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Search: Posts Made By: WizardOfBoz
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03-02-24, 09:14 AM
Replies: 27
Views: 800
Posted By WizardOfBoz

Agree with Duragrouch - heat-treated 4130 (a...

Agree with Duragrouch - heat-treated 4130 (a chrome moly steel) has excellent properties. And rolled threads are stronger than cut, though I would guess that almost all axles are roll-threaded. So...
02-19-24, 07:38 AM
Replies: 13
Views: 803
Posted By WizardOfBoz

Geez, I've just been doing my commute every day. ...

Geez, I've just been doing my commute every day. I have no idea how all that rust happened.......
02-13-24, 08:56 AM
Replies: 13
Views: 803
Posted By WizardOfBoz

If pictures of great bikes are "bike porn", then...

If pictures of great bikes are "bike porn", then your picture is of bike BDSM. Ugly!
02-02-24, 07:45 PM
Replies: 25
Views: 1,094
Posted By WizardOfBoz

There's a first time for everything, Andrew. You...

There's a first time for everything, Andrew. You made my night!
02-02-24, 02:10 PM
Replies: 25
Views: 1,094
Posted By WizardOfBoz

As noted above your fork may already be dead and...

As noted above your fork may already be dead and you just don't know it. That said, if you don't know how to say "This is messed up, I'm not taking any chance and am buying a new fork" you could try...
02-01-24, 08:01 AM
Replies: 25
Views: 1,055
Posted By WizardOfBoz

Ah, yeah, that's it. I had a brain fart. Use...

Ah, yeah, that's it. I had a brain fart. Use ATF/Acetone 50/50. Thanks Cranky.
01-31-24, 08:08 PM
Replies: 25
Views: 1,055
Posted By WizardOfBoz

First, agree with those suggesting that the...

First, agree with those suggesting that the wrench is being used in the correct direction. L and R pedals have opposite threads. Use the wrench so that it is parallel and adjacent to the crank...
01-16-24, 12:48 PM
Replies: 15
Views: 565
Posted By WizardOfBoz

If you are truing 1-6 wheels / year, for general...

If you are truing 1-6 wheels / year, for general use, and the axle spacing is ok, this woud be fine.
If you are doing 10+ wheels a month and want +/- 0.002" runout, step up and spend upwards of...
01-13-24, 09:26 AM
Replies: 48
Views: 2,044
Posted By WizardOfBoz

Ah, Wisconsin. The memories of my newly shampooed...

Ah, Wisconsin. The memories of my newly shampooed hair freezing solid while I waited for the HS school bus. And of walking down the "Beta wind tunnel" (the short cul de sac that my lakefront college...
01-13-24, 09:21 AM
Replies: 48
Views: 2,044
Posted By WizardOfBoz

In re: suggestions to use SS or Ti screws. ...

In re: suggestions to use SS or Ti screws. Depending on the female thread material, one could get galling. To minimize problems I would use a good quality hardened and plated steel hex screw, with...
12-29-23, 01:06 PM
Replies: 37
Views: 1,350
Posted By WizardOfBoz

1) You might be able to run with only 4 bolts. ...

1) You might be able to run with only 4 bolts. Use antisieze! Torque, accounting for anti-sieze!
2) You might be able to drill out the hole, thread with a size larger, and use an insert (like...
12-21-23, 12:36 PM
Replies: 37
Views: 1,350
Posted By WizardOfBoz

Yes! All you need is ten 42lb bags of flour,...

Yes! All you need is ten 42lb bags of flour, ....., a custom 600 quart bowl, and about 420 baking pans and a VERY large oven. Plus the rewired electric service...

BTW, your strategy is a good...
12-19-23, 07:27 AM
Replies: 37
Views: 1,350
Posted By WizardOfBoz

I want one too, but putting in a three phase 575V...

I want one too, but putting in a three phase 575V 60 amp service is a big discouragement.
12-18-23, 02:38 PM
Replies: 37
Views: 1,350
Posted By WizardOfBoz

I think a mill (or milling machine) is called the...

I think a mill (or milling machine) is called the same in the UK. It's like a drill press on steroids. Very rigid. Has a table underneath the chuck that holds a tool (an endmill, a facing mill...
12-18-23, 07:19 AM
Replies: 37
Views: 1,350
Posted By WizardOfBoz

In machine shop work, the first step after Kroil...

In machine shop work, the first step after Kroil or PB Blaster is usually heat, using a rosebud tip an an oxyacetylene torch. Here, you could use a home depot propane tank and torch tip. But one...
12-07-23, 10:38 AM
Replies: 32
Views: 1,205
Posted By WizardOfBoz

If you can recognize the model number and year...

If you can recognize the model number and year (from the serial number), you sometimes can find the spec in old advertisements and catalogs.
There is a technical way to identify alloy composition...
12-07-23, 07:58 AM
Replies: 32
Views: 1,205
Posted By WizardOfBoz

You probably know this, but one thing to look for...

You probably know this, but one thing to look for would be a decal or sticker that says "Columbus" and "Doppia Spessore". If no sticker, I would suspect a unexceptional carbon steel.
...
12-06-23, 07:42 AM
Replies: 32
Views: 1,205
Posted By WizardOfBoz

Agree that the down tube failure mode is not...

Agree that the down tube failure mode is not buckling in the middle - this part is generally in tension. Any crash sufficient to buckle that tube means you have more problems than water bottle...
11-30-23, 10:09 AM
Replies: 43
Views: 1,532
Posted By WizardOfBoz

From a liability standpoint, if the stem is...

From a liability standpoint, if the stem is deformed ("plastic deformation") then I wouldn't recommend it.

But if I could get a shim in there so that the clamp did not completly close, I'd...
11-26-23, 09:06 AM
Replies: 40
Views: 1,900
Posted By WizardOfBoz

I had a friend in college who had a Schwinn...

I had a friend in college who had a Schwinn Varsity that he'd swapped aluminum wheels (rims and hubs) in for the steel. I think he'd also found a kit to replace the Ashtabula forged steel one-piece...
11-21-23, 07:22 AM
Replies: 14
Views: 643
Posted By WizardOfBoz

Thanks, maddog. Gee, I remember when it was...

Thanks, maddog.
Gee, I remember when it was 25.399 or some such. But the really hard change was when we gave up on cubits....
11-18-23, 07:26 PM
Replies: 14
Views: 643
Posted By WizardOfBoz

25.7 mm/inch x 1.125 in = 28.6mm

25.7 mm/inch x 1.125 in = 28.6mm
11-03-23, 07:09 AM
Replies: 12
Views: 891
Posted By WizardOfBoz

To explain... ...

To explain...
https://cimg0.ibsrv.net/gimg/bikeforums.net-vbulletin/1600x1600/3_3dadfe68_25fb_4a62_ad83_ee692342a964_1024x1024_2x_c5b69da541cf5388b13e88f7020ac1416f8be299.jpg
11-03-23, 07:06 AM
Replies: 12
Views: 891
Posted By WizardOfBoz

There was an ad, for GE I think, featuring...

There was an ad, for GE I think, featuring someone measuring an OD with calipers. Problem is, they were using the ID extensions. There's a lot of technical illiteracy out there.
10-17-23, 06:28 AM
Replies: 28
Views: 5,199
Posted By WizardOfBoz

Barge is what the shoe repair guys seem to use. ...

Barge is what the shoe repair guys seem to use.

Clean the separation well, pulling off any flakes of old adhesive. Let the cleaned area dry well. Apply a coat of Barge to both sides, ensuring...
10-09-23, 09:05 AM
Replies: 17
Views: 1,141
Posted By WizardOfBoz

As a guess, the optimial weight distribution...

As a guess, the optimial weight distribution between front and rear is often said said to be 45/55 to 33/66 (F/R). The higher tension plus more weight on the rear wheel ends up giving you...
10-01-23, 10:39 AM
Replies: 17
Views: 768
Posted By WizardOfBoz

Thanks, Mark. I owe any knowledge in the area to...

Thanks, Mark. I owe any knowledge in the area to a dated reference: "Carroll Smith's Nuts, Bolts, Fasteners and Plumbing Handbook", published 1990. Appreciate the update.
09-30-23, 02:44 PM
Replies: 17
Views: 768
Posted By WizardOfBoz

IIRC, "AN" bolts come only in inch designations. ...

IIRC, "AN" bolts come only in inch designations. But perhaps I'm mistaken.
09-20-23, 01:38 PM
Replies: 8
Views: 360
Posted By WizardOfBoz

But you have to also consider mounting the air...

But you have to also consider mounting the air tank....
https://cimg2.ibsrv.net/gimg/bikeforums.net-vbulletin/556x367/air_horn_4d85046c956b819aac497e968ae87b627a59e7a2.png
09-12-23, 05:51 AM
Replies: 36
Views: 13,884
Posted By WizardOfBoz

I think that you’re correct, but if you have a cf...

I think that you’re correct, but if you have a cf bike, epoxy is what’s holding your frame together. 100° C Is pretty hot, so if I was going the thermal route I’d use wax as suggested above. For my...
09-11-23, 12:34 PM
Replies: 87
Views: 3,224
Posted By WizardOfBoz

Yup, this is fair enough. Hence my suggestion to...

Yup, this is fair enough. Hence my suggestion to use a straightedge to compare the straightness of each stay. But I guess you could also say that the frame was hydroformed to be asymmetric, too....
09-11-23, 07:34 AM
Replies: 36
Views: 13,884
Posted By WizardOfBoz

This is exactly the right approach. Steel (not...

This is exactly the right approach.
Steel (not stainless - check to ensure that its magnetic, which is why you don't want aluminum in the hole). Small amount of CA glue. Hold it down using a...
09-11-23, 06:46 AM
Replies: 87
Views: 3,224
Posted By WizardOfBoz

;tldr I'm an engineer, like Harold74. I agree...

;tldr I'm an engineer, like Harold74. I agree with him. I'd not be confident about that stay. Then again, I weigh near 250lb (a bit less), so I should be more circumspect than the average bear.
...
09-05-23, 01:10 PM
Replies: 8
Views: 565
Posted By WizardOfBoz

The Fast-Tack MSDS shows that its now water-based...

The Fast-Tack MSDS shows that its now water-based with an acrylic adhesive.

The 3M Weatherstripping adhesive is still the good stuff: MEK and MIK and ethylbenzene and toluene! 3M™ Black Super...
09-05-23, 06:16 AM
Replies: 8
Views: 565
Posted By WizardOfBoz

Yeah, I can second TiHabanero's point. No fun...

Yeah, I can second TiHabanero's point. No fun when the tire rolls off the rim, sticks in the brake, and you go over the handlebars. Spitting out parts of 13 teeth, and having the doc scrape the dirt...
08-25-23, 07:47 AM
Replies: 32
Views: 2,057
Posted By WizardOfBoz

You've done a nice job of putting the thing...

You've done a nice job of putting the thing together. The cable comes in from the top and exits the pulley device and goes to the anchor bolt without bending the cable. Agree with maddog, you will...
08-20-23, 08:42 AM
Replies: 86
Views: 5,361
Posted By WizardOfBoz

Mark, this is interesting. Karl Pearson, the...

Mark, this is interesting. Karl Pearson, the statistician, held this view. Hence the inviolable catechism: "Data shows correlation, not causation". Which is tacitly ignored by anyone who actually...
08-14-23, 06:42 AM
Replies: 86
Views: 5,361
Posted By WizardOfBoz

Generally agree with squirtdad. You get what you...

Generally agree with squirtdad. You get what you pay for. The Park TS2.2 is a proven, durable, useful tool with very good support and the price these days is not unreasonable. I guess that the...
08-11-23, 07:14 AM
Replies: 12
Views: 426
Posted By WizardOfBoz

IIRC there was a really good glue, and that's the...

IIRC there was a really good glue, and that's the one no longer made. What brand was that?

One other advantage of tape is that you are sure to have the requisite amount of adhesive. Back when I...
08-11-23, 07:09 AM
Replies: 21
Views: 526
Posted By WizardOfBoz

The way I'm reading that diagram, the tip voltage...

The way I'm reading that diagram, the tip voltage is positive and the ground is negative. Starting from the tail-light, I see that the base is connected to negative and the tip is positive. The...
08-06-23, 02:02 PM
Replies: 43
Views: 2,216
Posted By WizardOfBoz

Mark, Maybe I was thinking of the cheap plastic...

Mark,
Maybe I was thinking of the cheap plastic anchors and you are aware of and had in mind beefier ones?
I do think rivet nuts of some brand are the purpose-designed product in this case.
If...
08-06-23, 10:32 AM
Replies: 43
Views: 2,216
Posted By WizardOfBoz

Arghhh! Please, no, no, no! The plastic anchors...

Arghhh! Please, no, no, no! The plastic anchors are weak and can wobble. You have a heavy load on the anchor. You have a sharp aluminum edge where you drilled and this can cut into plastic anchors....
08-06-23, 10:16 AM
Replies: 29
Views: 1,051
Posted By WizardOfBoz

Don't know where you are, but if you want to...

Don't know where you are, but if you want to preserve the freewheel and be able to remove it later, get the appropriate spline tool. In the US, you can order it and it appears the next day at your...
08-05-23, 12:03 PM
Replies: 30
Views: 1,412
Posted By WizardOfBoz

Agree with many above who point out that 1)...

Agree with many above who point out that
1) You easily do "touch-ups" using your bike frame.
2) You could even build a wheel from scratch and true in your frame but it's a bit unwieldy
3) If you...
08-03-23, 08:00 AM
Replies: 36
Views: 1,812
Posted By WizardOfBoz

Everyone else is wrong. The best (and only!) way...

Everyone else is wrong. The best (and only!) way to lubricate loose balls is using grease extracted from the musk glands from polka-dotted (no other!) ferrets. The best of this type of grease is...
07-31-23, 07:22 AM
Replies: 24
Views: 926
Posted By WizardOfBoz

Generally, if Andy makes an observation, I trust...

Generally, if Andy makes an observation, I trust it.

From StackExchange:
"A typical spoke has around 8-10 mm of threading on it, and you don't necessarily have to engage all of it with the...
07-29-23, 11:42 AM
Replies: 9
Views: 590
Posted By WizardOfBoz

I think that this is a good idea, but would...

I think that this is a good idea, but would insist (if I were you) that the dealer take pics and get the word from the mother ship. I suspect that 1) it is repairable in the sense that you can make...
07-23-23, 09:32 AM
Replies: 35
Views: 1,273
Posted By WizardOfBoz

You need to get an endorsement contract... ...

You need to get an endorsement contract...

BTW, nice bikes. What's your favorite?
07-22-23, 09:34 AM
Replies: 35
Views: 1,273
Posted By WizardOfBoz

Cycommute, we certainly now know your favorite...

Cycommute, we certainly now know your favorite brand of headset! I think that the Chris Kings are pretty good.
07-22-23, 08:41 AM
Replies: 19
Views: 9,031
Posted By WizardOfBoz

Ok, I'm an engineer. I suggest being careful...

Ok, I'm an engineer. I suggest being careful about this. The original seat post was designed to accommodate a maximum lever arm. Extending the post adds to the lever arm. This could put a higher than...
Showing results 1 to 50 of 1000
 


 
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