Casette on new Wheels - Gap?

Tzarkahn

Hello All,

Just a quick question you might be able to answer,

I picked up a new set of wheels to replace my stock Shimano ones that came with the bike and were wearing out.

I went with these: Shimano R501 -

And I have this Casette - Shimano 105 12-27t

When I replaced the Casette as-is, onto the new wheels there seems to be a gap between the smallest gear and the frame. When shifting it "over shifts" and attempts to leave the smallest gear and it at the other end it won't reach the biggest gear correctly.

My assumption is that there is a spacer missing or I need to readjust the Rear Mech to deal with this, has anyone got any experience with this, which is the best practise, I don't mind doing either but my gut is telling me I should find some sort of spacer to go onto the hub itself behind the Cassette.

Appreciate any and all help.

Tzarkahn

Seems I can't Post Links

Wheels were from Merlin Cycles - Shimano R501 Wheels
Casette from CRC - Shimano 105 5700 10 Speed Road Cassette

mirrormatrix

Bought more or less the same setup at Christmas. No spacer as far as I recall. Is the casette tight onto the wheel (i.e. no play in it)? Maybe you just need to adjust the rear deraileur?

Tzarkahn

Yeah, no play in it, all set solid and spinning fine.

I can't remember a spacer and I checked the old wheel, nothing left on it.

Cee-Jay-Cee

Tzarkahn wrote: »

Yeah, no play in it, all set solid and spinning fine.

I can't remember a spacer and I checked the old wheel, nothing left on it.

Did you check the old cassette? They sometimes become stuck on with oil/crud.

Tzarkahn

I'd replaced the Casette onto the other wheel a month or so back, just replaced the wheels recently.

If there was anything its gone with the old cassette but I don't remember leaving any bits out, it fitted perfectly on the old wheel.

sy

Sounds like you need to adjust rear mech. Lots of videos on youtube

Brian?

Are you sure your wheel is on properly?

Tzarkahn

Yeah the Wheel is on correctly, it only has one way it will sit correct in the frame.

Eamonnator

If your wheel is on correctly and there is no play in the cassette, your next move should be to adjust your rear mech, limiting screws and cable tension.

Tzarkahn

Eamonnator wrote: »

If your wheel is on correctly and there is no play in the cassette, your next move should be to adjust your rear mech, limiting screws and cable tension.

That's what I figured.

I'm going to take it down the Bike shop and see what they say when I get the chance.

ford2600

Tzarkahn wrote: »

That's what I figured.

I'm going to take it down the Bike shop and see what they say when I get the chance.

Park tools website has an excellent maintenance guide.

Rear mech is a simple device. Spring pulling against cable tension by indexed lever.

Movement is limited by limit screws. Nothing more to it other than setting correct tension.

Eamonnator

Tzarkahn wrote: »

That's what I figured.

I'm going to take it down the Bike shop and see what they say when I get the chance.

This is a very simple job. You should be able to do it yourself.the only tool needed is a screwdriver.
Watch the u tube clips and follow instructions.

Tzarkahn

I'll be doing the adjustment myself, just want to make sure I'm not missing a spacer or something.

nilhg

I swapped a tiagra 4600 cassette for a 105 5700 recently, the 105 came with a spacer ring in the pack and required it to fit tightly (no spacer on the 4600), indexing was perfect after the swap.

H.E. Pennypacker

nilhg wrote: »

I swapped a tiagra 4600 cassette for a 105 5700 recently, the 105 came with a spacer ring in the pack and required it to fit tightly (no spacer on the 4600), indexing was perfect after the swap.

I was just about to say the same - I got a spacer ring with my 105 cassette recently. When fitted without it, the sprockets rattled slightly (I'm curious so I had to see if it was optional or not).

OP - do your sprockets rattle at all or have any play?

Tzarkahn

H.E. Pennypacker wrote: »

I was just about to say the same - I got a spacer ring with my 105 cassette recently. When fitted without it, the sprockets rattled slightly (I'm curious so I had to see if it was optional or not).

OP - do your sprockets rattle at all or have any play?

I've no play or rattling at all, the only issue seems to be that the Casette is 1 'space' shorter than it should be.

In this case the thing replaced was the wheels, the Casette was replaced like for like on the old wheels a couple of months ago and was fine.

Brian?

Tzarkahn wrote: »

I've no play or rattling at all, the only issue seems to be that the Casette is 1 'space' shorter than it should be.

In this case the thing replaced was the wheels, the Casette was replaced like for like on the old wheels a couple of months ago and was fine.

There's only a couple of mm thread on the lockring. If the cassette is not rattling then you're not missing a spacer IMO, it would have to be a seriously thin space to fit in and allow the lockring to still tighten.

H.E. Pennypacker

If everything seems tight then it does look like its a case of adjusting the limit screws on the rear derailleur.