Front Mech: Top-Swing vs Bottom-Swing Clamp Height?

TuckerUK

When the time comes to replace/upgrade my front mech I'd like really like to go to bottom-swing (OE is top-swing to allow for an additional bottle cage on downtube). I'd loose the bottle mounting ability, which isn't an issue, but what I really need to know is would the clamp actually foul one of the bottle cage thread inserts.

Without actually buying a bottom-swing mech, my best bet is hoping one of you guys/gals has both a bottom and a top swing mech fitted in your stable (same brand and type would be a bonus) and could tell me the height difference in millimetres.

I'd be eternally grateful, and you might even get a mention in my memoirs.

gtd.

What do you want measuring? :?

Got two Sram X7 mechs dual pull in low and i high clamp flavour and two Shimano Deore dual pull in Low and in High clamp

stu8975

Would be a good idea to mention what bike they are going on? just a thought . What size rings are you running on your chainset?

nicklouse

TuckerUK
will a bottom swing actually fit?

you need to see if it will. Frames fitted with a top swing mech usually have it fitted for a reason.

and the frame is a?

TuckerUK

nicklouse wrote:

TuckerUK
will a bottom swing actually fit?

you need to see if it will. Frames fitted with a top swing mech usually have it fitted for a reason.

and the frame is a?

Ah, that's the whole point of my post you see! As stated, top-swing was OE fitment to allow mounting of a bottle cage (which I have no need for).

GTD. are your mechs. actually on a bike (Might be tricky to measure if off bike)? I need the height difference of the band clamps when fitted to the downtube (e.g. , bottom swing clamps is 20mm higher measured from top of clamp to top of clamp)

stu8975 42/32/22

Frame is a hand built custom jobby.

nicklouse

like i said will itactually fit. the bottle mouns may be just in the way so that would mean getting a drill out.

or the tube joint may be too high.

so it is a no brand no name frame?

TuckerUK

nicklouse wrote:

like i said will itactually fit. the bottle mouns may be just in the way so that would mean getting a drill out.

or the tube joint may be too high.

so it is a no brand no name frame?

From my original post:...'but what I really need to know is would the clamp actually foul one of the bottle cage thread inserts.' And of course this measurement is not frame specific.