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Which is faster for gravel: narrow bars or deep wheels?
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31,277 Views • Apr 4, 2024 • Click to toggle off description
For bike racing, we know narrow bars are faster than wide ones, and we know taller rim are faster than shallow ones. But which one makes more of a difference at real gravel race speeds? I head into the wind tunnel in Indianapolis with Silca to find out.

Helpful links:
Best Bike Split - www.bestbikesplit.com/
Bicycle Rolling Resistance - www.bicyclerollingresistance.com/
Gribble calculator - www.gribble.org/cycling/power_v_speed.html
Zwift Insider Crr - zwiftinsider.com/crr/
Neal Henderson - apexcoachingco.com/gym_trainer/neal-henderson/
Podcast with Ryan Cooper - www.trainingpeaks.com/coach-blog/trainingpeaks-coa…

0:00 intro
6:21 context & tools
12:31 tipping point
15:52 results
20:13 double but why
22:10 6 takeaways

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The Ride is supported in 2024 by:
Castelli clothing: tinyurl.com/43k6pftp
Giro helmets: tinyurl.com/72svzzxp
Silca maintenance: bit.ly/47xxvzj (save 10% with code 'theride')
First Endurance nutrition: bit.ly/41SDgqq (save 20% with code 'THERIDE')
Shimano shoes & glasses: tinyurl.com/ye274tep
Feedback Sports stands & tools: bit.ly/3S9Dq8r
Metadata And Engagement

Views : 31,277
Genre: Sports
Date of upload: Apr 4, 2024 ^^


Rating : 4.966 (12/1,396 LTDR)
RYD date created : 2024-04-25T15:57:03.790966Z
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YouTube Comments - 163 Comments

Top Comments of this video!! :3

@EdZachary1

1 month ago

Dylan like a statue frozen in time..

127 |

@GummeeH3

1 month ago

The narrow bars are all the rage on the road these days and are more aero in the tunnel, but if you watch people riding them in races, their elbows are way out there. Better idea is to go 'normal' narrow so your elbows don't chicken wing in the wind.

10 |

@johnrodgers6049

1 month ago

Also very important is comfort. Yes you can get into a very aero position and have wheels that have less rolling resistance, but it both of those are uncomfortable, it is on sustainable and therefore you will be slow.

11 |

@samj1185

1 month ago

Great vid. While testing a non cycling device at the A2 wind tunnel in NC the technician gave me a freebie bit of aero TT advice. He said from what he's seen, the biggest and easiest aero gain is to simply squeeze your shoulders in as tight as you can. Reduce that frontal area and go faster. Makes perfect sense.

22 |

@SalsaCyclesOfficial

1 month ago

Thanks for sharing this, Ben, and thanks to Silca for helping make it happen. It is all quite fascinating, even for me, who typically doesn't care much about numbers and analytics! There is so much to consider, but the highlights to me are: 1) Aero is primarily of concern if folks are going 18 mph or higher. 2) when aero is of concern, bars (and resulting body position) will most likely matter more than wheel height/wheel depth. At Mid South, the elite of the elite are maintaining 23 mph average. Heck, I'll put you right up there with the elites when you can average 20 mph. But obviously the bulk of cyclists cannot maintain that speed, even if they try. So in my mind that means there are other considerations for them (let's just call it the vast group of riders that are riding 16 mph or slower) that take on the real priorities. My guess is that rider comfort becomes the most important factor for that vast group. Comfort results in the ability to maintain focus, stay on the bike for longer segments, less physical and mental strain, etc. All super fun to consider. I can imagine a 'Whats fastest for an elite rider vs what's fastest for a slower rider' test of some sort. Cheers and thanks again for sharing! -Mike

7 |

@ricmcgillgopro

1 month ago

LAUF for the WIN! Who knew? I got it for the extra bit of suspension and had no idea it would be "more aero" than the standard. Your content and attention to detail are FANTASTIC Ben. Thanks for all you do.

9 |

@SJ-tk4ri

1 month ago

Easily the best cycling content online: you nail it with each and every upload Ben 👍🏼 19:38 brilliant

10 |

@pierrex3226

1 month ago

Very interesting! One thing that confuses people often: rotating mass. It only matters if you brake. If not, then the extra energy you spent bringing the deeper wheel up to speed stays and you get it back when you slow down (intertia). But if you're braking constantly then don't get deep wheels: MTB. It's why a bike with deep wheels can feel like it's steam rolling through ondulating terrain.

6 |

@3TZZZ

1 month ago

Excellent thanks Ben. The most interesting takeaway for me was that for a ‘normal’ gravel rider, someone who inevitably rides at below the 18mph (29kmh) aero speed / benefit threshold, headwind speed is still a major factor. Add 9mph (15kmh) riding speed to a 9mph headwind and you get to the 18mph aero benefit. …and that is not even a windy day.   Clearly aero is a thing, no matter how fast someone rides. …especially relevant, not in terms of winning anything at least in my case :), is that less wattage expended might also equal more than the sum of the parts. IE: less watts expended into a headwind in the first 2hrs of a gravel event is cumulative in terms of human endurance and power and might result in say, a 3-4hr time for the event, rather than a 5hr blowout!   ...The exponential increase in aero benefit at higher speeds, presumably also equates to an exponential saving in energy expended over time at lower speeds into a headwind! …so aero is not just about going fast. For the majority of gravel riders it might also be about surviving the event in reasonable shape = more enjoyment, less pain! Cheers

5 |

@rwb2231

1 month ago

Great video and info. Now the fun begins, how to convince the wife on all the upgrades I need. 😊

8 |

@cakeEATER17

1 month ago

Hell yeah Lauf fork!!! People need to get on board, the bike rocks

5 |

@GerardEncabo

1 month ago

Super insightful. Thanks for sharing this one! 🙌🏻

1 |

@ariffau

1 month ago

This content is a masterpiece! Thank you Ben ❤

|

@chuckfrizzell8668

1 month ago

Very interesting and informative Ben. Thank you.

|

@marciomvp9458

1 month ago

Awesome Ben! Tks

|

@stefanodirector

1 month ago

Great episode Ben, thanks a lot!

1 |

@trwilliams22

1 month ago

These videos just keep getting better and better.

3 |

@jesselove6989

1 month ago

Great videos lots of good info. Thanks

|

@rg807

1 month ago

About 7 or 8 years ago, i switched from the super light (at the time), Mavic climbing wheels, to Enve 4.5s. I then went and hammered my favorite downhill, one that I have the KOM on. Surprise, the Enve's were 4+ mph faster! Granted, my top speed was 52 mph. I never looked back. I then swapped bars a couple of years later from 44s (my shoulder width) to 40s. I was a little worried my breathing would suffer, but too my surprise, again, i could actually breathe better, i think, because i could stretch out further. Then i turned my levers inward a bit. This is a major comfort improvement, and if you haven't tried it, you should. It doesn't take a lot, maybe 5 degrees, but in addition to being more comfortable, you can, again, get even lower. All good!

3 |

@gerryl8310

1 month ago

Excellent! Thx you sir!

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