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Search: Posts Made By: jccaclimber
Showing results 1 to 50 of 1000
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Forum: Bicycle Mechanics
01-02-24, 01:58 AM
Replies: 48
Views: 3,262
Posted By jccaclimber

I’ve personally seen bikes come in to our local...

I’ve personally seen bikes come in to our local co-op with nothing but the safety pin holding the crank on. It’s usually a “something feels funny, I think my bearings are loose.” If nothing else it...
Forum: Bicycle Mechanics
10-14-23, 11:33 AM
Replies: 17
Views: 823
Posted By jccaclimber

A prefect derailer hanger will align perfectly on...

A prefect derailer hanger will align perfectly on a perfect frame. Derailer hangers even new can be imperfect, and you know your frame is imperfect. Use a derailer alignment checking tool on the...
Forum: Bicycle Mechanics
09-16-23, 12:23 PM
Replies: 28
Views: 1,487
Posted By jccaclimber

While I don’t prefer them, I’ve used a lot of...

While I don’t prefer them, I’ve used a lot of rubber rim strips in the past. They aren’t much different than a tube section. They also fail for the same reason, but take several years to do so unless...
Forum: Bicycle Mechanics
09-04-23, 05:38 PM
Replies: 18
Views: 587
Posted By jccaclimber

Has the hub design improved any in the last...

Has the hub design improved any in the last decade? I remember being pretty excited to get a Nuvinci hub for a recumbent racing project. We started making up a motor to control the shifter based on...
Forum: Tandem Cycling
08-03-23, 09:03 PM
Replies: 15
Views: 1,747
Posted By jccaclimber

My older (originally 8 speed Shimano) DaVinci has...

My older (originally 8 speed Shimano) DaVinci has the same 4 speed front. I think they are typically 3 speed now as electronic and STI/Ergo indexed front shifting doesn't support 4, but it's been a...
Forum: Bicycle Mechanics
07-26-23, 04:54 PM
Replies: 38
Views: 1,702
Posted By jccaclimber

While it’s quite possible to put $7000 into a...

While it’s quite possible to put $7000 into a single rolling tool chest, it’s also quite possible to get something very useful for $100 on Craigslist, sometimes even still looking nice.

The main...
Forum: Bicycle Mechanics
07-26-23, 01:19 AM
Replies: 38
Views: 1,702
Posted By jccaclimber

a masonry bit, even in a normal drill, and a pack...

a masonry bit, even in a normal drill, and a pack of block inserts will solve that problem. Easier with a hammer drill, but the bit will survive in a normal drill for that quantity of holes.
Forum: Bicycle Mechanics
07-25-23, 05:34 PM
Replies: 38
Views: 1,702
Posted By jccaclimber

Beyond the TLDR I wrote above, labels and things...

Beyond the TLDR I wrote above, labels and things being straight go a long way. Raise your bike hooks enough that the rear wheels are just off the ground and the frames hang straight. It’ll take a...
Forum: Bicycle Mechanics
07-25-23, 05:31 PM
Replies: 38
Views: 1,702
Posted By jccaclimber

No pictures, but my layout it something like...

No pictures, but my layout it something like this. I don’t have enough wall space to pegboard everything, nor do I use my bike tools weekly anymore. This also encompasses more than bike tools (see...
Forum: Tandem Cycling
07-22-23, 01:15 PM
Replies: 7
Views: 868
Posted By jccaclimber

As with anything, it depends. Most stokers I’ve...

As with anything, it depends. Most stokers I’ve ridden with learn to talk through the pedals. Some on the first ride, but most others eventually. My wife, despite more than a decade of on and off...
Forum: Bicycle Mechanics
07-16-23, 10:48 PM
Replies: 11
Views: 664
Posted By jccaclimber

Bicycle races may be different, but all of the...

Bicycle races may be different, but all of the cartridge bearings I have opened and checked on a Talysurf have been constant radius. Steering gear ball screws are gothic arch, though even then...
Forum: Bicycle Mechanics
07-01-23, 07:31 PM
Replies: 75
Views: 3,084
Posted By jccaclimber

The other name brand calipers all have similar...

The other name brand calipers all have similar battery life to the Mitutoyos. The cheap imports use cheaper batteries when new, and have substantially higher power consumption when turned off. ...
Forum: Bicycle Mechanics
06-09-23, 08:07 PM
Replies: 53
Views: 2,674
Posted By jccaclimber

To the OP, if you really want to do this: 1....

To the OP, if you really want to do this:

1. Get a shop to waterjet if from a piece of steel and harden it with a torch, roll your own handle.
2. Something like McMaster Carr PN 5524A32 with a...
Forum: Bicycle Mechanics
05-13-23, 09:25 PM
Replies: 25
Views: 808
Posted By jccaclimber

1. I'd ride it as-is, though it does look like...

1. I'd ride it as-is, though it does look like the brake pad might end up being too high after it's worn halfway through. I would keep an eye on it every now and then, like one should any bike part,...
Forum: Bicycle Mechanics
05-09-23, 09:54 AM
Replies: 150
Views: 8,835
Posted By jccaclimber

Depends on how good the bond is. Often the bond...

Depends on how good the bond is. Often the bond to the sleeve is reliant on the sleeve being continuous in at least one portion. Cut it in this strips, maybe warm the adhesive, and you can sometimes...
Forum: Bicycle Mechanics
05-08-23, 09:18 PM
Replies: 150
Views: 8,835
Posted By jccaclimber

Normally judicious use of a hacksaw in pliers or...

Normally judicious use of a hacksaw in pliers or a file is sufficient, though it is quite easy to damage a frame if you aren't paying attention.
Forum: Bicycle Mechanics
05-08-23, 10:56 AM
Replies: 150
Views: 8,835
Posted By jccaclimber

I would say coaxial rather than just parallel. ...

I would say coaxial rather than just parallel.
It might not ream great otherwise once you slot it. Reamers like to catch on edges.
If it has already peeled out somewhere I’d try to ream or peel...
Forum: Bicycle Mechanics
05-07-23, 05:32 PM
Replies: 5
Views: 416
Posted By jccaclimber

A slightly bent axle will cause this as well.

A slightly bent axle will cause this as well.
Forum: Bicycle Mechanics
05-06-23, 08:42 PM
Replies: 150
Views: 8,835
Posted By jccaclimber

I’ve hesitated to chime into this mess of a...

I’ve hesitated to chime into this mess of a thread for many reasons. That said:
1. Adjustable reamers don’t cost a ton. Dull the edges with a stone and they won’t want to cut the aluminum just as...
Forum: Bicycle Mechanics
04-06-23, 06:30 AM
Replies: 31
Views: 1,087
Posted By jccaclimber

It doesn’t change the fact that it isn’t needed...

It doesn’t change the fact that it isn’t needed in this application, but from a general metrology perspective a depth gage can be handy. For those curious, they do make clip on bases that widen a...
Forum: Bicycle Mechanics
02-02-23, 10:18 PM
Replies: 24
Views: 1,850
Posted By jccaclimber

Typically I don't grind a tool because I don't...

Typically I don't grind a tool because I don't want to pay for the correct thing, I grind a tool because I don't want to wait for the correct thing. Middle of the night swapping a clutch, socket...
Forum: Bicycle Mechanics
01-17-23, 02:56 AM
Replies: 43
Views: 1,846
Posted By jccaclimber

Many bearings are commonly available in stainless...

Many bearings are commonly available in stainless (440C). I suspect that will be fine for the duration of training. Plan to replace them before the competition, and don’t worry about it. You could...
Forum: Bicycle Mechanics
12-27-22, 12:11 AM
Replies: 81
Views: 3,746
Posted By jccaclimber

They’re almost passable at crimping on cable...

They’re almost passable at crimping on cable ferrules if you don’t have your dedicated Knipex crimper on hand.
Mind you, nearly all cable cutters have a built in crimping tool. Sadly cable cutters...
Forum: Bicycle Mechanics
12-26-22, 11:18 AM
Replies: 23
Views: 1,221
Posted By jccaclimber

In that case same force is going to be pretty...

In that case same force is going to be pretty close to same braking friction. I was just pointing out that as you take things to an extreme the rules break down. For example, readjust your pads that...
Forum: Bicycle Mechanics
12-26-22, 01:46 AM
Replies: 23
Views: 1,221
Posted By jccaclimber

Friction is independent of surface area in the...

Friction is independent of surface area in the same way that saying lower spike count makes for a lighter wheel. In general it’s true if you can ignore other codependent variables. When you take the...
Forum: Bicycle Mechanics
12-26-22, 01:17 AM
Replies: 5
Views: 276
Posted By jccaclimber

Sort of echoing the above. With a backup pedal on...

Sort of echoing the above. With a backup pedal on hand I would first open them up. This does two things. First, it makes sure they will come apart and go back together without some critical plastic...
Forum: Bicycle Mechanics
12-24-22, 10:39 PM
Replies: 81
Views: 3,746
Posted By jccaclimber

Favorite all around Tool? Probably my mill, but...

Favorite all around Tool? Probably my mill, but possibly only because I don’t own a lathe.

Favorite bicycle tool is probably a dial indicator. I’m not sure it lets me true wheels substantially...
Forum: Bicycle Mechanics
12-12-22, 02:19 AM
Replies: 16
Views: 1,183
Posted By jccaclimber

I have calipers with close enough length jaws, so...

I have calipers with close enough length jaws, so I usually go that route. They do make caliper tips that can act as extenders for those curious. It would not be difficult to rig an simpler...
Forum: Bicycle Mechanics
12-05-22, 03:13 AM
Replies: 60
Views: 3,313
Posted By jccaclimber

1. If you think the person assembling this,...

1. If you think the person assembling this, assuming a person was even involved, is looking at those parts then you’ve never worked in/near a low wage factory assembly position. The time to inspect...
Forum: Bicycle Mechanics
12-04-22, 12:56 AM
Replies: 29
Views: 1,669
Posted By jccaclimber

It's been a while since I've seen a cast iron...

It's been a while since I've seen a cast iron surface plate in use as a surface plate, do you scrape as well?
Forum: Tandem Cycling
11-13-22, 12:49 PM
Replies: 23
Views: 1,589
Posted By jccaclimber

This is exactly how our bike is set up, same...

This is exactly how our bike is set up, same shifter ever. I have found that the shifter can't hold as much tension in the brake cable as the stoker can put in to it though, so for maximum braking...
Forum: Tandem Cycling
11-13-22, 12:37 PM
Replies: 7
Views: 1,302
Posted By jccaclimber

It’s been a bit since this was posted, so...

It’s been a bit since this was posted, so hopefully this ended well. A few thoughts:
1. When encountering a new problem of unknown progression, inspect. If it passes inspection, proceed. If no...
Forum: Bicycle Mechanics
10-27-22, 07:24 PM
Replies: 31
Views: 2,791
Posted By jccaclimber

Several years ago I was discussing the heat...

Several years ago I was discussing the heat treating of aluminum with an extruder who was making a custom extrusion for me. One of their past products was the extrusion for a bicycle handlebar maker....
Forum: Bicycle Mechanics
10-25-22, 11:43 PM
Replies: 18
Views: 645
Posted By jccaclimber

I'm well aware that bearings are one of the best...

I'm well aware that bearings are one of the best controlled COTS parts out there. Part of that is from not doing things that aren't needed. In the first post of yours that I quoted you said to use...
Forum: Bicycle Mechanics
10-21-22, 11:07 PM
Replies: 18
Views: 645
Posted By jccaclimber

So you think a cost sensitive industry that makes...

So you think a cost sensitive industry that makes parts by the million is paying for an extra part that makes their product worse?

Some exceptions abound, generally around trying to make a ruined...
Forum: Tandem Cycling
10-21-22, 10:49 PM
Replies: 10
Views: 4,374
Posted By jccaclimber

I was going to say to just find/make a Xtracycle...

I was going to say to just find/make a Xtracycle type device for a single, but then you mentioned wanting a stoker occasionally.
Is this as simple as removing the stoker pedals (assuming not a...
Forum: Tandem Cycling
10-21-22, 10:46 PM
Replies: 5
Views: 1,708
Posted By jccaclimber

Not a proper field repair, but can you get a...

Not a proper field repair, but can you get a finger tip to it enough to get it spun most of the way in? I doubt it would stay that way long, but in other circumstances it might be better than...
Forum: Tandem Cycling
10-16-22, 08:49 PM
Replies: 16
Views: 1,877
Posted By jccaclimber

The drivetrain arguments are slightly different,...

The drivetrain arguments are slightly different, but the same is true of recumbents on hills vs flats when compared to upright singles. In that case there is often a weight penalty, but the change...
Forum: Bicycle Mechanics
10-13-22, 08:58 PM
Replies: 25
Views: 652
Posted By jccaclimber

Often carbon on aluminum, though I imagine it...

Often carbon on aluminum, though I imagine it would do fine carbon on steel.
That toothed washer is probably doing more with the paint than the actual fork crown metal anyways.
Sand is a perfectly...
Forum: Bicycle Mechanics
10-13-22, 12:46 AM
Replies: 106
Views: 4,192
Posted By jccaclimber

Let’s ignore for a moment marketing and economies...

Let’s ignore for a moment marketing and economies of scale.
If you run your bicycle chain in a clean sealed environment, bathed in continuously filtered lubricant, and regularly heat it up enough to...
Forum: Bicycle Mechanics
10-07-22, 06:13 PM
Replies: 15
Views: 7,814
Posted By jccaclimber

A US dime is around 1.35 mm thick. You should be...

A US dime is around 1.35 mm thick. You should be able to visually interpolate half the thickness of a dime (or stack one between the rim and orange soda can at one side and use a full dime), and...
Forum: Bicycle Mechanics
09-28-22, 02:14 AM
Replies: 57
Views: 2,590
Posted By jccaclimber

While it’s not common in most circles, it...

While it’s not common in most circles, it depends. Until the tire is leaving tangent to the rim increased width means wider. After that it means narrower. Yes, with hooked rims the tire does stay on....
Forum: Bicycle Mechanics
09-27-22, 08:56 AM
Replies: 182
Views: 16,210
Posted By jccaclimber

I wrote to Norton about this several years ago in...

I wrote to Norton about this several years ago in the process of putting together a shop safety document. Their response, in short, was that while you will clog the wheel and need to dress it, that...
Forum: Bicycle Mechanics
09-27-22, 12:24 AM
Replies: 23
Views: 697
Posted By jccaclimber

Two reasons: 1. They are still quite common. ...

Two reasons:
1. They are still quite common.
2. If you don’t have rim brakes, your required level of true (axial runout) is much less.

If you’re not running rim brakes then anything that doesn’t...
Forum: Bicycle Mechanics
09-25-22, 02:42 PM
Replies: 23
Views: 697
Posted By jccaclimber

It depends on how far “out there” is. If we’re...

It depends on how far “out there” is. If we’re talking my commute home from work I’m going to loosen the brakes to make the rim clear, ride slowly, and fix it at home.
If that’s not enough, or I’m...
Forum: Bicycle Mechanics
09-25-22, 03:19 AM
Replies: 19
Views: 1,388
Posted By jccaclimber

Commute in the rain and it’ll take half the time....

Commute in the rain and it’ll take half the time.
I wouldn’t recommend any corrosive, you’re likely to end up with pitting, which may be the least of your issues at that point.
Forum: Bicycle Mechanics
09-24-22, 02:26 AM
Replies: 20
Views: 600
Posted By jccaclimber

If the amount it’s off by is as small as I...

If the amount it’s off by is as small as I suspect you could probably shim under the drive side locknut as well.
Shim stock, tin snips, a nibbler, and for thinner things a throwaway pair of scissors...
Forum: Bicycle Mechanics
09-23-22, 01:53 AM
Replies: 56
Views: 4,392
Posted By jccaclimber

What specifically was the manufacturer’s reply? ...

What specifically was the manufacturer’s reply? They do still sell these, or at least claim to, so manuals should be available.

50% off sounds like a high asking price for a machine that doesn’t...
Forum: Bicycle Mechanics
09-20-22, 11:05 PM
Replies: 22
Views: 1,132
Posted By jccaclimber

It doesn't work so well with the nearest shop...

It doesn't work so well with the nearest shop being 40 miles away, but I used to run a small business as a side gig in an unrelated hobby. It was heavily service based, and additionally I kept the...
Forum: Bicycle Mechanics
09-18-22, 02:04 AM
Replies: 56
Views: 4,392
Posted By jccaclimber

Reaching out to the manufacturer is your best...

Reaching out to the manufacturer is your best bet. After that I’d start digging around through the menus and see if there’s a way to home or rezero the device sensors. If you haven’t tried it, I...
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