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Search: Posts Made By: gfk_velo
Showing results 1 to 50 of 392
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Forum: Road Cycling
04-03-24, 12:43 PM
Replies: 51
Views: 11,164
Posted By gfk_velo

Would I be right in thinking that you need a...

Would I be right in thinking that you need a single freewheel?

If so, possibly a GoldTech cartridge bearing rear hub could work for you. I'd need to check whether they're still in a position to do...
Forum: Classic & Vintage
02-03-24, 02:39 PM
Replies: 4
Views: 197
Posted By gfk_velo

There is a good article here: ...

There is a good article here:
https://www.retrobike.co.uk/archive/1982-campagnolo-record-news-vol-1-no-2.343/
Where "all is revealed" ... :-D
Forum: Bicycle Mechanics
01-31-24, 02:52 PM
Replies: 25
Views: 839
Posted By gfk_velo

Brilliant - I'm glad you got good function in the...

Brilliant - I'm glad you got good function in the end.
Yes, lubrication on the chain will make a difference (more than many understand, in fact).
Also, when people "test" gears in the workstand,...
Forum: Bicycle Mechanics
01-29-24, 05:35 AM
Replies: 25
Views: 839
Posted By gfk_velo

To confirm ... you have (as you mention it's a...

To confirm ... you have (as you mention it's a full group apart from the cassette) that you are using both a set of 2018 Centaur 11s levers and a Centaur 11 2018 RD?
This is super-important because...
Forum: Bicycle Mechanics
01-22-24, 01:14 PM
Replies: 25
Views: 839
Posted By gfk_velo

It could be the 11-27 cassette - the spacings are...

It could be the 11-27 cassette - the spacings are the same but it may be that the tracking angle isn't what it should be:
...
Forum: Bicycle Mechanics
01-22-24, 03:49 AM
Replies: 25
Views: 839
Posted By gfk_velo

That's it ... basically if you cut / set the...

That's it ... basically if you cut / set the chain long, you can always shorten it but it's a pain to lengthen it.
I think the likelihood is (the peril of trying to give guidance with these things,...
Forum: Bicycle Mechanics
01-19-24, 05:12 AM
Replies: 25
Views: 839
Posted By gfk_velo

This can happen, depending on the exact geometry...

This can happen, depending on the exact geometry of the frame & hanger and the chainring / cassette sizes in use.

In fact the gap from the idler run of chain to the point on the upper part of the...
Forum: Bicycle Mechanics
01-07-24, 03:42 PM
Replies: 12
Views: 358
Posted By gfk_velo

No problem ... you aren't the first to query this...

No problem ... you aren't the first to query this ... As I mentioned in my reply to Road Fan, we had a few RDs returned to us at the Service Centre in the early days of 11s, before we were able to...
Forum: Bicycle Mechanics
01-07-24, 03:39 PM
Replies: 12
Views: 358
Posted By gfk_velo

It's not there (by design, anyway) in 8, 9 and...

It's not there (by design, anyway) in 8, 9 and 10s cages.

The twist was introduced into the design with 11s.
Having siad that, in 8, 9 and 10s, to some extent the effective "twist" is created by...
Forum: Bicycle Mechanics
01-07-24, 08:44 AM
Replies: 12
Views: 358
Posted By gfk_velo

All the Campagnolo 11, 12 & 13s have a...

All the Campagnolo 11, 12 & 13s have a designed-in twist in the cage - it's not much, less than 2 degrees, but it is visible and it looks as if the lower jockey is twisted away from the line of the...
Forum: Classic & Vintage
11-10-23, 02:56 AM
Replies: 10
Views: 537
Posted By gfk_velo

I've ditched the copies I had of product...

I've ditched the copies I had of product catalogues from the early 90s but EAI were one of Campagnolo's main distributors in the US for many years and fortunately, they have retained a digital image...
Forum: Classic & Vintage
11-09-23, 11:33 AM
Replies: 10
Views: 537
Posted By gfk_velo

It's Campagnolo Stratos. MY93/94 if my memory...

It's Campagnolo Stratos.
MY93/94 if my memory serves ... my first year in Campagnolo commercial.
Forum: Bicycle Mechanics
11-20-22, 06:19 AM
Replies: 20
Views: 1,210
Posted By gfk_velo

It's EC-RE100. Same part for RE and CH. It's...

It's EC-RE100. Same part for RE and CH.

It's an oddity of the numbering sequence, EC-RE200 is the 10s lever body complete (if that's what's perplexing you).

The reason is that the complete 10s...
Forum: Bicycle Mechanics
11-17-22, 08:25 AM
Replies: 20
Views: 1,210
Posted By gfk_velo

Yes, that's correct. All the disc-brake type...

Yes, that's correct.
All the disc-brake type lever bodies have a "DB" in the code, even those that have only ever been DB, like Ekar for instance ...
Forum: Bicycle Mechanics
11-17-22, 07:53 AM
Replies: 20
Views: 1,210
Posted By gfk_velo

Haha, yes, tell me about it ... :-D The...

Haha, yes, tell me about it ... :-D

The lever body you need is EC-RE300.

It's the lever body ex rubber hood, clip, brake lever and pivot pin.
The "excluded"parts all transfer directly across...
Forum: Bicycle Mechanics
11-17-22, 07:20 AM
Replies: 20
Views: 1,210
Posted By gfk_velo

Yes, that should be the kiddy. Don't forget the...

Yes, that should be the kiddy.
Don't forget the RH lever body though, as otherwise, it won't "quite" index. The pre 2015 lever is close - but not right!
Forum: Bicycle Mechanics
11-17-22, 07:02 AM
Replies: 20
Views: 1,210
Posted By gfk_velo

Hi there Yes, in that case, you'd be best...

Hi there

Yes, in that case, you'd be best going the route of HO medium cage RD, RD15-11CH2SP (CHORUS (HO) 11s rear der. - medium cage MY15-19) ... ignore the RD15 code, it's there to confirm...
Forum: Bicycle Mechanics
11-17-22, 06:02 AM
Replies: 20
Views: 1,210
Posted By gfk_velo

Part of this is down to what you find to be an...

Part of this is down to what you find to be an acceptable level of shifting and part of it is down to possible longer-term damage to components.

The older Chorus RDs from 2009-2015 (which it...
Forum: Bicycle Mechanics
11-16-22, 03:08 AM
Replies: 20
Views: 1,210
Posted By gfk_velo

At Velotech Cycling Ltd, one of the two...

At Velotech Cycling Ltd, one of the two Campagnolo Service Centre in the UK, we have 3 Dogma 65.1s from 2010/11.
We havea 53, a 55 and a 57cm.

At various times we've test-assembled non-standard...
Forum: Bicycle Mechanics
08-05-22, 01:32 PM
Replies: 4
Views: 303
Posted By gfk_velo

Broadly yes, we use the vertical distance from...

Broadly yes, we use the vertical distance from end of the bolt that secures the jockey cage to the lower pivot as the datum, to the surface table at 0, 120 and 240 degrees of rotation around the boss...
Forum: Bicycle Mechanics
08-05-22, 12:39 AM
Replies: 4
Views: 303
Posted By gfk_velo

Yes, they are but you appear to have them...

Yes, they are but you appear to have them correctly assembled.

The upper (guide) pulley is labelled as such and is unidirerectional. The lower (idler) pulley is labelled and has a direction of...
Forum: Bicycle Mechanics
07-26-22, 10:28 AM
Replies: 8
Views: 7,946
Posted By gfk_velo

The preload washer imparts, when compressed to...

The preload washer imparts, when compressed to the degree allowed by the tolerance given for BB shell width, a pre-load in the *correct* range, as specified by Schaeffler, who make the bearing.
It's...
Forum: Bicycle Mechanics
05-23-22, 02:16 AM
Replies: 14
Views: 10,046
Posted By gfk_velo

I did my best to discourage the OP. Strangely...

I did my best to discourage the OP.
Strangely enough, the guys that work with the kit every day of the week occasionally know what they are doing :-D
Forum: Bicycle Mechanics
04-28-22, 03:49 PM
Replies: 118
Views: 25,241
Posted By gfk_velo

Uhhh, no, not quite. Different metals do confer...

Uhhh, no, not quite. Different metals do confer markedly different characteristics to the soap. They also potentially have different interactions with the other elements in the bearing.Check the...
Forum: Bicycle Mechanics
03-06-22, 07:43 PM
Replies: 118
Views: 25,241
Posted By gfk_velo

Well, water absorption is a problem with all...

Well, water absorption is a problem with all lubricants and greases are no exception - however, in greases, the presence of the oil slows the process down - however, grease in a very wet environment...
Forum: Bicycle Mechanics
02-28-22, 03:30 AM
Replies: 118
Views: 25,241
Posted By gfk_velo

This is a huge subject, one in which I've become...

This is a huge subject, one in which I've become interested because I'm a born skeptic ... I wanted to drill down (if you'll forgive the almost-pun) into the back story of oils and greases.
I read...
Forum: Bicycle Mechanics
02-28-22, 03:21 AM
Replies: 118
Views: 25,241
Posted By gfk_velo

Gently and with great respect ... "Aircraft...

Gently and with great respect ...
"Aircraft quality" in this context is utterly meaningless.

Are we talking about the grease that is used on the sliding drawers in the galley, or are we talking...
Forum: Bicycle Mechanics
02-21-22, 04:39 AM
Replies: 118
Views: 25,241
Posted By gfk_velo

As promised, here's the text from our primer on...

As promised, here's the text from our primer on oils and greases. Please use as you wish but any reproduction should carry the Copyright note.Lubricants and Greases

Lubrication oils

Lubrication...
Forum: Bicycle Mechanics
02-13-22, 07:01 PM
Replies: 118
Views: 25,241
Posted By gfk_velo

I'll post our general mechanics training course...

I'll post our general mechanics training course notes on grease here when they are completed - just working now to bring them up to date.
"All you wanted to know about oils and greases but were...
Forum: Road Cycling
02-13-22, 06:51 PM
Replies: 87
Views: 29,046
Posted By gfk_velo

doug Yes, that'll work fine. The Potenza...

doug
Yes, that'll work fine.
The Potenza chainset was changed in 2017/8 with slightly wider spaced rings (Hydraulic Optimised or HO / H11) and the LH shifter internal needed to change at that point...
Forum: Bicycle Mechanics
02-06-22, 07:35 PM
Replies: 118
Views: 25,241
Posted By gfk_velo

Yeah, apologies for that, one of my colleagues on...

Yeah, apologies for that, one of my colleagues on FB pointed me at it.
Some of my colleagues have an odd sense of humour :-D
Forum: Bicycle Mechanics
01-31-22, 05:13 AM
Replies: 118
Views: 25,241
Posted By gfk_velo

I believe it's G-1057. I'd need to check now...

I believe it's G-1057.
I'd need to check now with Engineering ... we have it in plain unlabelled tubs supplied to us some years ago when we took over as the SC in the UK.
Suffice to say, we had 3 x...
Forum: Bicycle Mechanics
01-30-22, 04:42 AM
Replies: 118
Views: 25,241
Posted By gfk_velo

Theres a lot of folk here who dont appear to know...

Theres a lot of folk here who dont appear to know much about oils, greases and the interactions between the oil the soap, other thickeners and the assemblis that theyre used in. Its a whole complex...
Forum: Classic & Vintage
10-24-21, 07:34 PM
Replies: 77
Views: 19,838
Posted By gfk_velo

I think the hub is from a rear one of these: ...

I think the hub is from a rear one of these:
https://www.retroroad.co.uk/products/campagnolo-vento-clincher-vintage-wheelset

According to a quick bit of checking in some old docs I have, the...
Forum: Classic & Vintage
08-30-21, 05:57 PM
Replies: 77
Views: 19,838
Posted By gfk_velo

Sorry, my bad. Sackcloth, ashes. His website...

Sorry, my bad. Sackcloth, ashes.
His website shows stock and the system allowed me to add one to my basket - although I didn't try to conclude the order as I don't have any use for one.
Have you...
Forum: Bicycle Mechanics
08-30-21, 04:38 PM
Replies: 18
Views: 6,527
Posted By gfk_velo

Hi Josh It sounds as if you are...

Hi Josh


It sounds as if you are reassembling something incorrectly.

There is a strip and reassembly video here, for the older Escape-type shifter the strip down is the same as this from the...
Forum: Classic & Vintage
08-23-21, 03:04 PM
Replies: 77
Views: 19,838
Posted By gfk_velo

Yes, looks like you are going to need a...

Yes, looks like you are going to need a combination of a skinny lockring and a spacer in there, for 9s.

The lockring, the narrowest one I know of is / was a Marchisio alloy job, GMRCL99 or for an...
Forum: Classic & Vintage
08-16-21, 07:35 AM
Replies: 77
Views: 19,838
Posted By gfk_velo

Depending on *which* 9s body you have, it *can*...

Depending on *which* 9s body you have, it *can* work.


You need the two-part body with three individual pawl springs rather than a single spring. The later 9s bodies (which also fit 10, 11 and...
Forum: Classic & Vintage
05-31-21, 09:40 AM
Replies: 77
Views: 19,838
Posted By gfk_velo

My pleasure! I must have been hungry when I...

My pleasure!
I must have been hungry when I typed my reply ... "food to go" ... LoL
Forum: Classic & Vintage
05-24-21, 04:55 AM
Replies: 77
Views: 19,838
Posted By gfk_velo

I'd have it checked. If it's been faced before...

I'd have it checked. If it's been faced before and there's no paint on the BB faces, though, you should be food to go.
BB axle stiffness - hard to say for sure - materials make a big difference and...
Forum: Road Cycling
05-24-21, 04:19 AM
Replies: 87
Views: 29,046
Posted By gfk_velo

No problem, Kars - enjoy! I just checked on...

No problem, Kars - enjoy!
I just checked on current production and all Centaur11 are bolted from NDS ... there's an error in the tech files, the exploded diagrams show the bolt going in from the...
Forum: Road Cycling
05-19-21, 05:23 PM
Replies: 87
Views: 29,046
Posted By gfk_velo

Sorry, yes, my bad, I didn't think to remind you...

Sorry, yes, my bad, I didn't think to remind you that all of the 11s Campagnolo UT cranks up until 2020, the bolt inserts from the gear side.

When Campagnolo launched 12s, they "skinned over" the...
Forum: Road Cycling
05-19-21, 02:02 AM
Replies: 87
Views: 29,046
Posted By gfk_velo

Hi Kars SR and RE cups have the same...

Hi Kars
SR and RE cups have the same dimensions. The only difference is that the anodising used on RE is of a harder type as it normally interfaces with bearings made of a different steel (SR...
Forum: Road Cycling
05-18-21, 05:48 AM
Replies: 87
Views: 29,046
Posted By gfk_velo

Just to double check, the Centaur 11 crank is...

Just to double check, the Centaur 11 crank is definitely 11s not 10 and definitely UltraTorque?
You definitely have UltraTorque cups in the frame?

The cups and fittings for UltraTorque are all...
Forum: Classic & Vintage
05-17-21, 02:40 PM
Replies: 77
Views: 19,838
Posted By gfk_velo

You are right - my significant other and I were...

You are right - my significant other and I were discussing, just today, the way that conversation on many forums (but seemingly, especially Facebook and Twitter) rapidly degenerates into a derogatory...
Forum: Classic & Vintage
05-10-21, 02:07 AM
Replies: 77
Views: 19,838
Posted By gfk_velo

It's unfortunate that he finds it necessary to...

It's unfortunate that he finds it necessary to present the way he does.
A lot of what he says is well considered in it's content and it's great having someone calling the cycle industry to account...
Forum: Road Cycling
05-10-21, 01:35 AM
Replies: 87
Views: 29,046
Posted By gfk_velo

The usual reason for side-to-side play is that...

The usual reason for side-to-side play is that the BB shell is under-width but since (IIRC) you are replacing into a set of UT cups that have already carried a crank set without problems, that is...
Forum: Road Cycling
05-10-21, 01:09 AM
Replies: 87
Views: 29,046
Posted By gfk_velo

Got it - yes, that makes sense and can see why it...

Got it - yes, that makes sense and can see why it would work in your circumstances.
For my reference (I try to accumulate "it works" data for those that ask ...) do you know the chainstay length, BB...
Forum: Road Cycling
04-28-21, 01:30 AM
Replies: 87
Views: 29,046
Posted By gfk_velo

You'd have to try it on your specific frame and...

You'd have to try it on your specific frame and with whatever cassette you are running.
You are fighting three things that are likely to give you problems:

Chainrings themselves are quite widely...
Forum: Road Cycling
04-27-21, 11:30 AM
Replies: 87
Views: 29,046
Posted By gfk_velo

I'll give my opposite number your side of the...

I'll give my opposite number your side of the pond a heads-up and see if I can get any delivery info.
Can't promise but I can ask the question :-D
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