Has anyone here done it?
Even if there are a LOT of people out there riding PC’s (myself included), most people still ride fixed cranks. So I am pretty sure you will find someone that has raced IM Florida with fixed cranks.
Oops. I am talking about track-bike fixed cranks with one gear. I’ll edit my post.
I’m assuming you mean Fixed GEAR? and if you were going to do it anywhere, IMFL woudl be the least painful course to give it a try.
Just curious but why? I would imagine the result would be entirely dependent on how windy the day was.
No reason in particular. I’m just wondering if anyone has done it and/or what people would think of somebody doing it.
Very interesting. Would you say your average/normalized power was more constant on the fixed gear?
USAT rules mandate you have both front and rear brakes.
Right, but a track bike can have front and rear brakes.
Thomas Hellreigel, Torbjorn Sinballe and Norman Stadler have set records at Kona on regular bikes (lets not go into Allen, Scott, Tinley, etc splits on their round tube bikes).
I havent seen anyone touch their pace at the draftfest, pancake flat course that everyone calls IM Florida. Maybe its the caliber of pro talent or the mindset for Kona.
Track bikes are good for calculating km/hr based on set gear ratio and cadence. I couldnt see anything else beneficial from that especially in an Ironman race, short TTs for sure though.
I’d ride a singlespeed, but I’d make sure it had a freewheel. I have a fixie that I ride to work fairly often, but like MartinC, I find the most tiring aspect of riding it is not being able to stand and stretch, relieve the taint, etc. Even standing up requires slowing down unless you’re able to hold the same cadence standing up.
I’ve thought about riding a fixie for shorter time trials as a way to force myself to HTFU and not coast…ever. 
I’ve thought about riding a fixie for shorter time trials as a way to force myself to HTFU and not coast…ever.
A buddy of mine PR’ed at our local 10 mile TT on a fixie. Pic taken afterward:
I’ve ridden a couple of 180-200K ride on a fixed wheel bike ~18 years ago. It is possible, however, keep in mind that if it is super windy, one way you will be spinning pretty high RPM and the other way, cranking a lot lower. You may never end up riding in your sweet spot comfort zone (then again, if you do lots of fixie riding, your RPM band of comfort extends substantially…but that does not mean that you end up riding in your optimal RPM range which is likely in a 10 RPM band). Maybe you want to do a few halfs this way first and a few centuries too.
I can’t imagine that it will be any faster than riding a regular geared bike, but if you are just doing it for challenge, why not…
Good luck!
Awesome pic. I think it’s the matching glasses that make the outfit. Or perhaps it’s the socks.
FWIW, I think its a ridiculously stupid idea.