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Double Vs. Triple Dilemma? Help :(

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Double Vs. Triple Dilemma? Help :(

Old 04-18-06, 09:05 PM
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Double Vs. Triple Dilemma? Help :(

Ok, Ive put around 600 miles on my older Ultegra Double. That said, Im very comfortable with it. Im thinking its a 170mm. I just purchased a brand New Trek 1500. The Bontrager Triple that comes stock is completely Junk. Ive ridden this bike about 1000 feet. Doesnt shift well, hangs, and Im sure needs riding then an adjustment.

Ive gotten so use to the Smooth Ultegra Double that I have decided to put a new one on the trek. Ok, The Bontrager on the Trek feels way to long on my pedal stroke. Its 170mm also. It also is setup a tad different that my 2005 Specialized Allez.

Should I stick to a 170 length Double for the trek? Will I need a new front derailieur? Is there anything I need to know before buying one. I usually buy new parts only but I do get them off Ebay. Ebay rules! (until I get burned) lol.

Gonna start there. Yes, I am an upgrader. Yes, I need to upgrade my BF%, its way cheaper and I am working on that too.

Thanks for any input.
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Old 04-18-06, 09:12 PM
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That bonty/105 combo should work just as well. You are experiencing cable stretch due to the low miles.
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Old 04-18-06, 09:14 PM
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Originally Posted by C_heath
...I just purchased a brand New Trek 1500. The Bontrager Triple that comes stock is completely Junk. Ive ridden this bike about 1000 feet. Doesnt shift well, hangs, and Im sure needs riding then an adjustment. ...
New bike eh? The store will take care of you for free. I don't have it but the Bontrager Triple I'm sure is perfectly good with the appropriate adjustments.

One one of my bikes a $99 Alivio group(yes everything's about a dollar!) shifts better than most bikes leaving the local shop, yes DuraAce included, from the noise I can hear folks making on test rides in the parking lot But I'm sure they soon get help.
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Old 04-18-06, 09:26 PM
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Well, I didnt point out another factor. Im totally comfortable with the Double now. I could care less about being macho and having to get a double for that reason. However, The ultegras small ring is a 39 where the Bontragers middle ring is a 42. When Im between spinning and mashing (or spinning rather hard) Im usually on the small ultegra ring and my 24 on the rear. Well, When Im on the bonty 42 (middle one on the triple) and the 24 on the rear, its really hard to spin. Im rather having to mash alot more.

So all in all. I dont want to have to use that triple at all unless I cant handle the grade. I like the resistance of the Ultegra 39 when its on the 24 at the back. Does this make sense?

The Bontrager is hard as heck to just spin and save my legs when Im on it and the 24 on the rear. Kinda sucks. Didnt think 3 teeth would matter but it does.

Anyhow, I tried to clear it up, may have confused you all even more.

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I don't like any other exercise or sports, really.
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Old 04-18-06, 10:11 PM
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As for the poor shifting, that can easily be taken care of by going in for a quick visit in the bike shop. Cable stretch and improper adjustment will cause poor shifting, the triple likely has nothing to do with it.
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Old 04-19-06, 12:34 AM
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Change the 42 to a 39.
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Old 04-19-06, 02:03 AM
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Just wait till you encounter some heavy grade .

Last week when I was going up the crater I wish I had my triple . The compact double that came with the R5000 that I rented had the lowest gear a 36/25 and I was mashing for a damn long while.

If you are mashing in 42/24 then why don't you downshift into the small chainring(usually a 30) and ride aorund 30/15???

You have to get used to riding a triple to see it's advantages. I personally love having the extra gears for those "What if" situations.

Just the other day I rode up Winnetka and after I nearly blew up toward the top I downshifted to the small ring and was relieved as I kept going.
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Old 04-19-06, 05:51 AM
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can U switch the 42 to a 39? Keeping the same crank?
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Originally Posted by rousseau
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Old 04-19-06, 05:59 AM
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Originally Posted by C_heath
can U switch the 42 to a 39? Keeping the same crank?
yep
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Old 04-19-06, 06:24 AM
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I guess I don't understand. I spin easily in 42/24 on the flats, for normal flatland riding I'm usually around 42/14-16. In fact unless it's a really steep or really long hill, 42/24 is my climbing gear. I only drop to the 30 for the real steep stuff. What kind of cadence are you trying to achieve in 42/24?

If you were talking about spinning uphill, then my whole statement is moot.
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Old 04-19-06, 06:31 AM
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In Northest NC you definitely have some hills. If spinning 42/24 is difficult, you may well want to have the 30 inner ring available for some of the climbs around you. As for the front shifting, my daughter has a Trek 1500, and I'd agree the front does not shift that smoothly, but I think it's more the derailleur, and/or the brifter that's the cause, not the crank. If you're used to an Ultegra set up, going to 105 is a step down. As for the Bontrager crank feeling too long on the pedal stroke, this doesn't make much sense given the same length of crank. I think that feeling may be the result of some other fit issue not the crank, or it's in your head.
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Old 04-19-06, 06:35 AM
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Your triple is not set up properly. But even if your triple is set up perfectly it will not shift as well as an equally well set up double. If you like the double then get it. If the cranks are both 170mm then the reason why the other one feels long most likely is saddle height i'd guess.
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