Hello, I am the originator of this post. I think that this reply is the most sensible explanation so far, since truncation of the lid wouldnt be more aero except in a situation where the rider was looking left and right frequently and in that case the tail would create a lot more drag than an ITT rider who kept his head still. Anyone who had ridden an TTT knows you have to look around a bunch.
Conclusion is that this is not the next big thing but the customization of known tech to fit the specific needs of TTT.
If it is the next big thing I would appreciate forum members expressing their thoughts so we may all benefit. I am out of training time, but still have a wallet.
"They had it last season as well. I belive it’s made just for TTTs, so they have a little more flexibility to look around. "
BMC is wearing the Bell Javelin, except for Phinney who was using an early prototype Bell helmet which looks much like the Giro Selector with the interchangeable tails, but has one vent at the tail instead of two.
Garmin is using a shorter and marginally narrower version roughly based on the shape of the Giro Selector.
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BMC is wearing the Bell Javelin, except for Phinney who was using an early prototype Bell helmet which looks much like the Giro Selector with the interchangeable tails, but has one vent at the tail instead of two.
Garmin is using a shorter and marginally narrower version roughly based on the shape of the Giro Selector.
Interesting. Do you know if the Giro is something they made just for this purpose? (ie, limited special production run just for this)
I recently bought both a Selector and Javelin to see which might work better. They do look to have essentially the same shape, but there are a few little differences aside from the vents/no vents, closed tail+added-height
I wanted to like the Giro more, but I have to say that the Javelin for some reason seems to fit better. The detachable plastic tail thing on the Giro seems to come apart really easily, once you remove it the first time. I have not tried either yet in practice to see if I can do a field test to see what might be faster. I think I will probably just send the Giro back and keep the Javelin.
BMC is wearing the Bell Javelin, except for Phinney who was using an early prototype Bell helmet which looks much like the Giro Selector with the interchangeable tails, but has one vent at the tail instead of two.
Garmin is using a shorter and marginally narrower version roughly based on the shape of the Giro Selector.
Interesting. Do you know if the Giro is something they made just for this purpose? (ie, limited special production run just for this)
Starting from the 2010 season, Giro has done limited production runs of short tailed TT helmets for the Garmin team.
Can you I would like to know more details about what you perceive are the differences between the Javellin and Selector. I have the Selector and it fits snug, too snug for me (I use a large already) and there is slight pressure on my ears. Moreover, on cool days it is perfect with the visor. On hot days, it is hot and my sweat drips down too much. I am considering the Javellin but only because of those large front vents and . Would be interested to know if the Javellin fits larger than the Selector, if it is cooler, etc. etc.
The Selector does fit a bit tighter on me too. Not uncomfortably tight though. The dimensions of both seem the same, but they have different plastic retainers inside, which is what seems to account for the different fit. The Javelin goes on easier, because the ear flaps are are softer and a bit flexible whereas the Selector’s are harder and don’t bend so much.
As for which is cooler, I can’t help there. I’ve ridden with the Javelin just once (tonight) and it was cool out, and I have the vents taped over in any case. I have to think that with the vents open it would be cooler than the Selector.
My question is whether it’s as aero as the Bell Meteor which I was using. The Javelin definitely has less wind noise, so maybe it;s a better fit. But it’s also wider than the Meteor.
Now that I’ve seen Zabriske ride his stellar TT at the Tour of California, I think I get it about the truncated tail of their helmets. He put his head straight down all the time he could to block wind to his chest. If he had a tail on the helmet, that would have created drag. As it played out, the top of his head hit the wind, blocked air to the chest and was perfect for him.