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Cyclocross and Gravelbiking (Recreational) This has to be the most physically intense sport ever invented. It's high speed bicycle racing on a short off road course or riding the off pavement rides on gravel like :The Dirty Kanza". We also have a dedicated Racing forum for the Cyclocross Hard Core Racers.

Carbon Topstone

Old 06-20-19, 08:51 AM
  #26  
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Some initial positive impressions from Matt Gersib at Riding Gravel:

"I’ve been fortunate to have received one of the first Topstone Carbon Force eTap AXS bikes in the country for testing on Riding Gravel. Look for the introduction to that test to come very soon, but my initial rides on the bike have been very encouraging. In fact, out of the box, it’s one of the lightest, most responsive and smooth-riding bikes I’ve ridden."


http://ridinggravel.com/gravel-bikes...pstone-carbon/
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Old 06-20-19, 08:52 AM
  #27  
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Tire clearance is . . . marginal for a 700c x 38mm tire (see today's press photos). Gimmicky bearings holding the seat stays to the seat tubes. ("Let's do an Isospeed knock-off that Trek won't sue us for!") And 30mm -- that's about 1.25 inches -- of "boing, boing" flex at the saddle. YIKES! I know some of you guys love a lot of flex in a gravel bike, but YIKES! That's a noodle!

Of course, if you weigh 110 pounds, the flex issue won't be as big. But if you weigh 200 pounds . . . brings to mind the silly old "Green Acres" intro where Oliver is bouncing along on his tractor! Boing! Handling on this bike will be very different depending on the weight of the rider.
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Old 06-20-19, 08:53 AM
  #28  
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Originally Posted by shoota View Post
Yep, the Agave would be my choice too.
At first it looked bluish gray on my phone, but in other photos it looks like a sandy light grey. I guess I'll have to wait to see one in person.
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Old 06-20-19, 08:54 AM
  #29  
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Originally Posted by HarborBandS View Post
You don't think the Trek Checkpoint, Giant Revolt, Cannondale Topstone, or Specialized Diverge are effective as "quiver killers"?

I do know of several people using Checkpoints and Revolts as road bikes. I could see some roadies turned off by the squishier Specialized future shock, but the Topstone is based on the geometry of the Synapse endurance road bike.

I am with you in wanting to see road bikes with wider tire clearance. It is very limiting to only be able to clear 32c tires.
My Revolt is fantastic as a road bike, with a second wheelset, I'm not really riding my Fuji anymore. lol The D-Fuse seatpost does take a little getting used to on the road, you can def feel it flexing. But it's really comfortable over rough roads, and I have no problems on fast group rides.

But I agree that Giant would never market it that way, they want you to buy a road bike too.
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Old 06-20-19, 08:55 AM
  #30  
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Originally Posted by HarborBandS View Post
At first it looked bluish gray on my phone, but in other photos it looks like a sandy light grey. I guess I'll have to wait to see one in person.
Looks more light green to me lol
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Old 06-20-19, 08:56 AM
  #31  
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Originally Posted by FlashBazbo View Post
Tire clearance is . . . marginal for a 700c x 38mm tire (see today's press photos). Gimmicky bearings holding the seat stays to the seat tubes. ("Let's do an Isospeed knock-off that Trek won't sue us for!") And 30mm -- that's about 1.25 inches -- of "boing, boing" flex at the saddle. YIKES! I know some of you guys love a lot of flex in a gravel bike, but YIKES! That's a noodle!

Of course, if you weigh 110 pounds, the flex issue won't be as big. But if you weigh 200 pounds . . . brings to mind the silly old "Green Acres" intro where Oliver is bouncing along on his tractor! Boing!
Check out the video on the Cannondale site. Looks like lots of movement! Way more than IsoSpeed, which you hated.

I wish they had just made a Synapse-like frame with more tire clearance.
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Old 06-20-19, 09:17 AM
  #32  
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Originally Posted by shoota View Post
Looks more light green to me lol
Probably is! I am bad with hues.
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Old 06-20-19, 09:26 AM
  #33  
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Originally Posted by HarborBandS View Post
Check out the video on the Cannondale site. Looks like lots of movement! Way more than IsoSpeed, which you hated.

I wish they had just made a Synapse-like frame with more tire clearance.
Super-thin seat tube flex zone at the bottom end -- just like Trek Isospeed. Bearings freeing up the seat tube junction (this time with the seat stays) -- just like the Trek Isospeed. Very well designed to permit maximum flex in the rear triangle.

They are clearly marketing the "BOING!" as a selling point. That helps people like me, who think the rear triangle needs to be stiff to be efficient, stay away from bikes we wouldn't like anyway. (I always rode a hardtail mountain bike, too.) And it helps those who are looking for flex find their perfect bike.

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Old 06-20-19, 09:40 AM
  #34  
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Am I the only older rider who's a bit out of shape that would like to see a flat bar option on gravel bikes? Seems to me that the shorter reach that the flat bar provides makes the bike much more comfortable to ride over longer periods of time... albeit at the cost of being less aerodynamic.

Also kind of struggling to understand the difference between the Ultegra RX2 and Ultegra versions.

Overall I like the bike though and will pop into the Cannondale LBS to see when they think they might have one on the floor so I can give it a spin in the parking lot.
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Old 06-20-19, 10:26 AM
  #35  
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They kicked the BB to 11 with proprietary crap. BB30-83 Ai.


So BB30 shell with downhill width and offset spacing.
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Old 06-20-19, 11:04 AM
  #36  
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Originally Posted by ronin4740 View Post
Am I the only older rider who's a bit out of shape that would like to see a flat bar option on gravel bikes? Seems to me that the shorter reach that the flat bar provides makes the bike much more comfortable to ride over longer periods of time... albeit at the cost of being less aerodynamic.
Isn't that basically a 1990's mountain bike?
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Old 06-20-19, 11:11 AM
  #37  
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Originally Posted by gus6464 View Post
They kicked the BB to 11 with proprietary crap. BB30-83 Ai.


So BB30 shell with downhill width and offset spacing.
Now sure I see the problem. Maximize bearing spacing without affecting q factor substantially. Hollowgram cranks are already some of the best out there
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Old 06-20-19, 12:08 PM
  #38  
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Originally Posted by HarborBandS View Post
Isn't that basically a 1990's mountain bike?
Yes... I've been regretting selling the 90's Specialized Rock Hopper I used to own for a long, long time
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Old 06-20-19, 12:51 PM
  #39  
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Originally Posted by gus6464 View Post
They kicked the BB to 11 with proprietary crap. BB30-83 Ai.


So BB30 shell with downhill width and offset spacing.
SOMEBODY get the word to Cannondale . . . people HATE press fit bottom brackets. But they HATE, HATE, HATE non-standard proprietary press fit bottom brackets that limit crankset options!! Gravel bikers, more than roadies, are people who like to try different cranks and gearing. I know gravel racers who ride a different crankset based on the course they're racing on in a given week. If they accidentally buy this bike, with its "we want to force you to buy our crankset" bottom bracket, they are sunk.

And the "integrated" seatpost clamp? Is there any manufacturer that makes one of these that's trouble free? Nobody. A huge proportion of them slip and/or require frequent re-torquing. Why invite that? Traditional seatpost clamps aren't less aero (in spite of appearances) and they WORK. Every time. All the time.

Last edited by FlashBazbo; 06-20-19 at 12:54 PM.
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Old 06-20-19, 01:16 PM
  #40  
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Originally Posted by FlashBazbo View Post
Traditional seatpost clamps aren't less aero (in spite of appearances) and they WORK. Every time. All the time.
I wish someone would tell that to my wife's Jamis Renegade.

Re: BB - Cannondale got it right with the alloy Topstone so this BB30 BS just ticks me off. Totally with you on this. I wonder if there is a screw together adapter for Shimano cranks that fits this offset bb standard?
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Old 06-20-19, 08:15 PM
  #41  
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The more I think about this bike the more I am convinced that this should be called a slate 2 rather than gravel topstone. It has road (synapse) geometry with very short chainstays and high bottom bracket (just like Slate). The only significant difference is that Slate has front suspension and this bike has rear suspension. Now its time for cannondale to finally merge both solutions and make a bike that will have a full suspension (a better version of niner magic carpet ride).
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Old 06-20-19, 10:43 PM
  #42  
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Makes no sense why this didn't come with a spec with the Lefty Oliver.
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Old 06-21-19, 12:36 AM
  #43  
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Originally Posted by gus6464 View Post
Makes no sense why this didn't come with a spec with the Lefty Oliver.
The only explanatoion I can think of is cost. But again if they sell models with carbon SAVE stem and handlebar for over 5k then it should be doable to offer a Lefty in that price range. Maybe they did not do that to avoid chsnging the frame geometry (models with rigid fork would be hampered by having a suspension fork geometry without actually having that kind of fork). On the other hand making 2 variants of frame could not be cost effective...

Last edited by sweetspot; 06-21-19 at 04:12 AM.
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Old 06-21-19, 04:11 AM
  #44  
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OMG.....30mm of suspension
Time to buy an MTB
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Old 06-21-19, 04:57 AM
  #45  
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Originally Posted by sweetspot View Post
The only explanatoion I can think of is cost. But again if they sell models with carbon SAVE stem and handlebar for over 5k then it should be doable to offer a Lefty in that price range. Maybe they did not do that to avoid chsnging the frame geometry (models with rigid fork would be hampered by having a suspension fork geometry without actually having that kind of fork). On the other hand making 2 variants of frame could not be cost effective...
The slate came with a rigid fork spec too one year. But it probably has to do with the oliver being designed for 650b wheel only.
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Old 06-21-19, 12:37 PM
  #46  
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Originally Posted by trailangel View Post
OMG.....30mm of suspension
Time to buy an MTB
A thread about blurred category bikes or current ways for brands to design comfort into frames = an opportunity for angel to beat the horse and declare an MTB is needed.
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Old 06-22-19, 06:40 PM
  #47  
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Originally Posted by HarborBandS View Post
You don't think the Trek Checkpoint, Giant Revolt, Cannondale Topstone, or Specialized Diverge are effective as "quiver killers"?

I do know of several people using Checkpoints and Revolts as road bikes. I could see some roadies turned off by the squishier Specialized future shock (Roubaix is stiffer), but the Topstone is based on the geometry of the Synapse endurance road bike.

I am with you in wanting to see road bikes with wider tire clearance. It is very limiting to only be able to clear 32c tires.
Iím a roadie at heart and just picked up a 2020 Revolt and after 3 days of ownership/riding, I can totally see it being a quiver killer. If I were to slap on a set of skinnier GP5000 tires, I can guarantee it would almost be as fast as my ďgo fastĒ bike. One of the selling points for me with the Revolt was itís lack of suspension/weird handlebars/gimmicks.
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Old 06-23-19, 07:29 PM
  #48  
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Originally Posted by FlashBazbo View Post
SOMEBODY get the word to Cannondale . . . people HATE press fit bottom brackets. But they HATE, HATE, HATE non-standard proprietary press fit bottom brackets that limit crankset options!! Gravel bikers, more than roadies, are people who like to try different cranks and gearing. I know gravel racers who ride a different crankset based on the course they're racing on in a given week. If they accidentally buy this bike, with its "we want to force you to buy our crankset" bottom bracket, they are sunk.
Worse yet... this custom offset bottom bracket requires a CUSTOM DISHED REAR WHEEL, per a few articles Iíve read out there. So you canít easily upgrade or replace your wheels without getting the rear one re-dished.

That is so ridiculous. Total deal breaker.

Last edited by HarborBandS; 06-23-19 at 07:50 PM.
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Old 06-24-19, 07:17 AM
  #49  
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Originally Posted by HarborBandS View Post
Worse yet... this custom offset bottom bracket requires a CUSTOM DISHED REAR WHEEL, per a few articles Iíve read out there. So you canít easily upgrade or replace your wheels without getting the rear one re-dished.

That is so ridiculous. Total deal breaker.
For me, if it were just ONE of any of things I could probably get past it. Re-dishing the rear wheel isn't that big of a deal from what I hear. But all the proprietary stuff adds up and I can't handle it.
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Old 06-24-19, 07:22 AM
  #50  
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Originally Posted by shoota View Post
For me, if it were just ONE of any of things I could probably get past it. Re-dishing the rear wheel isn't that big of a deal from what I hear. But all the proprietary stuff adds up and I can't handle it.
I like to upgrade and tweak my bikes over time, and do all of my own work. Anything on a bike model that I would need the assistance of a shop for is a nonstarter for me.
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