pretty small and weak magnet. I have one cut from a refrigerator magnet - that weak rubber stuff. My theory: strong enough to pick up bearing balls but too weak to magnetize them. Very brief contact times too.

I could, but would not use cow magnets or speaker magnets. No need and, maybe, strong enough to 'do a mischief'.

I'm also particular about putting the bearings back in. I've made tweezers out of bamboo. They work nicely but are not magnetic. More tactile than plastic tweezers. Pick up the shiny clean balls and place them. No metal tweezers to snag n drag.

Last edited by Prowler; 08-02-20 at 04:31 AM.
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Old 08-02-20, 05:11 AM
  #3408  
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Finally getting around to the Wayne Evans built bike which was custom made for 3 times RAAM winner Bob Fourney. Beautiful bike but had some seriously chewed up paint from a chain drop or two. Local painter going to spot fix the issue and a few other ones in the blue part. So yesterday I tore it all down and cleaned the frame. I also finally removed the reflective tape he had on the back of the seat stays. Bob said he had this built in the mid 90's for Paris Brevet Paris.



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Old 08-02-20, 05:52 AM
  #3409  
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Originally Posted by merziac View Post
JacobLee

Ideally you don't want any magnetism in the balls, they can stick, not rotate properly and wear unevenly in the long run.
True.

I learned a lot by working in a ball bearing plant. When I rebuild a hub, I use ball-bearing tweezers and a demagnetizer. Aside from everything, demagged ball bearings just handle better, and a hub re-pack goes smoothly.
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Old 08-02-20, 12:13 PM
  #3410  
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Been working on a Miyata 112 I got for a winter trainer bike. The plan was always to clean it up do some maintenance and pass it along. It got the full tear down as I had nothing else going on. I like Miyata's and its my size and if it were a 912 I would find a way to keep it but its not so I am going to try and cash in on some COVID market craziness and pass it along. Three out of four Main bearings done so far


trainer duty December

Frame getting a coat of wax

Coming back together
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Old 08-02-20, 04:00 PM
  #3411  
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I swapped a 39t chainwheel out for a 42t one.

I wanted to to a few other things but I can’t seem to locate the parts
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Old 08-02-20, 05:23 PM
  #3412  
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Project 1, Remove the cup on my 11 speed Campy Chorus BB and crank and add a 0.7mm spacer. This moved the chainline out just a little and dramatically improved functionality due to me running a few things out of spec. 10 minutes

Project 2, remount mountain bike tire with boot. Sidewall gash so I glued a leather boot in place. I did such a good job it barely leaked air even before the sealant. With sealant, it seems great.
We'll see soon. 20 minutes

Project 3. Add water bottle cage mounts to the Spectrum. Cheap plastic crap really, I'm not impressed with the SKS system. I used zip ties instead of the Velcro and I used the Velcro on the frame pump. More secure and I didn't have to get new straps. 30 minutes because the SKS bottle cage system doesn't even match the threads of the bolts it came with.

Project. 4. Getting my vintage shoes to work with my vintage pedals. Not done and won't finish today. Weighing my options currently.
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Old 08-02-20, 08:36 PM
  #3413  
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Originally Posted by SurferRosa View Post
New purchase. '87 Trek 560EX...

Finally started on the frame. Removed the two long Campy seat tube decals <sadface> and the bike shop decal easily enough. The awful/cracked chainstay protector was more trouble. I kept using what I was using -- wd-40 and a razor blade -- and it finally gave way ... along with some of the clear coat. Oh, well. It looks sooo much better, and I can always apply another one.



For the life of me, I could not remove the balls from the mounted bb fixed cup. It's one of those of those "sealed" for your protection things that I've only seen on a couple low-level Schwinns. So I tried to remove the cup with a crescent wrench, and it was barely tight. Came right off. The spindle on that side is pitted, and so is the cup. So much for "sealed." The rust on the cup is pretty bad.

But all the ugly stuff is done, and everything is ready to build back up with all new stuff!

Last edited by SurferRosa; 08-02-20 at 10:44 PM.
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Old 08-03-20, 06:51 PM
  #3414  
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Well, I finally am getting around to finishing my 58 FI. I started to rebuild the fuel unit after a long hiatus and a lot of procrastination. In order to maintain the original finish instead of bead blasting the unit, I elected to have it tumbled with walnut and glass beads. When I received it, it was already cleaned off all the debris so it need only a little attention...(I blew everything out to clean it anyway).
I should have the distributor done shortly and then I'll start on the Dual Quads for my Nomad.

The before...Ugly!

After....Better Looking!

Best, Ben
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Old 08-04-20, 09:01 PM
  #3415  
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Originally Posted by Bianchigirll View Post
I swapped a 39t chainwheel out for a 42t one.

I wanted to to a few other things but I canít seem to locate the parts
Thatís coming up soon-ish. I have a 44t ring in my pannier, to replace a 48t. 👍

Today, I swapped off my old Suntour Power Thumbies, for these XT 7-speed thumbies (M732). Now I need to find, beg, borrow, or steal (not really) a proper screwdriver, to remove the old band-clamp (where the downtube shifters are), so I can put on a clamp-on cable stop. 🙄😉


Last edited by stardognine; 08-04-20 at 09:09 PM.
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Old 08-05-20, 05:43 PM
  #3416  
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installed some NOS Christophe straps (thanks again francophile Jason!!!), and good used toe clips onto the new MKS Sylvan Track pedals on my Bridgestone.

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