Perfect, thanks, you just answered a question I was about to post about that. I have never been in a race where I had such a tailwind on a descent that I could have used another gear. I guess next time I do AZ, I will make sure I have a larger chain ring.
Triathlon Forum
Login required to started new threads
Login required to post replies
Re: IM AZ Gearing [ericM40-44]
[ In reply to ]
Re: IM AZ Gearing [Triathletetoth]
[ In reply to ]
Triathletetoth wrote:
You will only use the 10-17 gearing so the rest is useless. ( doesn't matter)This is what I was thinking (except 11-17, as I'm unaware of where you can find a 10-tooth cog).
The 11-25 and 11-28 basically swap out the two largest cogs compared to other cassettes. On the 11-25, a 23 and 25 are your two largest cogs. On the 11-28, a 24 and 28 are your two largest cogs. All other gears are the same.
But on the 11-23, instead of changing the two largest cogs, you get an additional middle cog and one larger cog. So you get a 16-tooth gear (between the 15 and 17) and then get a 23 as the largest cog.
If that 16-tooth gear is helpful for you in your optimal cadence range (which it may be on a flat and fast course), then I wold use an 11-23 cassette.
Re: IM AZ Gearing [elburrito99]
[ In reply to ]
elburrito99 wrote:
Triathletetoth wrote:
You will only use the 10-17 gearing so the rest is useless. ( doesn't matter)This is what I was thinking (except 11-17, as I'm unaware of where you can find a 10-tooth cog).
The 11-25 and 11-28 basically swap out the two largest cogs compared to other cassettes. On the 11-25, a 23 and 25 are your two largest cogs. On the 11-28, a 24 and 28 are your two largest cogs. All other gears are the same.
But on the 11-23, instead of changing the two largest cogs, you get an additional middle cog and one larger cog. So you get a 16-tooth gear (between the 15 and 17) and then get a 23 as the largest cog.
If that 16-tooth gear is helpful for you in your optimal cadence range (which it may be on a flat and fast course), then I wold use an 11-23 cassette.
My brain is mush from turkey dinner, so I am just going to ask, but it sounds like for a 55 big ring and a 11-23 cassette would be optimal. You would gain the low end in the big ring and the additional 16th gear for flat road gearing. Seems like this would be a nice middle ground versus the 55 and a 10-28. Thoughts?
-----
"i’m the one guy who says don’t force the stupid people to be quiet — i want to know who the morons are." -- mark cuban
Re: IM AZ Gearing [Dnowak]
[ In reply to ]
Dnowak wrote:
For this particular race, would have helped. But otherwise I am usually fine with the 53 when paired with an 11.after my chain snapped, I was too paranoid to change into the small chainring (I did want to). I was riding 53 in front and I went up to 23 at the back (on an 11-25) and I was ok. It was tough but it sure kept me focused!
Based on that, I agree with Eric, I think next year I might ride a 55 and an 11-25 cassette. So probably a 55/42 up front
____________________________________
Are you ready to do an Ultraman? | How I calculate Ironman race fueling | Strength Training for Athletes |
Re: IM AZ Gearing [robgray]
[ In reply to ]
I hadn't thought about the 55 before Eric posted. I agree, I think a 55/42 front and 11-25 or 11-26 would be best for AZ.
Re: IM AZ Gearing [Dnowak]
[ In reply to ]
Dnowak wrote:
To post a follow-up on this for future IM AZ races: I ordered an 11-23 cassette, but it didn't come in time before I left so I just raced on my 11-28 and am glad I did. I ended up riding a 4:42 so just what I expected. What I didn't expect what the very strong headwind which got stronger by the lap. I was going 13mph for a time on 3rd lap "climb" up to Shea. I was in the small ring and the 25 cassette for this and was very glad to have more gears than an 11-23. Coming back, could have definitely used a 10 or smaller though as I was going 45 mph with minimal effort. If I was to do again, I would go with an 11-25 or 11-26 in case there are high winds.x2 on this. Maybe bring 11-23 and 11-25, if you care. Headwinds going up the grade made this essentially a "hilly" course this year, but steady 15-20 mph headwinds with 30 mph gusts are not at all the norm. I've ridden an 53/39 with 11-25 all 3 times at IMAZ and didn't use my easiest gears until this year. Mashers with big gears up front could've gotten away with 11-23; spinners would've probably used all gears in an 11-28.
--------------
Hard work beats talent when talent doesn't work hard.
Re: IM AZ Gearing [robgray]
[ In reply to ]
robgray wrote:
Dnowak wrote:
For this particular race, would have helped. But otherwise I am usually fine with the 53 when paired with an 11.after my chain snapped, I was too paranoid to change into the small chainring (I did want to). I was riding 53 in front and I went up to 23 at the back (on an 11-25) and I was ok. It was tough but it sure kept me focused!
Based on that, I agree with Eric, I think next year I might ride a 55 and an 11-25 cassette. So probably a 55/42 up front
Great so you tested the single chain ring concept. Cool! Honestly, I think 54T with a 11-28 could be used on most courses except ones with steep climbs putting you under 10mph. For flat or rolling courses without a strong wind, maybe a 50T.
TrainingBible Coaching
http://www.trainingbible.com
Re: IM AZ Gearing [motoguy128]
[ In reply to ]
I started running a 54-42 with 11-28 (10 speed) in September. It's a little more challenging to climb with when the grade gets to 15%, but overall worth the benefit. I very rarely spin out now, and was cruising with the 54-11 on the way down the Beeline @ IMAZ each lap.
Thoughts on being an Urban Triathlete
Thoughts on being an Urban Triathlete
I rode 4:38 on 55/42 and 11-23. I never ran out of easy gears and loved the 55-11 coming home. I'd run the same setup again on that course without question, especially since the wind this year was reportedly about as bad as it ever gets.