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Search: Posts Made By: KCT1986
Showing results 1 to 50 of 1000
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Forum: Classic & Vintage
09-19-24, 02:39 PM
Replies: 3
Views: 128
Posted By KCT1986

It appears that the hollow axle part with the...

It appears that the hollow axle part with the spring 'hole' has rotated. It probably should line up in both of your 1st two pics, allowing the end of the spring to protrude through both. Does the...
Forum: Bicycle Mechanics
09-18-24, 08:03 PM
Replies: 12
Views: 273
Posted By KCT1986

Shimano did this one. Don't know if they found...

Shimano did this one. Don't know if they found drawbacks in the design, but other models going forward didn't use the larger pulleys in 'top end' GS RDs.
...
Forum: Bicycle Mechanics
09-18-24, 03:57 PM
Replies: 10
Views: 276
Posted By KCT1986

If you think it looks unusual, you may want to...

If you think it looks unusual, you may want to check the placement of the bracket axle unit's position against the RD hanger tab. See below, should be at green arrow.

This if for cable RD but the...
Forum: Bicycle Mechanics
09-16-24, 09:46 PM
Replies: 12
Views: 273
Posted By KCT1986

It should index fine. The indexing is in the...

It should index fine. The indexing is in the shifter, the RD just moves based on the cable pull. The actuation ratio just need to be the same, (which it is).

There are not a lot of Shimano GS...
Forum: Bicycle Mechanics
09-16-24, 08:21 PM
Replies: 12
Views: 273
Posted By KCT1986

A current available model is the 105 RD-5701 GS,...

A current available model is the 105 RD-5701 GS, in silver.

Or slightly older road GS models in the Tiagra, 105 or Ultegra lines. Some are not officially rated for a 28 teeth sprocket but may...
Forum: Classic & Vintage
09-14-24, 09:32 PM
Replies: 5
Views: 180
Posted By KCT1986

Here is Shimano's spec. 122.5mm for a nominal...

Here is Shimano's spec. 122.5mm for a nominal chainline of 47.-47.5, seems this is with the longer end on the right.

The listing for 118mm may be for touring use where a 45 chainline was common...
Forum: Bicycle Mechanics
09-12-24, 09:57 PM
Replies: 10
Views: 377
Posted By KCT1986

The residual twist, if the spokes are good, is...

The residual twist, if the spokes are good, is probably the nipples 'sticking' in the rim. When riding, the change in operating tension could cause the spokes to untwist. This will change the tension...
Forum: Bicycle Mechanics
09-10-24, 03:58 PM
Replies: 12
Views: 392
Posted By KCT1986

Shimano did a redesign of their road FD when they...

Shimano did a redesign of their road FD when they introduced brifters. The 'new' design allowed for less cable pull, and the 'leading action' as shown in the pic (A550) was mostly stopped. The...
Forum: Bicycle Mechanics
09-10-24, 02:50 PM
Replies: 12
Views: 392
Posted By KCT1986

As mentioned, the shifters & RD is ST-6400 &...

As mentioned, the shifters & RD is ST-6400 & RD-6401 for 8 speed.

The FD is the older 7 speed, downtube shifter version. Not sure how well these will work with the brifter. The cable pull may not...
Forum: Bicycle Mechanics
09-05-24, 08:00 PM
Replies: 18
Views: 643
Posted By KCT1986

It's hard to see from the angle of your pic but...

It's hard to see from the angle of your pic but it looks like your setup is not proper for those Hbar/brifters.

Those are older anatomical bars, with the flat spot at the bottom of the 'hook'. ...
Forum: Bicycle Mechanics
09-04-24, 08:14 PM
Replies: 18
Views: 643
Posted By KCT1986

The ST-7700 series of levers will shift properly...

The ST-7700 series of levers will shift properly but does not have reach adjustment either.

They are both very similar in terms of dimension, and are the older style that sits a little different...
Forum: Bicycle Mechanics
09-04-24, 07:34 PM
Replies: 9
Views: 387
Posted By KCT1986

Sounds like your question is about removing the...

Sounds like your question is about removing the bolt that is marked below. (?)

You then want to make a custom bracket to replace the 'normal' one (A). ??

Don't recall seeing any that has...
Forum: Bicycle Mechanics
09-02-24, 09:53 PM
Replies: 13
Views: 648
Posted By KCT1986

Any adjuster with the correct size and threading...

Any adjuster with the correct size and threading will work. These older ones just use friction or a plastic insert to keep it from loosening.

The piece you linked would probably fit, but won't...
Forum: General Cycling Discussion
09-02-24, 12:45 PM
Replies: 27
Views: 1,417
Posted By KCT1986

More OT. Yes, mostly road brifters style...

More OT.

Yes, mostly road brifters style with hydro. The shift mechanism is a little complex but that's the price of convenience.

About 'interrupters' for hydro brakes, Shimano does have the...
Forum: General Cycling Discussion
09-01-24, 10:07 PM
Replies: 27
Views: 1,417
Posted By KCT1986

Road bikes have had hydro disk brakes as an...

Road bikes have had hydro disk brakes as an option for quite a few years now, both from Shimano & SRAM.
Forum: Bicycle Mechanics
08-25-24, 02:23 PM
Replies: 72
Views: 2,928
Posted By KCT1986

How far is the adapter inserted in the steerer...

How far is the adapter inserted in the steerer tube?

The wedged portion works best when it's not too high or low in the steerer.

Too high could put it in the area of the exterior threaded...
Forum: Classic & Vintage
08-24-24, 08:20 PM
Replies: 12
Views: 630
Posted By KCT1986

The DA 10 speed FHs, #7800 & 7801 uses the alloy...

The DA 10 speed FHs, #7800 & 7801 uses the alloy freehub body with the taller splines. This limits you to older Shimano style cassettes designed to work with the taller splines. Don't know who made...
Forum: Bicycle Mechanics
08-24-24, 02:19 PM
Replies: 20
Views: 7,253
Posted By KCT1986

Here is Shimano's frame build requirement for...

Here is Shimano's frame build requirement for canti or V brakes. Don't know if your fork has some unusual configuration....
Forum: Bicycle Mechanics
08-22-24, 02:44 PM
Replies: 37
Views: 1,723
Posted By KCT1986

The issue with a longer handle is that it would...

The issue with a longer handle is that it would interfere with an attached pedal. Then you would need to buy a PW.:)
Forum: Bicycle Mechanics
08-21-24, 06:36 PM
Replies: 37
Views: 1,723
Posted By KCT1986

Or you could immobilize the crankarm by strapping...

Or you could immobilize the crankarm by strapping it to one of the frame's tubes or chainstay.
Forum: Bicycle Mechanics
08-20-24, 02:31 PM
Replies: 8
Views: 353
Posted By KCT1986

Yes new BB needed for the Orgin8. The 9...

Yes new BB needed for the Orgin8.

The 9 speed Ultegra is Octalink V1, 118.5mm for a triple.

Very few cranks used this style BB. Only a few Shimanos and also even less common 3rd parties.
Forum: Classic & Vintage
08-18-24, 09:30 PM
Replies: 25
Views: 1,293
Posted By KCT1986

Yes, it is possible that you did shorten the DS...

Yes, it is possible that you did shorten the DS when you reduced the width of the hub. This could have been by swapping/removing a spacer or using a thinner locknut. Below is Shimano's nominal spec...
Forum: Classic & Vintage
08-16-24, 07:21 PM
Replies: 25
Views: 1,293
Posted By KCT1986

Yes, there are a few ways to do a respacing to...

Yes, there are a few ways to do a respacing to 126mm. Ideally, you would take a little, maybe 1-1.5mm off the right side, and the other 3-2.5mm from the left. This will increase the dish some, but...
Forum: Bicycle Mechanics
08-15-24, 12:53 PM
Replies: 6
Views: 340
Posted By KCT1986

What's important about spindle length is how it...

What's important about spindle length is how it matches with the crankset. The resulting chainline is what needs to be reasonably correct. Common triples went from 45mm, (common in the days of 48T...
Forum: Bicycle Mechanics
08-12-24, 04:19 PM
Replies: 32
Views: 1,212
Posted By KCT1986

Does the hanger material seem strong enough that...

Does the hanger material seem strong enough that you could extend the hole/slot upwards a little so you can push the FD higher? Looks like there is some room there.

Going to a triple crank, which...
Forum: Classic & Vintage
08-11-24, 09:25 PM
Replies: 4
Views: 351
Posted By KCT1986

These are coming up on 40 years old. Finding...

These are coming up on 40 years old. Finding original replacements will be difficult, and if you do, expect to pay $$$.

These uses unique 10 teeth pulleys. A floating upper pulley would be...
Forum: Bicycle Mechanics
08-11-24, 12:04 PM
Replies: 29
Views: 1,124
Posted By KCT1986

Won't comment on you past experience as stated...

Won't comment on you past experience as stated above, or you front chainring noise.

But, as for using a 10 speed shifter (non Tiagra 4700 series) with 9 speed cassette, you could try the alternate...
Forum: Bicycle Mechanics
08-10-24, 03:03 PM
Replies: 61
Views: 2,876
Posted By KCT1986

How about the cassette, any strange looking...

How about the cassette, any strange looking damage to any of the outer sprockets? Like bent teeth/scrapes from something being caught between it and the seatstay. Looks like a hard object got...
Forum: Bicycle Mechanics
08-09-24, 01:53 PM
Replies: 19
Views: 2,325
Posted By KCT1986

Which particular spring are you meaning? See...

Which particular spring are you meaning?

See the post before yours and follow to post #4 with the link. Within that linked thread is another link to a Flickr gallery with pics. Click on a pic...
Forum: Classic & Vintage
08-06-24, 04:40 PM
Replies: 8
Views: 423
Posted By KCT1986

Not sure how it operates. May need to be on...

Not sure how it operates.

May need to be on the frame. Seems that the arm may need to be stationary and the screw acts on the tab on the piece that holds the spring. (??)
Forum: Classic & Vintage
08-06-24, 04:15 PM
Replies: 8
Views: 423
Posted By KCT1986

See if this helps. ...

See if this helps.


https://cimg5.ibsrv.net/gimg/bikeforums.net-vbulletin/1402x667/diacompe_e49cddad728ae99e7035ab3584d3aca6dce492b5.jpg
Forum: Classic & Vintage
08-06-24, 03:59 PM
Replies: 8
Views: 423
Posted By KCT1986

It's a centering mechanism. Done back in the...

It's a centering mechanism. Done back in the 1980s.

Notice that the axle part where the springs attaches does not have flats for a cone style wrench, (which most brakes did back then).
Forum: Bicycle Mechanics
08-04-24, 09:24 PM
Replies: 19
Views: 2,325
Posted By KCT1986

Thanks for uploading these, and the pic assist. ...

Thanks for uploading these, and the pic assist.

The mechanism seems to be the same as the early versions of the 6500/5500 series.

See post #4 for a link to basic disassembly/cleaning procedures...
Forum: Bicycle Mechanics
08-01-24, 01:35 PM
Replies: 14
Views: 548
Posted By KCT1986

Yes, securing the tool to the BB allows you to...

Yes, securing the tool to the BB allows you to use more leverage. Here is how, with a square taper use a M8x1 screw, for a Octalink you can use a long bolt/nut through the axle.
...
Forum: Bicycle Mechanics
07-29-24, 12:43 PM
Replies: 26
Views: 1,177
Posted By KCT1986

Assuming that the frame was designed, built &...

Assuming that the frame was designed, built & outfitted for 135mm (137) OLD, and corresponding chainline, why change anything on the frame.

Reconfigure the hub to 135mm with spacers on the left...
Forum: Bicycle Mechanics
07-28-24, 08:04 PM
Replies: 8
Views: 444
Posted By KCT1986

That is just a probably just a poor match-up...

That is just a probably just a poor match-up between the crank offset and the spindle length.

Older cranks were designed to use a longer spindle, or at least longer on the drive side. The...
Forum: Bicycle Mechanics
07-26-24, 12:10 PM
Replies: 16
Views: 592
Posted By KCT1986

In the normal setup, it is adjacent to the cone,...

In the normal setup, it is adjacent to the cone, a 12.7mm one. With a 9mm cone, you may need a spacer in between to put it in a similar position. Don't know how much leeway it has before it doesn't...
Forum: Bicycle Mechanics
07-26-24, 11:15 AM
Replies: 16
Views: 592
Posted By KCT1986

With a shorter cone, you may need to add a...

With a shorter cone, you may need to add a standard spacer directly against the cone, inside the spacer that holds the seal ring. This will depend on how far outboard the seal ring will need to be...
Forum: Bicycle Mechanics
07-25-24, 09:21 PM
Replies: 16
Views: 592
Posted By KCT1986

The FH-4400 is an unusual design for a Shimano...

The FH-4400 is an unusual design for a Shimano road hub with the external 'cap seal'. Doesn't have the usual rubber seal on the left cone. It is most similar to some of the MTB hubs of about the...
Forum: Bicycle Mechanics
07-24-24, 04:20 PM
Replies: 18
Views: 821
Posted By KCT1986

Maybe some clip-on aero bars like on TT or...

Maybe some clip-on aero bars like on TT or triathlon bikes.
Forum: Bicycle Mechanics
07-24-24, 02:56 PM
Replies: 12
Views: 509
Posted By KCT1986

Here you go. ...

Here you go.

https://cimg9.ibsrv.net/gimg/bikeforums.net-vbulletin/1169x808/00_st7801_fd2eb32867bac29905552af4c5f1e3bcdcb013ec.jpg

ST-7801 left & right. ST-7801 right could also be bought...
Forum: Classic & Vintage
07-21-24, 09:52 PM
Replies: 41
Views: 1,631
Posted By KCT1986

Note that there is 8 speed version of the...

Note that there is 8 speed version of the ST-3300. The 7 speed right shifter should be marked specifically 7 speed.
Forum: Classic & Vintage
07-20-24, 09:17 PM
Replies: 41
Views: 1,631
Posted By KCT1986

That's a generous offer but won't work with the...

That's a generous offer but won't work with the OP's 7 speed 105 freehub.

These Ultegra have a freehub body that extends further into the hub shell and will not sit properly.

It is similar to...
Forum: Classic & Vintage
07-20-24, 06:06 PM
Replies: 9
Views: 412
Posted By KCT1986

With the reduced thread size on the outermost...

With the reduced thread size on the outermost sprocket, likely a DA cassette & hub.

Another thing to look for is a date code stamped into the hub shell, 2 letter, possibly on the center barrel or...
Forum: Classic & Vintage
07-20-24, 03:08 PM
Replies: 9
Views: 412
Posted By KCT1986

RX100 didn't have the freehub body with the...

RX100 didn't have the freehub body with the reduced thread size for the outermost sprockets. The reduced thread size was a Dura Ace thing.

This era DA freehub body has a unique attachment to the...
Forum: Classic & Vintage
07-20-24, 03:02 PM
Replies: 9
Views: 412
Posted By KCT1986

The freehub body looks to be too short for 8...

The freehub body looks to be too short for 8 speed.
8 speed had shorter shoulders at the inner end on the splines, to give more usable space for the cassette.
Forum: Classic & Vintage
07-20-24, 02:58 PM
Replies: 9
Views: 412
Posted By KCT1986

135mm, really? Thought that it would be...

135mm, really?

Thought that it would be either a FH-7260 or 7400. Both has 6 speed versions @126mm spacing.

It that the cassette that you are trying to fit and the outer ring won't fit? Or is...
Forum: Bicycle Mechanics
07-17-24, 05:37 PM
Replies: 20
Views: 768
Posted By KCT1986

It will depend on the brand of hub you have and...

It will depend on the brand of hub you have and the age. Shimano made HG hubs & complete wheels pre-Microspline use a different attachment/drive design than their Microspline freehubs. Most of the...
Forum: Bicycle Mechanics
07-15-24, 06:41 PM
Replies: 20
Views: 768
Posted By KCT1986

Glad that it worked out for you. As...

Glad that it worked out for you.

As expected, the hubs are similar enough that the swap shouldn't have caused any issues.

with normal maintenance, these Shimano hubs have very long useful...
Forum: Bicycle Mechanics
07-15-24, 04:26 PM
Replies: 15
Views: 584
Posted By KCT1986

Yes, the DS seal is also a concern. During...

Yes, the DS seal is also a concern.

During that time, Shimano used 2 types of seals, the rubber O-ring, and also the older style as pictured below. The interface in the freehub body (#17) was...
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