Carbon XC dropper p...
 

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[Closed] Carbon XC dropper post anyone?

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[url= http://www.bikeradar.com/mtb/news/article/ultralight-ks-lev-carbon-dropper-post-previews-at-taipei-show-36783/ ]Linky...[/url]

Not exactly light however is it?


 
Posted : 21/03/2013 11:49 pm
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It's a fair bit lighter than a reverb (500 grams) but the drop is next to useless. If it could do 100mm and the price was right it might almost be worth it.


 
Posted : 22/03/2013 12:06 am
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I wouldn't call that amount of drop useless... I wouldn't buy it, but then I'm not a proper XC rider/racer. Wonder what the complete weight is? And how many seconds you have to gain in the descents to override 200 grams on the climbs? (or alternatively, what if you're using it in a weight-restricted discipline? They've put some thought into road use there...)

Seems a bit odd they've based it on the Lev, it's got extra worky bits over the older designs, has to add a little weight and the cable management will make very little difference with the short drop.

Interesting anyway, but not for most of us.


 
Posted : 22/03/2013 12:17 am
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200g on a climb is about 0.016w extra energy output!!


 
Posted : 22/03/2013 7:04 am
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good idea - those who would think its pointless with that travel are totally missing the point

they are not flying down the alps with 150mm front and rear, most xc racers will have a 100mm travel max up front (some even 80mm), so its comparable to the amount of travel they use

lets face those xc racers can ride with a seat up there arse better than most of us can with 150mm drop, but i bet a few of them would love the option to drop it a bit without punishment of stopping/readjusting etc


 
Posted : 22/03/2013 8:46 am
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200g on a climb is about 0.016w extra energy output!!

What's that based on

I think it's interesting, but isn't quite there yet. Big money too.


 
Posted : 22/03/2013 8:58 am
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Pretty pointless bit of kit really.

Too expensive, not that light, not enough drop (IMO). As someone who races XC at a reasonable level & has raced some fairly gnarly XC (BC Bike Race & Downieville Classic are 2) I can say I won't buy it, but if someone wants to give me one..

I imagine there'll sell them by the truckload!


 
Posted : 22/03/2013 9:47 am
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IMO that's plenty of drop for XC, singletrack, light trail riding.

Too expensive for me tho.


 
Posted : 22/03/2013 9:54 am
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Don't think I'd use one for an XC race- while the ones in Scotland are more technical, they're rarely tech enough to be worth it, and you just get used to riding fast with the seat up.

Also, in a 24 hour race context, it's one more thing to break that you'd rather didn't.


 
Posted : 22/03/2013 9:59 am
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It's been shown on a road bike?? 🙄


 
Posted : 22/03/2013 10:01 am
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and you just get used to riding fast with the seat up.

lol dropper = skill compensator. I need as many of them as I can get.

Personally I'm a fair bit quicker on downs with the seat dropped a bit, and I'll use one if I race again. (But I'm no podium contender).


 
Posted : 22/03/2013 10:04 am
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$600? Is this going to do the straight $ -> £ we normally get? As the comments mention, surely get a Gravity Dropper?


 
Posted : 22/03/2013 10:05 am
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njee on a climb most average fellas put out a wattage of about 4w, divide that by rider and bike weight. Simplistic but is recognised method of weight benefit calc.


 
Posted : 22/03/2013 2:02 pm
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Um powermeters suggest average folks put out 200-300W on a climb, so about 2orders of magnitude greater than the suggested 4W... Did you mean W/kg, which already accounts for body (but not bike) weight?


 
Posted : 22/03/2013 2:10 pm
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65mm of drop..............mmm, seems close to pointless. But that wont stop people buying it.


 
Posted : 22/03/2013 2:12 pm
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njee on a climb most average fellas put out a wattage of about 4w, divide that by rider and bike weight. Simplistic but is recognised method of weight benefit calc.

Errr... No. 4w/kg perhaps? So say they weigh 75kg it's more like 12w extra if you're going down that route. Strikes me as rubbish though - never seen a weight loss translated into a straight power equivalent.


 
Posted : 22/03/2013 2:13 pm
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Given I use the 40mm drop on the DOSS a lot, this would actually quite appeal to me. 400grams without remote or cable though is going to be getting a bit too close to 500g in reality which means it's not that great.

I'd be well up for a 40-60mm drop only post if it was 400g or under with the remote and cable though!


 
Posted : 22/03/2013 2:16 pm
 nuke
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[i]they are not flying down the alps with 150mm front and rear, most xc racers will have a 100mm travel max up front (some even 80mm), so its comparable to the amount of travel they use[/i]

Agreed. My Joplin has not much more at 75mm: perfectly adequate for majority of the Surrey Hills and similar. Having said that, it seemed just about sufficient a drop for riding trails around the maritime alps at the start of this month.


 
Posted : 22/03/2013 2:23 pm
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My original Maverick Speedball isn't much heavier and does 3" of drop. Shonkily made though.


 
Posted : 22/03/2013 2:28 pm
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njee - try here for some proper geeking out 🙂

http://www.cyclingpowerlab.com/PowerComponents.aspx

I make it 0.6w increase in power needed for a 60 min, 10km climb on tarmac at 20kph with the extra 200g with rider power constant around 240Wish (obviously changing with weight change as all other factors are the same, you could look for increase in seconds also if you really really wanted). Obviously massively abstracted from the real world, especially MTB. Other rider weight, power, and a million other variables are available...


 
Posted : 22/03/2013 2:29 pm
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I often drop my post by just that much.


 
Posted : 22/03/2013 2:37 pm

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