General Discussion Triathlon Talk » Bike Question Re: Chain Ring Rss Feed  
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2004-12-20 3:40 PM

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Subject: Bike Question Re: Chain Ring

Hi, again, All:

I know - all of a sudden with all the questions, but...

As many of you already know, I got a new bike this weekend (Giant TCR Aero 2). It has a double chain ring.  I am thinking of switching it out for a triple, but just wanted to get some thoughts on the advantages/disadvantages of a triple compared to a double, from those with more experience with such things.

Again, thanks in advance;

Tim



2004-12-20 3:50 PM
in reply to: #94562

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Subject: RE: Bike Question Re: Chain Ring
Hi Tim,

I was considering the same thing, and asked the question here as well. It boiled down to what kind of riding you will do. The third chain ring will allow easier pedaling up steep hills, but on relatively flat ground will go unused. In my research into this topic, I found that it might be better to go with a smaller set of doubles versus switching to a three. Going from a 52 in the front to a 46 would change the feeling for the entire range of gears in the back, and also make your cadence higher when on flat ground. In my reading I see that a higher cadence makes for fresher legs on the run.

Any thoughts from the veterans?

Mike

"Semper Gumby; always flexible"
2004-12-20 3:59 PM
in reply to: #94562

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Subject: RE: Bike Question Re: Chain Ring
2004-12-20 4:04 PM
in reply to: #94562

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Expert
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Subject: RE: Bike Question Re: Chain Ring
I made sure my new bike (Felt F80) had a triple because where I live in Utah, there's a lot of them there mountain thingies.  I need all the help I can get.
2004-12-20 4:11 PM
in reply to: #94572

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Subject: RE: Bike Question Re: Chain Ring
See, I told you! The Bear is on it!
2004-12-20 4:14 PM
in reply to: #94562

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Subject: RE: Bike Question Re: Chain Ring
OK, here's the question: WHY are you "thinking of switching it out for a triple?"


2004-12-20 4:25 PM
in reply to: #94580

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Subject: RE: Bike Question Re: Chain Ring

Worry about running (or riding as the case may be) into a killer hill. At least until I get my endurance and strength up.

Actually, in reality - at this point, any sustained climb at any grade is somewhat of a problem.  Losing another 25-30 lbs. wouldn't hurt, but in the mean time - I hate walking my bike. Haven't had to yet, but have only been on one ride (not real long and it had no step hills, just one fairly long sustained climb) and when I got to the top, I was spent and the HR was upto 177.

I guess, I am just worrying. That's why I am seeking input - wondering if I am worrying about something that over the next couple of months I will condition myself out of - and will have wasted the money to switch out to the triple.

Again, thanks.



Edited by SwmBkRn 2004-12-20 4:29 PM
2004-12-20 4:28 PM
in reply to: #94582

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Subject: RE: Bike Question Re: Chain Ring

How 'bout you ride with what you've got right now and decide later if you need another chain ring?  Personally, I love having a triple, but if I only had a double I'd give it a shot before spending more money.

Happy biking!

2004-12-20 4:39 PM
in reply to: #94584

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Subject: RE: Bike Question Re: Chain Ring
Agree with Whit, give it a chance, build some strength and stamina, at least over the first season. Worst case, you'll have to walk up a hill maybe?
2004-12-20 6:16 PM
in reply to: #94562

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Subject: RE: Bike Question Re: Chain Ring
I can tell you from experience that a Triple chain ring will not work an a bike with a short chainstay such as the Giant TCR Aero. I have tried this myself. The chain alignment was so off, that it was nearly impossible to get it to shift properly up front. The chain was constantly rubbing the derailleur. The chainstay length is 400mm on the TCR bikes. As you may notice the TCR bikes do not come with a triple. However, the more comfort oriented OCR series has a 407mm chain stay. These bikes commonly have a Triple. (I also have an OCR as well. That is how i was able to try the triple on my TCR Aero frame.) Basically, when the chainstay length shortens, the triple setup becomes incompatible because of geometry issues. One more thing, to chainge to a triple, you must change out the Front and rear derailleurs, the bottom bracket, the chain, and the crank arms. And hopefully your shifter is triple compatible. You will have more luck using a compact crankset. Hope this helps!
2004-12-21 8:31 AM
in reply to: #94562

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Champion
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Subject: RE: Bike Question Re: Chain Ring

Treeeeple we don't neeeed no stinkin' treeeeple

I had not even considered the chainline issues with an  compact aero frame. l suppose that's another reason to stick with a double. Seriously, if you find you need lower gears, get a bigger cassette, or even go with a compact double. If you find that you're really really suffering on long climbs, an MTB cassette (11-34) and rear deraileur will give you about the same low gear as a road triple, and for considerably less money, To convert to a triple, you'll have to replace both deraileurs, the crank, the chain, the shifters, and the bottom bracket too probably. It's a pretty expensive fix for a problem that can be best solved by getting in better shape.

Oh, and ride more ;-)



2004-12-21 10:03 AM
in reply to: #94562

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Elite
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Subject: RE: Bike Question Re: Chain Ring
I got a cheapo 1992 Cannondale R300 that is a triple. I use it when I'm going on super hilly rides or when I just want to ride my clunker in the winter with the salt and stuff.

My double is on my race rig.

Perhaps you keep the double on your ride and buy a $300-$400 cheapo R300 with a triple that way you're covered both ways.
2004-12-21 10:29 AM
in reply to: #94562

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Extreme Veteran
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Subject: RE: Bike Question Re: Chain Ring
I ride a Giant TCR-1 (non-aero, size small) and I had a triple put on it with no problems. Not sure what the chainstay length differences are between the aero and non. However, from a cost perspective, I told the guys in the shop when I was buying it that I wanted a triple. Since the bike was new, they just switched out the double for the triple for no charge since they were able to resell the double components at full price.

BTW, since in live in Colorado and ride in the mountains a lot, my triple is PRICELESS to me.
2004-12-21 10:29 AM
in reply to: #94562

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Master
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Subject: RE: Bike Question Re: Chain Ring
Alright, what about going form a triple to a double? My bike came with a triple, I wanted it fast so I didn't want to have them swap then. I do live in the Santa Monica Mountains but still rarely use my small ring. My first 'A' race is in Florida, Pretty darn sure you don't need a triple anywhere in Florida. So if I switch out my Ultegra triple for an Ultegra double what do I need to worry about? I've ridden a little over 1000 miles with the triple and that chain. Do I need to replace the chain as well? Or are my chain and back gears nicely worn together?
2004-12-21 11:05 AM
in reply to: #94806

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Subject: RE: Bike Question Re: Chain Ring

PGoldberger - 2004-12-21 10:29 AM Alright, what about going form a triple to a double? My bike came with a triple, I wanted it fast so I didn't want to have them swap then. I do live in the Santa Monica Mountains but still rarely use my small ring. My first 'A' race is in Florida, Pretty darn sure you don't need a triple anywhere in Florida. So if I switch out my Ultegra triple for an Ultegra double what do I need to worry about? I've ridden a little over 1000 miles with the triple and that chain. Do I need to replace the chain as well? Or are my chain and back gears nicely worn together?

If you already have a triple, I wouldn't go to the trouble of going back to a double. There's nothing wrong with a triple. I just don't think it's worth the trouble and expense to replace one perfectly good crank/deraileur(s)/shifter/bottom bracket (often the single most expensive components) with another for the sake of moving your gear choices around a little. You can get triple-like gears with bigger cassette, and you can put a corncob on a triple

Spend the money on better wheels, or a better hotel at your race, or something nice for your SO.

Ride more

2004-12-21 11:37 AM
in reply to: #94562

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Subject: RE: Bike Question Re: Chain Ring

Thanks, everyone!

I have decided to stick with the double and just "RIDE MORE" to build the strength and endurance.  If it continues to be a problem, or I end up riding were hills become a problem, I will look into either a compact double or different cassette.

- Tim



2004-12-21 12:20 PM
in reply to: #94824

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Master
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Subject: RE: Bike Question Re: Chain Ring
ride_like_u_stole_it - 2004-12-21 8:05 AM

Spend the money on better wheels, or a better hotel at your race, or something nice for your SO.

Ride more

Cool - Looks like better wheels.  SO is on her own!

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General Discussion Triathlon Talk » Bike Question Re: Chain Ring Rss Feed