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UCI Legal Aerobars Measurement
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For 17-18 group, my son's older road TT bike has traditional manual shifters on the bar ends (not return-to-center). Per UCI specs, the horizontal distance from the center of BB to the end of the bars cannot exceed 75 cm (assuming no morph exemption). For manual shifters, is that 75 cm measured to the axis (bolt) point or the very end of the shifters when extended out? I've read it both ways. Anyone know what the rule is for 2019?

End of shifters:
Page 35 https://www.uci.org/...f?sfvrsn=fd56e265_32

Axis point:
https://www.velonews.com/...eno-adriatico_163366
Page 13 https://road.cc/...,%20March%202012.pdf

Thanks!
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Re: UCI Legal Aerobars Measurement [cringe] [ In reply to ]
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From what I can tell, it's with the shifters extending all the way out at it's furthest point for the reach.
They also take the measurement for the height with the shifters sticking as far up as possible
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Re: UCI Legal Aerobars Measurement [Charleslo_99] [ In reply to ]
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Charleslo_99 wrote:
From what I can tell, it's with the shifters extending all the way out at it's furthest point for the reach.
They also take the measurement for the height with the shifters sticking as far up as possible

This.

If it's USAC I wouldn't worry about it too much unless you're doing something dumb.

If you're in some weird junior category under the UCI stuff, then it's the longest possible distance and tallest distance on the extension/bar end shifters.

Learn to grip the bar ends with your pinky and next finger and your palm instead of the entire hand.

Or give in to the handout to the bike industry and buy DI2.

I'm considering if my 1x setup works out, permanently removing the left hand shifter and running that extension longer to keep it in-line with the right hand extension. Then, if the road is bumpy pull my right hand back for a few seconds. If it isn't bumpy, use the full length of the left side extension.
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Re: UCI Legal Aerobars Measurement [burnthesheep] [ In reply to ]
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> Learn to grip the bar ends with your pinky and next finger and your palm instead of the entire hand.

Yep. Had bike fitter cut about 5cm off the bars (just moving them back would be into knees), moved them back for UCI race. Really must shift with pinkys in this set up. All in the name of UCI safety and fairness. Will move forward after event. I don't know how someone just under 6' can comply with this since they wouldn't get the ME.

> Or give in to the handout to the bike industry and buy DI2.

$100 here, $200 there, etc. It adds up quickly. Thanks!
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Re: UCI Legal Aerobars Measurement [cringe] [ In reply to ]
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FWIW though, I think the rule change about the ME's was worded that EVERYONE gets one of them. Not just people over a certain height. Pick saddle, pick extensions. Am I wrong there?


We all know the UCI are a bunch of crotchety Euro dudes with no sense.........but they need to fix the rule so that it deals with the angles of the body levers. Not some arbitrary overall measurement.

IMHO what would be best is:

-everyone gets to put the saddle dead even with the center of the BB if they like

-everyone has to abide by a max angle between the lower and upper arms

-everyone has to abide by a max angle between the upper arm and torso

If you did that, it's basic geometry. I think they arrived at what they did because they want to "jig" the bikes for inspection instead of the bike plus the person.

But ignoring the person and writing rules for one mechanical jig is stupid.

If you notice triathlon, while innovative, still doesn't have anything that's unorthodox to a silly point.
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Re: UCI Legal Aerobars Measurement [burnthesheep] [ In reply to ]
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I don't think you could include someone's position in an inspection since they could sit slightly position during the inspection to pass, but in another position during racing. Keeping to equipment gives them hard points to measure off of, how the rider rides those points is up to them.

Strava
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Re: UCI Legal Aerobars Measurement [cringe] [ In reply to ]
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bike is measured on the jig without the rider

you can take one exemption no questions asked (either saddle at -5 bars at 80cm or saddle at 0 and bars at 75)

the extension is measured to the very end of the shifter at it's farthest resting point. For mechanical shifters that point is taken at it's furthest at each point (so they move it straight out for reach, then move it straight up for the 10cm rule) For R2C shifters it is always measured to whatever the "neutral" (return) position of the shifter is. For Di2/electronic, it's measured to the end of the unit.

The one document you have linked (measure to the bolt) is outdated

My Blog - http://leegoocrap.blogspot.com
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Re: UCI Legal Aerobars Measurement [Morelock] [ In reply to ]
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> you can take one exemption no questions asked...


That's good to know! This thread supports what you say. Thanks.

http://www.timetriallingforum.co.uk/...ological-exemptions/
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Re: UCI Legal Aerobars Measurement [cringe] [ In reply to ]
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In case it helps - here is a video explaining the UCI regs:



AeroCoach UK
http://www.aero-coach.co.uk
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