ridenfish39 wrote:
Was looking for the PO9 thread but couldn't find it. If you're a pretty fast tter, should you leave the vent plug in or take it out? I've seen conflicting info on this. I have the hole taped over now(lost the plug) The LG seems to have lost popularity to the new Giro Aerohead.
From an older post about the PO9:
Jim@EROsports
Jan 23, 14 13:04
Post #53 of 408 (6877 views)
No one had the Split, but my work with Luke McKenzie seemed to confirm it's a fast helmet. The P09 worked on a broad range of riders - more so than most helmets. I don't think it really hurt anyone. It tied or bested the McCLaren on the few riders who tested both. Back in June/July we tested a prototype and found it faster without the visor. We also only tested it with the vent plug out, and at the speeds some of the campers were riding, it would've tested better with the plug in based on our previous testing (we didn't have a plug).
ps......I've had mine for about two years now. Usually keep the visor on and plug in my OLY distance racing....took plug out and visor off for a couple of high heat IMs and HIMs.