39x17 oh yeah.
So due to axle issues with the infamous Suzue Junior hub, I'm not riding my normal wheel. I don't have a lockring tool so that means my normal 15 tooth cog is stuck on the unusable wheel. I do however have a suicide wheel ($10 road wheel with campy hub and tubular rim, the person who sold it to me had it setup as a suicide wheel, i got it for road use, or at least the hub.) with a 17 tooth cog. So last night I took it for a spin to get out and to make sure I wouldn't have any surprises on my way to work this morning. Talk about spinning.
The quick acceleration is nice, but the top speed isn't. Oh well, I'll hopefully get a new axle (And lockring tool while I'm at it) tonight, so I'll be back to my normal (still spinny) gearing.