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[Closed] Aero Gravel Speed Machine

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[#10643012]

While I wait on a resolution to my cracked Calibre Dune, I'm going with the default position of suck it up. Thus thoughts turn to a new bike and while fat has been fun, I do miss the speed and milage of the open road. Linking all the bridleways and byways on the fattie could be a bit of a chore at times, so I'm looking for something with a bit more oomph.

As I don't particularly want to sell a kidney, lung and spleen, and my wife might object to me selling both the kids, I can't afford a 3T Exploro; but that's what I'd really like. Something that I can go fast on road, but also whang it along the local bridleways and byways. So if my budget was up to £2K, what bikes should I be looking at…?

I quite liked the look of the Marin Gestalt X11, but was worried it was a bit more off-road focused. I've always liked the look of the NS Bikes RAG+, but maybe fancy having a carbon frame for a change. I'm open to suggestions.

Thanks,


 
Posted : 28/05/2019 12:19 pm
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Posted : 28/05/2019 12:41 pm
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After seeing the Space Chicken posts last week I was sore tempted and I wasn't even looking for a bike...

https://singletrackworld.com/forum/topic/new-bike-day-gravel-and-on-one-planet-x-content/


 
Posted : 28/05/2019 12:45 pm
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They actually make aero gravel bikes?

Which are by definition mostly upright and so not aero?


 
Posted : 28/05/2019 1:02 pm
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@rOcKeTdOg Bergamont Grandurance 6…? Quite the price difference between that and the Elite…

@eddiebaby I saw that thread and have always liked the look of that bike. I'd just rather not give them my money…

@cynic-al Looks fast sitting still…
3T Exploro


 
Posted : 28/05/2019 1:05 pm
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Not really aero, but very, very fast on the road and really good off it too is the Kinesis G2.


 
Posted : 28/05/2019 2:06 pm
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Surely the only way a bike can be fast on the road is by being aero?


 
Posted : 28/05/2019 2:28 pm
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RAG+ owner here. It's not aero but the riding position is lower than some similar bikes, if you want to 'slam it'. I really like mine, it's used for commuting and shortish, quick rides around the local tracks. It feels properly sturdy and is quick enough on the road using 38c tyres.


 
Posted : 28/05/2019 2:29 pm
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Space chicken.

Oh...

😐


 
Posted : 28/05/2019 2:38 pm
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Which are by definition <s>mostly upright and so not aero?</s> a drop bar bike like any other

Upright positioning is a personal preference, not a definitive characteristic. My road, cx and gravel bikes are mostly setup fairly similarly. The odd one out is the vagabond which I'm struggling to love at the moment.

Knobbly tyres are obviously a hindrance but there's probably still gains to be made. I suspect though that they're less than on the road, simply because turbulent air tends to break away more cleanly* so the difference between a square box rim and a deep section will be less with a knobbly than it would with a slick.

I've been riding my Plug in SSCX guise a lot recently and it certainly feels fast on unsealed roads (and seem to get loads of strava PB's whenever I take it out so must be doing something right).

Having said that, I think that once you've dealt with the riders position you've got most of the benefit. Any gravel bike will probably feel like a rocket ship compared to a trail bike just because it weighs <20lb and has fast tyres on it. It would be interesting to see what the actual difference between a proper XC race bike and a proper gravel racing bike actually was.

*Golf balls, chimney spirals, vortex generators on truck cabs etc.


 
Posted : 28/05/2019 2:59 pm
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Having said that, I think that once you’ve dealt with the riders position you’ve got most of the benefit

That's my point - the most significant thing to get you aero is your tuck. I wonder how many riders of aero gravel bikes have that sorted.


 
Posted : 28/05/2019 3:17 pm
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Carbon Rondo HVRT? Looks aero at least, adjustable geo to address some of the issues above....maybe not gravel enough?

I'm not sure I can unsee the brake caliper fairing though


 
Posted : 28/05/2019 3:29 pm
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@remoterob you find me a Rondo HVRT CF for under two grand and I'll buy it… 🤣 The RUUT is already on my dream on dreamer list.


 
Posted : 28/05/2019 3:38 pm
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I wonder how many riders of aero gravel bikes have that sorted.

Probably most of them if they actually race. If they don't then what does it matter?


 
Posted : 28/05/2019 3:41 pm
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That’s my point – the most significant thing to get you aero is your tuck. I wonder how many riders of aero gravel bikes have that sorted.

True, but like the eternal "shall I lose some weight or have a poo?" question, the two aren't mutually exclusive. You can have a light bike and have a poo, just like you can think about your position and have an aero bike.

Specialized claim their new roubaix is ~24 seconds faster over 40km (presumably in 1 hour at pro speeds?). Which is a lot if you're racing someone in a breakaway. But for the average rider I suspect that "feels fast" is more important than actually being fast, and in that respect any alloy or carbon gravel bike will probably feel fast. I was out for a blast yesterday and most of the time the limiting factors were my arms giving up 3/4 the way across a field of crops from the constant shaking, or my brain wondering quite how much punishment I really should be dealing out to a 5 year old alloy fork.


 
Posted : 28/05/2019 4:03 pm
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Giant TCX, carbon version.


 
Posted : 28/05/2019 4:07 pm
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It doesn't matter as such, but the rider may be buying a bike based on a benefit that doesn't exist, and possibly drawbacks like less comfort.


 
Posted : 28/05/2019 4:50 pm
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It doesn’t matter as such, but the rider may be buying a bike based on a benefit that doesn’t exist

Are you saying there is no benefit in aero bikes?


 
Posted : 28/05/2019 5:05 pm
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For some reason I started browsing on AliExpress and turned up this, which looks suspiciously like a 3T Exploro:

Exploro knock-off

Has anyone heard of this Carbomania bunch before…? I hadn't thought about going build your own, but that's tempting.


 
Posted : 28/05/2019 5:15 pm
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bikebouy

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Giant TCX, carbon version.

Would a Revolt not make more sense than a CX bike?


 
Posted : 28/05/2019 5:34 pm
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I think my gravel bike is probably the one I'd least like to get as an open mold from china. It depends on your particular definition of "gravel" but mines probably the bike I hammer the furthest outside it's original design intent!

If you're medium or medium/large then Pauls have the TCX SLR 1 for £1349, splurge the change on some carbon lightbike wheels, carbon post and nice bars and you'd have a rocketship of a bike.

[edit] and the carbon version is £1499!


 
Posted : 28/05/2019 5:34 pm
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I’m just recommending what I have.

The TCX is an ace bike for either CX or Gravel, and I’ve raced both on mine.

Worth looking for deals on last years model..


 
Posted : 28/05/2019 5:38 pm
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I built this for not far over £2k (I think).

[url= https://i.ibb.co/yfTq7M3/32-D6-D020-30-D4-4549-AEAF-DD328995-BA68.jp g" target="_blank">https://i.ibb.co/yfTq7M3/32-D6-D020-30-D4-4549-AEAF-DD328995-BA68.jp g"/> [/img][/url]

Start fitness have the frames down to £1499 and I shopped around and reused parts I had for the rest - eg wheels were sale from crc for £180, seatpost I had, cassette is sunrace. Shop smart and you might get near your budget.

It weighs hardly anything and is an absolute rocket. It’s not aero as such but I’d be surprised if there was anything as fast and comfortable other then the 3t.


 
Posted : 28/05/2019 5:40 pm
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@mashr @bikebouy I did think the Revolt might be better suited, but open to ideas…

@thisisnotaspoon that would be the only worry; could stick that new Shimano gravel groupset on it though…

@squealer nice looking ride, shame Start Ftiness only have it in Red and in sizes too big for me…


 
Posted : 28/05/2019 5:51 pm
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that would be the only worry; could stick that new Shimano gravel groupset on it though…

Depends how tribal you are about road groupsets. I've got SRAM on my CAADX and TBH after a few minutes you forget that it's different to shimano. With the added bonus that the SRAM 2x shifter works 1x just with a redundant paddle, whereas shimano keeps flapping which some find irritating.

The hoods look a bit bonkers but again it's invisible after a few minutes.


 
Posted : 28/05/2019 6:04 pm
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Just been out for another blast on the Plug SSCX, out of 29 Strava segments I got 22 achievements, 18 PR's, 2x top tens on a loop I'd normally do on the XC bike. I might be enjoying this bike a bit.........

There's probably a benefit to getting more aero, but as Al says it'll be marginal. The fun comes from the frame feeling stiff, the tyres being almost slick (I'm on schwalbe cx comp front and sammy slick rear) and the position just encourages you to push harder.


 
Posted : 28/05/2019 10:45 pm
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@thisisnotaspoon Not come across the Plug before, seems quite cheap…?


 
Posted : 29/05/2019 11:13 am
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Are you saying there is no benefit in aero bikes?

No, I'm saying buying a bike on the basis of aero is of dubious benefit/a waste of £ if you can't/don't get your tuck optimised


 
Posted : 29/05/2019 11:27 am
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No, I’m saying buying a bike on the basis of aero is of dubious benefit/a waste of £ if you can’t/don’t get your tuck optimised

Yes. But like I said if you're not at the pointy end of racing then what does it matter. If the op wants an aero bike, let him buy one.
Someone on an aero bike with a bad tuck is still going to be more aero than someone on a non aero bike with a bad tuck.


 
Posted : 29/05/2019 11:40 am
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Not come across the Plug before, seems quite cheap…?

It is, it's probably not the bike I'd buy if I had £2K to spend. Just illustrating the point that £ =/= speed when it comes to bikes that are fundamentally already pretty light and rigid! There's not a lot you can really add to that formula beyond nicer groupsets and a sprinkling of carbon pixiedust.

I've got a caadx as my nice geared gravel/cx bike and it's nicer in just about every way. But the singlespeed makes you work harder up the long gentle inclines and occasional short sharp steep ramps that make up the climbs round here.

Those TCX carbons at Paul's have got me looking at the shed wondering what I could sell.......


 
Posted : 29/05/2019 11:42 am
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Just been out for another blast on the Plug SSCX

Thisisnotaspoon - got any pics? Is it just stock? I'm converting my singlespeed road Plug into a geared gravel Plug, just curious what you've done with yours.


 
Posted : 29/05/2019 12:09 pm
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If the op wants an aero bike, let him buy one.

Of course he can, I'm just pointing out it may be a waste of money.


 
Posted : 29/05/2019 12:20 pm
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There’s not a lot you can really add to that formula beyond nicer groupsets and a sprinkling of carbon pixiedust.

@thisisnotaspoon this is the current focus of today's searching, as all the stuff suggested and mentioned so far has such a wide variety of components attached, it's hard to make direct comparisons. Having never had a bike with any carbon pixiedust, I'd quite like some… 🤷‍♂️


 
Posted : 29/05/2019 12:56 pm
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@cynic-al I can get myself into a full pike, with my forehead on my legs, getting in to an aero tuck is not hard. Staying in it for a long time on the other hand…


 
Posted : 29/05/2019 12:58 pm
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Thisisnotaspoon – got any pics? Is it just stock? I’m converting my singlespeed road Plug into a geared gravel Plug, just curious what you’ve done with yours.

Mine is the alloy version which would have come with cantis, the only mod has been to swap them to mini V's. Ive also got 35/38c tyres fitted (40's would fit comfortably and are probably my next change, looking at Continental Ride AT's).

I don't think the steel version would work so well as it's got caliper brakes and less clearance?

Loving it, but have to admit that even with drops my wrists and hands are quite painful this morning, but I really did go out to hammer it last night on rough* tracks. Would really like to try something like a Cannondale Slate with a proper 'fork' up front.

*Nothing gnarr, just farm tracks, byways, the odd bit of singletrack and arable fields.

this is the current focus of today’s searching, as all the stuff suggested and mentioned so far has such a wide variety of components attached, it’s hard to make direct comparisons. Having never had a bike with any carbon pixiedust, I’d quite like some…

I bought the plug SH to supplement the CAADX as a cheaper bike to be locked outside the supermarket etc. But having ridden it about 400miles now I'm realising how hard you can actually push these skinny wheels (the joys of cheap wheels I don't have to GAS about smashing). Need to get back out on the CAADX as TBH my previous riding was much more risk averse bimbling.

'Gravel' has taken on meanings as everything from bimbling on fire roads, making life deliberately difficult on XC rides, cx bikes, to racing, and there's bikes to suit all those so there's decisions to be made about what exactly you want. Id do what I did and get something like a cx bike with clearance and then see what you actually enjoy riding before spending a lot of money on a type bike that you may not actually like e.g. a slate vs a CAADX will suit very different rides or people, or at least their willingness to endure some discomfort!


 
Posted : 29/05/2019 2:16 pm
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Mine is the alloy version which would have come with cantis, the only mod has been to swap them to mini V’s. Ive also got 35/38c tyres fitted (40’s would fit comfortably and are probably my next change, looking at Continental Ride AT’s).

I don’t think the steel version would work so well as it’s got caliper brakes and less clearance?

Loving it, but have to admit that even with drops my wrists and hands are quite painful this morning, but I really did go out to hammer it last night on rough* tracks. Would really like to try something like a Cannondale Slate with a proper ‘fork’ up front.

*Nothing gnarr, just farm tracks, byways, the odd bit of singletrack and arable fields.

Ah OK, so same as mine then. I've got some 45c WTB Resolutes fitted on the MTB at the moment, hoping to squeeze them in but otherwise will start off with the stock 38c Kenda Kwiks until I decide it's worth persevering with. Fancied trying a Redshift suspension stem and something more shock absorbing under the saddle, maybe an eBay VCLS 'leaf spring' clone.

Adding gears with bar-end shifters, 38/25 Rotor chainrings and a Suntour XCD hub with 7 x 10 speed sprockets. Should be a fun build, will make a good winter road bike if nothing else...

Got to admit though that the 100mm Rebas on my 29er seem to make an awful lot of sense on typical Scottish 'gravel' terrain though...


 
Posted : 29/05/2019 4:17 pm
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Agree with cynic-al. Frame design is always a series of compromises. An aero tubeset for a gravel bike would be a curious priority when set against compliance and vibration dampening or weight. Similarly a gravel frame that prioritised getting the rider slippery over control or indeed comfort would be odd. I think you'd only really be doing either to make it look good leaned against the cafe wall.


 
Posted : 29/05/2019 4:37 pm
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I think 'gravel' + 'aero' is another US thing. From what I've seen of some of their 'gravel' terrain then aero seems relevant, but everything I've attempted to ride in Scotland (so far) demands more in the way of MTB suspension than it does aero, couldn't imagine holding a tuck or maintaining any sort of pedalling rhythm for very long.

Then again, aero wheels seem curiously popular in CX races, so what do I know...


 
Posted : 29/05/2019 4:46 pm
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Ref aero/deep section wheels for cx racing. It’s more to do with the rim profile shedding mud better than a flatter rim profile, and theoretically being laterally stiffer.
It’s not for aero gains.


 
Posted : 29/05/2019 5:54 pm
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I should really stop looking at the internet, it's just confusing… Just when you think you might have decided, you look at something else and change you mind. I think I need someone to slap me around the face with a fish and tell me to get a grip.

Anyway, never having run any SRAM stuff, I don't know how they different levels compare to to Shimano. Is Apex the equivalent of 105, or is that Rival…?

Is the Rondo RUUT AL just a better NS RAG+…?

If I stuck 28mm tyres on 700c wheels, and all other things being equal, went out for a long road ride on the Marin Gestalt X11 or Nukeproof Digger, would I really get pissed off that they're maybe not as racy on-road as the NS RAG+ or Rondo RUUT AL. Or would, as a mere plodding mortal, I not notice any difference whatsoever…?


 
Posted : 29/05/2019 7:02 pm
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Anyway, never having run any SRAM stuff, I don’t know how they different levels compare to to Shimano. Is Apex the equivalent of 105, or is that Rival…?

Apex is somewhere between Tiagra and 105, it's good solid kit generally.

Is the Rondo RUUT AL just a better NS RAG+…?

The frames are almost identical but the Ruut has that flip-chip fork thing, for what it's worth.

If I stuck 28mm tyres on 700c wheels, and all other things being equal, went out for a long road ride on the Marin Gestalt X11 or Nukeproof Digger, would I really get pissed off that they’re maybe not as racy on-road as the NS RAG+ or Rondo RUUT AL. Or would, as a mere plodding mortal, I not notice any difference whatsoever…?

The Marin and The Digger are more MTB inspired off-roady g'bikes (see also Saracen Levarg and Whyte Friston) The RAG and Ruut are somewhere nearer the 'adventure road / evolved cx part of the spectrum, maybe they'd be a bit quicker but I suspect the wheels and tyres would be the biggest factor.


 
Posted : 29/05/2019 10:12 pm
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The problem I found with 28mm tyres in place of 38mm is you drop the bb by half an inch, and still have quite a long/slack bike by road standards, so it feels quite sluggish.

What big tyres gain in inertia you get back in BB height, the higher bb makes the bike feel more lively and nimble.

Apex/rival/force/red = tigra/105/ultrgra/red people will argue the toss but in broad strokes they're much of a muchness. Apart from a few grammes there's nothing really to split 105 and ultrgra and the same applies to SRAM. The more you pay the lighter the groupsets and the more polished (literally) the ascetics. I cant actually remember whether my CAADX is apex, rival or force........

SRAM is generally lighter for a given level, shimano shifts better. Ergonomically you just have to pick a side and defend your choice till judgement day.

As for the rag+ vs digger, ive ridden neither but my gut says go for 700c wheels unless you're short. I can see the argument for smaller stronger and better handling wheels, and the ability to swap to 700x25 without messing about the geometry. But big wheels just roll better. I'd consider 27.5 wheels either as a fudge on a cx frame or to squeeze a suspension fork in (slate) but not as a starting point.


 
Posted : 30/05/2019 12:01 am
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Ah OK, so same as mine then. I’ve got some 45c WTB Resolutes fitted on the MTB at the moment, hoping to squeeze them in but otherwise will start off with the stock 38c Kenda Kwiks until I decide it’s worth persevering with. Fancied trying a Redshift suspension stem and something more shock absorbing under the saddle, maybe an eBay VCLS ‘leaf spring’ clone.

I'm on I'm on 39-16 gearing which is marginal, it's fine once I've warmed up but the first little hill hurts somewhat and o spend a lot of time 'pushing' the pedals rather than spinning! The original 42t (44?) chainring was high even on the road! I'm tempted to build a new wheel and go fixed/free with a 19t freewheel for climbing/descending and 17t sprocket for the flat rides.

Tyre wise I'm seriously impressed with the cheap schwalbes , apart from the sammy slick punctures too easily, I think due to the lack of any tread meaning there isn't much rubber. The file pattern is all but gone in the center already and I've ripped a lot of the intermediate side knobs off (which kinda makes me wonder what the purpose of more expensive dual compound tyres is!)


 
Posted : 30/05/2019 12:11 am
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Decided to try and price up building a RAG+ myself. I'm sure I've missed stuff, and didn't do a particularly thorough job of finding suitable options. I'm also not sure if those Hunt wheels can take a 15mm thruaxle…

Component	What	                        Where	Price
Frameset	NS Bikes RAG+	                CRC	£600.00
Aheadset	Brand-X Tapered	                CRC	£13.49
Spacers	        Brand-X 5mm	                CRC	£5.99
Stem	        Brand-X Road	                CRC	£9.99
Handlebars	Brand-X Road Racing 44cm	CRC	£9.99
Bar tape	???	                        CRC	£10.00
Seatpost	Brand-X Inline 6061	        CRC	£14.99
Saddle   	Ergon SR Road Pro	        CRC	£89.99
Shifters	Shimano ST-RX810	        Rose	£507.00
Brakes	        Shimano BR-RX810	        Rose	
Rotors	        Shimano SM-RT800	        Rose	£62.00
Bottom bracket	Shimano SM-BBR60 BSA	        Rose	£13.00
Chainset	Shimano FC-RX810-1	        Rose	£182.00
Derailleur	Shimano RD-RX812	        Rose	£91.00
Cassette	Shimano CS-M8000	        Rose	£55.00
Wheels	        HUNT 4 Season Gravel X-Wide	HUNT	£329.00
Tyres	        WTB Resolute TCS Light 42c	CRC	£67.98
                                                        ---------
		Total	                                £2,061.42
			                                =========
                        Price           Difference
	NS Bikes RAG+	£1,599.99	£461.43
	Rondo RUUT AL	£1,699.99	£361.43

 
Posted : 30/05/2019 2:15 pm
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ridley x trail carbon


 
Posted : 30/05/2019 4:38 pm
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