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Click to view akblanch8's profile Amateur 10 posts since
May 30, 2008

May 30, 2008 3:12 PM

Size 53 chain ring....


Hi,

I have a question, my bike came with a size 53 chain ring on it for my big gear, and I got this bike from a friend well kind of. But anyway I was told not to ride in that gear beacuse I could hurt my knees.... is this true? When I took it out for a ride I tryed it out and it didnt feel too bad, but from what I was told only "big guys" should be riding in that size chain ring, and I am neither big or a guy...so I was just wondering if its really bad for me to have that size on my bike?

Thanks!

akb

Click to view JimKaufman's profile Rookie 1 posts since
Apr 6, 2008
1. May 30, 2008 9:04 PM in response to: akblanch8
Re: Size 53 chain ring....
Your friend is incorrect. You should be able to use all your gears, it just depends on the conditions and what cog you're in, in the rear. While I certainly wouldn't attempt to climb a hill with the 53 front and a small cog in the rear, that combination would be totally appropriate pedaling down a hill. Pick a combination of gears that gives you a comfortable cadence for your style of riding. If you weren't supposed to use it it wouldn't be there!
Click to view MotiveForcer's profile Pro 168 posts since
Jul 9, 2007
2. Jun 16, 2008 9:31 PM in response to: akblanch8
Re: Size 53 chain ring....

Hi AKB 8

Jim is correct. Your cohort, as you quoted, is not but we can consider what he may have been alluding to. If you are in a big tooth gear in the front and a small tooth gear in the rear you will ride at a slower cadence than if you are in an "easier gear" such as a "39" in the front and a 25 in the back. Generally speaking, I advise all riders, new or not, to try to learn to pedal at a higher cadence. That means an easier gear ratio. Many runners who take up the sport are strong from their running but tend to push too hard a gear because of the leg strength that they've gained from their running history. The fact is correct that by forcing too hard a gear they may hurt their knees or specifically their tendons. In the Springtime, experienced riders make an extra effort to re-find their cycling legs and pedal at a higher cadence. A slow cadence tends to emphasize the quads pushing down on the pedal. An efficient pedaling stroke is a more complete stroke that includes pushing the pedal across the top by, in effect, rolling the heal down a bit at the start of the stroke and getting the pedal over the top and emphasizing the calf muscles too. This is particularly useful when on a gradual slope that leads to a long climb. If you use your quads in the approach to the hill then they will fatigue sooner than if you've been using your calves and, in effect, saving your quads till you really need them.

I've been particularly aware of triathletes who come from a running background who push too hard a gear. They are using their running legs to pedal. So, what is going to be left to them when they get off the bike and have to now run a marathon to finish that IRONMAN race? If you watch a pro race you will note that the racers are generally stroking at a cadence most recreational riders, including good club racers can't touch. They are able to maximize their efficiency by putting energy through the maximum portion of the stroke. I've referred to the over the top portion of the stroke as 10 to 2. On the right pedal think about accentuating the stroke from the 10 o'clock position to the 2 o'clock position. I will specifically focus on this on terrain that rolls upward slightly and I'll avoid an easier shift to try to maximize the power over the top. Your quads will naturally do the rest,

Three teeth of a gear in the front is about equal to one gear tooth in the rear. You probably have a 39 smaller ring in the front unless you have a triple up there. So, shifting to the smaller tooth gear in the front is probably four gears, at least, different in the back, depending on the cassette set up. If you shift to the easier ring in the front, you may find that you'll have to shift to a slightly harder gear or two in the rear to find the right cadence. The bottom line is that you should try to spin faster. Faster than what is comfortable if you want to improve, but faster is a longer lever in effect and if you have a long enough lever you can move the world!

Try to avoid the dreaded cross over! This is when you are in a small gear in the front and the smallest gear in the rear and the reverse, which would be the biggest gear in the front and the biggest gear in the rear. Here I am writing of the size of the gear itself and not how hard or easy it is. If you look at the chain from the back of the bike to the front, if the chain is in the two biggest by size gears, the big front, your 53 in this case and the big tooth gear in the rear, probably a 25 I'd bet, the chain, you may notice is on an angle. If you shift to a more centered ring the chain is in effect straighter from a side to side vantage. It will wear longer if you don't cross over. Most riders will say you can go to the second from the extreme but if you can avoid the most extreme crossover position. Cassettes come in different sizes and this leads to another discussion that differnt riders have differnt takes on or different habits but keep your drive chan clean and pedal with a comfortable but "faster" cadence and you will feel stronger and faster at the end of the ride.

EJ

Click to view mstrang's profile Amateur 19 posts since
Jun 23, 2008
3. Jul 31, 2008 6:23 AM in response to: MotiveForcer
Re: Size 53 chain ring....

Im fairly new also but I too have found that the higher cadence helps greatly with endurance as well climbing ability. When i first started riding I would "mash" my way through everything and was damaging my bike. I talked and to some people in the know and the higher cadence straightend me right out.
Click to view MotiveForcer's profile Pro 168 posts since
Jul 9, 2007
4. Jul 31, 2008 9:27 AM in response to: mstrang
Re: Size 53 chain ring....

Last evening on one of our local "recovery" rides I rode with a fellow who gave me the best advice I've ever had while riding though it was over 10 years ago but I reminded him of it and thanked him once again. In a circuit race on an auto race course which was not an oval and had a nice hill in it, about 1 1/3 miles per lap, they rang the bell for a "prime" (pronounced Preem). When we got to the hill I jumped and got a huge lead on the pack and I thought to myself, "If Danny doesn't come after me I'll get my first prime." Sure enough though he did come after me and I knew full well that there was no way I'd be able to outsprint him for the mid race prize but I asked him if he wanted to try to hold onto a two man break. He said that it was too early in the race. We eased up a bit and the field caught us and we sat in. As it happens it is almost always windy out there and that day muggy too. I got gassed and was happy to just fininsh with the pack, the back of it even.

After the race, which Danny won, he came up to me and said, "You know E.J., you are pushing way to hard a gear." I was a little surprised and said, "really?" Dan said he thought I was way too strong to not finish better than I did. The next week I stayed in my smaller front chain ring even on downhills. I got dropped a couple of times on our rides but would eventually recatch. After a week of this my pedaling stroke was greatly improved and my racing season was completed with better results and top 5 finishes. The trick is to save your power for when you need it. Spin and spin and power at the end. If you watched the tour de France you will note that the sprinters aren't pushing the monster gears that you and I can't even dream about until those final hundreds of meters after spinning as best as they can for the first hundred miles or so!

SPIN!

EJ