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Thread: Trek 7.4 Disc

  1. #1
    Got The Life
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    Trek 7.4 Disc

    Looking at the Trek 7.4 Disc for city riding and possible commuting.

    Anyone have one? Pro's / cons of this model?

    Could you run a Schwalbe Big Apple on the Bontrager Nebula Disc 32-hole disc rims?

    Thanks all.

  2. #2
    blet drive
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    It would make for a good commutter
    Save a tree & wipe your butt with an owl.
    Thank your local Sierra Club.

  3. #3
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    Sounds like a good, safe choice w/ Hayes hydraulics. 2.35" Big Apples might not fit--clearance is closer to a road bike. For perspective, stock rubber is 700x32 (1.26") Bontragers. Huge gear range, though: 48/36/26 and 11-32.

    Trek 7.4 FX Disc ? First Ride Review - BikeRadar

    Joe
    Chicago, IL

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    Wow, 26/32 granny gear on the road, that's crazy!

  5. #5
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    I have a 26/29 but i rarely use 36/26, but on the hills of southern Indiana, I needed the low end there. So it depends. I don't have the power I once did. Full-loaded touring gearing often goes down to 20 gear inches. Might be good gto have such low gearing available for those weekend bike touring events Rodar does.

  6. #6
    weirdo
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    Quote Originally Posted by Straz85 View Post
    Wow, 26/32 granny gear on the road, that's crazy!
    Not crazy at all IMO. I have a 24t ring and 28 or 32 as the biggest sprocket on my bikes and like it just fine that way. I`m sure I could live with a little less granny, but... why? Even with 11-32 spread between seven or eight clicks of the shifter and 10 to 12 tooth jumps in my chainrings, I don`t find the gaps or shifting roughness unreasonable, so no advantage I can see for NOT having a nice deep grany. Racing, I guess, but not any kind of riding that I`m inclined to do.
    Recalculating....

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    I work on top of a big in San Francisco and use my 26-32 combination almost daily.

    Yesterday I was lazy and didn't feel like going around a hill and ended up climbing a 20% grade...It was scary having to go down a 20% grade the other side though and it was 4 times longer. After the fact, I realized should have gone one block over where it would have been 5% at the steepest.

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    I just can't imagine needing to use that gearing. I have a 34/50 in front and 11-32 in the rear and I never even come close to using the easiest of those gears. I'm actually thinking of switching to 1x10 with a 46 or 48t ring and my current cassette. I ride in a relatively hilly area. Granted I have nothing even close to a 20% grade like jseko does. I would probably stick with my current gearing for that. I recently climbed something similar (Burke Mtn, VT) which has 1/2 mile of sustained 18% grade on my road bike with 34/50 rings and 11-28 cassette. Granted I was near suicidal by the top.
    Last edited by Straz85; 08-12-2013 at 07:55 AM. Reason: spelling error

  9. #9
    weirdo
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    I don`t often, if ever, ride 20% grades either, and certainly don`t ride anything like the mountain you just wrote about. I still like my granny. Headwinds, luggage, long hours in the saddle, or any combo of those can drop me into sub 1:1 gearing. Or just a lazy day. Anyway, I don`t see why NOT to have the capability. Your mileage apparently varies, which is fine too.
    Recalculating....

  10. #10
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    Quote Originally Posted by Straz85 View Post
    I just can't imagine needing to use that gearing. I have a 34/50 in front and 11-32 in the rear and I never even come close to using the easiest of those gears. I'm actually thinking of switching to 1x10 with a 46 or 48t ring and my current cassette. I ride in a relatively hilly area. Granted I have nothing even close to a 20% grade like jseko does. I would probably stick with my current gearing for that. I recently climbed something similar (Burke Mtn, VT) which has 1/2 mile of sustained 18% grade on my road bike with 34/50 rings and 11-28 cassette. Granted I was near suicidal by the top.
    Oh, to be young again!

  11. #11
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    Quote Originally Posted by rodar y rodar View Post
    I don`t often, if ever, ride 20% grades either, and certainly don`t ride anything like the mountain you just wrote about. I still like my granny. Headwinds, luggage, long hours in the saddle, or any combo of those can drop me into sub 1:1 gearing. Or just a lazy day. Anyway, I don`t see why NOT to have the capability. Your mileage apparently varies, which is fine too.
    With a lot of gear and on longer trips I could definitely see it. Usually I ride to work, 14.5 miles, with a backpack that has clothes and lunch for the day in it and average 17.0-17.5mph. The other day I rode with panniers with probably 12lbs of additional gear and my average speed dropped by almost 1mph, so if you were talking 50, 100 or even more mileage and enough gear for a couple days, I'd be all over that gearing.

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    Given the speed of your commute, I"m guessing you're not stopping constantly or your commute isn't entirely in an urban area. My commute is only 4 miles but I have more than 40 stop signs or lights during that distance. I expect to go no faster than 5 minute miles or 12 MPH on average although I know I get my bike up way faster than that. For the most part I use my 36 tooth ring because I'm probably going to be stopping in 300 or 500 ft anyway.

    I can say that sustaining 17 MPH for one or two miles is significantly easier than doing my one or two miles of commute though. All that starting and stopping wipes me out.

  13. #13
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    Quote Originally Posted by Straz85 View Post
    I just can't imagine needing to use that gearing. I have a 34/50 in front and 11-32 in the rear and I never even come close to using the easiest of those gears. I'm actually thinking of switching to 1x10 with a 46 or 48t ring and my current cassette. I ride in a relatively hilly area. Granted I have nothing even close to a 20% grade like jseko does. I would probably stick with my current gearing for that. I recently climbed something similar (Burke Mtn, VT) which has 1/2 mile of sustained 18% grade on my road bike with 34/50 rings and 11-28 cassette. Granted I was near suicidal by the top.
    FYI 50/34 at the crank plus 11-32 cassette basically gives you the same range as a triple 50/39/30 with 11-28.

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