Originally Posted by Dave Pace .
Maybe, and by that i mean lack of info.
What i did find out was that I did try someone else's bike who has no issue passing me on the flats while they are in the small chain ring. Riding his I found that the small 1 was a good ring to be in to cruse along at and easaly kept up with me. the force I had to exhert was not that hard but i could keep the same speed longer and also at a good cadence (80) on mine to keep it at that speed in the low gear I would have to pump like crazy or get in to the big ring and then keep it at 85 just to keep up. If i went up a gear sure I could keep up and may be pass them but I was down to 75 rpm and the gear was harder to keep going. Really i liked the way the set up felt on that bike unlike mine currently where the small feels just too low
You seem to be tangling up several topics here at once.
- Climbing gears... you started this thread wondering if a compact chainring (50/34) was hurting you on the climbs and if a 53/39 would help your climbing. No, troubles related to gearing on climbs are a matter of the lowest gear you carry and your compact is already giving you a very low gear which is certainly lower than the same cassette paired up with a 39 tooth small chainring. Perhaps that is not low enough for some steep climbs you do, but switching to a larger chainring with the same cassette will not resolve that problem. If you want lower climbing gears then buy a cassette with a larger range such as an 11-28. If your problem is your compact gear in the lowest gear is too low then simply shift up on the climbs. For instance to get a gear close to a 39x23 with your compact gearing shift into the 34x21 or 34x19 (the ideal equivalent cog is a 20 tooth but most of us don't carry a 20 so use the 21 coupled with your compact for a slightly easier gear and the 19 for a slightly harder gear but it's easy to get the equivalent of using a 39 tooth ring and the 23 tooth cog.
- Gears on the flats and going faster... Your 50 tooth big ring on the compact coupled with the 11 tooth cog is a really big gear, it's a bigger gear at nearly 123 gear inches than a 53x12 at 119 gear inches. To give a recent example, Kevin Metcalf recently set a national record in the 40 km time trial rolling a compact crank at less than 49 minutes, that's an average speed over over 30 mph solo from a standing start and including a low speed U turn. From his race report he was mostly turning the 13 and 14 tooth cogs at those speeds. You've got plenty of high end with your 50x11 for most riding unless you regularly get spun out on long tailwind descents.
- Running the big ring when others around you are running the small ring... Yeah, this is a tradeoff with a compact crank. Personally when I run compacts I find I spend about 90% of my time in the big ring (the 50) and reserve the small ring for longer or steeper climbs or really stout headwind sections. The shift between the large and small rings on a compact can be pretty dramatic as well so I tend to be in the big ring a lot and the small ring only when I really need it. But that has very little to do with what chainrings others around me are riding or whether I can stay with them. It doesn't matter if I'm running say my 50x19 and they're running their 39x15 they're both roughly 71 inch gears and for the same cadence the speeds will be nearly the same.
You might want to spend some time with gearing charts like this: http://www.machars.net/bikecalc.htm to see how different gearing combinations break down and how compact geared bikes (50/34) compare to traditional chainring setups (53/39) with different cassettes and what that means in terms of bike speeds at different cadences.
Bottom line, if you're getting passed on the flats or on the hills it is almost certainly a problem with fitness and sustainable power. Simply changing to a different crankset won't change that. If OTOH you prefer to spend more time in your small ring or don't need as much gearing range on the low end as you have with your compact crank then sure you can swap to a traditional 53(or 52) / 39 crankset but there is no magic there and it will not immediately speed you up.
-Dave