mud 10-13-2011 09:09 AM

Quote:
 Originally Posted by Meathead (Post 17066483) the banged up one is still noticeably shorter than the good one. Anyone?
I don't now anything on the fitness side.

BUT, with one leg shorter than the other, pay VERY close attention to how your body is reacting to the ride, not just your leg. I know people that have un-noticable differences (figured it out with x-rays and measurements) in their legs and it has caused them back/hip problems.

The fix is easy. just get a shorter/adjustable crankarm for that leg side to find a happy medium.

Just something to watch for.

Until/If then, enjoy the ride!

 zippy 10-13-2011 09:32 AM

Quote:
 Originally Posted by Meathead (Post 17066483) How pathetic is a 13.1 mile ride at 13.3 mph average? There's just shy of a mile of gravel road in there, but it couldn't have affected the average much at all.
do not pay too much attention to distance and speed. That will come with time. Just pedal for fun and therapy. Heal fast big man.

 Jim Moore 10-13-2011 09:37 AM

Thanks Mr head. that's exactly what I was looking for. From my calculations it looks like you drop from 20 mph to about 17 mph riding into a 5 mph headwind. that's more of a drop than I expected but it explains why I suck so bad in the wind. Can someone check my math?

Power requiredThere is a well known equation that gives the power required to push a bike/rider through the air and to overcome the friction of the drive train:

P=gmVg (.0053) + VgVaVa(.185)

Where P is in watts, g is Earth's gravity, Vg is ground speed (m/s), m is bike/rider mass in kg, s is the grade (m/m), and Va is the rider's speed through the air (m/s). K1 is a lumped constant for all frictional losses (tires, bearings, chain), and is generally reported with a value of 0.0053. K2 is a lumped constant for aerodynamic drag and is generally reported with a value of 0.185 kg/m.

I used 82kg and (1 mph = 0.45 m/s).

 Dranrab Luap 10-13-2011 10:46 AM

Quote:
 Originally Posted by Meathead (Post 17066483) It was October 24 last year, so yeah, almost exactly a year ago. There's a thread about it here - gets interesting around post #429. I went through a month of that bs to stretch my femur back out, but I'm certain now that something got f'ed when they pulled that contraption off my leg - the banged up one is still noticeably shorter than the good one. Unfortunately, I don't have a window of opportunity to be laid up right now, like I did earlier this year when that thing was on. I'm probably just gonna have to live with it as is for a year or so. Luckily, while I'm on the new bike, there's no indication whatsoever that I've got that problem. The leg's still considerably weaker than the other, but there's no pain at all. I think I'd be having fun anyway, but because of that, I'm really enjoying this pedaling bit - it's a kind of escape from the constant reminder of what that douchebag did to me. Sooo, on that bicycling note, I went for a ride right at daylight this morning on the Silver Comet Trail. I didn't go quite as far as I did on Monday, 'cause I had to get back and get some things done. How pathetic is a 13.1 mile ride at 13.3 mph average? There's just shy of a mile of gravel road in there, but it couldn't have affected the average much at all. My leg's still too weak to stand in the pedals, so I have to stay in the seat and crank away. I'm sure I'll improve a good bit over the next couple months, but until I can stand in the pedals to power up a grade, I'm sure there's a threshold there somewhere that I'll never break. For what it's worth, I'm really not concerned about the speed or the distance. I kept the cadence between 60 and 70 for the entire ride, and my heart rate stayed above 140, below 170 ('cept for a brief "sprint" at the finish - still below 180). One of you fitness gurus tell me what'cha think about that, please..? Is that a good pace? It felt like all I could do without getting behind the curve. Anyone?
Mark, I am not a fitness guru and I think it's going to be hard to compare what you are doing now vs some ideal. Generally those HR numbers look pretty good. You'll eventually want to work toward a cadence that's more in the 85-90 range.

I am glad you are progressing and that you are focused on getting well. Best wishes bro.

 Gummee! 10-13-2011 02:00 PM

Quote:
 Originally Posted by Dranrab Luap (Post 17067361) Mark, I am not a fitness guru and I think it's going to be hard to compare what you are doing now vs some ideal. Generally those HR numbers look pretty good. You'll eventually want to work toward a cadence that's more in the 85-90 range. I am glad you are progressing and that you are focused on getting well. Best wishes bro.
Spinning faster = works you aerobic system more
Spinning slower = works your muscular system more.

Everybody has a 'right' cadence for them. MH, I think you should spin a little faster too.

Paul's right: ride for funsies. If/when you get serious, you're going to need to go to a fitting specialist that has experience with leg-length discrepancies. :nod You could just need something as easy as a few shims or as complicated as different length crankarms AND shims. :nod

Your feet are turning LOTS of circles in an hour of riding. Eventually if things aren't right, there WILL be issues.

As for me: I just got in from an easy hour. I'm on an off week. No racing this weekend in DEL either. Hang out, wrench on bikes, drink beer. :thumb

Most of my ride was dry. Brought the Gore Tex jacket anyway. Sure nuff :nod last 15min were sprinkly then rainy.

:ricky

Right now its coming down in buckets. Glad I got in before it decided to dump again!

M

 ducnut 10-13-2011 06:22 PM

Quote:
 Originally Posted by Meathead (Post 17066483) How pathetic is a 13.1 mile ride at 13.3 mph average?
Hey, I'm that guy! :ken

I'm done with the whole speed thing and just ride, now. BTW, the Silver Comet Trail, in its entirety, is on my bucket list.

 Gummee! 10-14-2011 06:06 AM

Quote:
 Originally Posted by ducnut (Post 17070767) Hey, I'm that guy! :ken I'm done with the whole speed thing and just ride, now. BTW, the Silver Comet Trail, in its entirety, is on my bucket list.
I'm not done with speed and I'm still that guy. :nod

All depends on what day it is and what I'm supposed to be doing. I'm perfectly happy to toodle along smelling the roses. It usually means a recovery ride, LSD, or I'm getting ready to go really hard for short periods of time.

Common misconception is that riding has to be hard all the time. Ain't so. :nono

M

 ducnut 10-14-2011 06:17 AM

Quote:
 Originally Posted by Gummee! (Post 17073389) I'm not done with speed and I'm still that guy. :nod All depends on what day it is and what I'm supposed to be doing. I'm perfectly happy to toodle along smelling the roses. It usually means a recovery ride, LSD, or I'm getting ready to go really hard for short periods of time. Common misconception is that riding has to be hard all the time. Ain't so. :nono M
When I was doing the TT thing, every ride was pushing. I got to where it was no longer enjoyable to get on the bike. I switched gears and am really enjoying the longer stuff.

OK, from my experiences with knee re-hab, spinning and coaching...

Spinning does a couple of things, first and most important it lowers the stress into the knee joint. This is a good thing when said joint has been battered, twisted and shoved off it's moorings by fat guys, or really steep ski slopes and ice.
I've managed a few of those mistakes in my past. spinning brought the knee back.
The other very important thing spinning does is replicate thousands of mini leg extensions that serve to strengthen that little handful of a muscle on the inside upper knee at the end of the femur. That little muscle is what keeps the knee cap tracking right when that big assed quad on the outside of the leg tries to pull it up to your hip.
When the big muscle wins the scar tissue built up on the back of your patella tries to gouge it's way across the end of the femur. Or sort of jumps the tracks. This it turns out hurts like hell. There is nothing I've found short of a half bottle of whisky or big needle full of morphine that can dull the pain.
Vicodin ES only gets close if it is a large dose like two pills washed down with a big glass of whisky. That is comes close to knocking me at least out enough I can sleep for about 3 hours until the whisky has worked itself out and the pills begin to wear thin.

Now one of the benefits of spinning is your body becomes used to a new frequency. This means that as you edge up to taller and taller gears all the while keeping the spin going you gain speed.
The big muscle on the outside of the leg isn't allowed to lord it over on the little muscle at the knee so you get balance and strength.
Add some climbs or sustained effort on the flats like a time trial and you build more on the aerobic side.

Back-In-The-Day, we used to ride our first thousand miles with a fixed gear. Something like a 39x16 or so. That forced the spin at least on downhills, and forced you to stand on uphills taking some strain off the knee there too. The idea was to gear yourself so you weren't plodding along, but spinning. The old guys would call this squaring out the spin.

The old guys were fast. They were the same age as me, but I had not begin racign bicycles until my late thirties. They had begun as teens.

Penn State I believe did some studies on efficiency and found that 90 to 120 rpm was the sweet spot. above 120 was usually too fast for too many to sustain for very long.

With my bad knees I spin to allow me to ride at all. The speed comes with miles and hours of riding. I add standing on hills to work the back of my legs, sort of a stairmaster for those of us who hate the gym.
Hills are where I can push my heart rate to the maximum. My legs are not strong enough yet to sustain a big gear on the flats to push my heart rate up for long. My legs give up before my lungs or heart hits redline on the flats.

 ducnut 10-14-2011 05:22 PM

OK, then. :lol3

 TheYeti 10-14-2011 08:30 PM

Quote:
 Originally Posted by ducnut (Post 17077866) OK, then. :lol3 http://www.youtube.com/watch?v=I-_pA...yer_embedded#!
On my Surly's chainstays it says fatties fit fine. Hell I thought they refering to me when I first got the bike.:rofl:lol3:D

 2whl-hoop 10-15-2011 06:50 AM

Quote:
 Originally Posted by ducnut (Post 17077866) OK, then. :lol3 http://www.youtube.com/watch?v=I-_pA...yer_embedded#!

I rode a Pugsley around the LBS parking lot a week ago. I was surprised at how nicely it rode. I'm seriously considering a Pugs or a Mukluk as a winter/summer playbike (no backflips, though). :D

 TheNedster 10-15-2011 03:34 PM

So, the recent rains here may have settled the dust and made the dirt nice and tacky, but they also washed a bunch of the loose stuff away and exposed all manner of sharp, pointy rocks. A run-in with one such rock last weekend resulted in a catastrophic failure of my rear tire, a short hike to the trailhead and a SAG call to TheWifester. (note to self: carry an emergency tire boot :baldy)

http://i800.photobucket.com/albums/y.../WP_000539.jpg

I was out of town working all week, so I wasn't able to get to the LBS until this morning to get a replacement tire. I ended up getting a pair. They threw in the bike that they were attached to for a few bucks more...

http://i800.photobucket.com/albums/y.../WP_000547.jpg

New Bike Day kicks ass!!! :ricky :wings

 ducnut 10-15-2011 04:14 PM

Quote:
 Originally Posted by TheNedster (Post 17082873) I was out of town working all week, so I wasn't able to get to the LBS until this morning to get a replacement tire. I ended up getting a pair. They threw in the bike that they were attached to for a few bucks more... http://i800.photobucket.com/albums/y.../WP_000547.jpg New Bike Day kicks ass!!! :ricky :wings
That's happened to me twice. Left with a TT bike for my GF the first time and a MTB for me the second.

Nice bike, BTW. :thumb

 mud 10-15-2011 04:28 PM

Quote:
 Originally Posted by TheNedster (Post 17082873) So, the recent rains here may have settled the dust and made the dirt nice and tacky, but they also washed a bunch of the loose stuff away and exposed all manner of sharp, pointy rocks. A run-in with one such rock last weekend resulted in a catastrophic failure of my rear tire, a short hike to the trailhead and a SAG call to TheWifester. (note to self: carry an emergency tire boot :baldy) http://i800.photobucket.com/albums/y.../WP_000539.jpg I was out of town working all week, so I wasn't able to get to the LBS until this morning to get a replacement tire. I ended up getting a pair. They threw in the bike that they were attached to for a few bucks more... Nice bike! http://i800.photobucket.com/albums/y.../WP_000547.jpg New Bike Day kicks ass!!! :ricky :wings
Duct tape works wonders, just line the inside of the tire with it. Not that it would have worked for that tear, but it might have been enough to get you home.... It is actually about the ONLY thing I use duct tape for.

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