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Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

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Old 04-17-11, 11:45 AM   #1
pb&jslurpee
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Gravity Attack Bikes

I hadn't seen these before on BD. Anyone have experience with them?

http://www.bikesdirect.com/products/...rack_bikes.htm
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Old 04-17-11, 11:55 AM   #2
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Here's another thread about them, but no one seems to actually *have* one....

http://www.bikeforums.net/showthread...gravity+attack
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Old 04-17-11, 12:02 PM   #3
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Gravity strikes again!

Gravity always win.
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Old 04-17-11, 12:22 PM   #4
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I'd be interested to know too. If anyone knows what a Gravity Attack weighs post it!
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Old 04-17-11, 01:38 PM   #5
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I really dislike the sloping top tubes.
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Old 04-17-11, 02:16 PM   #6
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I really dislike the sloping top tubes.
+1
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Old 04-18-11, 11:47 AM   #7
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I picked up a "Gravity Attack Track" back in February and have been riding the hell out of it since. As the bike is set up from the get go, it weighs probably about 20 lbs and rides nicely. The saddle feels comfortable just sitting on it... but for any ride greater than 10 miles or so, it's really terrible. I did have some trouble with pedal strike at first (my first fg) but the frame is stiff enough to be able to easily rescue and get back on to riding. The pedals that come with the bike are pretty... well... nothing fancy. I quickly replaced them with these: http://www.giantnerd.com/vp-vp-399t-...ke-pedals.html which are also nothing special, but will work until my budget allows clipless.
Also, don't expect much from the stock tires as I burnt through my rear in just over 400 miles and I really don't skid much.
BTW: I'm 5'5" and riding a 52cm (using a single 2mm stem riser that I had laying around from a bmx build).

Hm.. what else...
The fork has a cromo steerer (Kinesis' base model fork - separately $99 I believe). Kalin seatpost looks pretty standard... VP logo on the seat and stem cap. Alex r450 rims are pretty heavy at 450g for a 27mm "semi-aero" rim. Sealed bearing Formula hubs... All-in-all pretty standard imo for $300.
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Old 04-18-11, 04:10 PM   #8
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I don't mind a slightly sloping tt but that is a little excessive.
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Old 04-18-11, 04:12 PM   #9
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I don't mind a slightly sloping tt but that is a little excessive.
It's actually a dirt jumper...
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Old 04-18-11, 04:12 PM   #10
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ooooops

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Old 04-18-11, 04:18 PM   #11
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Old 04-18-11, 05:17 PM   #12
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I don't mind a slightly sloping tt but that is a little excessive.
Those bikes are the same type of frames as comfort bikes or touring bikes like the new Salsa Casseroll, which many on this forum consider ugly. They have much longer head tubes for a given frame (seat tube) size in order to raise the bars and provide a more upright seating position. They actually make a lot more sense than using a bunch of spacers under the stem and / or a stem with almost vertical rise. The sloping top tube is required to provide a reasonable standover height. They are not very stylish and don't appeal to fashionistas who place style above practical function. I think it's great that bd has finally provided at least one practical SSFG bike for folks who just want something comfortable and could care less about hipster fashion.
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Old 04-18-11, 05:20 PM   #13
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Those bikes are the same type of frames as comfort bikes or touring bikes like the new Salsa Casseroll, which many on this forum consider ugly. They have much longer head tubes for a given frame (seat tube) size in order to raise the bars and provide a more upright seating position. They actually make a lot more sense than using a bunch of spacers under the stem and / or a stem with almost vertical rise. The sloping top tube is required to provide a reasonable standover height. They are not very stylish and don't appeal to fashionistas who place style above practical function. I think it's great that bd has finally provided at least one practical SSFG bike for folks who just want something comfortable and could care less about hipster fashion.
hipster says what?
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Old 04-18-11, 05:58 PM   #14
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sloping forever.
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Old 04-18-11, 06:01 PM   #15
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Looks like a Specialized Langster to me
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Old 04-18-11, 08:52 PM   #16
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It's a good frame... I mean sure, it's a bit hefty for aluminum and the welds (ugly welds don't necessarily mean weak welds) and paint suck... but it's as stiff as the hulk's nipples and you don't have to suck up your nuts when stopped standing at a traffic light. It's a good bike for the money, nothing more, nothing less. Is it hipster? Probably not. Will it travel 50 miles and beg for more? Yes. I guess it's not particularly aero... but neither is my gut, so not really my primary concern atm.

Today I went on a 10 mile ride with a friend that hadn't been on a bike in years at a casual pace of ~8-10mph. After our ride, I rode another 5 miles home at ~21mph. Same bike, comfortable in both scenarios. (Speaking of the frame anyway, the seat is pretty terrible).

Also I guess worth mentioning... I got my cranks to flex today as I did a short sprint through a hole in traffic to cross a 7-lane street onto a side street (3N, 3S, +1 center turn lane). I started at roughly 16mph and peaked at just over 28mph during the sprint, and slowed back down to 18 once I left the main road.
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Old 04-18-11, 08:58 PM   #17
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For those who haven't seen yet, here's my 2011 Gravity Attack Track in action:



(My real camera broke a couple weeks ago and I have yet to replace it. Cell phone pics only for now... ).
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Old 04-18-11, 09:44 PM   #18
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I'm 5' 8" but have short legs (about a 29 inch inseam), so the sloping tt appeals to me. I agree that it doesn't look as good as regular tt, but this seems practical.
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Old 04-21-11, 03:27 PM   #19
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Wow, that stem is short.
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Old 05-08-11, 07:25 AM   #20
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Aluminum frame for a city ride = yuck for me. Keeping it real with steel baby!
Still a sharp bike tho!
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Old 05-08-11, 10:57 AM   #21
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I prefer steel for city riding. I ride both aluminum and steel bikes but prefer feel of steel. That's a preference. Some people will say the Kilo flexes and want something "really stiff" so its more "efficient". I think a little flex in a street bike is a good thing. The only place where I would not want any flex is a track bike for short races at the track.
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Old 05-08-11, 09:18 PM   #22
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Wow, that stem is short.
In hindsight, I probably should have ordered 1 frame size smaller and gotten a bigger stem...

Critical issue? I think not.

BTW, I'm officially clipless as of yesterday and absolutely love it.
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Old 05-08-11, 09:59 PM   #23
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As the bike is set up from the get go, it weighs probably about 20 lbs and rides nicely.
First off, thanks for the review. It's nice to see someone who's bought the bike give some feedback on it. Forgive me for nitpicking, but have you put the bike on a scale or are you estimating? I'm just curious about the weight.

I wish manufacturers would list weights for their bikes. On Trek's website (for example) they give some lame reasons why they don't. But really, it wouldn't hurt anything to say: this bike weighs xx pounds as pictured, in a size 56cm. Or whatever. To at least give some idea for potential buyers.

Rant/
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Old 05-10-11, 07:41 AM   #24
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That was just an estimate on the weight. The stock brake calipers are heavy, the stock wheels are heavy (for non-aero-type rims), the seatpost is heavy, and the bars are heavy. Replacing all of those bits with weight weenie parts would bring this bike in the 15-16 lb range for sure. As I have it set up currently, (in 52cm) with two 24oz aluminum water bottles (filled), a newly added tektro crosstop brake lever, 1 stock brake caliper on the front, new "no contest" saddle @ 240 gr (http://bikeisland.com/cgi-bin/BKTK_S...ls&ProdID=1842), front and rear lights, Hutchinson Intensive tires on front and rear, and a cateye strada wired computer it's about 4-5 lbs lighter than my friend's stock 58cm Vilano. I may take a couple pics for you guys sometime in the near future.

Edit: Forgot to mention that the stock forks have a cromo steer tube, not alloy. Expect that to weigh a bit.
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Old 05-10-11, 01:14 PM   #25
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Damn. Just tried to order one and they're out of stock on 52CM's in both colors.

Last edited by screamtone; 05-10-11 at 01:29 PM.
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