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Old 02-17-03, 12:37 PM   #1
Scuddie
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sigh... Another newbie

Howdy all! First post in these forums, just thought I'd say hi, as well as ask a few questions about my bike.

I am 21 years old, 6'3, and 330 pounds (not nearly as obese as you'd think). I have a TREK bike, and I have no idea what model it is(got it from a friend), but it's pretty darn big, big enough to be the only bike that fits my frame. Anyway, I was wondering what the deal with weight is. The tires I have are obviously made for a mountain bike... PSI ranges from 40-65, size 26x1.95, and treads measure about 6mm deep. Thing is, I am overcautious about my weight with any kind of tire, except car tires of course . Well, what I am trying to ask is will a tire like that hold a weight like mine without being stressed very much? I know it's not like a 3/4(?) inch tire like Raleigh uses, but it still worries me. I dont know whether I should inflate it to 40PSI, so there wouldnt be as much pressure when my weight is applied, or 60PSI, so that it's not as hard on the tire when I move at higher speeds. The last thing I need is to be cruising around and having a blowout. With that said, whats the deal?

Also, a bit OT, but I cant get into gear 3 major unless I am at 7 minor(the highest), and it will slip into 2 major if I go below 6 minor. Any of you think I need a new gearset/derailer? thanks.

-Scuddie
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Old 02-17-03, 12:46 PM   #2
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At your weight I suggest running a higher tire pressure. if you go lower you will get "pinch flats." This occurs when you hit a bump, the tire compresses and the rim causes two little bite-like holes in the tube (basically the tube gets pinched between the road and the rim).

As for major blowouts... flats on bike tires tend to be slow leakers more than BLOWOUTS. You usually just look down and see that the tire is going soft, pedaling gets difficult, you pull over and change it. Often times I get home, put the bike away, get it out the next day and find that I have a flat.
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Old 02-17-03, 03:16 PM   #3
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will a tire like that hold a weight like mine without being stressed very much?
No, it can't. You should switch to something heavy-duty and higher-pressure, such as a Specialized Nimbus or Hemisphere. Then make sure that you keep them pumped up to at least 75 psig!

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I cant get into gear 3 major unless I am at 7 minor
What are we talking about here? Music? Constellations?

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I am 21 years old, 6'3, and 330 pounds (not nearly as obese as you'd think)
Well, after checking in a book about diet and exercise, you are firmly in the catagory described as morbidly obese, so don't fool yourself. You are obese.
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Old 02-17-03, 03:25 PM   #4
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biking will help youy loose weight so, may in another 6 months you will be lighter by about 60 lbs., so just keep on riding, and your ganna be fit as a raging bull, and by the way welcome to BFC, you made the right choice
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Old 02-17-03, 04:48 PM   #5
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get wider tires and run high pressure. 2.2's or 2.3's.
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Old 02-17-03, 05:44 PM   #6
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Hi Scuddie

Welcome to Bike Forums!!!! Riding is a great way to get and stay fit. There's lots to be learned here....so keep coming back!

WELCOME!!!

Mary Ann
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Old 02-17-03, 09:23 PM   #7
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Quote:
Originally posted by D*Alex
Well, after checking in a book about diet and exercise, you are firmly in the catagory described as morbidly obese, so don't fool yourself. You are obese.
So, did this book also miraculously tell you what a stranger's body fat figure is? I've known some 310+ guys in the 6'3-4" range and not only were they not morbidly obese, they'd grind you into hamburgher for thinking it Muscle weighs a lot more than fat. You get some guy that's been lifting weights, and especially if he's been taking steroids (bad idea), and you can get a 300+ pounder that has so little body fat he can't float!

That said, if Scuddie's weight is mostly fat then he is, indeed, obese but at least he's taking a good first step to change that!

When I was in the military (Air Force) they had a fat boy program for anybody who went over the weights recommended in some book. At 5'10 and 185 I wasn't even close to my limit, but I looked fatter (and was fatter) than another guy on my team who was always getting put on the fat boy program. Trouble was, he lifted weights and was into karate big time. He finally had to go to a specialist in LA (at his own expense) for a body fat measurement to get the fat police off his back.

Now, if you'd stood me next to this guy and asked anybody to pick the healthy guy and the fat guy, they wouldn't have hesitated to say he was strong and healthy and I was overweight -- but the dumb book couldn't tell that!

John
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Old 02-17-03, 10:15 PM   #8
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Hello Scuddie - Welcome to the bike forum. A bit of it is "trial by fire". But certain folks around here have swollen egos and need to be rude to keep themselves pumped up. Sort or like our stupid president.

I think maybe I have deciphered your info. When you talk "major", I assume you mean the gears attached to the pedal arms (crankarms, actually). These are called chainrings and they are the "big, middle and small" chainrings. The gears at the rear wheel are, together, called a cassette. And it sounds as if you have a 7-speed cassette. You probably just need to get the bike into your LBS (local bike shop) to get it adjusted. If you have a good shop, they will let you watch and explain what they are doing. Also, ask them about tires. With your weight, the higher the pressure you can run the better, for all the reasons people have mentioned above. You should get a spare tube and reasonable pump to carry, as well. About $20-25.

If you want to learn more about your bike and do some of the maintenance yourself (which at your weight, you may need) then I recommend you get a copy of Lennard Zinn's "Zinn and the Art of Mountain Bike Maintenance" You can order from Amazon for about $17 and it will tell you all about your bike and how to take care of it. An excellent tome. Will show you how to adjust the gear change so you can reach all gears in any of the chainrings (although, due to high stresses involved in certain positions, you will not want to do). But you can read all about it in Zinn's book.

So pedal away. I don't know if you re looking to lose any weight, but I have dropped 35+ pounds over the last couple of years. Plan to do another 20 this year and then stablize. Good luck and have a great time!
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Old 02-18-03, 07:08 AM   #9
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If you need tyres for riding on the road, then get ones with a minimal tread, not with knobbles. Smoothe tyres roll more efficiciently and are more fun on the road.
With your 3x7 gearing system, you should try and avoid combinations which stress the chain sideways, ie small chainring and small rear cog, or large chainring and large rear cog. There are plenty of duplicate ratios in this system, so there is no need for cross-chain combos. Its hard to asses a gearing problem without inspection, so take it to a good local bike shop.
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Old 02-18-03, 07:37 AM   #10
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Thnx for the welcome, all . Anyway, let me tell you about my weight. I weigh an average of 325 - 330lbs, and mostly is because of my poor physical being. I have, and have always had, Thalasemia(sp?), Overall Dyspraxia, Asthma, and a bunch of other disorders to go along with it. In the past 21 years of my life, my body has made modifications to itself to make myself more stable, at the cost of performance. In short, I have over 100 pounds of thick muscle, that just serves as reinforcement, some of it doesn't do anything at all. It's just there. As of now, I am ~40 excess pounds body fat, and there's not much I can do for the muscle, except surgery . Anyway, I cant put out much power (dyspraxia), and I dont have much endurance (thalasemia), and I have asthma after a while (asthma ). Anyway, since I hate walking, and since I literally cant do much else, I decided bike riding would be the best option for me.

OK, back on topic... I hear that it may be better for a person like me to get a roadbike gearset, and road tires. Question is, how much do you think it would cost me for the smooth tires, a heavy duty tube, and a road gearset? As for the major/minor... lol I forgot what they were called and tried to use a slang term for it. I guess it didnt work too well... (*looks for the :stick: smilie*). Anyway, in your experiences, is Trek a good bike? Just wondering on that one.
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Old 02-18-03, 07:58 AM   #11
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A nice trek would be fine.
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Old 02-18-03, 08:15 AM   #12
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Scuddie,

well I don't know about the dyslexia, thalidium or
hyperwatchucallitmatosis, .
However I can say that Trek is a good brand, well
respected and well made.
There are alot of other good brands that you should
check out also, Giant, Fuji, Felt to name a few.
The thing to remember is that FIT of the bike is
the most important thing, not buying something
just because you recognise the name etc.
there are alot of advice threads in the Road forum
as well as here, check em out.
For the terminology I'd check out
Sheldon Brown's Bicycle Glossary If there's a term in
cycling that isn't in it, I'd be surprized!

good luck and hope you stick around.
Marty
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Old 02-18-03, 08:29 AM   #13
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D-Alex-
Check your all-knowing "book" again.
Now get out your NBA guide-book,
Look up: Jordan, Michael...

Got it,

Good...

Now find his weight & height, now, trace it over to your column that describes everyone in the world, and lo- and behold--- "morbidly obese"

Imagine, the NBA allowing those disgusting morbidly obese folks to play on TV like that... Shameful.
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Old 02-18-03, 10:50 AM   #14
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Quote:
Originally posted by D*Alex



What are we talking about here? Music? Constellations?



Well, after checking in a book about diet and exercise, you are firmly in the catagory described as morbidly obese, so don't fool yourself. You are obese.
Well, now that you are feeling welcomed Scuddie, I'll add mine.

Welcome to the forums.

The major/ minor thing worked for me. Might be that freewheel and chain are a bit worn or a derailler tension problem.

You'll get good advice (mostly) here.
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Old 02-18-03, 04:55 PM   #15
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One piece of advice, don't get discouraged if mt biking sucks on your first few outings. The first time I went mt biking was on technical single track (lots of roots, logs, mud) I was falling off my bike every 15 ft. or so and I thought I was going to die from exhaustion within 15 min. After 3 months of biking I can go 4 hours now before I'm exhausted. I'm still falling off the bike though...
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Old 02-18-03, 05:15 PM   #16
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Quote:
Originally posted by Scuddie
Also, a bit OT, but I cant get into gear 3 major unless I am at 7 minor(the highest), and it will slip into 2 major if I go below 6 minor. Any of you think I need a new gearset/derailer? thanks.
If I understand you right, you're saying that the front gears (cranks) will only stay in the 3rd ring (big one) if you are in the 7th (smallest?) on your rear cassette... right?

you don't need any new parts, just take the bike to a LBS and ask them to adjust the shifting, it probably won't cost any more than $10 and they probably will let you watch.

or if you want to try it yourself... check out these sites.

http://www.parktool.com/repair_help/...railleur.shtml

http://www.parktool.com/repair_help/FAQrindx.shtml

these sites will help also (you can always trust Sheldon Brown )

http://sheldonbrown.com/gears.html

http://sheldonbrown.com/derailer-adjustment.html

by the way, welcome to the forums... and don't get discouraged by the rough welcoming, there are some memebers here whose bark is much more than their bite
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