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  1. #1
    Mr. Frowny Man Alathea's Avatar
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    Thinking of Sport Conti slicks but...

    Is rolling resistance REALLY an issue if you are a clyde? I mean, we are already pushing weight around, is a few ounces of tire weight going to make that much of a difference? Am I missing the point of 'rolling resistance'?
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  2. #2
    The Site Administrator: Currently at home recovering from a couple of strokes,please contact my assistnt admins for forum issues Tom Stormcrowe's Avatar
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    Depends on your focus, really.

    If you race, then rotational mass and rolling resistance is going to make a huge difference, or if you are riding ultradistance (Century +). Otherwise, it's more or less a wash. Properly inflated, there isn't a huge amount of difference in wide vs narrow tires, in the long run. Different job, different wrench.

    Quote Originally Posted by Alathea View Post
    Is rolling resistance REALLY an issue if you are a clyde? I mean, we are already pushing weight around, is a few ounces of tire weight going to make that much of a difference? Am I missing the point of 'rolling resistance'?
    on light duty due to illness; please contact my assistants for forum issues. They are Siu Blue Wind, or CbadRider or the other 3 star folk. I am currently at home recovering from a couple of strokes. I am making good progress, happily.


    . “He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you.”- Fredrick Nietzsche

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  3. #3
    Mr. Frowny Man Alathea's Avatar
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    Just a city commute, paved. I see a lot in here about tires and whatnot. Even the pre-wrenched commuters (Giant TranSport, Kona 2-9) come pre-spec'd with semis or slicks. I got my ride from CL with knobbies on it-just wondered what the fuss was about, really.
    The Earth is degenerating these days. Bribery and corruption abound.
    Children no longer mind their parents, every man wants to write a book,
    and it is evident that the end of the world is fast approaching.
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  4. #4
    Banned. Mr. Beanz's Avatar
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    Oh heck yeah! Slick are great and much faster on an MTB type compared to the knobbers! I put them on a beater I had and it made a big difference. I remember running into a group of club riders while riding the beater with slicks. They were shocked that I kept up with the fancy roadies. Don't think that would have happened with knobbers.

    The knobs I've had are from 35 -60 psi. The slick were 80 psi. Makes a big difference! But my tires were Specialized Nimbus slicks 1.5's.

    I sold the lil beater bike to a friend but kept the slicks. What does that tell ya?

  5. #5
    The Site Administrator: Currently at home recovering from a couple of strokes,please contact my assistnt admins for forum issues Tom Stormcrowe's Avatar
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    OK, knobbies vs slicks: There is a significant difference there. Knobbies aren't as stable on pavement, they can slip out from under you and the friction from the knobs make for a large increase in rolling resistance.
    on light duty due to illness; please contact my assistants for forum issues. They are Siu Blue Wind, or CbadRider or the other 3 star folk. I am currently at home recovering from a couple of strokes. I am making good progress, happily.


    . “He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you.”- Fredrick Nietzsche

    "We can judge the heart of a man by his treatment of animals." - Immanuel Kant

  6. #6
    Banned. Mr. Beanz's Avatar
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    Quote Originally Posted by Tom Stormcrowe View Post
    OK, knobbies vs slicks: There is a significant difference there. Knobbies aren't as stable on pavement, they can slip out from under you and the friction from the knobs make for a large increase in rolling resistance.

    Plus Knobs aren't meant for pavement. I rode mine on a 40 mile ride only to notice 50% of the rubber was missing at the end of the ride!......They are meant for the dirt so I ride mine on pavement as little as possible.

  7. #7
    Mr. Frowny Man Alathea's Avatar
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    Okay. Physics! Makes some sense now. Is there any tried/true AND relatively inexpensive semis/slicks out there that actually live up to the marketing, e.g. conti's and their SafteySystem on their hybrid tire? Do they make foldable bead slicks, or are they pretty much wirebead?
    The Earth is degenerating these days. Bribery and corruption abound.
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  8. #8
    The Site Administrator: Currently at home recovering from a couple of strokes,please contact my assistnt admins for forum issues Tom Stormcrowe's Avatar
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    They make both. Conti's are good, or Geax Evolutions are good. Geax are a bit heavy at 880 grams a tire, but are nearly as strong as unobtanium.

    Geax Evolution


    The raised center strip makes them roll like a road tire and the block tread makes them good on multiple surfaces, without sacrificing the stability of slicks on pavement. I've done a few tours on these on a converted mountain bike and was really impressed with the distinct lack of flats, even in thorn country.

    They also have the distinct advantage of doing well offroad in all conditions besides mod.
    on light duty due to illness; please contact my assistants for forum issues. They are Siu Blue Wind, or CbadRider or the other 3 star folk. I am currently at home recovering from a couple of strokes. I am making good progress, happily.


    . “He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you.”- Fredrick Nietzsche

    "We can judge the heart of a man by his treatment of animals." - Immanuel Kant

  9. #9
    Banned. Mr. Beanz's Avatar
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    I use wire beads on just about everything. I've tried folding on my roadies and don't feel a dog dern difference in rotaional weight and all that blah blah! Some don't use the plastic caps on the valve stems, 2 less spokes and all that silliness cause they say it's to much weight. It's more about the rider than the silliness.

    I had a bigtime forum member raz me on the forums as we were both signed up to do a 10,000 ft TIMED century. He had an $8,000 superlite with climbing wheels, climbing gear setup, less the valve caps and $75 tires. I used my same ol $20 Conti's on my $1000 bike,self made wheels, and hard training. He started an hour before me but I passed him and finished ahead of him.

    On the last climb, I stopped let him pass, talked and kissed my wife some while he rode by. Then I got back on bike and passed him again for the fun of it! Evil thing to do but I made sure he never razzed me on the forums again!..He can have the superlite weightweenie stuff!

    Just get a set of slicks, you'll be fine! If not, ride more!

  10. #10
    Mr. Frowny Man Alathea's Avatar
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    Oh. Wasn't worried about wires for weight, just for carrying one around, or if there was any difference in sidewall strength or puncture resistance between the two, thats all. thanks for the suggestions!
    The Earth is degenerating these days. Bribery and corruption abound.
    Children no longer mind their parents, every man wants to write a book,
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    --Assyrian Stone Tablet, c.2800 BCE

  11. #11
    Senior Member Wogster's Avatar
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    Quote Originally Posted by Alathea View Post
    Just a city commute, paved. I see a lot in here about tires and whatnot. Even the pre-wrenched commuters (Giant TranSport, Kona 2-9) come pre-spec'd with semis or slicks. I got my ride from CL with knobbies on it-just wondered what the fuss was about, really.
    On low pressure knobby tires are designed for mobile surface conditions, like sand, mud and snow, where you need the tire, to dig the knobs into the surface. On pavement, the surface is actually solid and rough, so the surface actually digs into the tire, the more rubber that touches the surface, the better the grip.

    Rolling resistance isn't at the surface, it's in the deflection of the sidewalls, you know where the tire flattens out at the bottom, which means the more pressure, the less deflection and the less actual rolling resistance. However the stiffness of the tire sidewall is also a factor. Now this isn't all to take into account, the higher the pressure, the harsher the ride, especially on a stiff Aluminum mountain bike frame. So you want to balance out between efficiency and comfort. I have 2800 km on a set of Richey Tom Slick tires, and they don't look any more worn then they did after 100km, only had 1 flat, at 1.4" wide they are a good mid-width, max pressure is 85PSI, at $15 each, they seem pretty good, although if you get a lot of puncture vine, or other road thorns, you might want a different tire. Wife's bike has 1.,5" Kenda Kwest (I think) on it, we paid $12 each for those, but they only have about 40km on them, so not sure yet of how good they will be.

    One rule I stick too, is when putting on a new tire, put in a new tube, the old ones can be kept as spares, although often going from fat knobby tires to narrower slick tires, you may need different tubes anyway. I do this, to reduce the chances of damaging a new tire, when an old tube decides it's had enough. This rule extends to rims as well, a new rim would get a new tire and tube.

  12. #12
    Mr. Frowny Man Alathea's Avatar
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    Different tubes...hmmmm...I didnt think of that. Ive got standard 26 inch MTB rims on there now-is a standard 2.75 inch tube not right for a slick? shoot-will I need different rims? (hoping not) More questions! Arrrgghhh...!
    The Earth is degenerating these days. Bribery and corruption abound.
    Children no longer mind their parents, every man wants to write a book,
    and it is evident that the end of the world is fast approaching.
    --Assyrian Stone Tablet, c.2800 BCE

  13. #13
    DRF aka Thrifty Bill wrk101's Avatar
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    No that tube is not correct for the slicks, depending on the width of the slicks of course. I have 26 x 1.25 slicks I got on sale at Nashbar, with a 26 x 1-1.5 tube, or something like that.

  14. #14
    Senior Member gforeman's Avatar
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    On my Gary Fisher Mtb, I changed the stock knobby tires for some Kenda tires that were more street in the middle. Last week I changed them to Armidilo street tires, and went from 26x1.95 to 26x1.50.

    God what a difference it made! If you are riding on the street, this is the way to go. These tires take 80 PSI also.
    Gary F.


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  15. #15
    Chubby super biker bdinger's Avatar
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    I went from knobbies to Nimbus Armadillos on my Hardrock earlier in the year, and all I have to say is WOW. It turned from being somewhat lethargic and slow on pavement, into a rocketship urban destructo-bike. They were not anything resembling cheap, but worth every penny.

  16. #16
    Mr. Frowny Man Alathea's Avatar
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    Ill look into those. Is there anything Ill want to take into consideration regarding tube size, or am I okay as Long as I fall into the range on the sidewall of the tire I pick?
    The Earth is degenerating these days. Bribery and corruption abound.
    Children no longer mind their parents, every man wants to write a book,
    and it is evident that the end of the world is fast approaching.
    --Assyrian Stone Tablet, c.2800 BCE

  17. #17
    Senior Member gforeman's Avatar
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    I replaced with the correct tube size. Total cost at my LBS for tires, mounting, new tubes was $97. Worth every Penny!

    Here's a YouTube videl on the tires:

    http://www.youtube.com/watch?v=sKCSGbWbPyE
    Last edited by gforeman; 07-13-08 at 02:33 PM.
    Gary F.


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  18. #18
    Mr. Frowny Man Alathea's Avatar
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    Some of what ive read today about Armadillos says they have a harsh ride and ive seen Conti Gatorskins and Geax suggested for almost the same reliability. "Harsh ride" is kind of a relative term, isn't it? (what is harsh to you I might not notice, etc) Is this like 'rolling resistance', one of those things that isn't really that noticeable?
    The Earth is degenerating these days. Bribery and corruption abound.
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  19. #19
    Chubby super biker bdinger's Avatar
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    I heard the same thing, but honestly I think it's all relative. I mean, on a road bike it's easy to tell, but on a MTB much harder to tell. I did hear, though, that the regular (non-armadillo) Nimbus is a great tire that's a little "cushier". I also hear REALLY good things about Gatorskins, in fact I'm planning on putting 700x28 Gators on the LHT next year for the "summer tires", with winter tires being 700x35 Schwalbe Marathon Cross.

    Speaking of Schwalbe, I hear endless good things about them. They are definitely another name to check out, but be warned, they are a tad pricey. Either Monkey Wrench Cycles downtown or Cycle Works can order them in. Bike Rack, yeah, they're pretty much Continental/Bontrager, and really overpriced. I hate to bash a shop, but they've been rubbing me the wrong way since they went from Blue's to Bike Rack. I think it's a management thing, too bad really, I like several of the employees.

    Anyway, choose what best fits your budget. Heck, if you'd like to test-ride my Hardrock with the Nimbus 'dillos, you are welcome to.

  20. #20
    Mr. Frowny Man Alathea's Avatar
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    [OT]I pointed out your P/U truck last night on the way to my SIL's birthday bash to my wife-you really ARE close. I might commission some of your time some day in the finer points of derailleur adjustment. My wife has a Huffy special that drags gears and, while in pristine shape for a garage sale freebie, is certainly isn't mine. [/OT]

    Ive read about 'dillos in the past and heard good things. I was going to ask about the 'local' shop (BikeRack) as its the only one in town i've been to recently, but you sort of covered that one already. Monkey Wrench is Awesome-I love that shop. When I lived on 12th and F and worked downtown I would go down there and drool and play with the dog. They sold my first 'back room' bike, a Cannonodale 3.0 frame they had hacked up with a rack and some basic pedals, for a hair over 200. Great ride, but I discovered that the frame was too big for me with experience. Sold it so someone a little bigger and they got a nice ride, even if just for the frame.
    The Earth is degenerating these days. Bribery and corruption abound.
    Children no longer mind their parents, every man wants to write a book,
    and it is evident that the end of the world is fast approaching.
    --Assyrian Stone Tablet, c.2800 BCE

  21. #21
    Banned. Mr. Beanz's Avatar
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    Quote Originally Posted by Alathea View Post
    Oh. Wasn't worried about wires for weight, just for carrying one around, or if there was any difference in sidewall strength or puncture resistance between the two, thats all. thanks for the suggestions!

    Hmmm, then why go thru all the blah blah stuff? Just buy a folding tire to carry as a spare. Plus the OP mentions rolling resistance and tire weight.

    How does one get the hint you are asking about sidewall strength and puncture resistance in the OP?

  22. #22
    Mr. Frowny Man Alathea's Avatar
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    It evolved from the first question to the second.

    Quote Originally Posted by Mr. Beanz View Post
    Hmmm, then why go thru all the blah blah stuff? Just buy a folding tire to carry as a spare. Plus the OP mentions rolling resistance and tire weight.

    How does one get the hint you are asking about sidewall strength and puncture resistance in the OP?
    The Earth is degenerating these days. Bribery and corruption abound.
    Children no longer mind their parents, every man wants to write a book,
    and it is evident that the end of the world is fast approaching.
    --Assyrian Stone Tablet, c.2800 BCE

  23. #23
    Senior Member gforeman's Avatar
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    Quote Originally Posted by Alathea View Post
    Some of what ive read today about Armadillos says they have a harsh ride and ive seen Conti Gatorskins and Geax suggested for almost the same reliability. "Harsh ride" is kind of a relative term, isn't it? (what is harsh to you I might not notice, etc) Is this like 'rolling resistance', one of those things that isn't really that noticeable?
    Harsh? Well, I have a road bike. These fell soft compared to them, so I'm not sure what you consider harsh.

    These are still the best tire I have had on the bike so far. I did 36 miles on a ride today, and I'm sure glad I got them on before my trip.
    Gary F.


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  24. #24
    Mr. Frowny Man Alathea's Avatar
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    I don't quite know what harsh is, I suppose-just getting opinions. Ill have to justify a tire purchase to my other half, and my current tires are really almost new! *lol*
    The Earth is degenerating these days. Bribery and corruption abound.
    Children no longer mind their parents, every man wants to write a book,
    and it is evident that the end of the world is fast approaching.
    --Assyrian Stone Tablet, c.2800 BCE

  25. #25
    Senior Member gforeman's Avatar
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    My original tires were on there for one week. The Kenda's had a lot of life in them too. I've wasted more money on less important things before
    Gary F.


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