Anecdotal evidence - but I’ve heard from a few ppl that the Racekings are very tight in the MOG!
I’m personally waiting more more bikes that official clear 2.2. Bikes like the Allied that are not 5K a frameset lol
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That is correct…I think most ENVE riders are using 2.1’s or 50’s in the rear.
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Cheapest integrated bike with space for the 2.2 rk is the revolt. You can buy 4 frame only revolts for the price of one allied, so technically you have space for 8 race kings.
I don’t think that will be 8 times as fast but you might need to test it on a performance rig.
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only issue i have with it is it does not have udh..
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Non UDH derailleurs (e.g. the XX1) are compatible with the latest Red, more reliable, cheaper, lighter, and you can run KMC chains, so the overall drivetrain is several watts faster.
If you were wondering, I’m told it looks a little like this:
Or you could run GRX 2x, which is more efficient still.
PS the Revolt is also one of the only bikes that will fit 2.2 RK’s with GRX 2x, because the rear wheel can be pushed rearwards away from the front derailleur.
I really should just buy one of these damned frames I don’t know why I haven’t. Oh thats it I don’t like the sort of baby sky blue colour.
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Seigla is udh and officially supports 2.2’s, but no integrated cables. And front suspension option if that’s your thing. I almost pulled the trigger on a frame, but wasn’t going to change before unbound and would like to ride one first. I think geometry will work, but bottom bracket drop concerns me a little (especially running mtb tires)
If anyone still has a spare BRR.com vote and is interested in the rolling resistance of large tires, the Schwalbe G-One Speed Pro 2.35" is currently in a nail-biter of a battle with a Pirelli 28mm tire in the voting list. This tire is by Schwalbe’s own claims “the fastest-rolling tire they’ve ever tested in their lab”.
An earlier iteration of this tire - the Schwalbe Big One - was at one point the fastest tire ever tested on BRR - and 4 watts faster than the Thunder Burt.
The tire will drop out of the voting list if it doesn’t win this month, so it would be really nice if it could win!
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I’d also be very curious to see that tire’s results. No vote left though…
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I’ve got a vote. I’ll go for it.
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Sooo looks like new Dubnital is a worthy heir to the Race King throne. Testing the 2.4 Rapid Race now (2x pavement and 2x easy gravel so far) and 2.2 soon ish.
Probably look for it to slot in close to Rick XC Speed 2.4 in BRR land.
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What is the software you’re using here? My Golden Cheetah wishes it could look like this.
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It’s Python code modified from someone on Escape Collective Discord… Chung himself is in it pretty often.
I still use Aerolab too but it’s no beauty queen
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Thanks for this. Will the fastest gravel bike now need 2.4 clearance? Yikes!!
over rough gravel / single track the fastest bike will probably be a bike like the Epic WC or Supercaliber. With or without dropbars probably depends on if the course has single track in it or how good your handling of the bike is.
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Ha… maybe depends on your location!
Oh, and I finished testing them. 2.2 rapid race next.
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Gravel Tire Showdown ft. Drew Dillman - Thunder Burt, Race King, Dubnital, Tracer, Thunduro, Getaway
TLDW is that RK 2.2" was tied with the TB 2.1" for the fastest tire on this particular stretch of arguably cat1/2 gravelroad. They rolled down a stretch of gravel and started pedalling @300W once it flattened out for a segment that is 2.8miles long and took time measurements to assess the fastest tire. Dubnital was slower for them but they made comments about “breaking them in to get them faster” after 30min of riding or so and also that the hairs on the tire are probably not very aero.
@jkarrasch testing would suggest that the burts would be the fastest on mellow gravel. But at those speeds cda probably becomes more of a factor compared to crr. If my math is correct they averaged 25.71mph (41kph) on the RK on this particular segment.
Anybody else watched this and has some thoughts?
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I watched the video and it all seemed very willy-nilly and not scientific to me. Plus, testing on only a downhill and flat leaves me wondering the same old…what about going uphill with heavier tires? We have very mellow gravel and endless rollers where I live so I’m fairly sure that mtb tires are not the answer here. By very mellow, I mean a lot of our gravel roads are just unpaved roads with barely any rocks on them.
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from what I’ve learned is that tire weight has a very miniscule effect. There are online calculators for hillclimbs where you can input your systemweight and targeted time for a specified segment. Adding 200g - 400g has almost no effect (0-1W) wheras the delta between slowest CX/Gravel tire on BRR to fastest is over 20W.
If you’re riding rolling terrain and not averaging north of 40kph the fastest tire for you will probably still be the fastest rolling tire for your category of gravel.
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It’s a bit misleading as it assumes a steady effort. If you’re responding to attacks, accelerating out of corners/singletrack then weight matters a bit more. Not as much as aero, but it’s not nothing.
Not necessarily…this is been discussed many times before. The wheels are already rotating in the circumstances you describe. The additional effort to respond to attacks or accelerating out of corners is miniscule.
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