Aero Helmet

Discuss light weight issues concerning road bikes & parts.
hlvd
Posts: 281
Joined: Sat Mar 05, 2016 4:54 pm

by hlvd

So, after the impressive reviews on this thread I've just ordered a Ballista, looking forward to trying it out!


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demoCRIT
Posts: 56
Joined: Sat Jun 01, 2019 3:04 pm

by demoCRIT

demoCRIT wrote:
Mon Aug 12, 2019 8:32 pm
after reading comments i went online and ordered Evade 2.
Will comment back after some weekend rides with it!
(for what its worth it's around 30* outside currently)
so did a 4h ride and some intervals.
Helmet is super comfortable and kinda silent (vs my previous non-aero one).
Straps are tight, all sits in very comfy altho its not light - 284g.

so far so good.

ps.
I went after MIPS - that was one of deciding factors for me

by Weenie


hlvd
Posts: 281
Joined: Sat Mar 05, 2016 4:54 pm

by hlvd

demoCRIT wrote:
demoCRIT wrote:
Mon Aug 12, 2019 8:32 pm
after reading comments i went online and ordered Evade 2.
Will comment back after some weekend rides with it!
(for what its worth it's around 30* outside currently)
so did a 4h ride and some intervals.
Helmet is super comfortable and kinda silent (vs my previous non-aero one).
Straps are tight, all sits in very comfy altho its not light - 284g.

so far so good.

ps.
I went after MIPS - that was one of deciding factors for me
You got the Evade 2?

I might have gone for that if it was cheaper but it's about £70 more than the Ballista.
Last edited by hlvd on Thu Aug 22, 2019 11:50 am, edited 1 time in total.

demoCRIT
Posts: 56
Joined: Sat Jun 01, 2019 3:04 pm

by demoCRIT

Yes, Evade 2 in black (so the specialized logi is somehow less visible)

ichobi
Posts: 969
Joined: Thu Jan 19, 2012 11:30 pm

by ichobi

I don't find Evade 2 hot at all and am riding in tropical climate. It's not as airy as climber helmet with lots of vents but wayyy better than most aero road helmet.

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Hexsense
Posts: 946
Joined: Wed Dec 30, 2015 12:41 am

by Hexsense

I find Evade 2's ventilation somewhat head shape and hair dependent.
Since it rely heavily on internal front to back running channel. And the channel is quite shallow (compare it to Scott Cadence Plus which has much deeper channel and more universally agree that it is effective). Certain head shape with hair can significantly reduce air flow effectiveness.

nismosr
Posts: 1132
Joined: Mon May 05, 2008 5:15 pm

by nismosr

What about the Abus Gamechanger anyone here have them ?
- 2018 Colnago V2-R TNMR - Campagnolo SR EPS - Lightweight Gen III - P2Max
- 2017 Colnago Concept CHDB - Campagnolo SR EPS - Bora One 50 - Deda Superzero - Stages
- 2015 Cipollini RB800 - Campagnolo Athena EPS - Bora One 35 - P2Max

happyon2wheels
Posts: 110
Joined: Wed Jan 31, 2018 8:17 am
Location: Denmark

by happyon2wheels

I have both the Bontrager Ballista and the Abus Gamechanger, which I use for my general road riding. I like both helmets but with the edge to the Abus.

One differences is the weight (both size Large) with the Bonty at 300g (but with MIPS) and the Abus at 270g (without MIPS). For my head the fit of the Abus is better and the straps sit a bit nicer around the neck and chin. The Abus has much smaller outer dimensions and is very non-mushroom compared to the Ballista.

In terms of aero advantage I can only say what it FEELS like and here I think they are equal and seem to slice the wind just the same in all head tilt/turn positions. The Abus is perhaps a little better ventilated and the sweat seem to run away from my face rather than into the glasses. Compared to my Giro Aeon both aero helmets have significantly better sweat drainage (if that's a way to describe it) and even on hot days I pick either one over the Aeon.

hlvd
Posts: 281
Joined: Sat Mar 05, 2016 4:54 pm

by hlvd

So, got my Ballista today and had a short ride tonight to try it out.

Took a good thirty minutes to adjust the straps to where I want, but got there in the end...

The helmet sits nicely on my head with plenty of space for my Oakley’s arms and also sits low on the forehead with minimal gap between glasses and helmet.

It’s a much larger helmet than my Velocis but feels nice and secure in place and although there’s quite a bit of weight difference in hand, I didn’t feel it when riding.

I’ve no idea how aero I was tonight but it felt great with a surprising channel of air being pushed through the three front vents.
This was something I wasn’t expecting and had a pleasant cooling effect not experienced on my other helmets.

All positive so far except for maybe the straps.


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Last edited by hlvd on Wed Aug 28, 2019 10:27 pm, edited 1 time in total.

moyboy
Posts: 447
Joined: Thu Aug 18, 2016 12:19 am

by moyboy

I own the gamechanger too, and find ventilation is great on it. I was surprised seeing as it's an aero helmet. pretty dry forehead after a ride....
happyon2wheels wrote:
Thu Aug 22, 2019 10:33 pm
I have both the Bontrager Ballista and the Abus Gamechanger, which I use for my general road riding. I like both helmets but with the edge to the Abus.

One differences is the weight (both size Large) with the Bonty at 300g (but with MIPS) and the Abus at 270g (without MIPS). For my head the fit of the Abus is better and the straps sit a bit nicer around the neck and chin. The Abus has much smaller outer dimensions and is very non-mushroom compared to the Ballista.

In terms of aero advantage I can only say what it FEELS like and here I think they are equal and seem to slice the wind just the same in all head tilt/turn positions. The Abus is perhaps a little better ventilated and the sweat seem to run away from my face rather than into the glasses. Compared to my Giro Aeon both aero helmets have significantly better sweat drainage (if that's a way to describe it) and even on hot days I pick either one over the Aeon.

robeambro
Posts: 616
Joined: Sat Jul 07, 2018 6:21 pm

by robeambro

I hear a lot of people/articles saying that aero helmets save quite a few watts.. However, if I look at one of the few (arguably independent) comparison tests, there doesn't really seem to be much difference there. I know most of you guys will roll their eyes seeing it's Cycling Weekly but the guys who actually tested them are extremely anal about aero, so I kinda trust the results..

https://youtu.be/M7JtY00HVo4?t=312

Or, am I missing something?

TobinHatesYou
Posts: 4289
Joined: Mon Jul 24, 2017 12:02 pm

by TobinHatesYou

robeambro wrote:
Fri Aug 30, 2019 10:19 am
I hear a lot of people/articles saying that aero helmets save quite a few watts.. However, if I look at one of the few (arguably independent) comparison tests, there doesn't really seem to be much difference there. I know most of you guys will roll their eyes seeing it's Cycling Weekly but the guys who actually tested them are extremely anal about aero, so I kinda trust the results..

https://youtu.be/M7JtY00HVo4?t=312

Or, am I missing something?

Were you looking for a miracle? They tested a Met Trenta 7.7W faster than a Kask Infinity at 40km/h. That's significant, and it's free. The Trenta, while ventilated, is advertised as being very aero. At 50km/h it's 15.1W faster. Caveat is some aero helmets are bad, and some ventilated helmets are quite aero. Some helmets are better at different angles than others. In general though, one of the easiest ways to make a fast helmet is to make it less mushroomy. The Met Trenta and Specialized Evade II are quite svelte. The Vanquish is pretty mushroomy, so I'm pretty impressed that it nearly matched the Trenta.

robeambro
Posts: 616
Joined: Sat Jul 07, 2018 6:21 pm

by robeambro

TobinHatesYou wrote:
Fri Aug 30, 2019 10:35 am
robeambro wrote:
Fri Aug 30, 2019 10:19 am
I hear a lot of people/articles saying that aero helmets save quite a few watts.. However, if I look at one of the few (arguably independent) comparison tests, there doesn't really seem to be much difference there. I know most of you guys will roll their eyes seeing it's Cycling Weekly but the guys who actually tested them are extremely anal about aero, so I kinda trust the results..

https://youtu.be/M7JtY00HVo4?t=312

Or, am I missing something?

Were you looking for a miracle? They tested a Met Trenta 7.7W faster than a Kask Infinity at 40km/h. That's significant, and it's free. The Trenta, while ventilated, is advertised as being very aero. At 50km/h it's 15.1W faster. Caveat is some aero helmets are bad, and some ventilated helmets are quite aero. Some helmets are better at different angles than others. In general though, one of the easiest ways to make a fast helmet is to make it less mushroomy. The Met Trenta and Specialized Evade II are quite svelte. The Vanquish is pretty mushroomy, so I'm pretty impressed that it nearly matched the Trenta.
Not for a miracle but for some kind of consistency. When you buy an aero frame you may not get the best performing (eg. Ridley Noah) but you can still be assured it will be all-else-equal faster than a more traditional frame. With helmets, it seems to me that such consistency doesn't exist, and if we add that it's all system-dependent (ie a fast helmet for me might not be fast for you) then how are people supposed to choose?

TobinHatesYou
Posts: 4289
Joined: Mon Jul 24, 2017 12:02 pm

by TobinHatesYou

robeambro wrote:
Fri Aug 30, 2019 11:05 am

Not for a miracle but for some kind of consistency. When you buy an aero frame you may not get the best performing (eg. Ridley Noah) but you can still be assured it will be all-else-equal faster than a more traditional frame. With helmets, it seems to me that such consistency doesn't exist, and if we add that it's all system-dependent (ie a fast helmet for me might not be fast for you) then how are people supposed to choose?

Yep, you pretty much have to Chung-method as many helmets as you can be bothered to compare if you want numbers. If you don't want to do the math, measure the frontal area. The Trenta looks good and is ventilated. I tried very hard to make it work for me...alas I just fit Giro and Bell helmets better.

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alistaird
Posts: 202
Joined: Thu Jul 21, 2016 8:21 pm

by alistaird

Just started using one of these - wonderful fit and preported to be aero...

https://hexr.com

Not cheap but protects, ventalates, fits and hopefully aero - but not at my speeds :-)

A

by Weenie


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