Cassette issues

Specialroad

Hi all, just wondering if anyone can help here i have a Shimano 9 speed cassette running 12/27 & i was wondering what can i put on to make those ever steep hills a little easier?

Matthewfalle

short cage mech will go to 28 then throw on a compact chainset on the front.

or 9 speed mtb mech and the world is your oyster.

kingstongraham

New bike.

Happy to help.

drlodge

You might get a 32T cassette on there using a Alpe D'Huez Road Fairy.

I said *might*, it works for me, just.

priory

more detail essential for a reply

what sort of gear system ? road or mtb , what manufacturer and groupset/s , long cage or short or medium cage rear derailleur, what size chainrings, how many , and you might need a longer chain . would you tolerate not being able to use biggest chainring with biggest rear cog? which might not be possible if you have a big rear cog, but there was a time when nobody would do that anyway .

Matthewfalle

priory wrote:

more detail essential for a reply

what sort of gear system ? road or mtb , what manufacturer and groupset/s , long cage or short or medium cage rear derailleur, what size chainrings, how many , and you might need a longer chain . would you tolerate not being able to use biggest chainring with biggest rear cog? which might not be possible if you have a big rear cog, but there was a time when nobody would do that anyway .

replies above have everything he needs.

Specialroad

priory wrote:

more detail essential for a reply

what sort of gear system ? road or mtb , what manufacturer and groupset/s , long cage or short or medium cage rear derailleur, what size chainrings, how many , and you might need a longer chain . would you tolerate not being able to use biggest chainring with biggest rear cog? which might not be possible if you have a big rear cog, but there was a time when nobody would do that anyway .

Specialroad

priory wrote:

more detail essential for a reply

what sort of gear system ? road or mtb , what manufacturer and groupset/s , long cage or short or medium cage rear derailleur, what size chainrings, how many , and you might need a longer chain . would you tolerate not being able to use biggest chainring with biggest rear cog? which might not be possible if you have a big rear cog, but there was a time when nobody would do that anyway .

The bike is a specialized Allez sport 9 speed sora groupset on with a two chainring upfront, unsure of size though... I wouldn’t tolerate using the outer ring whilst on biggest cog

Orkneylad

Specialroad wrote:

priory wrote:

more detail essential for a reply

what sort of gear system ? road or mtb , what manufacturer and groupset/s , long cage or short or medium cage rear derailleur, what size chainrings, how many , and you might need a longer chain . would you tolerate not being able to use biggest chainring with biggest rear cog? which might not be possible if you have a big rear cog, but there was a time when nobody would do that anyway .

The bike is a specialized Allez sport 9 speed sora groupset on with a two chainring upfront, unsure of size though... I wouldn’t tolerate using the outer ring whilst on biggest cog

The number of teeth is written on the chainring. If it's a 34T already then it's just a case of rule 5.

pblakeney

Specialroad wrote:

priory wrote:

more detail essential for a reply

what sort of gear system ? road or mtb , what manufacturer and groupset/s , long cage or short or medium cage rear derailleur, what size chainrings, how many , and you might need a longer chain . would you tolerate not being able to use biggest chainring with biggest rear cog? which might not be possible if you have a big rear cog, but there was a time when nobody would do that anyway .

The bike is a specialized Allez sport 9 speed sora groupset on with a two chainring upfront, unsure of size though... I wouldn’t tolerate using the outer ring whilst on biggest cog

What you would choose to tolerate and the combination that you may end up in by accident are not necessarily exclusive.
I know from personal experience and it didn’t end well.

priory

mf might be right . A long cage rear mech can be had for £15 that probably would allow you to try a 11 to 32 or 34 cassette. But having done a lot of this in the past I have found that sometimes you can get problems with the chain rubbing on the road groupset front mech and I could not say for sure whether this would happen in your case. Perhaps someone here has tried that exact set-up.

https://www.ebay.co.uk/itm/Shimano-Altu ... SwSzRZTOcR

This week i replaced a very old mech on a 1979 road bike frame with one of these. There is a 7speed 11 to 32 cassette and 48/38 chainwheels and the front mech is RX100 which was a standard 7speed road mech in the nineties. My shifters are 7speed RX100 , made of steel to last. I thought they had worn out but it was just the rear-mech spring that had gone floppy.

So this bodes well for you. I still could not guarantee the front mech situation because mine is band-on which allows more positioning leeway and i am the sort that would twist it about or even bend it if necessary and I cannot remember if i did.

You would also have to budget for a cassette and probably mtb length of chain. It should be a very easy job to do. You would need allen keys , chain-breaker, small screwdriver for the adjuster screws, grease, bike oil, lock-ring key and big spanner.

It is possible that even a short-cage rear mech would cope with a 30tooth rear cog , but it is not designed to.

priory

road fairy interesting , I have not heard of that. More expensive than Altus rear mech .

drlodge

priory wrote:

road fairy interesting , I have not heard of that. More expensive than Altus rear mech .

Put it on my Rourke with 2012 Super Record, so can fit the Potenza 11-32 cassette. There's just enough chain take-up, however changing up gears isn't as smooth especially on the smaller cogs due to the increased distance between upper jockey wheel and sprockets.