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Search: Posts Made By: sch
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03-18-24, 03:57 PM
Replies: 5
Views: 423
Posted By sch

How high is 'high potassium'? Renal function...

How high is 'high potassium'? Renal function has to be severely impaired before potassium becomes a problem.
There are a few BP meds that can bump potassium but not many. IrideO1's post has an...
01-13-24, 11:32 AM
Replies: 28
Views: 1,704
Posted By sch

Probably a reflection of the POV expressed in...

Probably a reflection of the POV expressed in this article: https://silca.cc/blogs/silca/hydrogen-embrittlement-can-you-really-break-a-chain

FWIW I used a pHydrion 1-13 range pH strip to check pH...
10-04-23, 02:34 PM
Replies: 18
Views: 1,312
Posted By sch

FWIW I recently installed a GRX 46/30 11 spd...

FWIW I recently installed a GRX 46/30 11 spd crank on a road bike with 68mm BB. I had a Di2 FD and the FD was both
too high on the 'braze-on' mount and would not extend out far enough to reach the...
09-25-23, 09:39 PM
Replies: 7
Views: 451
Posted By sch

Reinstall the bolt and 'dustcap'. Then with the...

Reinstall the bolt and 'dustcap'. Then with the dustcap reasonably tight, not Schwartzenegger tight, use allen
wrench to remove the bolt and the crank will come off the axle splines with the bolt....
08-26-23, 01:57 PM
Replies: 4
Views: 340
Posted By sch

The 20/25 tube will start with a smaller...

The 20/25 tube will start with a smaller diameter, which when inflated will stretch the tube more. If the tube
has any imperfection/scratch/thin area then that will provide a potential trouble area....
08-04-23, 07:26 AM
Replies: 9
Views: 551
Posted By sch

Shimano Tech Docs

Maybe my googlefu has failed, but it seems the Shimano has mucked up their tech docs area and, where you could
find the DM SM Exploded Views etc for time out of mind bicycle products and the...
04-05-23, 03:21 PM
Replies: 42
Views: 1,956
Posted By sch

One possible reason is the pedal(s) are an...

One possible reason is the pedal(s) are an uncommon French threading which is 14Mx1.25mm, these are about 0.050" or more undersized
compared to the usual 9/16x20TPI pedal thread so they screw in...
03-28-23, 09:50 PM
Replies: 11
Views: 573
Posted By sch

When road triples went from 52/42/30 to...

When road triples went from 52/42/30 to 52(50)/39/30 the FD needed a little more vertical depth on the inside to cover the
39 being smaller than the 42 in diameter. So an FD for 42t mid has at least...
03-16-23, 04:02 PM
Replies: 5
Views: 783
Posted By sch

Ball bearing or sleeve? Ceramic balls can be run...

Ball bearing or sleeve? Ceramic balls can be run without lube but in this application it makes little to no difference,
probably measured in microwatts. If shipped without lube, that is the way I...
01-06-23, 03:25 PM
Replies: 15
Views: 389
Posted By sch

I have had problems alluded to by Irideo01, when...

I have had problems alluded to by Irideo01, when the cable end is inserted into the socket there is frequently a palpable
'double bump' that is not always felt IME but when it is unless that second...
10-30-22, 08:38 AM
Replies: 66
Views: 2,482
Posted By sch

This is sometimes a problem, as BF has a short...

This is sometimes a problem, as BF has a short attention span and logs you out mid-typing, which it doesn't tell you til you click
submit reply and then wipes out your post. If the back arrow...
10-19-22, 01:35 PM
Replies: 4
Views: 288
Posted By sch

A left handed drill is sometimes more useful for...

A left handed drill is sometimes more useful for this purpose as it will back the screw out when friction increases.
Left hand drill sets are on amazon for under $20. A sharp pointed center punch to...
07-18-22, 03:32 PM
Replies: 42
Views: 2,486
Posted By sch

I had one class in a spin class at the YMCA...

I had one class in a spin class at the YMCA perhaps 10 yrs ago. The bikes then, had a flywheel with a friction belt that
the rider could tighten to whatever resistance desired. At the end of the...
06-17-22, 09:27 AM
Replies: 5
Views: 488
Posted By sch

IME (3 episodes of a derailler malfunction) all...

IME (3 episodes of a derailler malfunction) all were due to cable problems: two for apparently good plugins of cable ends
that were not, it turned out that there are two 'pops' or 'clicks' when...
03-29-22, 12:02 PM
Replies: 34
Views: 1,002
Posted By sch

Google cable end crimps for sources, same on...

Google cable end crimps for sources, same on amazon as well. Note different sizes for derailler versus brake cables.
Or any bike shop .....


I bought 100 stainless SHCS in 5Mx0.8 20 yrs ago from...
02-23-22, 03:34 PM
Replies: 26
Views: 4,257
Posted By sch

46/36 was aimed at gravel riders with 200-300+...

46/36 was aimed at gravel riders with 200-300+ watts of power. Shimano realized not everyone met that criteria hence
the GRX series with 46/31 and 48/32 cranks for those of us with more modest...
01-06-22, 09:40 AM
Replies: 9
Views: 1,016
Posted By sch

Brake cleaner is basically more volatile...

Brake cleaner is basically more volatile gasoline, consisting of C6/C7 alkanes where gasoline is C7/C8 alkanes so it works
well as a degreaser but should NOT be used indoors or near any ignition...
11-25-21, 12:17 PM
Replies: 17
Views: 700
Posted By sch

Ditto, really shocked when I realized that...

Ditto, really shocked when I realized that Speedplay sold out to Wahoo which promptly discontinued
all pedals except the newest road racing pedal. So my four pairs of Frogs bought in the 2001-5...
11-13-21, 12:14 PM
Replies: 31
Views: 9,553
Posted By sch

As they say, build up and longevity are a...

As they say, build up and longevity are a feature, not a bug, Boeshield's primary purpose is as a
corrosion preventative, not a lubricant, though it does lube well. A review of the marine...
11-02-21, 04:33 PM
Replies: 60
Views: 4,510
Posted By sch

As above, the mind boggles, it would take...

As above, the mind boggles, it would take incredible persistence and determination, to say nothing of the torque needed
after 2-3 turns and a strange blindness to the bits of aluminum falling out of...
11-01-21, 09:00 PM
Replies: 15
Views: 1,037
Posted By sch

Books can be a bit dicey if your bike is only 2-3...

Books can be a bit dicey if your bike is only 2-3 yrs old as book may not cover some of the strange bits of tech
the manufacturers and frame builders come up with.
OTOH www.parktool.com/repair-help...
10-30-21, 08:38 AM
Replies: 13
Views: 7,418
Posted By sch

No experience with tubeless, much less your...

No experience with tubeless, much less your combo, but if it is this much trouble fully equipped at an LBS then think
what might happen if you flat out in the boonies with dodgy cell coverage....
10-26-21, 08:50 PM
Replies: 5
Views: 646
Posted By sch

No reason why the OP couldn't find a worn out 9...

No reason why the OP couldn't find a worn out 9 spd cassette and use the spacers with the 11 spd cogs to make his
own cassette. You generally have to dredge through the bottom end cassettes to...
10-15-21, 06:31 AM
Replies: 51
Views: 2,944
Posted By sch

Here is the OEM BB:...

Here is the OEM BB: https://www.trekbikes.com/us/en_US/equipment/cycling-components/bike-bottom-brackets/-vp-components-square-taper-bottom-bracket/p/1040693/
which at $12 is about half the price of...
10-13-21, 09:50 AM
Replies: 35
Views: 3,096
Posted By sch

Functionally the frame should be and almost...

Functionally the frame should be and almost certainly is fine. Cosmetically this is like your new to you
2019 car that just had a beer can size dent put in the door. My attitude would depend a...
10-09-21, 05:58 AM
Replies: 8
Views: 1,005
Posted By sch

Harder than usual, but a better word is...

Harder than usual, but a better word is toughened, should be no problem for the really hardened tap to clean out
buggered threads. A dollop of oil is a good idea when using the tap.
10-06-21, 05:52 PM
Replies: 16
Views: 993
Posted By sch

well, 7 spd is a different animal than 8 spd so...

well, 7 spd is a different animal than 8 spd so further upgrade options are more limited but not closed out.
see: https://sheldonbrown.com/k7.html#bodycompat for some further info and discussion....
08-11-21, 08:51 AM
Replies: 22
Views: 3,616
Posted By sch

Agree with 'best do nothing' approach but with...

Agree with 'best do nothing' approach but with the proviso that the dent has not affected the wheel angle in the frame.
A google on checking frame alignment will give some simple tests to assess...
08-01-21, 09:46 PM
Replies: 3
Views: 1,899
Posted By sch

If you have the seatpost, seems like some inside...

If you have the seatpost, seems like some inside measurements could be made to give outer limits
for the cylinder size and the battery diameter will give you the ID. Then the thread form obtained...
07-28-21, 09:21 PM
Replies: 19
Views: 1,786
Posted By sch

Could you have bottomed out the crank against the...

Could you have bottomed out the crank against the BB shell or the cup? Phil BB are adjustable R<->L and the
spindle may be a bit too far to L. Also which crank and which BB are you using,...
07-04-21, 11:08 AM
Replies: 31
Views: 5,320
Posted By sch

At mcmastercarr a search on elastomer springs...

At mcmastercarr a search on elastomer springs brings up: https://www.mcmaster.com/elastomeric-die-springs/
and it looks like one in the 'high load' section designed for 300-400# loads might be a...
07-02-21, 08:57 AM
Replies: 23
Views: 2,385
Posted By sch

Plastic seals are easily removed and usually...

Plastic seals are easily removed and usually replaceable after cleaning and lubing the bearing. Metal seals are removable but
not nondestructively so replacing is difficult, main option is to...
06-27-21, 09:34 PM
Replies: 6
Views: 1,384
Posted By sch

Another option, which I did on my first pair of...

Another option, which I did on my first pair of now discontinued Speedplay Frogs, is to drill a 1/16 or 3/32"
hole through the center of the plastic and use a "needle" injector to inject grease...
06-24-21, 09:11 PM
Replies: 21
Views: 1,884
Posted By sch

Looked at Biketiresdirect and noted that the...

Looked at Biketiresdirect and noted that the HG800 11-34 cassette is a nominal 50% higher than pre covid prices, must
be a lot of Shimano containers floating around off LA or sitting on the docks....
06-04-21, 12:50 PM
Replies: 18
Views: 2,321
Posted By sch

Thanks for the memory, my first 'good' bike was...

Thanks for the memory, my first 'good' bike was a 3 spd Hercules, a Christmas present when I was 12 in the mid
1950s. Rode that all over the local area into jr high school, it was my main...
06-04-21, 11:14 AM
Replies: 13
Views: 1,959
Posted By sch

VICE 1)immoral or evil practice 2) designator for...

VICE 1)immoral or evil practice 2) designator for second or assistant in charge
VISE 1) mechanical gripping device

:)
05-26-21, 10:00 AM
Replies: 3
Views: 891
Posted By sch

A brief google suggests that IF your present...

A brief google suggests that IF your present sealed bearing is a 26x10x8 mm size then there exists a 9mm ID version
If any other size, this is less likely. Bicycle grade bearings in these size...
05-23-21, 12:36 PM
Replies: 6
Views: 994
Posted By sch

Most likely everything is press fit into place. ...

Most likely everything is press fit into place. You need to devise a method of applying pressure to the part you
want to remove, in this case the threaded cylindrical nut. You could use the axle...
05-15-21, 12:20 PM
Replies: 12
Views: 716
Posted By sch

From your final set of pix, the DS looks fine to...

From your final set of pix, the DS looks fine to me. The NDS also looks ok with the few threads showing not a matter of
concern. Cross threading will always occur within the first 1-2 threads and...
04-17-21, 08:59 AM
Replies: 5
Views: 1,069
Posted By sch

34t works fine on my GS Di2 RD and also on my GS...

34t works fine on my GS Di2 RD and also on my GS 7000 RD. IIRC GS is medium length cage
designation.
02-16-21, 09:51 AM
Replies: 6
Views: 531
Posted By sch

Looking at the center of the rotors, they clearly...

Looking at the center of the rotors, they clearly mount differently with the bottom coarsely splined a la cassette
type splines and the top with a finer sawtooth mount. So the hub disc mount would...
02-16-21, 09:48 AM
Replies: 9
Views: 1,138
Posted By sch

Consider using loktite on the set screw to better...

Consider using loktite on the set screw to better secure it in place before reassembly, just a bit
not slathered. Presume the set screw is for a hub with sealed bearings?
02-14-21, 03:18 PM
Replies: 29
Views: 1,938
Posted By sch

You realize a fairly athletic youthful human is...

You realize a fairly athletic youthful human is good for maybe 200-250 watts to the pedals for maybe an hour or two?
Pro level outputs are on the order of 400+ watts for 30-60 minutes at the top...
02-04-21, 10:49 AM
Replies: 8
Views: 1,142
Posted By sch

Timing chains last 3-5x as long as the derailler...

Timing chains last 3-5x as long as the derailler chain on a tandem. It does not matter what kind of chain you
use. 5-6spd chains are fine but 8-9spd are also fine as are 10 or 11 spd chains. The...
01-30-21, 03:37 PM
Replies: 23
Views: 2,442
Posted By sch

Been using innominata, 3M and a few Harbor...

Been using innominata, 3M and a few Harbor Freight kit zips for 25 yrs on my bikes. Never had a failure yet. I use white
on my Ti or natural Al parts and black on the black bike. With cable changes...
01-19-21, 08:44 AM
Replies: 13
Views: 3,170
Posted By sch

I once dealt with a frame with no brazed on...

I once dealt with a frame with no brazed on bosses and when the OEM clampon shifters on the DT were replaced with 8 spd variants
in the late '90s I found it expedient to drill a small hole on the...
12-30-20, 09:40 PM
Replies: 99
Views: 18,413
Posted By sch

KMC is a Taiwanese company that extensively...

KMC is a Taiwanese company that extensively manufactures in China so provenance is correct. As to fakes on Taobao, guaranteed, as it is an omnium
compendium chinese outlet. So is the chain a fake?...
12-12-20, 11:38 AM
Replies: 11
Views: 1,619
Posted By sch

If you had access to a MIG welder or a friend...

If you had access to a MIG welder or a friend with one, weld a slightly smaller nut to the stripped nut and
use a wrench to get it off. Replacement "T" nuts are available for this type mount....
11-19-20, 01:39 PM
Replies: 81
Views: 14,962
Posted By sch

A followup report after ~1000 or so miles of...

A followup report after ~1000 or so miles of riding would be appreciated. Thanks very much for the well documented repair.
I would have no real concerns about riding the frame with provisos that...
11-16-20, 10:01 PM
Replies: 3
Views: 1,995
Posted By sch

Cable is standard generic shifter cable, of which...

Cable is standard generic shifter cable, of which 98% are the same diameter. Stainless is the best choice as it is
not much more expensive than galvanized and coated cables tend to lose their...
Showing results 1 to 50 of 104
 


 
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