Re: Bike Mechanics Impart Their Wisdom On Vorb

Postby Conners on Mon 12/Nov/18 2:26pm

Something I was mulling over while I was stripping the rear end of my bike the other day - when you find a pivot bearing that is slightly sitcky or notchy, what is the better option out of:
1. Free up bearings and leave seals intact (for more awesomer dirt/water ingress protection)
2. Pop seals and fill with grease (but run the risk minor seal damage leading to further dirt/water ingress)

Your thoughts callers.
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Re: Bike Mechanics Impart Their Wisdom On Vorb

Postby Dougal on Mon 12/Nov/18 4:00pm

Conners wrote:Something I was mulling over while I was stripping the rear end of my bike the other day - when you find a pivot bearing that is slightly sitcky or notchy, what is the better option out of:
1. Free up bearings and leave seals intact (for more awesomer dirt/water ingress protection)
2. Pop seals and fill with grease (but run the risk minor seal damage leading to further dirt/water ingress)

Your thoughts callers.


Pop seals, hose out with brake cleaner or similar and repack with grease.

Once they go notchy you've got metal particles and dry grease inside. You need to get that out if you want them to move at anything like a bearing should.
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Re: Bike Mechanics Impart Their Wisdom On Vorb

Postby Conners on Mon 12/Nov/18 4:32pm

Dougal wrote:
Conners wrote:Something I was mulling over while I was stripping the rear end of my bike the other day - when you find a pivot bearing that is slightly sitcky or notchy, what is the better option out of:
1. Free up bearings and leave seals intact (for more awesomer dirt/water ingress protection)
2. Pop seals and fill with grease (but run the risk minor seal damage leading to further dirt/water ingress)

Your thoughts callers.


Pop seals, hose out with brake cleaner or similar and repack with grease.

Once they go notchy you've got metal particles and dry grease inside. You need to get that out if you want them to move at anything like a bearing should.

Cheers Dougal - they weren't at the notchy stage yet, but got a liberal application of grease.

I got a facebook notification the other day with a photo of the last time I changed the bearings - seven years ago!!! I know I know, I don't ride my bike enough...
Actually to be fair, I think I just don't ride it in the wet like I used to...
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Re: Bike Mechanics Impart Their Wisdom On Vorb

Postby Velocipedestrian on Mon 26/Nov/18 10:13am

My googling is inconclusive on shifter / derailleur intercompatibility. Will a Shimano 9spd mtb shifter play nicely with a 10spd road derailleur?

The Google-fu suggests all 9spd rear works, and that road 9&10 are the same shift ratio... Except for some.

I'm looking at a 105 derailleur and xtr shifter.
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Re: Bike Mechanics Impart Their Wisdom On Vorb

Postby el_booto on Mon 26/Nov/18 11:43pm

7-10sp road and mtb up to 9sp all play nice
Anything dyna-sys or 11sp road won't mix, cable ratios are different.
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Re: Bike Mechanics Impart Their Wisdom On Vorb

Postby Velocipedestrian on Tue 27/Nov/18 11:14am

el_booto wrote:7-10sp road and mtb up to 9sp all play nice
Anything dyna-sys or 11sp road won't mix, cable ratios are different.

Sweet, that's the detail I'm looking for.
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Re: Bike Mechanics Impart Their Wisdom On Vorb

Postby Velocipedestrian on Thu 6/Dec/18 12:05pm

I see PBR is selling a rockshox air shaft. Will this fit in an old 26" Lyrik?
Same internal stanchion diameter, threads, circlip fitting etc?
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Re: Bike Mechanics Impart Their Wisdom On Vorb

Postby CleverNickName on Thu 6/Dec/18 6:22pm

Nope, old lyriks don't have the dimple in the stanchion to equalise the negative air chamber.

You need one of these:
https://www.ebay.com/itm/RockShox-Air-S ... SwpYxb~k5A
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Re: Bike Mechanics Impart Their Wisdom On Vorb

Postby Velocipedestrian on Thu 6/Dec/18 7:07pm

Ah, I thought there might be something like that.
No dice, no worries.

My air lyrik has the last functional 2step internals in the world, just interested in sticking with air while it's an option. Otherwise I'll coil it up like the others.
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Re: Bike Mechanics Impart Their Wisdom On Vorb

Postby globe on Sat 8/Dec/18 6:26pm

Bled my brakes today, avid elixir 3’s. After bleeding do they have a bit of squish in the lever after the brake has engaged? That is how mine are? The brakes engage ok, but then there is a bit of sponge/squish in the lever that allows it to draw up to the handlebar. Followed the instructions as per video and pretty sure I did it right, all advice welcomed, cheers
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Re: Bike Mechanics Impart Their Wisdom On Vorb

Postby Velocipedestrian on Sat 8/Dec/18 7:30pm

Up to the bar, no.
But elixirs are a bit notorious...
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Re: Bike Mechanics Impart Their Wisdom On Vorb

Postby globe on Sun 9/Dec/18 6:06am

But they should be a wee bit soft past the point of engagement aye?
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Re: Bike Mechanics Impart Their Wisdom On Vorb

Postby Conners on Sun 9/Dec/18 5:31pm

globe wrote:But they should be a wee bit soft past the point of engagement aye?

I’ve never used Elixers, but I don’t think any brakes should have any softness beyond the bite point?

You sure it’s not the lever flexing? Once the fluid is compressed I can’t see how there could/should be any movement.

I could be wrong though.
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Re: Bike Mechanics Impart Their Wisdom On Vorb

Postby Velocipedestrian on Sun 9/Dec/18 6:41pm

Conners wrote:Once the fluid is compressed I can’t see how there could/should be any movement.

Unless there's something in the fluid that's compressible... Like air.
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Re: Bike Mechanics Impart Their Wisdom On Vorb

Postby AgrAde on Sun 9/Dec/18 10:05pm

It'll never be rock hard, but it should feel crisp when it engages with the pads and feel quite firm.
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