head tube length?

[johntimber]

Hello,

I'm looking to buy a Felt F1 frameset but am holding back a little as the head tube length seems infeasibly short.
I'm currently riding what would be classed as race geometry but this as a 145mm head tube cf 120mm on the Felt F series bikes. I already use a couple of spacers and am a bit worried I'd end up with loads if I got the Felt.
So, could anybody with an F series Felt bike comment on whether these bikes do have abnormally aggressive geometry, or if they are pretty much comparable with other race geometry bikes.

Please help

I didn't find the right solution from the internet.

References:

tech.lds.org/forum/viewtopic.php?t=16148
Video content company

Thank you