Author Topic: Low gears - will this work?  (Read 1187 times)

robgul

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Low gears - will this work?
« on: 19 May, 2024, 12:54:31 pm »
A customer has an 11 speed set-up and wants a lower gear - suggestion is for an 11-36 cassette with a 105 rear mech on an extender to get the clearance.  Crankset is GRX 46/30.

I know from quite a few other conversions I've done that the set up at the back works with a 50/34 crankset . . .  will it work with the 46/30?   (apart from the cadence required to balance in the lowest gear  ;D)

Must say I can't see why it wouldn't.

Re: Low gears - will this work?
« Reply #1 on: 19 May, 2024, 05:19:02 pm »
The tooth difference between the two chainrings is the same in both cases so I can't see why it wouldn't work.
I am often asked, what does YOAV stand for? It stands for Yoav On A Velo

Re: Low gears - will this work?
« Reply #2 on: 19 May, 2024, 07:16:09 pm »
As long as your front mech will work then all will be well

(If band fit then all well, if direct mount then hopefully enough length to allow front mech to drop down to accommodate smaller chain rings.)

robgul

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Re: Low gears - will this work?
« Reply #3 on: 19 May, 2024, 07:27:43 pm »
As long as your front mech will work then all will be well

(If band fit then all well, if direct mount then hopefully enough length to allow front mech to drop down to accommodate smaller chain rings.)

It's a band-on front mech - I'm confident!

Re: Low gears - will this work?
« Reply #4 on: 20 May, 2024, 10:09:41 am »
Another for the mix. I have been looking at the recentish 10sp Microshift Sword part-group*, in this electronic / hydraulic age their claim to fame is that they are 100% mechanical (gears & brakes). Looks half the price of a GRX "upgrade"
https://www.microshift.com/products/groups/sword/

It has 1x & 2x versions, I would go with 2x which has 48/31 or 46/29 rings, both go with a 11-38 cassette, there are 11-40 & 11-42 cassettes which Microshift say are not recommended with Sword but I might try if 38 was not enough. I am currently a 9 sp mixed road / mtb triple 48/36/24 & 12-36 but it has done approx 40,000kms and getting a bit past it?

*Levers, FD, RD, cranks, cassette, my choice of disc brake (my current still goes)

Re: Low gears - will this work?
« Reply #5 on: 20 May, 2024, 10:54:51 am »
A lot of Microshift products look good to me.  The big problem seems to be finding somewhere in the UK to buy them.

Re: Low gears - will this work?
« Reply #6 on: 20 May, 2024, 11:35:06 am »
Fitting brand new drop bar cable discs in 2024 is a peculiar act of masochism.

They exist for cheapskate OEMs, not people who have to ride them.

robgul

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Re: Low gears - will this work?
« Reply #7 on: 20 May, 2024, 11:55:55 am »
Fitting brand new drop bar cable discs in 2024 is a peculiar act of masochism.

They exist for cheapskate OEMs, not people who have to ride them.

Hmm - I beg to differ . . .  the simplicity is a great benefit (and IME with one cable and one hydrauic machine only minimal difference in the "braking experience"). . . the Microshift website's mantra is in line with my thinking . . . why make it complicated?

Re: Low gears - will this work?
« Reply #8 on: 20 May, 2024, 12:24:12 pm »
I beg to differ, too. They exist for people like me who make a choice.

ElyDave

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Re: Low gears - will this work?
« Reply #9 on: 20 May, 2024, 12:26:08 pm »
Fitting brand new drop bar cable discs in 2024 is a peculiar act of masochism.

They exist for cheapskate OEMs, not people who have to ride them.

I am entirely happy with my cable operated discs on three bikes, a mix of BB7 roads, and TRP. All extremely easy to set up and maintain
“Procrastination is the thief of time, collar him.” –Charles Dickens

Kim

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Re: Low gears - will this work?
« Reply #10 on: 20 May, 2024, 01:53:55 pm »
Fitting brand new drop bar cable discs in 2024 is a peculiar act of masochism.

Yeah, but it's the drop bars that are masochistic, not the brakes   ;D

Re: Low gears - will this work?
« Reply #11 on: 20 May, 2024, 03:42:06 pm »
I dont know if it's helpful or not, but my gravel bike has a  48/32 chainring and a 42 cassette on the rear. It shifts fine.
often lost.

robgul

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Re: Low gears - will this work?
« Reply #12 on: 20 May, 2024, 04:22:13 pm »
Back to the question . . . I've ordered the cassette so will find out in due course!

Re: Low gears - will this work?
« Reply #13 on: 21 May, 2024, 12:15:55 am »
Fitting brand new drop bar cable discs in 2024 is a peculiar act of masochism.

They exist for cheapskate OEMs, not people who have to ride them.

Could be me, cable discs on 2 bikes amounting to 11 years and maybe 50,000kms

IanDG

  • The p*** artist formerly known as 'Windy'
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Re: Low gears - will this work?
« Reply #14 on: 21 May, 2024, 06:51:24 am »
Just fitted 46/34/24 with 11-34 9spd cassette on the Trucker and works fine with an Alivio rear mech.

Re: Low gears - will this work?
« Reply #15 on: 21 May, 2024, 09:16:09 am »
I have that setup only with an 11-40 cassette using a 105 rear mech. 

It indexes almost perfectly with a wolf tooth.  The only shift that doesn't work perfectly is the upshift from the very bottom gear - the rear 40T - to the second-lowest gear / second-largest sprocket: this needs a 2-up then 1-down to achieve it, which is no hardship.  I recall having to do similar on 9-speed Shimano set-ups with large cassettes in the past. 

Without the wolf tooth the shifting was usable but not nearly as good.

I believe frame-specific factors such as chainstay length, BB drop and shape of hanger will have an impact, but would be confident to try what you suggest.

Re: Low gears - will this work?
« Reply #16 on: 22 May, 2024, 01:31:37 am »
Just fitted 46/34/24 with 11-34 9spd cassette on the Trucker and works fine with an Alivio rear mech.

What cranks/rings (46/34/24) did you use?

IanDG

  • The p*** artist formerly known as 'Windy'
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Re: Low gears - will this work?
« Reply #17 on: 22 May, 2024, 06:42:33 am »
Just fitted 46/34/24 with 11-34 9spd cassette on the Trucker and works fine with an Alivio rear mech.

What cranks/rings (46/34/24) did you use?

Stronglight Impact

Spa do their own version too

Re: Low gears - will this work?
« Reply #18 on: 22 May, 2024, 07:49:20 am »
A lot of Microshift products look good to me.  The big problem seems to be finding somewhere in the UK to buy them.

Their main UK distributor doesn't seem to have any sword stock until Aug 2024
Cycle and recycle.   SS Wilson

Re: Low gears - will this work?
« Reply #19 on: 22 May, 2024, 08:41:03 am »
I run 48 / 38 / 28 with 12-36 without issues in 9 speed flavour. Whether it works, for the setup you propose, will be entirely down to rear derailleur choice and setup.