Frame Size Confusion

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markgoldstein
Posts: 95
Joined: Mon Sep 01, 2014 11:53 am
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by markgoldstein

I'm trying to decide if the Merckx EMX-5 52cm frame that's currently on sale at Ribble would be a suitable fit for me.

I currently ride a more endurance-focused Scott CR1 (54cm), which has a very similar reach and effective top tube, but a very different stack and head tube length to the racier EMX-5.

I think the Mertckx frame comes with 30mm of spacers, so I could always match it to the Scott's head-tube length if necessary. The Scott's stem is 110mm/+6degrees and is running with no spacers at all. I would describe the setup as "endurance/comfortable" and can ride a century on it without any discomfort.

Here's the measurements:
Stack Reach Eff. Top Tube Head Tube
Merckx EMX-5 527 387 545mm 129mm
Scott CR1 565 383 545mm 156mm

Is the EMX-5 simply too small?
Any advice greatly appreciated!

ross
Posts: 393
Joined: Mon Mar 14, 2011 10:59 am
Location: Oxfordshire UK

by ross


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markgoldstein
Posts: 95
Joined: Mon Sep 01, 2014 11:53 am
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by markgoldstein

Hmmmm...

Or go for a slightly lower, racier setup with 10-20mm spacers?

Tenlegs
Posts: 289
Joined: Wed Jul 16, 2008 10:37 am

by Tenlegs

38mm of spacers to get the same stack would result in 8mm less reach (-6deg stem),
flip the stem and go up to a 120 (+6deg) with 18mm of spacers the fit would be virtually identical
Flipped stem/ spacer stack or change your fit, hows that?

markgoldstein
Posts: 95
Joined: Mon Sep 01, 2014 11:53 am
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by markgoldstein

I think I'm going to hold off the 52cm frame - thanks for your input :)

Tenlegs
Posts: 289
Joined: Wed Jul 16, 2008 10:37 am

by Tenlegs

Better to try out different fit with your current frame/setup, stems are cheap,
too many spacers look bad and not safe for the steerer.

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