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Search: Posts Made By: KCT1986
Showing results 1 to 50 of 901
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Forum: Bicycle Mechanics
05-24-24, 07:15 PM
Replies: 9
Views: 181
Posted By KCT1986

FWIW, the attached shows the 'standard' spec for...

FWIW, the attached shows the 'standard' spec for the measurement between the right side locknut and the 'backstop' of the splines (where the cassette stops). SRAM shows 40.6mm +/- (bottom left in...
Forum: Bicycle Mechanics
05-24-24, 03:39 PM
Replies: 22
Views: 460
Posted By KCT1986

So, we don't know exactly what hub you have. ...

So, we don't know exactly what hub you have. Many companies use less expensive 'house' brand hubs on their wheels when equipping their bikes. Hard to know the actual hub maker and thus find out...
Forum: Bicycle Mechanics
05-23-24, 12:36 PM
Replies: 7
Views: 193
Posted By KCT1986

First off, don't know the specific of your crank....

First off, don't know the specific of your crank.

You also didn't mention which positions on the crank you plan to use (granny/middle, or middle/outer).

Attached is the common Tange left/right...
Forum: Classic & Vintage
05-23-24, 11:59 AM
Replies: 25
Views: 936
Posted By KCT1986

Based in the pic, possibly a model like the...

Based in the pic, possibly a model like the attached. The FF stamp may be the date code, 1981 June.

EV-FH-Q620-0506D.pdf (shimano.com)...
Forum: Bicycle Mechanics
05-22-24, 01:11 PM
Replies: 17
Views: 206
Posted By KCT1986

The Shimao freehub bodies that attach to the...

The Shimao freehub bodies that attach to the shell in this manner should be really tight. The 10mm hollow bolt needs to be torqued down quite hard.

The FH-6207's instructions below. See the...
Forum: Road Cycling
05-21-24, 11:37 AM
Replies: 15
Views: 476
Posted By KCT1986

Shimano had 2 models of 10 sp barends, SL-BS78...

Shimano had 2 models of 10 sp barends, SL-BS78 has friction, BS79 is index only. The 11 speed is also index only.
Forum: Bicycle Mechanics
05-21-24, 10:10 AM
Replies: 22
Views: 460
Posted By KCT1986

Thanks for the correction. Didn't know that the...

Thanks for the correction. Didn't know that the NX 11-50t cassette was different from the 11-42t version. Was not aware that it had more 'overhang' to the hub side.
Forum: Bicycle Mechanics
05-20-24, 04:52 PM
Replies: 22
Views: 460
Posted By KCT1986

What rear hub do you have? Specific brand info...

What rear hub do you have? Specific brand info please.

If it is a Shimano made hub, most of the 8/9/10 freehub body cannot be swapped for a 11 speed version. The interface between the freehub...
Forum: Bicycle Mechanics
05-20-24, 10:44 AM
Replies: 22
Views: 513
Posted By KCT1986

Sometimes the pulleys may appear identical but...

Sometimes the pulleys may appear identical but some companies have pulleys that have slightly different teeth profiles. The upper may have a fuller profile to better 'grip' the chain, and the lower...
Forum: Road Cycling
05-14-24, 03:08 PM
Replies: 15
Views: 476
Posted By KCT1986

In friction mode you can use any # of sprockets...

In friction mode you can use any # of sprockets and any RD. The RD just moves based on the amount of cable pull it receives. The issue is that with higher # of speeds, the sprockets are closer...
Forum: Road Cycling
05-14-24, 02:45 PM
Replies: 15
Views: 476
Posted By KCT1986

If you're referring to the Shimano SL-BS78, the...

If you're referring to the Shimano SL-BS78, the right shifter will have 'friction' marked on the ring next to the 'D' handle. This will convert to friction mode.

The Shimano SL-BS79 is index...
Forum: Bicycle Mechanics
05-13-24, 12:59 PM
Replies: 2
Views: 162
Posted By KCT1986

As mentioned above, a complete soak is probably...

As mentioned above, a complete soak is probably the better option. But, if you don't want to go that route, spraying in a specific area may help.

Below is a picture of the mechanism of a ST-6510...
Forum: Road Cycling
05-12-24, 09:23 PM
Replies: 27
Views: 564
Posted By KCT1986

The ST-7400 first hit the Shimano catalog for the...

The ST-7400 first hit the Shimano catalog for the 91 model year (catalog page attached, note the arrow on the FD arm). Protos were around earlier but no info on what they were like. If the protos...
Forum: Classic & Vintage
05-12-24, 08:09 PM
Replies: 25
Views: 936
Posted By KCT1986

If your original post is correct, the link is for...

If your original post is correct, the link is for the spec sheet. This seems to be the only 105 that used that freehub attachment style.

SI-M-98-000-00-ENG.pdf (shimano.com)...
Forum: Road Cycling
05-12-24, 05:44 PM
Replies: 27
Views: 564
Posted By KCT1986

Yes, the change was with the beginning of...

Yes, the change was with the beginning of brifters, (which you just confirmed), this was early 90s, not the late 80s you posted. So the change coincided with brifter, as my older post stated.
Forum: Road Cycling
05-12-24, 03:23 PM
Replies: 27
Views: 564
Posted By KCT1986

Whether you will need to change it will depend on...

Whether you will need to change it will depend on the dimensions of the pivots. The length of the cable attachment point to the pivot vs the same pivot to the cage attachment will affect the...
Forum: Road Cycling
05-12-24, 02:58 PM
Replies: 27
Views: 564
Posted By KCT1986

No, there was a change in the early 90's with the...

No, there was a change in the early 90's with the 1st brifters, a higher actuations worked better since it pulled less cable. During the transition (early 90s), Shimano made a couple of versions that...
Forum: Road Cycling
05-12-24, 01:36 PM
Replies: 27
Views: 564
Posted By KCT1986

Here's something I posted a few days ago. Pull a...

Here's something I posted a few days ago. Pull a picture up of an early versions of Shimano's brifters, the ones with shift cable coming out the side, to visualize it.

The difference in actuation...
Forum: Road Cycling
05-12-24, 01:24 PM
Replies: 27
Views: 564
Posted By KCT1986

Yes, the pictured SRAM is reasonably close to...

Yes, the pictured SRAM is reasonably close to pre-11 speed Shimano brifter compatible road FD, (8/9/10). If the OP's is much older, (FD-62xx)? it had longer pull needed than used on older brifter,...
Forum: Road Cycling
05-12-24, 12:48 PM
Replies: 27
Views: 564
Posted By KCT1986

In simple terms, it is not really about pulley...

In simple terms, it is not really about pulley dimensions, but the pivot action of the parallelogram (the main body) and the attachment point of the cable. The design of those determines the lateral...
Forum: Bicycle Mechanics
05-11-24, 09:58 PM
Replies: 43
Views: 985
Posted By KCT1986

For someone who has finger mobility issues,...

For someone who has finger mobility issues, brifters or rapid fire type shifter would seem to be the best option since the lever 'returns' to the same position. Assuming a suitable position can be...
Forum: Bicycle Mechanics
05-11-24, 12:10 PM
Replies: 29
Views: 951
Posted By KCT1986

For many higher quality parts, the manufacturer's...

For many higher quality parts, the manufacturer's web site is also a good source for their recommended procedures. SRAM & Shimano has a lot of technical documents available.
Especially helpful if...
Forum: Classic & Vintage
05-09-24, 03:13 PM
Replies: 25
Views: 936
Posted By KCT1986

It looks like the hub is one of the really old...

It looks like the hub is one of the really old ones, early 80s. Possibly one of the ones that used that just used the cone & bearings to hold the freehub body onto the hub shell.

Your 'old'...
Forum: Bicycle Mechanics
05-09-24, 12:58 PM
Replies: 17
Views: 467
Posted By KCT1986

Yes, If the shop replaced the 11T with a Shimano...

Yes, If the shop replaced the 11T with a Shimano 12T sprocket designed for 11 speed, the sprocket would not have the recessed area and the serrations would be adjacent to the inner hole. The...
Forum: Bicycle Mechanics
05-09-24, 11:09 AM
Replies: 17
Views: 467
Posted By KCT1986

For the Shimano road 11 speed cassettes, the...

For the Shimano road 11 speed cassettes, the standard lockring is the smaller 11T capable type. This works since the outermost sprocket is designed for this lockring. What is different is that the...
Forum: Classic and Vintage Sales
05-08-24, 03:11 PM
Replies: 6
Views: 499
Posted By KCT1986

You should also check the OLN of the FH-6402, if...

You should also check the OLN of the FH-6402, if not altered it should be 130mm. But it is a good candidate to do 126mm for running 8/9/10 cassettes.
Forum: General Cycling Discussion
05-07-24, 08:10 PM
Replies: 15
Views: 507
Posted By KCT1986

Your bike seems to have been equipped originally...

Your bike seems to have been equipped originally with some version of the road GripShift, a product of SRAM. These type of shifters were sometimes used back before brifters were available. Currently...
Forum: General Cycling Discussion
05-07-24, 12:48 PM
Replies: 15
Views: 507
Posted By KCT1986

The general consensus is that Suntour rear...

The general consensus is that Suntour rear derailleurs are not compatible with Shimano or Shimano compatible brifters. The standard Suntour index system uses a different actuation ratio. In brief...
Forum: General Cycling Discussion
05-06-24, 05:16 PM
Replies: 15
Views: 507
Posted By KCT1986

It depends on the group that is on the bike. If...

It depends on the group that is on the bike. If this is the Shimano equipped year, then it should be doable with 7 speed brifters and a road triple front derailleur. 7 speed brifters are not too...
Forum: General Cycling Discussion
05-06-24, 12:54 PM
Replies: 9
Views: 560
Posted By KCT1986

The difference in actuation ratio for FD between...

The difference in actuation ratio for FD between MTB & road really happened when road went to brifters. A possible reason is that early brifters had the shift unit in the very front of the pod. To...
Forum: Bicycle Mechanics
05-05-24, 04:46 PM
Replies: 15
Views: 401
Posted By KCT1986

Could you have changed the hub spacing when...

Could you have changed the hub spacing when rebuilding?

Shimano's spec below. Suntour stated 37mm for the same spec for 7 speed, back in the Accushift days, (7 sp ultra FW).
...
Forum: Classic & Vintage
05-05-24, 03:05 PM
Replies: 7
Views: 1,460
Posted By KCT1986

Can't speak about the quality of those rings. How...

Can't speak about the quality of those rings. How they will wear or shift may not be optimal, but that will depend on your use and expectation.

9/10 speed rings may have the teeth offset on the...
Forum: Bicycle Mechanics
05-05-24, 11:47 AM
Replies: 7
Views: 259
Posted By KCT1986

Never said the wide spline was for strength. ...

Never said the wide spline was for strength.

Said that as long as one of the splines is not cut-away on the back side, it is strong enough to prevent the sprockets from rotating in the non-drive...
Forum: Bicycle Mechanics
05-05-24, 10:19 AM
Replies: 7
Views: 259
Posted By KCT1986

The splines are cut-away in the non-driving side....

The splines are cut-away in the non-driving side. But as picture, at least 1 of the splines is full width so the sprockets can't rotate. Should not be enough force in that direction to need more...
Forum: Bicycle Mechanics
05-03-24, 12:35 PM
Replies: 8
Views: 397
Posted By KCT1986

Yes, that is exactly what I expected was...

Yes, that is exactly what I expected was happening.

The chainline difference would be 3mm, a little less than 1 sprocket inboard, usually not really noticeable. Just something to remember if you...
Forum: Bicycle Mechanics
05-03-24, 11:01 AM
Replies: 8
Views: 397
Posted By KCT1986

So, did you find that the model # is different...

So, did you find that the model # is different between your cranks?

The different models of the crank varies in the length of the spindle and has a small effect on the chainline & thread width (Q...
Forum: Road Cycling
05-02-24, 03:16 PM
Replies: 6
Views: 291
Posted By KCT1986

These seems to be the SL-BS78, 10 sp SIS or...

These seems to be the SL-BS78, 10 sp SIS or friction. Part of the DA 7800 group. The later BS79 was SIS only.

The light action refers to the spring assist. Earlier version shown below, should be...
Forum: Bicycle Mechanics
05-01-24, 02:13 PM
Replies: 8
Views: 397
Posted By KCT1986

Is the picture of the left arm? Is the right arm...

Is the picture of the left arm? Is the right arm marked in the same manner, with multiple model numbers?

Shimano sometimes mark crank arms with specific model numbers on the right, but multiple...
Forum: Early Brifter Bikes - 7,8, and 9 Speed
04-26-24, 04:58 PM
Replies: 8
Views: 704
Posted By KCT1986

The FH-6500 is a standard 8/9/10 speed freehub,...

The FH-6500 is a standard 8/9/10 speed freehub, what Shimano calls HG-M. As for cassette fitment, any HG spline from Shimano & compatibles will work, with rear spacer in some cases. Nothing unusual...
Forum: Bicycle Mechanics
04-23-24, 03:03 PM
Replies: 38
Views: 1,247
Posted By KCT1986

A thing to check is the distance between the...

A thing to check is the distance between the posts that the brakes mount unto. Shimano MTB V-brakes are usually speced to use an 80mm spacing standard. Narrower spacing would require that the rims...
Forum: Bicycle Mechanics
04-21-24, 08:38 PM
Replies: 65
Views: 2,651
Posted By KCT1986

There was a RX-100 triple crank, marked '-T'. ...

There was a RX-100 triple crank, marked '-T'. This was from earlier than the OP's bike, about '92 (7 speed group). It was one of Shimano's early use of 130/74 triple for road. Followed a few years...
Forum: Bicycle Mechanics
04-21-24, 04:58 PM
Replies: 65
Views: 2,651
Posted By KCT1986

You should double check your actual eqmt. The...

You should double check your actual eqmt. The bike may not have the exact parts in the listing. It may have had changes made to it, at the purchase point or later. What you stated in your original...
Forum: Bicycle Mechanics
04-20-24, 02:22 PM
Replies: 5
Views: 339
Posted By KCT1986

Yes, as stated prior, the 1st version has...

Yes, as stated prior, the 1st version has shortest C to C, and slight difference in upper pulley location.

Installing new cages should work. Shimano doesn't provide info on the bodies. But, many...
Forum: Bicycle Mechanics
04-20-24, 12:26 PM
Replies: 5
Views: 339
Posted By KCT1986

Not In this case, there is much more going on. ...

Not In this case, there is much more going on. See post #3.
Forum: Bicycle Mechanics
04-20-24, 12:23 PM
Replies: 5
Views: 339
Posted By KCT1986

For the RD-570?-? series, there are differences...

For the RD-570?-? series, there are differences in the cage of the models. 1st model was RD-5700. The 2nd version, (5700-A,) uses a different cage that is slightly longer between pulleys, and the...
Forum: Bicycle Mechanics
04-19-24, 02:07 PM
Replies: 43
Views: 1,582
Posted By KCT1986

Haha, don't know what is for, the MTB Shadow...

Haha, don't know what is for, the MTB Shadow style RD that I've seen doesn't have it.

Guess that it would keep the bracket from rotating backward, but the bracket is supposed to be firmly attached...
Forum: Bicycle Mechanics
04-19-24, 01:41 PM
Replies: 43
Views: 1,582
Posted By KCT1986

Yes, just move it into the correct position. All...

Yes, just move it into the correct position. All else should be good.

Disregard all the other unhelpful posts, DONE.
Forum: Bicycle Mechanics
04-19-24, 12:34 PM
Replies: 43
Views: 1,582
Posted By KCT1986

Something to double check is if the RD is...

Something to double check is if the RD is installed correctly. The attachment of the bracket axle unit (the upper link) to the frame's hanger looks a little more vertical than common. And also the...
Forum: Classic & Vintage
04-17-24, 10:51 AM
Replies: 14
Views: 584
Posted By KCT1986

There shouldn't be anything inherently slower on...

There shouldn't be anything inherently slower on the design on the Cdale. It may be a little heavier @ 21 pound but common for mid 80s. Wheels are probably 36 spokes, also common. The rest of the...
Forum: Bicycle Mechanics
04-16-24, 08:32 PM
Replies: 15
Views: 755
Posted By KCT1986

If you decide to rebuild, Sheldon Brown has a...

If you decide to rebuild, Sheldon Brown has a good writeup of wheelbuilding. Very worth a read if you haven't done so already. Includes step by step directions in the easy to read method. Can be...
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