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Search: Posts Made By: grumpus
Showing results 1 to 50 of 1000
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Forum: Bicycle Mechanics
04-24-24, 09:00 PM
Replies: 35
Views: 674
Posted By grumpus

That may be giving undue credit to the previous...

That may be giving undue credit to the previous guy.
Forum: Bicycle Mechanics
04-24-24, 08:58 PM
Replies: 28
Views: 325
Posted By grumpus

OP mentioned it at the top of the thread - didn't...

OP mentioned it at the top of the thread - didn't want to deal with multiple spacers.
Forum: Bicycle Mechanics
04-24-24, 08:10 PM
Replies: 58
Views: 1,302
Posted By grumpus

Wide doubles have been around since at least the...

Wide doubles have been around since at least the 1970s, they just weren't mainstream.
Forum: Bicycle Mechanics
04-24-24, 07:58 PM
Replies: 28
Views: 379
Posted By grumpus

Ah okay you got me. I just started from the top...

Ah okay you got me. I just started from the top again because the OP seems to be having difficulty approaching the problem methodically. Whatever is out of alignment you need to start from somewhere...
Forum: Bicycle Mechanics
04-24-24, 07:39 PM
Replies: 14
Views: 247
Posted By grumpus

Indeed - I foolishly believed what was probably a...

Indeed - I foolishly believed what was probably a mistranslation of "air reservoir" to "tyre" and assumed they had incorporated a low pressure outlet. I tried unsuccessfully to find an actual user...
Forum: Bicycle Mechanics
04-24-24, 06:29 PM
Replies: 28
Views: 379
Posted By grumpus

I do believe that's what I wrote, only in some...

I do believe that's what I wrote, only in some detail so we might hopefully get some useful data.
Forum: Bicycle Mechanics
04-24-24, 06:25 PM
Replies: 14
Views: 247
Posted By grumpus

I don't think I'd feel comfortable riding a tyre...

I don't think I'd feel comfortable riding a tyre I knew I couldn't fix at the roadside - I had this issue with a tubed tyre/rim combination and added a couple of larger steel levers to my on-bike...
Forum: Bicycle Mechanics
04-24-24, 03:19 PM
Replies: 28
Views: 379
Posted By grumpus

Take a wheel, check that the axle is not bent,...

Take a wheel, check that the axle is not bent, the bearings are properly adjusted and the rim is true. Fit it to the frame and measure the distance from each chainstay to the rim (this will probably...
Forum: Bicycle Mechanics
04-24-24, 02:53 PM
Replies: 35
Views: 674
Posted By grumpus

Small/small is fine if you do it right, you're...

Small/small is fine if you do it right, you're setting the chain as long as it can be which can be useful if you might want to fit a larger ring or sprocket. Big/big is harder to get wrong, you're...
Forum: Bicycle Mechanics
04-24-24, 02:00 PM
Replies: 4
Views: 79
Posted By grumpus

I wonder if a good quality V-brake noodle could...

I wonder if a good quality V-brake noodle could be cut down to do the job. Otherwise anyone with a mini lathe should be able to make a few.
Forum: Bicycle Mechanics
04-24-24, 01:37 PM
Replies: 21
Views: 284
Posted By grumpus

A Mole wrench was probably the first tool I ever...

A Mole wrench was probably the first tool I ever bought, they're good if you only have a rock.
Forum: Bicycle Mechanics
04-24-24, 01:19 PM
Replies: 14
Views: 247
Posted By grumpus

I have a similar portable low noise compressor,...

I have a similar portable low noise compressor, it's too convenient and makes me lazy - track pumps are good exercise and I should use them instead. IIRC it kicks in at 80 psi and runs to 120 psi so...
Forum: Bicycle Mechanics
04-24-24, 12:09 PM
Replies: 31
Views: 525
Posted By grumpus

Likely the onboard BMS has isolated the battery...

Likely the onboard BMS has isolated the battery because it's dropped below its minimum voltage. That's why I suggested going into the battery pack and connecting directly to the cells - they may not...
Forum: Bicycle Mechanics
04-24-24, 11:44 AM
Replies: 21
Views: 284
Posted By grumpus

Topeak FlyPaper self adhesive tube patches -...

Topeak FlyPaper self adhesive tube patches - someone on here recommended them, so I added them to several bikes' kit - I normally carry a couple of tubes so they're unlikely to be needed, but you...
Forum: Bicycle Mechanics
04-24-24, 11:24 AM
Replies: 21
Views: 284
Posted By grumpus

​​​​​​Remove the chainring, place it on a rock,...

​​​​​​Remove the chainring, place it on a rock, hit it with another rock, sorted. Much more fun than being sent home from the start of a ride, he might even make it to the end.
Forum: Bicycle Mechanics
04-24-24, 11:05 AM
Replies: 5
Views: 116
Posted By grumpus

ITYF yours is a 2019, the 2020 was 1x. I...

ITYF yours is a 2019, the 2020 was 1x.

I don't think you'll notice a difference* between 36 and 38 teeth, and shifting may suffer because chainrings are designed as matched sets - the ramps and...
Forum: Bicycle Mechanics
04-24-24, 08:47 AM
Replies: 3
Views: 83
Posted By grumpus

From what I can find online the tension screws...

From what I can find online the tension screws are the same as the grip screws, looks like an M4 grub screw. The part number of those appears to be 710845879432
Forum: Bicycle Mechanics
04-24-24, 08:31 AM
Replies: 38
Views: 739
Posted By grumpus

I think his point was that the skewers don't have...

I think his point was that the skewers don't have any extra requirements beyond just holding the wheels on. Yes they are trying to twist and rock out of the ends when you're doing anything other than...
Forum: Bicycle Mechanics
04-24-24, 08:16 AM
Replies: 1
Views: 113
Posted By grumpus

Yes, there's supposed to be a little tab in the...

Yes, there's supposed to be a little tab in the back of the lever retaining the end of the front actuator arm bit.
Forum: Bicycle Mechanics
04-24-24, 07:50 AM
Replies: 38
Views: 739
Posted By grumpus

Vertical dropout takes the pedaling force, which...

Vertical dropout takes the pedaling force, which skewer has to counter with horizontal dropout. Rim brake produces minimal vertical reaction force, which skewer has to counter with disc-brake. So...
Forum: Bicycle Mechanics
04-24-24, 07:21 AM
Replies: 15
Views: 314
Posted By grumpus

Cantilever setup is very flexible, with most...

Cantilever setup is very flexible, with most types you can tune the brake response if you understand the geometry.
Forum: Bicycle Mechanics
04-24-24, 07:09 AM
Replies: 7
Views: 252
Posted By grumpus

Both dropout slots should be the same width - if...

Both dropout slots should be the same width - if the drive side is closed up you really should bend it back into shape, rather than removing material. I'd use a large cold chisel to pry it apart,...
Forum: Bicycle Mechanics
04-24-24, 06:44 AM
Replies: 14
Views: 247
Posted By grumpus

It says on that page you can use it for tyres,...

It says on that page you can use it for tyres, and it can be set to shut off at the correct pressure. It appears to have 8 mm quick connect male attachment point, so you'll need an 8 mm female quick...
Forum: Bicycle Mechanics
04-24-24, 06:02 AM
Replies: 24
Views: 379
Posted By grumpus

As already stated, these are JIS - they work a...

As already stated, these are JIS - they work a lot better with the correct driver. I use bits of inner cable as tiny wire brushes to clean out crusty fastener heads.
Forum: Bicycle Mechanics
04-24-24, 05:46 AM
Replies: 28
Views: 325
Posted By grumpus

I'd just cut down an old stem.

I'd just cut down an old stem.
Forum: Bicycle Mechanics
04-22-24, 02:43 PM
Replies: 19
Views: 508
Posted By grumpus

Looks like a freewheel with failed bearings;...

Looks like a freewheel with failed bearings; possibly just a loose faceplate but that's never supposed to need adjusting or tightening, it's not a serviceable assembly.
Forum: Bicycle Mechanics
04-22-24, 02:26 PM
Replies: 31
Views: 525
Posted By grumpus

I suspect you mean brake cleaner, not hydraulic...

I suspect you mean brake cleaner, not hydraulic fluid.
Forum: Bicycle Mechanics
04-21-24, 06:50 PM
Replies: 48
Views: 25,628
Posted By grumpus

nothing nothing nothing nothing nothing nothing

There is nothing above that - post titles are a decoration, they should not be relied on to convey information that is not present in the content area of the window/text box etc.
Forum: Bicycle Mechanics
04-21-24, 06:25 PM
Replies: 31
Views: 525
Posted By grumpus

A BMS will refuse to charge such a heavily...

A BMS will refuse to charge such a heavily discharged battery, you need to get some volts in there for it to be recognised as a good(?) battery. If you can access the internal connections you can try...
Forum: Bicycle Mechanics
04-21-24, 05:56 PM
Replies: 35
Views: 765
Posted By grumpus

First put the tube in the tyre, then put the tyre...

First put the tube in the tyre, then put the tyre on the rim. It may take some manipulation to get the "extra" bit of tube to lie flat, and you have to be careful not to damage the valve stem.
Forum: Bicycle Mechanics
04-21-24, 05:41 PM
Replies: 29
Views: 660
Posted By grumpus

It is an answer, quite a feasible one on the face...

It is an answer, quite a feasible one on the face of it, but it's something of a moot point because it seems that the bolt head doesn't require surgery after all.
Forum: Bicycle Mechanics
04-21-24, 04:58 PM
Replies: 48
Views: 25,628
Posted By grumpus

He could have got 14 days or a $5,000 fine but...

He could have got 14 days or a $5,000 fine but I'll let him off with a caution.
Forum: Bicycle Mechanics
04-21-24, 04:48 PM
Replies: 48
Views: 25,628
Posted By grumpus

Ah, OK, no worries. You've mistyped something...

Ah, OK, no worries. You've mistyped something else now, there should be a [/QUOTE] between the text you quoted and the comment you added. I try to remember to preview each post before I submit it,...
Forum: Bicycle Mechanics
04-21-24, 04:11 PM
Replies: 48
Views: 25,628
Posted By grumpus

It doesn't have a title line that I can see.

It doesn't have a title line that I can see.
Forum: Bicycle Mechanics
04-21-24, 08:22 AM
Replies: 48
Views: 25,628
Posted By grumpus

You reply to a 15/22 year old thread and your...

You reply to a 15/22 year old thread and your entire contribution is "aw"?
Forum: Bicycle Mechanics
04-21-24, 08:16 AM
Replies: 27
Views: 762
Posted By grumpus

Assuming he's a wrench monkey in an LBS and wants...

Assuming he's a wrench monkey in an LBS and wants more work. Just being silly really.
Forum: Bicycle Mechanics
04-21-24, 08:04 AM
Replies: 29
Views: 660
Posted By grumpus

True - sounds like it might be fine, no need to...

True - sounds like it might be fine, no need to surmise otherwise.
Forum: Bicycle Mechanics
04-21-24, 08:01 AM
Replies: 27
Views: 762
Posted By grumpus

A mechanic who isn't too busy to care?

A mechanic who isn't too busy to care?
Forum: Bicycle Mechanics
04-21-24, 07:55 AM
Replies: 11
Views: 339
Posted By grumpus

For any future searches you may make, this is...

For any future searches you may make, this is called a steerer tube, or just steerer.
Forum: Bicycle Mechanics
04-21-24, 07:39 AM
Replies: 29
Views: 660
Posted By grumpus

You grind it with a mini carbide burr to move...

You grind it with a mini carbide burr to move each corner outwards - then the next size of hex key doesn't hang up on the corners and can be pounded in, so it engages with the part next to where you...
Forum: Bicycle Mechanics
04-21-24, 07:17 AM
Replies: 17
Views: 417
Posted By grumpus

That's a nice bike, a very well thought-out...

That's a nice bike, a very well thought-out specification. Is the clamp bolt straight, greased and moving smoothly? It should be safe to assume the seatpost is a good fit in the frame ...
Forum: Bicycle Mechanics
04-19-24, 12:08 PM
Replies: 22
Views: 677
Posted By grumpus

Your barrel adjuster is screwed right down, no...

Your barrel adjuster is screwed right down, no further adjustment available, so you'll need to let the cable out a bit. Loosen the pinch bolt, gently pull the lever so a small amount of cable slips...
Forum: Bicycle Mechanics
04-19-24, 11:57 AM
Replies: 43
Views: 1,070
Posted By grumpus

The chain length is correct for big/big, you...

The chain length is correct for big/big, you shouldn't/can't shorten it. With luck cranking in the B screw will help clearance and tension on the small ring - if it doesn't go quite far enough you...
Forum: Bicycle Mechanics
04-18-24, 05:51 PM
Replies: 32
Views: 937
Posted By grumpus

Je suis désolé, excusez moi s'il vous plâit Mlle....

Je suis désolé, excusez moi s'il vous plâit Mlle. (That's about as far as I can get on my own.)
Forum: Bicycle Mechanics
04-18-24, 04:57 PM
Replies: 32
Views: 937
Posted By grumpus

In the photos he posted the ferrules are clearly...

In the photos he posted the ferrules are clearly visible
Forum: Bicycle Mechanics
04-18-24, 10:20 AM
Replies: 35
Views: 1,173
Posted By grumpus

Position, push, feeble click, adjust. Position,...

Position, push, feeble click, adjust. Position, push, push harder, push really hard, adjust. GOTO 0.
I should probably take it apart and figure out what's wrong.
Forum: Recumbent
04-18-24, 07:59 AM
Replies: 3
Views: 395
Posted By grumpus

I'm not familiar with the Weber system but it...

I'm not familiar with the Weber system but it seems all you have to do is pick a trailer that attaches to the rear axle, then replace its coupling with the right size of Weber drawbar connector.
Forum: Bicycle Mechanics
04-18-24, 06:21 AM
Replies: 31
Views: 12,992
Posted By grumpus

Pliers. I don't think that would work if the...

Pliers. I don't think that would work if the skewer was properly tight. An angle grinder will work every time, just don't spoil the paint with a shower of sparks.
Forum: Bicycle Mechanics
04-18-24, 06:08 AM
Replies: 35
Views: 1,173
Posted By grumpus

Just like a tiny air hammer - an interesting idea.

Just like a tiny air hammer - an interesting idea.
Forum: Bicycle Mechanics
04-18-24, 05:59 AM
Replies: 22
Views: 677
Posted By grumpus

Properly adjusted and lubricated, with good...

Properly adjusted and lubricated, with good friction material and cables, shorter side-pulls like these are perfectly adequate. Some of us enjoy riding old bikes and prefer to leave them original,...
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