decision...to get a triple or compact double

[OakLeaf]

Also, with a compact you should be able to go down to a 34 in the small chainring.

This issue has been covered quite a bit here - do a search. In my opinion it comes down to whether you're comfortable pedaling in a wide range of cadences, or whether you prefer closer ratio gearing.

You may be able to get a very wide gear range with a compact, but you'll have large gaps between gears, that at a given speed might force you to pedal at (to pick random numbers) either 82 rpm or 95 with nothing in between. If you're okay with that, then a compact is fine. If you're really only comfortable pedaling in a range of 7-10 rpm, and you need a wider range of gears, then I'd recommend a triple.

[alpinerabbit]

I ride a 50/34 12-27 combo and I conquer major passes in the swiss alps. No problem. go for it.

[Veronica]

I ride a 50/34 12-27 combo and I conquer major passes in the swiss alps. No problem. go for it.

That doesn't mean it's right for her. People really are individuals. You're young and very fit.

I ride a compact double 46/33, with an 11 - 34 in the back. While I have the strength to stay in the 46 on a 5% grade, if I do, my knees start screaming at me after about a mile. I'm slightly older and very fit. I think my knees are few decades older than the rest of me.

Veronica

[Cataboo]

I have a triple & a compact double bike - and a lot of times I just like the compact double more because there's less gears to worry about and I really do a better job of spinning & getting into the right gear on the bike.

There's very seldom times when I'm wishing I had more gears, but I do have a spare set of wheels with a bigger cassette on the back for when I know I'm really going somewhere hilly (as in, I haven't really used it yet)

[alpinerabbit]

That doesn't mean it's right for her. People really are individuals. You're young and very fit.

I ride a compact double 46/33, with an 11 - 34 in the back. While I have the strength to stay in the 46 on a 5% grade, if I do, my knees start screaming at me after about a mile. I'm slightly older and very fit. I think my knees are few decades older than the rest of me.

I hear you - But...

...there really is no big difference to a triple, IM(ns)HO, which I have also ridden. And I wasn't fit when I started cycling... and I wouldn't even try to climb in the big ring... ever....
(hope I don't offend anyone if I say she does live in Texas, and I live in the Alps ... )

[OakLeaf]

I'll say it another way:

On your current bike, do you ever find that you just can't find the right gear? You're either pedaling too fast or too slow? Then a triple is for you, because a compact will potentially give you that problem in almost every gear, where a triple will do it in only maybe one or two.

If not, you're probably fine with a compact.

[Cataboo]

I'll say it another way:

On your current bike, do you ever find that you just can't find the right gear? You're either pedaling too fast or too slow? Then a triple is for you, because a compact will potentially give you that problem in almost every gear, where a triple will do it in only maybe one or two.

If not, you're probably fine with a compact.

I run a compact (50/34) with a 11-25 cassette in the back... and I can't say that I ever have a problem with feeling that I can't find the right gear. I don't have a problem with a 10 speed triple doing that at all either.

Now, I could see if I was running a compact double with an 11-37 or something on it that I'd have that issue with hunting for gears.

I run a 53/42/30 triple with an 8 speed mountain bike rear cassette on my surly and I quite often find that I can't find the right gear on that.

[OakLeaf]

So that's your preference. And if the OP is the same way, then she should be fine with a compact. (But yes, obviously an 8-speed cassette will have wider gear spacing than a 10-speed of the same range, and that's as much a consideration as whether to have two or three up front.)

Myself, with my 50/39/30 x 11-25, I really really notice the absence of an 18-tooth cog on the cassette. The jump from 17 to 19 is just too large for me. If I went to a 50/34 x 11-34, I could have an even broader gear range, but I'd have jumps like that nearly every single gear. It would not work for MY knees or MY leg muscles.

At least with the 10-speed I have a 16; on my old 6-speed (52/42 x 12-21) it was awful having to jump from 15 to 17.

[Pedal Wench]

I hear you - But...

...there really is no big difference to a triple, IM(ns)HO, which I have also ridden. And I wasn't fit when I started cycling... and I wouldn't even try to climb in the big ring... ever....
(hope I don't offend anyone if I say she does live in Texas, and I live in the Alps ... )

Hills are different everywhere. The hills in Colorado are long, but rarely over 7% grade. In the North Georgia mountains, we get 9-10% grades, even sustained 13%. I had no problem climbing the Rockies on a double with a big (13-29) cassette, but for Georgia, prefer a compact. With a 13-29, I get the same gearing as a triple.

[batsheva]

+1 on avoiding Sora - i think that is more important than whether it;s a triple or double-- try and find something with at least Tiagra shifters to allow you to upgrade components later on, imho, if you can find something.

batsheva

[ttaylor508]

My only problem with the compact was missing the higher end gear. I was finding that I was gearing out on downhill sections. This was a big issue with me especially when trying to hang with the boys in group rides since I don't have near the weight they do to fly down those hills. Just something to consider. I currently have a triple with a 52/39/30 and it suits me perfectly for both flat and hilly rides (I am over forty and do not have young knees). I would take both for a really long test ride with varied terrain if possible before you make your decision. I think what it comes down to is what will work best for your riding style. Oh, and +1 on getting 105 or better components!