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Search: Posts Made By: oldbobcat
Showing results 1 to 50 of 338
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Forum: Bicycle Mechanics
04-26-24, 02:51 PM
Replies: 16
Views: 227
Posted By oldbobcat

Don't ride your bike? Sorry, there are...

Don't ride your bike?

Sorry, there are myriad reasons for a chain popping off. I don't know how anyone can solve this without looking at the bike, or not even knowing what kind of bike it is, or...
Forum: Fitting Your Bike
04-22-24, 03:06 PM
Replies: 13
Views: 361
Posted By oldbobcat

This forum is about bike fit. Gear ratios are not...

This forum is about bike fit. Gear ratios are not about bike fit. You might get better responses if you post this in mechanics or mountain biking
Forum: Bicycle Mechanics
04-20-24, 02:49 PM
Replies: 62
Views: 1,702
Posted By oldbobcat

Your current low gear ration is 1.7:1. Most...

Your current low gear ration is 1.7:1. Most likely, your rear derailleur will handle a 13/28 cassette with no problem. That gives you a low of 1.4:1. I don't know what the hills in your neighborhood...
Forum: Bicycle Mechanics
04-16-24, 09:36 AM
Replies: 30
Views: 1,258
Posted By oldbobcat

You said it right there. Anything on a 10-speed...

You said it right there. Anything on a 10-speed chain or thinner after 3000 miles is on borrowed time.
Forum: Bicycle Mechanics
04-08-24, 09:28 AM
Replies: 30
Views: 1,120
Posted By oldbobcat

A pile of parts that no one wants.

A pile of parts that no one wants.
Forum: Bicycle Mechanics
04-05-24, 06:21 PM
Replies: 21
Views: 722
Posted By oldbobcat

That will screw up your chain line. Better...

That will screw up your chain line.

Better to extend at the other end of the crank. Your local bike shop probably does not stock pedal spindle extenders, but they can order them for you from J&B....
Forum: Bicycle Mechanics
04-01-24, 01:33 PM
Replies: 14
Views: 430
Posted By oldbobcat

Are you sure you threaded the chain on the...

Are you sure you threaded the chain on the correct side of the retention tab on the pivot arm of the rear derailleur?
Forum: Bicycle Mechanics
03-26-24, 12:42 PM
Replies: 39
Views: 1,311
Posted By oldbobcat

Right. Bicycle hydraulic brakes are...

Right.

Bicycle hydraulic brakes are self-adjusting. That's why when you squeeze the lever without a rotor between the pads you have to pry the caliper open to get the wheel back on. If you doubt...
Forum: Fitting Your Bike
03-26-24, 12:21 PM
Replies: 9
Views: 530
Posted By oldbobcat

A handlebar with the proper width and less reach.

A handlebar with the proper width and less reach.
Forum: Fitting Your Bike
03-16-24, 07:37 PM
Replies: 45
Views: 1,533
Posted By oldbobcat

This guy explains it better than I can....

This guy explains it better than I can. https://www.youtube.com/watch?v=ZbuK4-HXhxY
Forum: Fitting Your Bike
03-12-24, 09:14 AM
Replies: 51
Views: 2,256
Posted By oldbobcat

The LeMond era ushered in wider handlebars,...

The LeMond era ushered in wider handlebars, longer cranks, bigger gears, longer reach, and Look and Time pedals. You had to be super-attuned to your cleat positioning, or have friends who were. Body...
Forum: Fitting Your Bike
03-10-24, 07:50 PM
Replies: 4
Views: 313
Posted By oldbobcat

Chris Froome tends to stick his elbows out, too,...

Chris Froome tends to stick his elbows out, too, and everybody does it in a full-out sprint.

Sticking your elbows out could be an old habit or it could be the result of a handlebar angle that...
Forum: Fitting Your Bike
03-10-24, 07:23 PM
Replies: 45
Views: 1,533
Posted By oldbobcat

Well, all I can tell you is that the headtube on...

Well, all I can tell you is that the headtube on the Planet X is taller and you won't be able to load it up with spacers because the steerer is already cut, and it's most likely that the top tube is...
Forum: Fitting Your Bike
03-07-24, 10:05 AM
Replies: 45
Views: 1,533
Posted By oldbobcat

Your neck pain might be the 59cm top tube's way...

Your neck pain might be the 59cm top tube's way of talking to you. If your old bike was comfortable, I would measure it and try to figure out why. Try to adjust the new bike to match the old one as...
Forum: Fitting Your Bike
03-06-24, 10:43 PM
Replies: 51
Views: 2,256
Posted By oldbobcat

I like the crack about the "Parkinson's-afflicted...

I like the crack about the "Parkinson's-afflicted newbie triathlete." That's the way I pedaled when I started out in 1970. That was long before triathlons. After a 90-mile ride it wrecked my right...
Forum: Fitting Your Bike
03-05-24, 05:21 PM
Replies: 12
Views: 801
Posted By oldbobcat

Your leg length is pretty proportional to your...

Your leg length is pretty proportional to your height. Go no larger than 56, no smaller than 54. Test ride a few to be sure. Be sure you can straddle the top tube at its entire length, and you might...
Forum: Bicycle Mechanics
02-27-24, 10:01 PM
Replies: 53
Views: 2,344
Posted By oldbobcat

Well, good for you. But this guy just wanted to...

Well, good for you. But this guy just wanted to keep his hub from slipping in the horizontal dropout. What is your problem?

Riders a lot stronger than you or I have been successfully using...
Forum: Bicycle Mechanics
02-27-24, 12:43 PM
Replies: 43
Views: 1,318
Posted By oldbobcat

Most bike shops have a box of swap-out saddles...

Most bike shops have a box of swap-out saddles underneath the workbench. You could ask.
Forum: Fitting Your Bike
02-26-24, 09:51 AM
Replies: 6
Views: 500
Posted By oldbobcat

After seeing a doctor I and getting the OK, I...

After seeing a doctor I and getting the OK, I would continue to ride the bike but concentrate on low-impact efforts. That means low-gear spinning and no big-gear sprints until the condition clears....
Forum: Bicycle Mechanics
02-24-24, 12:07 PM
Replies: 28
Views: 1,505
Posted By oldbobcat

Sometimes it just seems too difficult to walk...

Sometimes it just seems too difficult to walk into a bike shop and ask for something. I don't understand why.
Forum: Bicycle Mechanics
02-24-24, 10:06 AM
Replies: 14
Views: 461
Posted By oldbobcat

Suspend the bike (workstand, skyhook, whatever)...

Suspend the bike (workstand, skyhook, whatever) and watch the chain mesh with the chainring as you turn the crank slowly. The problem should become apparent to the naked eye.
Forum: Bicycle Mechanics
02-24-24, 10:00 AM
Replies: 28
Views: 1,505
Posted By oldbobcat

That means you can buy it at just about any...

That means you can buy it at just about any bicycle store. They might have to order it.
Forum: Bicycle Mechanics
02-19-24, 06:19 PM
Replies: 42
Views: 1,309
Posted By oldbobcat

Sharpen the threaded end and use the J end for...

Sharpen the threaded end and use the J end for fishing cable ends out of frame tubes. It's perfect for that.
Forum: Bicycle Mechanics
02-18-24, 04:39 PM
Replies: 42
Views: 1,309
Posted By oldbobcat

Never ever cut a new cable before you're finished...

Never ever cut a new cable before you're finished threading it through everything it needs to be threaded through, and attached it with a pinch bolt. And always cap it when you're done.
Forum: Bicycle Mechanics
02-18-24, 11:38 AM
Replies: 42
Views: 1,309
Posted By oldbobcat

Just open up the ends using a pick or awl, and...

Just open up the ends using a pick or awl, and clean up the jaggies with a file, sandpaper, or bench grinder.
Forum: Bicycle Mechanics
02-15-24, 10:26 AM
Replies: 31
Views: 980
Posted By oldbobcat

In my experience chain suck indicates badly worn...

In my experience chain suck indicates badly worn chainrings. Check both.
Forum: Bicycle Mechanics
02-04-24, 04:49 PM
Replies: 43
Views: 1,526
Posted By oldbobcat

If you give it a sound overhaul before the ride,...

If you give it a sound overhaul before the ride, replacing worn or damaged parts and rubber, it will not fall apart. If something breaks during the ride, however, you might have trouble finding...
Forum: Bicycle Mechanics
02-01-24, 01:55 PM
Replies: 30
Views: 1,137
Posted By oldbobcat

It's done five years of duty on a cargo bike.

It's done five years of duty on a cargo bike.
Forum: Bicycle Mechanics
01-30-24, 12:00 PM
Replies: 25
Views: 1,157
Posted By oldbobcat

No. Use penetrating lube (I like Finish...

No.

Use penetrating lube (I like Finish Line's Chill Zone), a solid wrench, and plenty of leverage.
Forum: Bicycle Mechanics
01-28-24, 11:14 AM
Replies: 17
Views: 561
Posted By oldbobcat

These are standard road pad cartridges, made by...

These are standard road pad cartridges, made by Shimano, SRAM, Jagwire, Kool-stop, Tektro, . . .
Forum: Fitting Your Bike
01-26-24, 10:17 AM
Replies: 11
Views: 1,238
Posted By oldbobcat

Kontact give you some decent metrics to start...

Kontact give you some decent metrics to start with. Here's some of the rationale behind it.

Sitting far forward is good for generating power on the downstroke, but it's exhausting for the upper...
Forum: Bicycle Mechanics
01-12-24, 04:14 PM
Replies: 3
Views: 244
Posted By oldbobcat

From an experienced Speedplay user, No.

From an experienced Speedplay user, No.
Forum: Fitting Your Bike
01-08-24, 09:52 PM
Replies: 16
Views: 1,006
Posted By oldbobcat

You're splitting hairs and the knees and ankles...

You're splitting hairs and the knees and ankles are quite adaptable. If you have to finish your pedal stroke by pointing your toes or rocking your hips, or you find yourself always creeping to the...
Forum: Bicycle Mechanics
01-08-24, 09:40 PM
Replies: 55
Views: 3,135
Posted By oldbobcat

My boss used to question my character when I said...

My boss used to question my character when I said I just lay a 2-foot broom handle over the hoods and eyeball it to be parallel to the top of the handlebar. I told him that absolute-level didn't...
Forum: Bicycle Mechanics
01-08-24, 02:16 PM
Replies: 15
Views: 782
Posted By oldbobcat

Tourney is designed to work with indexed...

Tourney is designed to work with indexed shifters. The FD pull rate is the same for 6- through 9-speed MTB drivetrains. The width of the Tourney cage is set for wider 7-speed chains, though.
Forum: Bicycle Mechanics
12-29-23, 10:51 AM
Replies: 7
Views: 471
Posted By oldbobcat

Praxis Alba cranks are available in 48-32, 50-34,...

Praxis Alba cranks are available in 48-32, 50-34, and 52-36, and are compatible with Campagnolo. https://praxiscycles.com/product/alba/#FAQ
Forum: Bicycle Mechanics
12-29-23, 10:30 AM
Replies: 34
Views: 1,815
Posted By oldbobcat

What he said. I put 28s on my 2012 Madone, and...

What he said. I put 28s on my 2012 Madone, and while I can say the ride may have gotten infinitesimally smoother, getting a fully inflated tire past the brake pads got more difficult, some cornering...
Forum: Fitting Your Bike
12-28-23, 06:26 PM
Replies: 18
Views: 1,458
Posted By oldbobcat

As we get older some of us lose the muscle tone...

As we get older some of us lose the muscle tone we had back there, and some of us also find ourselves sitting more upright. I would be hard-pressed to try to tilt my pelvis to flatten my lower back...
Forum: Bicycle Mechanics
12-26-23, 02:29 PM
Replies: 8
Views: 525
Posted By oldbobcat

I don't remember the pull rates, but it's been...

I don't remember the pull rates, but it's been tried and found wanting.
Forum: Bicycle Mechanics
12-09-23, 07:25 PM
Replies: 22
Views: 812
Posted By oldbobcat

I used to re-use spokes and nipples on my Raleigh...

I used to re-use spokes and nipples on my Raleigh Super Course when I was a college student with no money, but I gave that up when I became an amateur racer with no money.
Forum: Bicycle Mechanics
12-02-23, 11:29 AM
Replies: 74
Views: 3,310
Posted By oldbobcat

As long as you don't feel insulted when they...

As long as you don't feel insulted when they laugh as soon as your back is turned.
Forum: Fitting Your Bike
11-30-23, 09:55 PM
Replies: 7
Views: 860
Posted By oldbobcat

I'm glad you're back at it. It seems like...

I'm glad you're back at it.

It seems like the designers figured out that extreme cockpit geometries restrict their bikes' marketability. There's been some recent moderation, and I'm all in for...
Forum: Fitting Your Bike
11-17-23, 05:33 PM
Replies: 15
Views: 2,716
Posted By oldbobcat

The 52.5 is longer in the top tube than some 56s ...

The 52.5 is longer in the top tube than some 56s 48 is really tiny and you're about medium height, with large feet and slightly short legs. I concur with 50.5. These bikes seem to run about 2-3 cm...
Forum: Bicycle Mechanics
11-14-23, 09:49 AM
Replies: 51
Views: 2,785
Posted By oldbobcat

Thanks. I'll look it up on my way out.

Thanks. I'll look it up on my way out.
Forum: Bicycle Mechanics
11-12-23, 09:22 PM
Replies: 51
Views: 2,785
Posted By oldbobcat

Hand-tight should be sufficient to keep the...

Hand-tight should be sufficient to keep the extractor nut from rattling loose. Always make sure it's tight and clean before trying to remove the crank. I like to make sure the threads and interface...
Forum: Bicycle Mechanics
11-10-23, 11:20 PM
Replies: 33
Views: 1,316
Posted By oldbobcat

If this heat-treated alloy hanger gets hit hard...

If this heat-treated alloy hanger gets hit hard enough to break, it's taking the rest of the frame with it. If it's slightly tweaked, it shouldn't take too much finesse to tweak it back. Put a wheel...
Forum: Fitting Your Bike
11-05-23, 03:29 PM
Replies: 22
Views: 1,088
Posted By oldbobcat

The sternum is the bone in the center of the...

The sternum is the bone in the center of the chest where the ribs and clavicle are joined. As you can see, it is quite long and has three sections....
Forum: Bicycle Mechanics
11-05-23, 03:12 PM
Replies: 25
Views: 1,096
Posted By oldbobcat

After removing the remnants of the old cable,...

After removing the remnants of the old cable, spray some solvent inside the shift mechanism to flush out dirt and dried grease. Work the shifter through the detentes, then let it dry or blow out with...
Forum: Bicycle Mechanics
11-03-23, 04:49 PM
Replies: 3
Views: 519
Posted By oldbobcat

It's probably this:...

It's probably this: https://www.ebay.com/itm/165471030140?chn=ps&mkevt=1&mkcid=28&var=465023407854&srsltid=AfmBOooVHCVDQm67f4cab4tcFTela2tg5rSnPD3RH__W6_iRCRA9VboZHw0


44 refers to the ID of the...
Forum: Bicycle Mechanics
10-30-23, 12:58 PM
Replies: 8
Views: 340
Posted By oldbobcat

To test, loosen your axle limit screws to the...

To test, loosen your axle limit screws to the desired depth, move the wheel forward, and see if you can double a section of chain. My eyeball estimate says, yes, you can safely remove one pair of...
Showing results 1 to 50 of 338
 
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