Upgrade to 9-speed and chain line problem

superb · August 2015

Hey!

I am new here and I have few questions...

At the moment I have MTB (24 speed) with next specifications:
Front Derailleur: Shimano FD-M190
Crankset: Shimano FC-M171 42x34x24
Bottom Bracket: Chian-Haur CH-52-B
Rear Derailleur: Shimano RD-M370
Shifters: Shimano SL-M310
Cassette: Shimano CS-HG31-8l 11-32 T
Chain: KMC X8
Rear Hub: Formula DC-25RQR disc

Now I want to upgrade it to 27 speed. I want to order it:
Cassette: Shimano CS-HG300 11-34
Chain: Shimano CN-HG 53 chain
Crankset: Shimano FC-M361 42-32-22
Shifters: Shimano SL-M390

Will be any problem with the width of freehub?
Will be any compatibility problem with shifters and rear/front derailleur?
Will be any compatibility problem (chainline) with front derailleur and crank?

Is there any problem that I should be aware of?

Thanks

nicklouse · August 2015

No need to change the cranks the old ones will be fine.

But if you do check the axel length of the BB as I don't think the two you mention use the same axel lengths.

Mechs will be fine.

supersonic · August 2015

Unless your parts are worn out there is very little point in this change - the parts are very similar.

superb · August 2015

Thank you for answer.

I decided to upgrade to 9-speed and to change also crank for FC-M361 because of the number of the teeth (32/22) and Chainrings can be replaceable.

If I compare these two cranks...

http://si.shimano.com/php/download.php?file=pdf/um/SI-1LX0A-003-ENG.pdf

http://cycle.shimano.co.kr/media/techdocs/content/cycle/SI/Alivio-Acera/SI_0094A/SI-0094A-001-ENG_v1_m56577569830667768.PDF

If I look right...
Now I have crank FC-M171:
Spindle length D-NL (122.5 mm)
Chain line 47.5 mm

New crank will be FC-M361:
Spindle length LL123 (K)
Chain line 50 mm

Is that OK? Will be any problem with spindle length and chain line?

Thanks

Upgrade to 9-speed and chain line problem

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