Search: Posts Made By: oldbobcat
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11-27-17, 10:47 PM
Replies: 14
Views: 2,672
Posted By oldbobcat

On the small side, but unless you need to sit...

On the small side, but unless you need to sit upright like a bus driver you should be able to make this work with the right stem, handlebar, and seatpost.
11-27-17, 10:42 PM
Replies: 6
Views: 1,488
Posted By oldbobcat

Hybrids and mountain bikes are sized differently...

Hybrids and mountain bikes are sized differently from road bikes which are sized differently from triathlon/time trial bikes.

The nominal (advertised) size of your FX is 22.5". At 6'1" you're at...
10-14-17, 10:06 PM
Replies: 8
Views: 962
Posted By oldbobcat

I've got the inflamed metatarsal nerve ailment,...

I've got the inflamed metatarsal nerve ailment, and metatarsal pads work for that. Body Geometry and Giro aftermarket footbeds have these pads built in, as do many new running and walking footbeds...
10-14-17, 08:50 PM
Replies: 6
Views: 1,457
Posted By oldbobcat

First, the bottom bracket has nothing to do with...

First, the bottom bracket has nothing to do with the stem. Forget about that.

Regarding reach, there are two components after frame reach--that's stem length and handlebar reach. The right...
10-12-17, 09:05 PM
Replies: 8
Views: 962
Posted By oldbobcat

Foot pain is nearly always related to your shoes...

Foot pain is nearly always related to your shoes and pedals. What I've learned is that the foot is a tripod, formed by the heel, the ball of the big toe and the big toe, and the ball of the smaller...
10-12-17, 08:16 PM
Replies: 63
Views: 3,688
Posted By oldbobcat

Bingo. J&B Importers has these in an assortment...

Bingo. J&B Importers has these in an assortment of inside and outside diameters. The lip at the top keeps the shim from slipping into the frame, so it works as if your seatpost actually fits.

Just...
10-12-17, 08:05 PM
Replies: 20
Views: 1,203
Posted By oldbobcat

Lacking a hose and outdoor faucet, you can still...

Lacking a hose and outdoor faucet, you can still wash a bike with a bucket of soapy water and a brush or sponge. When you're done scrubbing, toss the remaining soapy water, fill the bucket with rinse...
10-04-17, 10:09 PM
Replies: 7
Views: 640
Posted By oldbobcat

The right question. Tiagra 4700 derailleurs only...

The right question. Tiagra 4700 derailleurs only work with Tiagra 4700 levers.
10-04-17, 10:01 PM
Replies: 61
Views: 4,552
Posted By oldbobcat

My opinion is that setback is more about placing...

My opinion is that setback is more about placing the hips where you feel balanced over your feet. If your center of gravity falls forward of your feet, you will have to support the upper body with...
10-04-17, 09:54 PM
Replies: 2
Views: 745
Posted By oldbobcat

Saddles can be categorized by these attributes,...

Saddles can be categorized by these attributes, in roughly descending order of importance: butt width (width at the widest point), width between the thighs, length, profile contour (flat or scooped),...
10-01-17, 07:51 PM
Replies: 25
Views: 1,374
Posted By oldbobcat

A j-headed spoke works excellently as a small...

A j-headed spoke works excellently as a small stiff wired hook. Other tips: always thread from the smaller hole to the bigger hole; attach thin plastic tubing to the old cable before you pull it...
10-01-17, 07:42 PM
Replies: 9
Views: 690
Posted By oldbobcat

28" is another nomenclature for 700c, or 622 mm...

28" is another nomenclature for 700c, or 622 mm ISO. 27.5" is 650b, or 584mm ISO. Your local shop might be able to order you some skinnier, smoother 27.5" tires.
10-01-17, 07:34 PM
Replies: 9
Views: 645
Posted By oldbobcat

I agree with loosing the low limit screw a tad....

I agree with loosing the low limit screw a tad. While youi're looking at the front derialleur, check the clearance between the outer plate and the big ring. If it's more than 2mm, lower it to 1-2mm. ...
09-05-17, 08:30 PM
Replies: 7
Views: 1,172
Posted By oldbobcat

I hope you were wearing pants.:)

I hope you were wearing pants.:)
09-05-17, 08:25 PM
Replies: 20
Views: 730
Posted By oldbobcat

Even if you can fit a 700c wheel with a modest...

Even if you can fit a 700c wheel with a modest 35-40 mm tire on that fork, your linear pull brake pads won't reach the rim properly. So a disk brake would be necessary. Then, the travel of that fork...
08-28-17, 11:38 PM
Replies: 14
Views: 1,656
Posted By oldbobcat

I get that, too, when I'm riding a bike that...

I get that, too, when I'm riding a bike that doesn't have enough reach and drop in the handlebar. My back is used to a certain angle on a road bike, and if the handlebar forces me to sit higher than...
08-28-17, 11:28 PM
Replies: 7
Views: 4,829
Posted By oldbobcat

This is the one I go by. It seems to work for a...

This is the one I go by. It seems to work for a variety of back angles and frame geometries. A little shorter than 90 degrees works for more casual riders.

The forearm measurement was popular when...
06-12-17, 10:20 PM
Replies: 14
Views: 517
Posted By oldbobcat

The 11 speed cassette body is 1.85 mm wider than...

The 11 speed cassette body is 1.85 mm wider than the 8-10 speed. Hence, if you use an 8 or 9 speed cassette, it will require a 1.85 mm shim. Regarding 10 speed cassettes, there are two styles. SRAM...
06-12-17, 09:50 PM
Replies: 15
Views: 2,813
Posted By oldbobcat

If this is a loose-ball hub, I'm about 98% sure...

If this is a loose-ball hub, I'm about 98% sure the axle kit you need is Trek part #W268885.
06-11-17, 09:42 PM
Replies: 31
Views: 6,144
Posted By oldbobcat

I'm suspecting that the derailleur hanger or the...

I'm suspecting that the derailleur hanger or the cage has a subtle twist that throwing off the alignment of the chain as it passes from the derailleur to the sprocket. Visually, does the chain...
06-11-17, 09:27 PM
Replies: 52
Views: 3,174
Posted By oldbobcat

I like it too. Just because you and your local...

I like it too. Just because you and your local mechanics can't figure out how to make it work doesn't mean it doesn't.

Every few years somebody comes out with something new, and rather than...
06-06-17, 10:00 PM
Replies: 12
Views: 2,452
Posted By oldbobcat

My general fit algorithm is to first find a torso...

My general fit algorithm is to first find a torso angle that works, based on the kind of riding you do. Then find a saddle position that lets you maintain this torso angle without using the hands....
06-06-17, 09:53 PM
Replies: 12
Views: 2,452
Posted By oldbobcat

On my road bikes, the hub is always behind the...

On my road bikes, the hub is always behind the line of sight to the handlebar. Different strokes for different . . . y'know. I use 12 and 13 cm stems, depending on the frame's reach dimension. The...
06-06-17, 09:30 PM
Replies: 12
Views: 2,452
Posted By oldbobcat

You shouldn't be putting that much pressure on...

You shouldn't be putting that much pressure on the handlebar anyway. A balanced rider's center of gravity is generally over the bottom bracket.
06-06-17, 09:27 PM
Replies: 12
Views: 2,452
Posted By oldbobcat

A bike that puts the handlebar too far in front...

A bike that puts the handlebar too far in front of the front axle will have stability issues, but riders of normal proportions on fairly normally sized bikes will not find this a problem.
06-06-17, 09:10 PM
Replies: 12
Views: 2,452
Posted By oldbobcat

Your body contacts the bike at the hands, the...

Your body contacts the bike at the hands, the feet, and the pelvis. Weight distribution relative to the feet is more important than relative to the wheels.
06-04-17, 10:54 AM
Replies: 11
Views: 1,159
Posted By oldbobcat

The problem with smaller-than-standard...

The problem with smaller-than-standard chainrings, i.e. the 33t on a 110mm BCD, is that as the rings and chain wear, the chain might start riding on the crank spider flange instead of mating properly...
06-04-17, 10:30 AM
Replies: 125
Views: 6,675
Posted By oldbobcat

Pros have been running 53-44 and 53-46 for flat...

Pros have been running 53-44 and 53-46 for flat cobbled classics for decades, apparently without problem, and my first Campagnolo-equipped bike, a Raleigh International, came with a 52-45 chainset.
...
06-03-17, 08:12 PM
Replies: 17
Views: 1,485
Posted By oldbobcat

Chain rings look OK. You have a little bit of...

Chain rings look OK. You have a little bit of wear on the big one but it will work fine, once you put on a new chain.

You need a chain and cassette. Although I haven't seen the cassette, the...
06-02-17, 11:19 PM
Replies: 125
Views: 6,675
Posted By oldbobcat

When experimenting with spindle lengths you must...

When experimenting with spindle lengths you must keep the chainline in mind. Ideally, the centerline of the cassette or freewheel should be the same as the centerline of the chainrings. So in the...
06-02-17, 11:11 PM
Replies: 125
Views: 6,675
Posted By oldbobcat

On the front, half-step upshifts are easy since...

On the front, half-step upshifts are easy since the chain doesn't have far to climb. On downshifts, the chain would undershift, landing between the rings. It wouldn't jam, of course, but the chain...
06-01-17, 08:51 PM
Replies: 125
Views: 6,675
Posted By oldbobcat

Half-step was popular in the '60s and some of us...

Half-step was popular in the '60s and some of us were still using it in the early '70s. It makes a lot of sense from the rear derailleur's point of view since it gives you more gear range with less...
06-01-17, 08:38 PM
Replies: 32
Views: 1,931
Posted By oldbobcat

While you're looking a the crank, take a close...

While you're looking a the crank, take a close look at the point where the crank arm meets the chain ring "spider." It looks like a hairline crack is developing. It also looks like the crank too a...
06-01-17, 08:34 PM
Replies: 32
Views: 1,931
Posted By oldbobcat

For the crank to be hitting the chain, something...

For the crank to be hitting the chain, something has to be seriously bent, and that would be either the crank arm or the frame. When you eyeball down with the crank at horizontal, does it look...
06-01-17, 04:12 PM
Replies: 32
Views: 1,931
Posted By oldbobcat

First make sure nothing's broken, like a bent...

First make sure nothing's broken, like a bent derailleur or crank arm or chain ring.

Second, make sure the derailleur is properly positioned. That's 1-2mm above the tallest tooth of the big...
06-01-17, 03:57 PM
Replies: 125
Views: 6,675
Posted By oldbobcat

In terms of actual numbers I have no idea. But...

In terms of actual numbers I have no idea. But consider this. Your innermost cog has to be somewhere to the right of the centerline of the hub or the wheel will collapse. The centerline through the...
06-01-17, 03:38 PM
Replies: 24
Views: 7,709
Posted By oldbobcat

What he said, if you're using 6700 levers. If...

What he said, if you're using 6700 levers. If not, I'd probably still use the 6700 calipers, anyway. They're only heavier than Dura-Ace, which is considered the gold standard.

Regarding setup,...
06-01-17, 03:22 PM
Replies: 17
Views: 1,485
Posted By oldbobcat

That chain is badly worn. Get new one. You will...

That chain is badly worn. Get new one. You will also need a new cassette.

If you're interested, here's the explanation. The pins and rollers on a bike chain wear out. The pins get smaller on the...
05-05-17, 09:39 PM
Replies: 31
Views: 2,894
Posted By oldbobcat

Drashkum, your photo says a lot. First, your arms...

Drashkum, your photo says a lot. First, your arms are proportional to your legs, longer than average. They push your back upright, higher than it wants to be. Second, you're holding your head down,...
03-26-17, 10:38 PM
Replies: 8
Views: 925
Posted By oldbobcat

The 7.2 FX uses linear pull brakes. The Kool Stop...

The 7.2 FX uses linear pull brakes. The Kool Stop pad holders that will work with these are KS-VBHDL or KS-VBH2. The holders have dual-compound pads installed, and replacement pads for the holders...
07-12-16, 09:13 PM
Replies: 11
Views: 1,898
Posted By oldbobcat

Thanks for the heads-up, frenchfit. I've...

Thanks for the heads-up, frenchfit.

I've built up several wheels with M13-IIs in 700c. For strength to weight and price, they're hard to beat, and I'm glad the 27" fans can use 'em.
07-11-16, 09:59 PM
Replies: 11
Views: 1,898
Posted By oldbobcat

Thanks, mtnbike, for bringing that to my...

Thanks, mtnbike, for bringing that to my attention so courteously.
07-10-16, 05:52 PM
Replies: 5
Views: 1,040
Posted By oldbobcat

Well try it and see. Clockwise for closer in. As...

Well try it and see. Clockwise for closer in. As long as you don't force it, you won't brake (sic) it. Or if you're concerned, have the shop that sold you the bike adjust it.

Yes, it is a common...
07-10-16, 05:38 PM
Replies: 11
Views: 1,898
Posted By oldbobcat

I know of no one marketing 27" rims these days....

I know of no one marketing 27" rims these days. Bike companies stopped making bikes with these wheels in the early 1980s. Your local shop can get replacement wheels, however, if they have an account...
Forum: Road Cycling
07-03-16, 04:04 PM
Replies: 106
Views: 4,188
Posted By oldbobcat

OK, it's a sorry rider who slams his equipment by...

OK, it's a sorry rider who slams his equipment by starting a thread and defending it for two pages before he finds out something is broken.

I'm outta here.
Forum: Road Cycling
07-02-16, 10:27 PM
Replies: 106
Views: 4,188
Posted By oldbobcat

12strings, thanks for putting this in...

12strings, thanks for putting this in perspective.

It's a sorry workman who blames his tools.
07-01-16, 09:11 PM
Replies: 15
Views: 2,883
Posted By oldbobcat

You'll probably spend more converting it to a...

You'll probably spend more converting it to a flat bar than you probably paid for it.

If you're younger than 80, deal with it. It will grow on you.
07-01-16, 09:08 PM
Replies: 7
Views: 1,479
Posted By oldbobcat

Very lovely, Guy.

Very lovely, Guy.
07-01-16, 08:57 PM
Replies: 6
Views: 451
Posted By oldbobcat

Think about it a little. What moves when the bike...

Think about it a little. What moves when the bike is in motion but not when coasting?

Pedals, bottom bracket, chain, rear gear cluster, and chainrings. My hunch is if it's the bottom bracket or...
06-29-16, 10:00 PM
Replies: 7
Views: 1,109
Posted By oldbobcat

Tell us how you're feeling after a few weeks of...

Tell us how you're feeling after a few weeks of logging a hundred miles every few days.
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