utoner34

As a title says , I have this cassette on my bike (Cube Nuroad Pro):

https://bike.shimano.com/en-EU/produ...-HG500-10.html

Now I would like to put this if possible:

https://bike.shimano.com/en-EU/produ...S-HG50-10.html

What will I need to adjust to make this work?

*Scuba 

What rear derailleur are you using? You did not provide that information which is very important.

alcjphil

You might have to install a chain with one more link

dsbrantjr

Worn chains and new cassettes do not always run well together so I install a new one chain and keep the old one together with the cassette as a set.

alcjphil

That is why I did not advise adding a link

urbanknight

Looking up the specs of a Nuroad Pro, it says you have a Shimano GRX RD-RX400 RD which can handle a 36t cog and a 41t chainwrap capacity, so you should be ok, at least with the new and longer chain recommended above. Coincidentally, the specs also suggest the bike should have come with a 11-36 cassette.

70sSanO

Kudos for your effort.

John

utoner34

Shimano Tiagra RD-4700GS, 10-Speed

I will add new chain so this is not an issue.


Thats a new version, I have last year version with Shimano Tiagra RD-4700GS, 10-Speed

https://www.wiggle.co.uk/cube-nuroad-pro-road-bike-2021

nomadmax 

Shimano says no to a 36T cog with your RD. It might work though. All it takes is money and willingness to try.

RD-4700-GS (shimano.com)

urbanknight

Ah, so max 34 with 39 chain wrap means it’s a maybe. You’d be exceeding the manufacturer’s spec by a little bit.

70sSanO

If you want a 36t, buy it and see if it works. It is probably not a panacea for lowering your ratio if you find a 34t is not low enough.

Most people, who have pushed Shimano’s max cog by 2t, find no issues. Might need a little adjustment on the B screw.

John

utoner34

I already have the cassette because I bought it before for my previous bike.

If It doesn't work I wont be able to sell it because it will be used

utoner34

I start indexing as usual from the bottom (smallest cog)? And the issue will be getting largest cog to work or the issue might be in general though all the cogs?

dedhed

Used things get bought and sold every day. CL and FBM attest to that.

nomadmax 

The "rub", pun intended, if there is one, will be with the 36T cog. The upper pulley may come in contact with the cog which could lead to the rear derailleur being pulled up into the cog. The smallest cog (number of teeth) is the #1 cog and there shouldn't be any problem on any of the cogs until you reach one that goes beyond the derailleur's capacity. There may be a work around by using one of those road link things. However, I have absolutely no experience with them.

utoner34

you mean this part will be too close together?

https://www.parktool.com/assets/img/...Adjust_008.jpg

nomadmax 

Correct.

70sSanO

I've been pushing the max cog, as with many others, for decades since I ran a 28t with an RD-7400.

The most simplistic description of an index system is that it needs to index from a set point. For top normal RD's it is the first cog. Once that is set up correctly the shifter just pulls cable and everything is nice and smooth for the first 9 cogs. There shouldn't be any shifting issues. If there are, the index is not setup correctly or you have a chain that is stretched.

Once you get the first 9 cogs resolved, you can tackle the max cog +2 36t.

The first step is to make sure the chain is long enough. The safest way is to shift to the large chainring and then to the 9th cog and manually place the chain on the 36t. You should be able to not pedal and click shifter. You need some additional RD cage movement after it is on the 36t, since the chain climbs onto the cog. If you can't even place it on the large cog the chain is definitely too short.

As already noted above, once the chain easily shifts onto the large cog, the guide pulley may come into contact with the teeth on the 36t cog. You'll need to turn the B screw until you have clearance.

The last part is capacity. You should be able to shift to the small-small and still have tension on the chain. It is not great if the chain slightly rubs on the RD cage, but I've run setups like that if the chain still has tension. If it sags you have an issue.

John

utoner34

Looking at my current 11-34 cassette when derailleur is in top position, it already quite close:

tFUnK

Is the B screw turned all the way in?

utoner34

Actually I just looked and its quite the way out.