46t 130 PCD middle ring

[Moby]

Hi

I'm trying to source a 46t 130 PCD middle ring for my FSA triple crank set. I know that TA make one but it seems to be impossible to source in the UK.

However TA also make a 46t 130 PCD inner chainring for a double crank set, which is widely available. Can anyone tell me if it can be used as a middle ring or are they incompatable (and why) ?

Regards

 

[black'n'yellow]

Can't see a problem in using it. I'm currently using a 42t middle ring on the outer position on my cross bike and it shifts fine..

 

[Drago]

And I'm using a 32t middle ring in the outer position on my 1 x 10 set up on my Trance, nary a prob.

 

[boydj]

An 'inner' ring won't have the ramps etc that a middle ring would have to facilitate shifting from small to middle ring.

 

[Crackle]

An 'inner' ring won't have the ramps etc that a middle ring would have to facilitate shifting from small to middle ring.

This: It won't work unless it's got the ramps on.

 

[mickle]

This: It won't work unless it's got the ramps on.

It'll work fine without the pins and ramps - just not so fast.

 

[simon.r]

TA 46t 130 PCD outer ring here: http://www.spacycles.co.uk/products.php?plid=m2b0s113p963

If you call them up Spa are very helpful. They have bits in stock that aren't listed on their site as well.

Edit - This is a lot cheaper: http://www.spacycles.co.uk/products.php?plid=m2b0s149p394

 

[Crackle]

It'll work fine without the pins and ramps - just not so fast.

My experience is it drops between the rings and jams. This was a Tiagra triple attempting to use Stronglight chainwheels, non-ramped.

 

[mickle]

My experience is it drops between the rings and jams. This was a Tiagra triple attempting to use Stronglight chainwheels, non-ramped.

Which has nothing to do with ramps and pins. It's caused by bent rings or incorrect spacing. Did you have them on the right way round?

 

[Crackle]

Which has nothing to do with ramps and pins. It's caused by bent rings or incorrect spacing. Did you have them on the right way round?

Yep. Tried two different size rings as well. Perhaps it was just the combination of Shimano and Stronglight because, as you said, until then I thought it made no difference except effeciency. A TA middle solved the issue immediately.