New hybrid or new mountain bike?
04-08-12, 11:16 AM
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New hybrid or new mountain bike?
The 8.4 DS seems like it'll be a good town bike for riding the busted sidewalks and going off in the grass and dirt on occasion. I thought it would be nice if it would serve as a secondary mountain bike in case I wanted to go ride with a friend that didn't have a bike. But that may be expecting too much.
Another option I considered is putting some thinner tires on my Cobia and then just buying a new mountain bike, such as an X-Cal or Superfly AL. That would be more expensive though. And I'm not sure a Cobia with thinner tires would be quite as fast on pavement as the 8.4 DS.
Opinions?
Another option I considered is putting some thinner tires on my Cobia and then just buying a new mountain bike, such as an X-Cal or Superfly AL. That would be more expensive though. And I'm not sure a Cobia with thinner tires would be quite as fast on pavement as the 8.4 DS.
Opinions?
04-08-12, 02:22 PM
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By 'thinner tires', do you mean narrower? Or less aggressive tread pattern? I've got 26x1.5" tires that are on the slickish side and can hit speeds of 20+ mph on the flats under ideal conditions.
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04-08-12, 02:40 PM
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Originally Posted by no1mad
By 'thinner tires', do you mean narrower? Or less aggressive tread pattern? I've got 26x1.5" tires that are on the slickish side and can hit speeds of 20+ mph on the flats under ideal conditions.
04-08-12, 03:11 PM
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On paper (screen, actually), the 8.4 DS should be faster on asphalt because of the gearing.
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04-10-12, 09:28 AM
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Have you looked at cross bikes?
04-10-12, 09:52 AM
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I have looked at the geometry for both bikes and I suspect, if they had the same wheels, they will behave almost identically.
As mentioned above, the only limitation to your speed on the Cobia is that the top gear is a 44/11, while the top gear on the 8.4 would be 48/11. According to the Sheldon Brown gear calculator, with a 44/11 and 700 X 38C wheels, you will be going ~52km/hour when pedaling at 100 RPM (About 31 mph), and 57 km/hour with the 48/11 at 100 rpm (about 34 mph).
I really doubt there would be much noticable difference beyond that. Unless you plan to do a lot of road riding and need to be ready to ride rough trails necessitating wider tires in a hurry, you should just put road tires on the 8.4. THere is no need for a new bike.
As mentioned above, the only limitation to your speed on the Cobia is that the top gear is a 44/11, while the top gear on the 8.4 would be 48/11. According to the Sheldon Brown gear calculator, with a 44/11 and 700 X 38C wheels, you will be going ~52km/hour when pedaling at 100 RPM (About 31 mph), and 57 km/hour with the 48/11 at 100 rpm (about 34 mph).
I really doubt there would be much noticable difference beyond that. Unless you plan to do a lot of road riding and need to be ready to ride rough trails necessitating wider tires in a hurry, you should just put road tires on the 8.4. THere is no need for a new bike.
Last edited by DCB0; 04-10-12 at 09:56 AM.
04-10-12, 01:33 PM
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maybe the OP would like a straight bar road bike? there's a bike selectionof 700 tires out there and the right bike can take wide tires.
04-10-12, 01:44 PM
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Originally Posted by rumrunn6
maybe the OP would like a straight bar road bike? there's a bike selectionof 700 tires out there and the right bike can take wide tires.
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