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Search: Posts Made By: grumpus
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03-28-24, 01:37 PM
Replies: 22
Views: 366
Posted By grumpus

Actually you did dish it, just to zero offset.

Actually you did dish it, just to zero offset.
03-28-24, 11:11 AM
Replies: 86
Views: 1,859
Posted By grumpus

Is the Sturmey Archer 3 speed hub with cassette...

Is the Sturmey Archer 3 speed hub with cassette no good?
03-28-24, 11:09 AM
Replies: 86
Views: 1,859
Posted By grumpus

It was probably 22 32 44 on the front, so 28 to...

It was probably 22 32 44 on the front, so 28 to 98 gear inches, seems reasonable for riding roads and cycle tracks. I was going to remove all the accessories and turn it back into a proper off road...
03-28-24, 10:42 AM
Replies: 20
Views: 296
Posted By grumpus

The axle lock nuts should bite into the inner...

The axle lock nuts should bite into the inner faces of the fork ends to secure the wheel, without needing the qr to add much grip on the outside - sounds like you just didn't tighten the qr enough,...
03-28-24, 06:32 AM
Replies: 7
Views: 143
Posted By grumpus

If you have a friendly local machine shop, ask...

If you have a friendly local machine shop, ask for some 0.004" shim stock, or they could even turn down a slightly larger seatpost to fit. Or just bodge it with a Coke can like everyone else - be...
03-27-24, 02:07 PM
Replies: 20
Views: 318
Posted By grumpus

Ah, I interpreted "really untrue" as more than a...

Ah, I interpreted "really untrue" as more than a spoke's worth, so ignore most of what I wrote. I wouldn't replace a wheel because of a few broken spokes, I'd prefer not to replace it if all the...
03-27-24, 01:50 PM
Replies: 5
Views: 121
Posted By grumpus

I think so, but I wouldn't bet the farm, because...

I think so, but I wouldn't bet the farm, because there's usually an oddball somewhere to make things complicated.
03-27-24, 01:11 PM
Replies: 5
Views: 121
Posted By grumpus

That is the standard, I don't know why, but it is.

That is the standard, I don't know why, but it is.
03-27-24, 12:45 PM
Replies: 12
Views: 207
Posted By grumpus

I'm a fan - I have at various times used Big...

I'm a fan - I have at various times used Big Apple, Super Moto, Fat Frank, Crazy Bob, all good tyres, they roll well and soak up the bumps too. Mostly pretty reasonable prices, Super Moto costs a bit...
03-27-24, 10:38 AM
Replies: 17
Views: 287
Posted By grumpus

​​​​​​That's a good ballpark method on a new...

​​​​​​That's a good ballpark method on a new build, but if the chain is already on you can still check it with your thumb, while pedalling with the other hand. Even if you go into the spokes you'll...
03-27-24, 10:26 AM
Replies: 26
Views: 449
Posted By grumpus

You'll have problems getting that behind many...

You'll have problems getting that behind many cranks. I've seen people use a universal 2/3 leg puller, but the problem with those is stopping the hooks from slipping off. You could maybe cut a...
03-27-24, 10:11 AM
Replies: 86
Views: 1,859
Posted By grumpus

My MTB utility bike, I fitted a road cassette...

My MTB utility bike, I fitted a road cassette 12-21 so I had plenty of close gears, no need for anything extra low.
03-27-24, 09:14 AM
Replies: 76
Views: 16,199
Posted By grumpus

If you're already making cheap chains it's not...

If you're already making cheap chains it's not hard to stamp them with "KMC" instead of whatever you used otherwise.
03-27-24, 09:07 AM
Replies: 20
Views: 318
Posted By grumpus

Don't know, I don't use them. But I have fixed a...

Don't know, I don't use them. But I have fixed a lot of wheels, and I'd be concerned that your rim is deformed - there's no point trying to true a bent rim, you'll end up with very uneven spoke...
03-27-24, 08:43 AM
Replies: 26
Views: 449
Posted By grumpus

Is it worth the effort for a few uses? Just cut...

Is it worth the effort for a few uses? Just cut the two threads in some cold rolled round bar - done; you could knurl it or mill flats for easier use. And you'd have to mount the crank on an axle (or...
03-27-24, 08:17 AM
Replies: 76
Views: 16,199
Posted By grumpus

There have been instances of fake Shimano chains...

There have been instances of fake Shimano chains turning up, I would be surprised if it was confined to Shimano.
03-27-24, 07:55 AM
Replies: 17
Views: 287
Posted By grumpus

Before attaching the cable, push the derailleur...

Before attaching the cable, push the derailleur onto low gear by hand, adjust the low limit screw so it shifts easily onto the inner sprocket but with no sign of wanting to go further. Repeat with...
03-27-24, 07:34 AM
Replies: 26
Views: 449
Posted By grumpus

Easy enough to make one, find a buddy with a...

Easy enough to make one, find a buddy with a lathe.
03-27-24, 07:20 AM
Replies: 86
Views: 1,859
Posted By grumpus

I've owned a few triples, all MTB 3x7. The only...

I've owned a few triples, all MTB 3x7. The only new bike I've ever bought came with a 32-52 chainset, but no 42t, and since then I've mostly been using what came to be known as a compact double...
03-27-24, 06:40 AM
Replies: 136
Views: 3,247
Posted By grumpus

I can't be bothered, I'm not interested in...

I can't be bothered, I'm not interested in prolonging this discussion. I'm sure you're much more intelligent and correct than everyone else. Well done.
03-25-24, 07:40 PM
Replies: 4
Views: 258
Posted By grumpus

I wouldn't be too sure about that - welded 531...

I wouldn't be too sure about that - welded 531 has a tendency to crack, that's why it was replaced by 631 which can be TIG welded.
03-25-24, 07:05 PM
Replies: 12
Views: 207
Posted By grumpus

I'd be surprised if the rims are actually 1.5"...

I'd be surprised if the rims are actually 1.5" wide; the standard way of describing the width of a rim is the internal width in millimetres - when you know that you can calculate appropriate tyre...
03-25-24, 05:47 PM
Replies: 29
Views: 750
Posted By grumpus

It's mainly important when someone says "my bike...

It's mainly important when someone says "my bike has n gears" and 'n' is more gears than you have - you then inform them that actually they have fewer, because of all the duplicates.
03-25-24, 03:37 PM
Replies: 86
Views: 1,859
Posted By grumpus

Why would you not?

Why would you not?
03-25-24, 03:31 PM
Replies: 86
Views: 1,859
Posted By grumpus

Many mid-drive e-bikes can't really have multiple...

Many mid-drive e-bikes can't really have multiple chainrings, and don't need them anyway; there's nothing about a hub-motor bike that would stop it from having a front derailleur, although other...
03-25-24, 02:15 PM
Replies: 11
Views: 335
Posted By grumpus

Why not just put the ring in the triple middle...

Why not just put the ring in the triple middle position? Then, if the chainline was right before, it will still be good. And as someone else said, why go to an eight speed cassette when your current...
03-25-24, 01:23 PM
Replies: 136
Views: 3,247
Posted By grumpus

But since then you've created various straw men,...

But since then you've created various straw men, and persisted in not getting the point, in a way that makes it look like you're out to "win" something, even though it looks from here like you've...
03-23-24, 06:42 PM
Replies: 38
Views: 740
Posted By grumpus

Post #9 above mentions the difficulty he had...

Post #9 above mentions the difficulty he had trying to measure it accurately.
03-23-24, 06:06 PM
Replies: 13
Views: 394
Posted By grumpus

Ah, it makes perfect sense when you know.

Ah, it makes perfect sense when you know.
03-23-24, 04:17 PM
Replies: 16
Views: 294
Posted By grumpus

I think it's between the two, about 11 mm, but I...

I think it's between the two, about 11 mm, but I don't recall.
03-23-24, 02:10 PM
Replies: 13
Views: 343
Posted By grumpus

Or jam in some ball bearings if the gaps are...

Or jam in some ball bearings if the gaps are slightly smaller than a common ball size. I just wouldn't want my braking to depend on this cobbled together arrangement, coaster brakes are dodgy enough...
03-23-24, 01:04 PM
Replies: 13
Views: 394
Posted By grumpus

The thing about dad jokes is you know they're...

The thing about dad jokes is you know they're terrible but you tell them anyway, can't resist ... well, some people can, but I can only sometimes.
03-23-24, 12:55 PM
Replies: 38
Views: 740
Posted By grumpus

Does the head tube show signs of reaming and...

Does the head tube show signs of reaming and facing at both ends? Possibly before paint. If it doesn't then that's an easy place to start, otherwise I'd be inclined to tap it on the front with a...
03-23-24, 12:11 PM
Replies: 16
Views: 294
Posted By grumpus

Except it's eight splines, so you want something...

Except it's eight splines, so you want something square not hexagonal and a bit less than a half inch.
03-23-24, 12:03 PM
Replies: 136
Views: 3,247
Posted By grumpus

Yours is probably the more correct way. I've done...

Yours is probably the more correct way. I've done some really dodgy hacks, like tying a bent bike between two cars and pulling until it was straight again - I like to think I'm a bit of a redneck.
03-23-24, 11:06 AM
Replies: 21
Views: 508
Posted By grumpus

Presumably that said "I will pass this on to our...

Presumably that said "I will pass this on to our technical people ..."
03-23-24, 11:02 AM
Replies: 13
Views: 394
Posted By grumpus

Sorry but I have to say this, because nobody else...

Sorry but I have to say this, because nobody else did:

The difference is 110.

Ba-dum-tish. Thank you very much, I'm here all week etc.


​​​​​
03-23-24, 10:49 AM
Replies: 16
Views: 294
Posted By grumpus

I find Amazon, free next day delivery or...

I find Amazon, free next day delivery or sometimes even same day, is a great hack. But otherwise can you find something square that fits well enough?
03-23-24, 08:57 AM
Replies: 136
Views: 3,247
Posted By grumpus

My 2x4 method is not your 2x4 method - I just put...

My 2x4 method is not your 2x4 method - I just put the two pieces inside the chainstays next to the dropouts and lever them against each other - if the ends are 6 inches above the stays and the pieces...
03-23-24, 08:36 AM
Replies: 136
Views: 3,247
Posted By grumpus

Tell me about it. I was replacing the rear ends...

Tell me about it. I was replacing the rear ends on a frame, and when I took out the old pieces the seat stays sprang out a load, probably because the brake bridge was forced in. I slotted in the new...
03-23-24, 08:21 AM
Replies: 136
Views: 3,247
Posted By grumpus

You're the one telling a pro mechanic his methods...

You're the one telling a pro mechanic his methods are wrong, when they're SOP and "good enough". But the discussion got turned around and from "insignificantly small" fractional degree changes in...
03-21-24, 07:26 PM
Replies: 136
Views: 3,247
Posted By grumpus

Yeah but do you have "metrology instruments"? Do...

Yeah but do you have "metrology instruments"? Do you even have a calibration certificate for your eyecrometer?
03-21-24, 06:57 PM
Replies: 19
Views: 342
Posted By grumpus

Looks to me that the hanger is bent in, and...

Looks to me that the hanger is bent in, and that's what put the derailleur into the spokes.
03-21-24, 01:57 PM
Replies: 25
Views: 725
Posted By grumpus

It will probably work better than trying to shift...

It will probably work better than trying to shift a road derailleur with a MTB shifter.
03-21-24, 01:54 PM
Replies: 25
Views: 725
Posted By grumpus

Did you miss the bit where he's already done the...

Did you miss the bit where he's already done the conversion and just needs to get the front mech working?
03-21-24, 01:42 PM
Replies: 32
Views: 835
Posted By grumpus

I use dummy dropouts with the QR, a few thick...

I use dummy dropouts with the QR, a few thick washers does the same job. I'm not seeing any advantage in clamping the assembly in a vise, although I could.
Forum: Recumbent
03-20-24, 02:36 PM
Replies: 4
Views: 264
Posted By grumpus

On derailleur bikes it's generally easier to fit...

On derailleur bikes it's generally easier to fit the chainguard to yourself than the bike - get some cheap gaiters. Or you could try a different chain lubrication approach: wax lube is said by it's...
03-20-24, 02:10 PM
Replies: 25
Views: 725
Posted By grumpus

3. Fit a MTB front mech. 4. Figure out which...

3. Fit a MTB front mech.
4. Figure out which Shiftmate will work.
03-20-24, 01:09 PM
Replies: 32
Views: 835
Posted By grumpus

This...

This (https://www.parktool.com/en-int/product/axle-vise-av-1?category=Hub+%26+Axle) is the one you'll more often see in bike shops, I think....
03-20-24, 10:07 AM
Replies: 18
Views: 405
Posted By grumpus

And if it's really tight, like tandem tight, have...

And if it's really tight, like tandem tight, have someone else lend a hand.
Showing results 1 to 50 of 1000
 


 
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