Enought time for event?

[vickster]

View attachment 455691

So would something like that work?

The tools you mention are only a tenner on amazon

No because you need a 9 speed one no?
And you'll need a new chain and potentially a long cage derailleur

Where did you find the cassette for only £15 (and is it actually available?)

 

[vickster]

SRAM and Shimano cassettes are cross compatible

https://www.halfords.com/cycling/bi...ain-cables/sram-pg-950-9-speed-cassette-11-32

 

[CXRAndy]

View attachment 455691

So would something like that work?

The tools you mention are only a tenner on amazon

That is 10 speed you need 9

The Chain reaction link was £16.99 .

Looking at the photos of your bike it seems to have a long derailleur cage.

 

[gazza81]

Just on Facebook

Ok i understand now.

A friend just suggested iget a 11 30 9 speed and it should be a straight swap and give me some lower gears?

 

[gazza81]

That is 10 speed you need 9

The Chain reaction link was £16.99 .

Looking at the photos of your bike it seems to have a long derailleur cage.

So if it has a long one i can get away with a bigger cassette?

 

[freiston]

If your rear derailleur is a Sora RD-R3000, then a new 11-34t cassette will fit. Probably also need a new chain. Under £40 for parts, so shouldn't be excessively pricey at lbs. But would make a hell of a difference.

No because you need a 9 speed one no?
And you'll need a new chain and potentially a long cage derailleur

Where did you find the cassette for only £15 (and is it actually available?)

I've recently swapped out a 11-28T 9 spd cassette for an 11-34T cassette with a 26/36/48 triple on the front but my Tiagra rear changer didn't have the capacity and so I had to get a new rear changer too - I got the Sora RD-R3000, so if the OP has that model, it will handle the capacity fine.

I would definitely recommend getting the chain whip and cassette tool and doing the job yourself (you will also need a chain-tool as you will need a new chain - wear aside, the current one will most likely be too short). The ability to do the necessary gear adjustment is something that you will need to maintain your bike anyway and the rest of the work is not difficult - it will stand you in good stead for any future work/maintenance (possibly including emergency roadside repairs).

EDIT: - my rear changer is Sora RD-R3000GS - GS indicates medium length cage. My old Tiagra was GS too but the capacity was different iirc.

 

[gazza81]

Where do i find if i have a rd r3000?

Theres nothing on the derailleur at all

 

[gazza81]

Just found this on a review of the bike

The Triban 520 comes with a triple chainset (30/39/50) and a Sunrace 12-25 cassette. That gives a similar range to a 50/34 compact and an 11-28 cassette, but opens up the option to fit a much wider cassette; the mid cage rear mech will cope with an 11-32, which will give you plenty of winching gears if you decide to load up the Triban for touring.

So for a easy life maybe just go 11 32?

 

[freiston]

Where do i find if i have a rd r3000?

Theres nothing on the derailleur at all

It will be on the back of the inner plate of the parallelogram (the bit facing the spokes) but I just made a "rough" measurement of my changer and it's about 95 mm sprocket centre to sprocket centre. Here's a link to the spec sheet https://bike.shimano.com/en-EU/product/component/sora-r3000/RD-R3000-GS.html

Edit: - if it is the GS then 34T should be fine. Have a look at http://www.gear-calculator.com to get an idea of the difference between a 32T and a 34T cassette

 

[vickster]

Just found this on a review of the bike

The Triban 520 comes with a triple chainset (30/39/50) and a Sunrace 12-25 cassette. That gives a similar range to a 50/34 compact and an 11-28 cassette, but opens up the option to fit a much wider cassette; the mid cage rear mech will cope with an 11-32, which will give you plenty of winching gears if you decide to load up the Triban for touring.

So for a easy life maybe just go 11 32?

Yes and new chain and the necessary tools

 

[CXRAndy]

So if it has a long one i can get away with a bigger cassette?
View attachment 455705 View attachment 455712

Take a photo from the non drive side whilst chain on biggest cog and on smallest chainring. Would like to see the gap between derailleur and biggest cog.

 

[gazza81]

Sorry only just had a chance to get in tje shed!

Also i phoned halfords and they only charge £6 to change the cassette so ill probably do that

 

[gazza81]

Does that look like enough of a gap for a 11 32?

 

[CXRAndy]

Does that look like enough of a gap for a 11 32?

Can you see the derailleur model number?

According to others post, if its a GS version upto 34t cassette should work. Have a good look all over the derailleur for a number

 

[gazza81]

Found a post from another forum where the guy fit a 11 34 and a new chain with no problems.

Not sure if im allowed to link another forum but...
https://www.bikeradar.com/forums/viewtopic.php?t=13089604

If thats the case i will order online somewhere and get halfords to fit for 6 quid