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Search: Posts Made By: oldbobcat
Showing results 1 to 50 of 1000
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Forum: Bicycle Mechanics
06-01-24, 08:48 PM
Replies: 12
Views: 392
Posted By oldbobcat

Your outer pinch bolt is still outboard of the...

Your outer pinch bolt is still outboard of the end of the spindle. I wouldn't trust that crank to not work itself loose.
Forum: Bicycle Mechanics
06-01-24, 08:31 PM
Replies: 21
Views: 435
Posted By oldbobcat

Your bike shop, the one you trust, can order a...

Your bike shop, the one you trust, can order a nice steel fixed fork that will fit properly, and install it for you.
Forum: Bicycle Mechanics
06-01-24, 01:02 PM
Replies: 12
Views: 398
Posted By oldbobcat

Unless it's getting repeatedly whacked in the...

Unless it's getting repeatedly whacked in the community bike rack or you fall a lot, that should not happen. Check the hanger for alignment (always). Then look at your cables for delaminations and...
Forum: Bicycle Mechanics
05-31-24, 11:13 AM
Replies: 12
Views: 392
Posted By oldbobcat

Did you try to install a road crank for a 68 mm...

Did you try to install a road crank for a 68 mm BB shell in a mountain bike shell that's 73 mm wide? And then add 4 mm of shims so the crank would clear the chain stay?
Forum: Fitting Your Bike
05-31-24, 11:04 AM
Replies: 6
Views: 290
Posted By oldbobcat

Then compare virtual top tube dimensions. Look,...

Then compare virtual top tube dimensions. Look, there are always fudge factors in how far you're going to reach for a handlebar, anyway--stem stack, stem angle, stem spacers and compression cone...
Forum: Fitting Your Bike
05-31-24, 10:55 AM
Replies: 3
Views: 235
Posted By oldbobcat

Only when you put your feet on the ground.

Only when you put your feet on the ground.
Forum: Bicycle Mechanics
05-31-24, 10:53 AM
Replies: 16
Views: 430
Posted By oldbobcat

Is the crank hitting the end of the front...

Is the crank hitting the end of the front derailleur cable? Check the tension on the rear quick-release skewer. It should be tighter than you'd think. I got burned by this some 12 years ago. It was...
Forum: Bicycle Mechanics
05-31-24, 10:47 AM
Replies: 23
Views: 677
Posted By oldbobcat

Using a chain until it breaks usually means...

Using a chain until it breaks usually means chainrings and rear cogs are worn out, too. Check this, or have it checked.
Forum: Bicycle Mechanics
05-30-24, 03:37 PM
Replies: 12
Views: 398
Posted By oldbobcat

When these started coming in new bikes, they were...

When these started coming in new bikes, they were either stuck on, probably randomly, or in a small plastic parts bag with a tiny, obscure instruction sheet. If the cable was already attached, it was...
Forum: Bicycle Mechanics
05-30-24, 12:06 PM
Replies: 12
Views: 398
Posted By oldbobcat

Did you ever try flipping it just to see what...

Did you ever try flipping it just to see what would happen? There were times when using the indicator tool was just too close to tell and I ended up doing trial-and-error.
Forum: Bicycle Mechanics
05-30-24, 10:52 AM
Replies: 21
Views: 435
Posted By oldbobcat

The video shows movement between the fork crown...

The video shows movement between the fork crown and the frame, but you seem convinced that the problem is in the fork stanchions. I suggest you make more videos or take the bike to a shop. Somebody...
Forum: Bicycle Mechanics
05-29-24, 10:24 PM
Replies: 21
Views: 435
Posted By oldbobcat

With the fork removed from the bike, there are...

With the fork removed from the bike, there are only three locations for extraneous movement--the juncture of the upper and lower stanchions, the juncture of the upper stanchions to the crown, or the...
Forum: Bicycle Mechanics
05-29-24, 05:31 PM
Replies: 21
Views: 435
Posted By oldbobcat

Looking at the video, I can see that the movement...

Looking at the video, I can see that the movement is between the fork crown and the frame. The OP claims that he's already adjusted the headset.

My advice is to disconnect the brakes and...
Forum: Bicycle Mechanics
05-29-24, 03:09 PM
Replies: 12
Views: 398
Posted By oldbobcat

I discovered the cable tension problem on those...

I discovered the cable tension problem on those 11-speed FDs early on. My way of dealing with it was to set the low limit screw a couple turns too tight before fastening the cable. Then I'd loosen...
Forum: Bicycle Mechanics
05-29-24, 09:09 AM
Replies: 21
Views: 435
Posted By oldbobcat

What kind of bike, what kind of fork? Is this a...

What kind of bike, what kind of fork? Is this a fork worth rebuilding? Is this a bike worth salvaging with a new fork?
Forum: Bicycle Mechanics
05-27-24, 01:37 PM
Replies: 23
Views: 629
Posted By oldbobcat

I've worked on dozens of these. They're like a...

I've worked on dozens of these. They're like a Trek FX or a Cannondale Swift. Problems indexing on a cog on either end of the cassette usually indicates a limit screw is a little too tight. Problems...
Forum: Bicycle Mechanics
05-25-24, 05:19 PM
Replies: 3
Views: 194
Posted By oldbobcat

Looks pretty bad to me. The way I tell is to put...

Looks pretty bad to me. The way I tell is to put a new chain on, then pull tension on the crank and look over the top for the chain riding up on the teeth and gaps between the rollers and the teeth....
Forum: Bicycle Mechanics
05-25-24, 03:17 PM
Replies: 21
Views: 724
Posted By oldbobcat

Yeah, but that's a lot of chain slap, and most...

Yeah, but that's a lot of chain slap, and most likely the chain is rattling on the inside of the big ring.

But, properly set up, 105 11-speed is a pretty slick-shifting setup, and the brakes work...
Forum: Bicycle Mechanics
05-24-24, 01:56 PM
Replies: 5
Views: 202
Posted By oldbobcat

If I had a nickel for every home mechanic who...

If I had a nickel for every home mechanic who messed up the order and orientation of those spherical washers, I could buy coffee for the entire forum. Once you get that right, I find that orienting...
Forum: Bicycle Mechanics
05-24-24, 01:45 PM
Replies: 22
Views: 682
Posted By oldbobcat

First off, the rotor is not installed backwards,...

First off, the rotor is not installed backwards, and flipping it wouldn't change anything anyway. Those things are supposed to be flat as a 45 rpm vinyl record. You can play both sides.

Second, if...
Forum: Bicycle Mechanics
05-24-24, 01:26 PM
Replies: 23
Views: 629
Posted By oldbobcat

You can't get much simpler than 2x9. The big ring...

You can't get much simpler than 2x9. The big ring is for easy flats, downhill, and downwind. The little ring is for uphill and upwind. Choose the ring to match the general terrain, then choose the...
Forum: Bicycle Mechanics
05-24-24, 01:14 PM
Replies: 16
Views: 499
Posted By oldbobcat

If it's the same frame, and the same headset, but...

If it's the same frame, and the same headset, but a different fork, that would indicate that the lower bearing isn't seating correctly on the fork crown or something was assembled incorrectly. The...
Forum: Bicycle Mechanics
05-23-24, 04:38 PM
Replies: 21
Views: 724
Posted By oldbobcat

If the bike fits, there's really nothing wrong...

If the bike fits, there's really nothing wrong with it. The control levers have a reach adjustment. If you peel back the top of the rubber hoods you should find a grub screw that takes either a...
Forum: Fitting Your Bike
05-23-24, 04:29 PM
Replies: 29
Views: 1,106
Posted By oldbobcat

Yep, whether its a S or XS, it should still fit....

Yep, whether its a S or XS, it should still fit. Most women stop growing in their later teen years anyway. If it's still a concern, she should ride down to here local bike shop and get a 10-minute...
Forum: Fitting Your Bike
05-23-24, 02:08 PM
Replies: 29
Views: 1,106
Posted By oldbobcat

With some bikes using extended head tubes for...

With some bikes using extended head tubes for comfort, effective seat tube length hardly has any meaning now. My 58 cm H2 Trek Madone has not a single dimension that measures 58 cm, and using your...
Forum: Bicycle Mechanics
05-21-24, 04:22 PM
Replies: 20
Views: 505
Posted By oldbobcat

For 20 bucks a bike shop will either adjust that...

For 20 bucks a bike shop will either adjust that derailleur for you or tell you why i can't be adjusted and give you your money back.
Forum: Fitting Your Bike
05-19-24, 04:13 PM
Replies: 11
Views: 291
Posted By oldbobcat

Specialized had a line of crossover hybrids sized...

Specialized had a line of crossover hybrids sized like that, too, around 2009-10. All the shops ordered as if they were normally sized, so there were a lot of 57s, 59s, and maybe even some 61s, on...
Forum: Bicycle Mechanics
05-19-24, 11:16 AM
Replies: 42
Views: 1,127
Posted By oldbobcat

The attachment clamps of roof-mount trays are...

The attachment clamps of roof-mount trays are pretty independent of the shape of the crossbars nowadays. I've always been partial to Thule, but I've never heard any complaints about Yakima. And don't...
Forum: Bicycle Mechanics
05-19-24, 11:09 AM
Replies: 42
Views: 1,127
Posted By oldbobcat

Under sub-hurricane conditions, no. As for side...

Under sub-hurricane conditions, no. As for side G's, most cars and SUVs lose traction at 0.70-0.85, and most drivers rarely exceed 0.6.
Forum: Fitting Your Bike
05-18-24, 08:43 AM
Replies: 2
Views: 229
Posted By oldbobcat

I just put 28 mm GP 5000s on my 12 year old...

I just put 28 mm GP 5000s on my 12 year old Madone. They're a bit narrower than the 28 mm Bontrager R3 Lites I was using, so they work very well with the older, narrower rims, and there are no...
Forum: Fitting Your Bike
05-18-24, 08:35 AM
Replies: 11
Views: 291
Posted By oldbobcat

Not without a plumb bob, a protractor, and some...

Not without a plumb bob, a protractor, and some trigonometry. Personally, I can't even remember my stack and reach preferences, but give me dimensions for head tube, virtual top tube, bottom bracket...
Forum: Bicycle Mechanics
05-17-24, 08:59 PM
Replies: 18
Views: 557
Posted By oldbobcat

Bicycles don't customarily throw off nuts and...

Bicycles don't customarily throw off nuts and bolts, and trying to anticipate what you're likely to break or lose is nearly impossible. Keep your spares, remember your local bike shop has spares,...
Forum: Fitting Your Bike
05-17-24, 11:02 AM
Replies: 15
Views: 760
Posted By oldbobcat

The inseam method is almost as old as the days...

The inseam method is almost as old as the days when the salesman would simply pull down the largest frame that didn't crush your nuts when you straddled it. These days, manufacturer recommendation is...
Forum: Bicycle Mechanics
05-15-24, 12:23 PM
Replies: 34
Views: 974
Posted By oldbobcat

Oops, I forgot about that.

Oops, I forgot about that.
Forum: Bicycle Mechanics
05-15-24, 08:32 AM
Replies: 34
Views: 974
Posted By oldbobcat

FYI, all brakes that aren't drum brakes or old...

FYI, all brakes that aren't drum brakes or old Raleigh-style lever brakes are caliper brakes.

The tapered tubes say this is a hydroformed aluminum frame. The shift cables are internally routed...
Forum: Bicycle Mechanics
05-14-24, 08:43 AM
Replies: 34
Views: 1,374
Posted By oldbobcat

You can't put a 36t chainring on a crank with a...

You can't put a 36t chainring on a crank with a 130 mm bcd. 38t is available, but the gain is minimal and there will be problems as soon as the ring and chain start to show a little bit of wear....
Forum: Bicycle Mechanics
05-12-24, 11:05 AM
Replies: 43
Views: 1,110
Posted By oldbobcat

And why not bar-end shifters? They would appear...

And why not bar-end shifters? They would appear to be easier to actuate than any of these brake-hood attachments, providing you can get your hands on the drops.
Forum: Bicycle Mechanics
05-12-24, 11:02 AM
Replies: 43
Views: 1,110
Posted By oldbobcat

I was just using your post as a reference point,...

I was just using your post as a reference point, not trying to correct you. I'm sorry anybody misunderstood. But, yeah, the levers are the most costly part of the system, so it's kind of silly to...
Forum: Bicycle Mechanics
05-11-24, 06:28 PM
Replies: 43
Views: 1,110
Posted By oldbobcat

How? Dual control levers are a ratcheting...

How? Dual control levers are a ratcheting mechanism, and friction levers work by continuous sweep. By the time you swept the lever to the largest cog, you'd have to take your hand off the handlebar...
Forum: Bicycle Mechanics
05-10-24, 02:33 PM
Replies: 53
Views: 33,794
Posted By oldbobcat

After 16 years of dormancy, this thread lives...

After 16 years of dormancy, this thread lives again!
Forum: Bicycle Mechanics
05-09-24, 11:31 AM
Replies: 2
Views: 199
Posted By oldbobcat

Or you can buy new rubber pad cartridges already...

Or you can buy new rubber pad cartridges already inside the holders. SRAM, Shimano, Bontrager, or Jagwire will work.
Forum: Bicycle Mechanics
05-09-24, 11:27 AM
Replies: 6
Views: 342
Posted By oldbobcat

Make sure the stiff part of the tube where the...

Make sure the stiff part of the tube where the valve is attached is seated properly INSIDE the tire. And don't ride with a partially inflated tube.
Forum: Bicycle Mechanics
05-07-24, 10:54 AM
Replies: 5
Views: 226
Posted By oldbobcat

If you're still insisting on doing this, you...

If you're still insisting on doing this, you could group your spokes at the in threes, skipping a hole but alternating the head direction at the flange. At 3-cross, each spoke would cross one skip,...
Forum: Bicycle Mechanics
05-07-24, 10:39 AM
Replies: 6
Views: 292
Posted By oldbobcat

Bontrager (Trek) has a fender set for 700c x...

Bontrager (Trek) has a fender set for 700c x 32-35 mm tires. You might still have to notch them to get around the fork crown and rear stay bridges on your bike....
Forum: Bicycle Mechanics
05-07-24, 10:25 AM
Replies: 31
Views: 897
Posted By oldbobcat

I keep a couple for emergencies in my...

I keep a couple for emergencies in my under-saddle bag. I've even used them and forgotten they were there until I changed the tire. I think the trick is to keep them in a reasonably moisture-proof...
Forum: Fitting Your Bike
05-04-24, 09:53 AM
Replies: 6
Views: 438
Posted By oldbobcat

The Soma Highway One compact drop bar is...

The Soma Highway One compact drop bar is available with a 26.0 mm clamping diameter. The flat top and short reach are designed to work better with dual control levers....
Forum: Fitting Your Bike
05-03-24, 09:41 AM
Replies: 39
Views: 1,277
Posted By oldbobcat

You can see for yourself with regular road bars....

You can see for yourself with regular road bars. Start climbing a long hill, seated, with your hands on the tops. Now stand up without moving your hands.

I've done this for short intervals when I...
Forum: Fitting Your Bike
05-03-24, 09:15 AM
Replies: 39
Views: 1,277
Posted By oldbobcat

Different strokes for different folks. I think...

Different strokes for different folks. I think what you're describing is getting close to a mustache bar....
Forum: Fitting Your Bike
05-03-24, 08:58 AM
Replies: 39
Views: 1,277
Posted By oldbobcat

While seated.

While seated.
Forum: Fifty Plus (50+)
05-02-24, 05:08 PM
Replies: 18
Views: 1,086
Posted By oldbobcat

You'll find a way. I once spent a late winter and...

You'll find a way. I once spent a late winter and early spring downhill skiing and cycling while wearing a cast for a broken wrist. The cast tore up a mitten and the handlebar tape, and I had to be...
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