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BICIVOLADOR · 2017-05-11 3:59pm

Hi guys,

Just a looking for a little advice: I've finally received the cranks for my master. When installing, I realized I can't get a perfectly aligned chainline. Looks like I should 'push' the chainwheel/crank or 'pull' the freewheel. Couldn't measure how much accurately, but I'm guessing 2-4mm.

The thing is, I can't push the spindle and chainwheel further, since the BB comes with locking collars (YST sealed bearing conversion kit). Should I add spacers on the freewheel? Use it without one of the collars?

Any input appreciated!

BICIVOLADOR · 2017-05-11 4:31pm

Sorry for the double post, but pics aren't showing properly.

Indyjps · 2017-05-11 4:31pm

Cant see your pics, is the chainring tight against the locking collar?

Im guessing youre using the square taper sealed american bottom bracket.

See them now. Id get the locking collar cut down on thickness. Is the square taper even seating all the way?

Youve got a little room to shim the freewheel.

Last edited by Indyjps (2017-05-11 4:34pm)

BICIVOLADOR · 2017-05-11 4:34pm

Indyjps wrote:
Cant see your pics, is the chainring tight against the locking collar?

Im guessing youre using the square taper sealed american bottom bracket.

yup, just uploaded them somewhere else.

I'm using this YST square taper sealed BB:

troynlori · 2017-05-11 4:35pm

If your crank bottomed out against the collar something bigger is wrong that just the chainline....

BICIVOLADOR · 2017-05-11 5:05pm

troynlori wrote:
If your crank bottomed out against the collar something bigger is wrong that just the chainline....

Hmm, well, since I was trying to align the chainwheel/crank and the freewheel I needed to push a little bit the spindle, so the amount of space between the frame and cranks is basically the width of the collar. Thought this was 'normal'.

troynlori · 2017-05-11 6:28pm

What is the distance from the middle of your bottom bracket (widthwise) to the chainring?

BICIVOLADOR · 2017-05-11 6:51pm

troynlori wrote:
What is the distance from the middle of your bottom bracket (widthwise) to the chainring?

From the middle of the bb shell, it's around 4.3mm. The spacers/lock collars are 11mm.

This is how it is at the moment (cranks arms not fully tightned, just pressed):

BICIVOLADOR · 2017-05-11 6:52pm

I meant 4.3cm

troynlori · 2017-05-11 6:56pm

There's no problem with your chainline. Push the crank off the collar by a mm or two, put a chain on, and go ride....

vwzx · 2017-05-12 7:24am

I would install the chain, make everything tight and then see if you are still having an issue.

troynlori · 2017-05-12 9:51am

Here's how I am looking at it. Rear wheels are ~110mm wide axle nut to axle nut. Freewheel teeth sit in about 8-12 mm (closer to 8 normally) from the drop out. Rear drop outs should be centered on the frame. So 55mm from center to drop out. 55 - (8 to 12) is 47 -43.

Your distance is 43 mm + 1=2 mm to center of chain wheel....45 mm. All lines up.

BICIVOLADOR · 2017-05-12 3:03pm

Thanks for the input so far guys.

@troynlori, yup, your measurements are very close. The freewheel teeth on this tuff II though, are sitting around 12mm from the dropout.

I've already installed the bb and cranks and they spin smoothly. didn't adjusted the collars yet, since with these bb's you can slide somehow easily the spindle to align the chainwheel.

I also Bought a new chain and a few 0.8mm washers to shim the freewheel if needed. I think the alignment might be 2-4mm off as it is now, so I'll install the chain and see how it goes.

astroidbeltwalker · 2019-11-24 6:16pm

lock collars on the inside

Scraplord · 2019-11-24 7:11pm

The chainline looks pretty bad from what I can make out. You need a narrower spindle and thinner lock collars.

1979 · 2019-11-24 9:56pm

2+ years later if he hasn't figured it out he's not riding

BICIVOLADOR · 2019-11-25 7:03am

1979 wrote:
2+ years later if he hasn't figured it out he's not riding

Yup, 2 years and counting!

1979 · 2019-11-25 5:16pm

This lock washer is too thick. Your chainring should not be that far away from the BB to line up with the freewheel. You gotta swap around some hardware. Or the rear is bent, hard to tell from pics.

Last edited by 1979 (2019-11-25 5:18pm)

astroidbeltwalker · 2019-11-25 5:23pm

yeah that add is misleading have yet to see a working sealed yst

1979 · 2019-11-25 5:44pm

Second thoughts Just wondering if that's a retro Master? If so it will probably only accept modern cranks like Profiles without locknuts (minimal spacers) and possibly a smaller chain wheel for clearing the chain stay? If so I'm not aware of any square taper BB that would work.

astroidbeltwalker · 2019-11-26 4:11pm

1979 wrote:
Second thoughts Just wondering if that's a retro Master? If so it will probably only accept modern cranks like Profiles without locknuts (minimal spacers) and possibly a smaller chain wheel for clearing the chain stay? If so I'm not aware of any square taper BB that would work.

euro conversion shorter spindle

eric12 · 2019-11-26 4:18pm

BICIVOLADOR wrote:
1979 wrote:
2+ years later if he hasn't figured it out he's not riding
Yup, 2 years and counting!

https://i.imgur.com/F5dmV1h.jpg

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Chainline not 100%- using YST sealed BB

#1 2017-05-11 3:59pm

Chainline not 100%- using YST sealed BB

#2 2017-05-11 4:31pm

Re: Chainline not 100%- using YST sealed BB

#3 2017-05-11 4:31pm

Re: Chainline not 100%- using YST sealed BB

#4 2017-05-11 4:34pm

Re: Chainline not 100%- using YST sealed BB

Indyjps wrote:

#5 2017-05-11 4:35pm

Re: Chainline not 100%- using YST sealed BB

#6 2017-05-11 5:05pm

Re: Chainline not 100%- using YST sealed BB

troynlori wrote:

#7 2017-05-11 6:28pm

Re: Chainline not 100%- using YST sealed BB

#8 2017-05-11 6:51pm

Re: Chainline not 100%- using YST sealed BB

troynlori wrote:

#9 2017-05-11 6:52pm

Re: Chainline not 100%- using YST sealed BB

#10 2017-05-11 6:56pm

Re: Chainline not 100%- using YST sealed BB

#11 2017-05-12 7:24am

Re: Chainline not 100%- using YST sealed BB

#12 2017-05-12 9:51am

Re: Chainline not 100%- using YST sealed BB

#13 2017-05-12 3:03pm

Re: Chainline not 100%- using YST sealed BB

#14 2019-11-24 6:16pm

Re: Chainline not 100%- using YST sealed BB

#15 2019-11-24 7:11pm

Re: Chainline not 100%- using YST sealed BB

#16 2019-11-24 9:56pm

Re: Chainline not 100%- using YST sealed BB

#17 2019-11-25 7:03am

Re: Chainline not 100%- using YST sealed BB

1979 wrote:

#18 2019-11-25 5:16pm

Re: Chainline not 100%- using YST sealed BB

#19 2019-11-25 5:23pm

Re: Chainline not 100%- using YST sealed BB

#20 2019-11-25 5:44pm

Re: Chainline not 100%- using YST sealed BB

#21 2019-11-26 4:11pm

Re: Chainline not 100%- using YST sealed BB

1979 wrote:

#22 2019-11-26 4:18pm

Re: Chainline not 100%- using YST sealed BB

BICIVOLADOR wrote:

1979 wrote:

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