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Search: Posts Made By: Kimmo
Showing results 1 to 50 of 1000
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Forum: Road Cycling
04-22-24, 07:56 PM
Replies: 44
Views: 912
Posted By Kimmo

As I said earlier, it seems rather specific to be...

As I said earlier, it seems rather specific to be an accident; I'd suggest it only looks strange because you're not privy to the previous owner's evaluation criteria.

As an extension of this...
Forum: Road Cycling
04-22-24, 07:38 PM
Replies: 44
Views: 912
Posted By Kimmo

Or probably the same for new vs worn. But as...

Or probably the same for new vs worn. But as folks are trying to convince you, there's no way it can't average out the same; the only way the ratio of crank turns to wheel turns can vary from the...
Forum: Road Cycling
04-22-24, 07:32 PM
Replies: 44
Views: 912
Posted By Kimmo

10t jumps were the rule before big rings were...

10t jumps were the rule before big rings were elaborated on to include the vast improvement of shift gates and lift pins, which brought the unfortunate restriction of being specific to a...
Forum: Road Cycling
04-21-24, 08:19 PM
Replies: 44
Views: 912
Posted By Kimmo

Given the Miche cassette, which allowed bespoke...

Given the Miche cassette, which allowed bespoke combinations like this 14-26 with two 2t gaps and a 3t gap, I'm going to assume the previous owner put a fair bit of thought into ratios and that the...
Forum: Road Cycling
04-21-24, 07:58 PM
Replies: 24
Views: 709
Posted By Kimmo

The TCX has a round post, doesn't it? If so,...

The TCX has a round post, doesn't it? If so, replace it with the lightest one you can find. Some carbon posts are way overbuilt.
Forum: Road Cycling
04-21-24, 07:39 PM
Replies: 24
Views: 709
Posted By Kimmo

Weight is overrated according to the science, but...

Weight is overrated according to the science, but this overlooks the placebo angle and the fact light bikes are more fun; on the other hand frame weight is probably not such a big deal because you...
Forum: Bicycle Mechanics
04-21-24, 12:08 PM
Replies: 7
Views: 269
Posted By Kimmo

The freehubs are stupid with the nylon bushing...

The freehubs are stupid with the nylon bushing which needs frequent cleaning and lubing, otherwise the chain goes slack when coasting at speed and the cranks turn when you walk the bike.

If the...
Forum: Bicycle Mechanics
04-21-24, 12:02 PM
Replies: 20
Views: 343
Posted By Kimmo

The cog probably matters via chain tension? ...

The cog probably matters via chain tension?

Maybe see if you can get the FD closer to the rings.
Forum: Bicycle Mechanics
04-13-24, 05:47 PM
Replies: 16
Views: 472
Posted By Kimmo

When you crack it open, you're looking for a tiny...

When you crack it open, you're looking for a tiny pawl, a little part about 6mm across, pivoting on a little pin about 1.5mm thick. It's actuated by a little hairspring, which is too weak to overcome...
Forum: Bicycle Mechanics
04-13-24, 05:34 PM
Replies: 10
Views: 413
Posted By Kimmo

Was there a new cassette on the new wheel, that...

Was there a new cassette on the new wheel, that you're using with the old chain?
Forum: Bicycle Mechanics
04-13-24, 05:29 PM
Replies: 39
Views: 1,611
Posted By Kimmo

Never come across this 'laminated' housing; the...

Never come across this 'laminated' housing; the fourth kind that Suntour talks about, where the liner and outer sheath are somehow 'mechanically locked' with the housing wire... Suspect it wasn't...
Forum: Road Cycling
04-10-24, 04:25 PM
Replies: 2,345
Views: 353,411
Posted By Kimmo

The house seems pretty. The bike? Vomit

The house seems pretty.

The bike? Vomit
Forum: Road Cycling
03-08-24, 07:42 PM
Replies: 29
Views: 1,428
Posted By Kimmo

Here's some better info about actuation ratios:...

Here's some better info about actuation ratios: https://bike.bikegremlin.com/1278/bicycle-rear-derailleur-compatibility/

Additionally,if you use an old Dura-Ace RD with a non DA shifter, you can...
Forum: Bicycle Mechanics
02-22-24, 04:18 PM
Replies: 48
Views: 1,548
Posted By Kimmo

Folks assume you need a lot of skill to work on...

Folks assume you need a lot of skill to work on fancy gear, but actually you don't need so much; just a basic level of competence, and the ability to look up and understand workshop manuals.
...
Forum: Bicycle Mechanics
02-22-24, 01:37 PM
Replies: 23
Views: 1,019
Posted By Kimmo

One thing not mentioned is to expect a slight hop...

One thing not mentioned is to expect a slight hop on most metal rims where it's joined; don't try to get the radial true perfect in that spot. You could start with a 20h, but it'll require a lot more...
Forum: Bicycle Mechanics
02-05-24, 04:31 AM
Replies: 25
Views: 1,415
Posted By Kimmo

I'm only concerned with durability too; as I...

I'm only concerned with durability too; as I mentioned, I consider drag to be a negligible consideration.

I imagine a small amount of preload is optimal for durability, with the optimal amount...
Forum: Bicycle Mechanics
02-05-24, 12:01 AM
Replies: 25
Views: 1,415
Posted By Kimmo

You don't need perfect adjustment; you just need...

You don't need perfect adjustment; you just need good adjustment.

There's quite a large window of acceptable preload - yes, the bearings should be getting slightly squashed; this is what ensures...
Forum: Bicycle Mechanics
02-04-24, 07:35 PM
Replies: 25
Views: 1,415
Posted By Kimmo

This bit makes me think it had play before.

This bit makes me think it had play before.
Forum: Bicycle Mechanics
02-04-24, 07:30 PM
Replies: 105
Views: 3,824
Posted By Kimmo

You know what would be nice? If Wheels Mfg...

You know what would be nice?

If Wheels Mfg would make direct mount versions of their hangers for more recent bikes... The double hanger with two mounting bolts situation is just awful.

Probably...
Forum: Road Cycling
02-04-24, 04:21 PM
Replies: 2,345
Views: 353,411
Posted By Kimmo

Well, the rear is a tricolour; that's dark grey....

Well, the rear is a tricolour; that's dark grey. The other bike like this was built up with the same gear except a 7400 rear to go with the 7700 front, and along with the pedals, I thought the silver...
Forum: Bicycle Mechanics
02-04-24, 01:19 PM
Replies: 105
Views: 3,824
Posted By Kimmo

Haven't read the thread, just replying to the OP...

Haven't read the thread, just replying to the OP -

Rim brake Di2 is a great way to minimise your maintenance. For extra points, a frame with a threaded BB. But if your frame has a sketchy hanger...
Forum: Road Cycling
02-04-24, 01:12 PM
Replies: 27
Views: 1,046
Posted By Kimmo

Okay, like I said, I'm rusty - I remembered...

Okay, like I said, I'm rusty - I remembered wrong; Shadow came out before 10s. Can't imagine why you shouldn't get a Shadow RD in that case.

By the way, if you want more reliable mechanical...
Forum: Road Cycling
02-04-24, 01:09 PM
Replies: 21
Views: 978
Posted By Kimmo

I got one, and it seemed nearly as nice as my...

I got one, and it seemed nearly as nice as my Edco one. Problem was, it was the wrong range, and when I returned it I didn't get my money back 🤬
Forum: Road Cycling
02-04-24, 04:55 AM
Replies: 27
Views: 1,046
Posted By Kimmo

​​​​​​ Nothing, if you have a compatible...

​​​​​​
Nothing, if you have a compatible shifter. Not the same actuation ratio as earlier derailers though, so not backwards compatible. Your bike isn't 9s.
Forum: Road Cycling
02-04-24, 04:47 AM
Replies: 21
Views: 978
Posted By Kimmo

Yeah. Actually come to think of it, you can find...

Yeah. Actually come to think of it, you can find almost the same thing on AliExpress for about a quarter of the price...
Forum: Road Cycling
02-03-24, 06:26 PM
Replies: 21
Views: 978
Posted By Kimmo

My inclination is to save on drivetrain expense...

My inclination is to save on drivetrain expense by changing out chains early, and treating chainrings and cassettes as something I don't want to replace. Chains are cheaper than the other drivetrain...
Forum: Road Cycling
02-03-24, 05:14 PM
Replies: 27
Views: 1,046
Posted By Kimmo

RD-7800 is probably the latest and greatest that...

RD-7800 is probably the latest and greatest that will work, if I remember right... I think they changed the cable pull when 11s came along? I know they changed it at 10s for MTB. But before that, you...
Forum: Road Cycling
02-03-24, 05:05 PM
Replies: 2,345
Views: 353,411
Posted By Kimmo

Steerer yet to be trimmed ...

Steerer yet to be trimmed
https://cimg4.ibsrv.net/gimg/bikeforums.net-vbulletin/2000x1136/20240127_105727_9a3af43d50434bce62122a6e3d475a66a85789ff.jpg...
Forum: Road Cycling
08-26-23, 02:58 AM
Replies: 40
Views: 3,055
Posted By Kimmo

Hah. Was going to point out you can easily lace a...

Hah. Was going to point out you can easily lace a 24h rim to a 32h hub if it's not straight pull.
Forum: Road Cycling
08-26-23, 02:47 AM
Replies: 87
Views: 5,372
Posted By Kimmo

I can totally understand this attitude, as a...

I can totally understand this attitude, as a hangover from the days when carbon brake tracks were still being figured out, but it's been pretty well sorted by now.

And assuming the resin matrix is...
Forum: Road Cycling
08-13-23, 07:50 AM
Replies: 73
Views: 3,252
Posted By Kimmo

I threw a cheap set on my road bike last...

I threw a cheap set on my road bike last century... They didn't hang on so well to ye olde skinny bars, but then neither did stems... nearly good enough IIRC. Come to think of it, that size was...
Forum: Road Cycling
08-13-23, 07:23 AM
Replies: 87
Views: 5,372
Posted By Kimmo

Is there any such thing as a modern deep profile...

Is there any such thing as a modern deep profile in an aluminium tubular? Otherwise you'd be getting pretty heavy, but OTOH, apparently that only matters to your monkey brain...
Forum: Road Cycling
08-13-23, 07:19 AM
Replies: 87
Views: 5,372
Posted By Kimmo

Funny to think how much of the feeling of light...

Funny to think how much of the feeling of light wheels must be placebo then...
Forum: Road Cycling
08-12-23, 05:57 PM
Replies: 87
Views: 5,372
Posted By Kimmo

Come to think of it, aero aside, if the pack's...

Come to think of it, aero aside, if the pack's speed only varies slowly, it might consume some effort to maintain a more consistent speed on really light wheels, and of course it does take more...
Forum: Road Cycling
08-12-23, 05:48 PM
Replies: 87
Views: 5,372
Posted By Kimmo

[citation required] Polar moment of inertia,...

[citation required]

Polar moment of inertia, anyone? This is kindergarten stuff. How in F did that comment get a like?
Forum: Road Cycling
08-12-23, 05:33 PM
Replies: 87
Views: 5,372
Posted By Kimmo

Um, in a pack, aero drag is relatively...

Um, in a pack, aero drag is relatively negligible, and the air is quite dirty (turbulent) around the height of the wheels, so that's highly debatable.

As for aero drag having a significant effect...
Forum: Road Cycling
08-12-23, 05:17 PM
Replies: 29
Views: 1,576
Posted By Kimmo

This is a no-brainer. Look is the bomb, as is...

This is a no-brainer. Look is the bomb, as is Chorus, and it has a triple! The triple basically means the drivetrain can be as close and/or as wide as you like, unlike what another poster said....
Forum: Road Cycling
08-12-23, 04:49 PM
Replies: 87
Views: 5,372
Posted By Kimmo

This seems to make sense; nobody's said why it...

This seems to make sense; nobody's said why it doesn't.

Although if you want the fastest-possible accelerating wheel, I'd say it would be disc - a few more spokes on the front and a bit more...
Forum: Road Cycling
08-08-23, 06:19 PM
Replies: 35
Views: 2,098
Posted By Kimmo

If it was me, I'd try find a lightly-used example...

If it was me, I'd try find a lightly-used example of a bike that was the duck's guts like ten years ago; you should be able to find one that can take a 28mm tyre without too much trouble.
...
Forum: Road Cycling
07-22-23, 06:56 PM
Replies: 33
Views: 2,093
Posted By Kimmo

The replies so far seem to lack some crucial...

The replies so far seem to lack some crucial info.

For a start, what about tubulars? I'd argue the option is somewhat more relevant when you're considering carbon wheels... You probably already...
Forum: Road Cycling
05-29-23, 02:58 AM
Replies: 22
Views: 9,915
Posted By Kimmo

This thread needs pics now

This thread needs pics now
Forum: Road Cycling
05-06-23, 07:08 PM
Replies: 39
Views: 1,647
Posted By Kimmo

+1 - modern 50s seem like pretty fine general...

+1 - modern 50s seem like pretty fine general purpose wheels if they're light enough for climbing.

I cheated and made mine tubulars; they're lighter than any lightweight box section clincher....
Forum: Road Cycling
05-06-23, 07:04 PM
Replies: 39
Views: 1,647
Posted By Kimmo

I call bull**** - at mach 45 he'd burn up.

I call bull**** - at mach 45 he'd burn up.
Forum: Road Cycling
05-06-23, 06:59 PM
Replies: 4
Views: 390
Posted By Kimmo

Wow, that's a pretty nifty thing. They just need...

Wow, that's a pretty nifty thing. They just need to come up with a nice way to make the up and down positions adjustable.
Forum: Road Cycling
05-06-23, 06:23 PM
Replies: 7
Views: 451
Posted By Kimmo

That looks pretty minimal... I decided the stem...

That looks pretty minimal... I decided the stem wasn't a place to skimp on metal after I tried a light one, got too much flex with a 100g stem. The Zipp at around 140 was the ticket for me.
Forum: Road Cycling
05-06-23, 05:58 PM
Replies: 7
Views: 451
Posted By Kimmo

Anyone got the old style in 120 they'd like to...

Anyone got the old style in 120 they'd like to swap for the new style? It has the same stack height.
Forum: Road Cycling
05-05-23, 08:25 PM
Replies: 7
Views: 451
Posted By Kimmo

Zipp Service Course SL stem varieties?

I have one of these in 100mm, and it's pretty damn sweet except for the fact it's sized for a bike a size too large for me.
...
Forum: Road Cycling
05-04-23, 02:53 PM
Replies: 7
Views: 433
Posted By Kimmo

I could directly mount a lot of stuff onto it,...

I could directly mount a lot of stuff onto it, though
Forum: Road Cycling
05-04-23, 04:41 AM
Replies: 7
Views: 433
Posted By Kimmo

Aside from that being for a minivelo, it has some...

Aside from that being for a minivelo, it has some weird tt-style v-brake arrangement by the look of it.
Forum: Road Cycling
05-04-23, 04:39 AM
Replies: 7
Views: 433
Posted By Kimmo

I'm not even getting to the part where I try to...

I'm not even getting to the part where I try to weed out the tapered steerers. The only real page I can find says out of stock. The rest is junk...

Get a load of this crap:...
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