Review from 1st hand:
I got the F2 240s ultralight carbon wheelset, 1080g, mounted TUFO 215g tubulars. fitted my TREK madone with them and there we go,....
First impresion: Ultralight bike 6,9kg, loks ok (higher carbon wheels looks better i admit), after 300km impression is just great. I filled tubs with 11 bar and it was ok, then i went to 13 bar, even better! Ride is very smoth so far, pressure is not a problem, I ll try 15 bar on first real trainning route. It feels like ride is smother with tubs inflated to 15 bar than clinchers filled with 9, although i cant explain why?
Plains: It feels like bike goes faster? Maybe just my impression but speedometer actually showed higher speeds on flats, maybe aero spokes are the reason?
Uphill: WOW, these wheels really rooks there. Although I didnt break (yet)my time rekord on the local hill, what really impresses is the acceleration! I just wouldnt believe something like that is possible, on a 6-7% steep climb where speeds are around 14-16 you can accelerate in a moment to 20 or even 22 km/h! Thats just not possible with alu clinchers, i dont believe so, not with the same horsepower on the bike (me lol ). That is really the most impressive thing with these wheels, uphill acceleration, sprinting cost youz alot of power and eat up reserves but hey, who cares, when sprint decides the race you just cant macth 1080g of rolling weight, (maybe with pricey lightweights ). Only think to do is beat my time rekords and go to some races.
Downhill: Downhill is and braking is a part where you lose some compared with alu clinchers, braking is not so good and because of the high pressure these wheels are not so well for the fast descending, speccialy turns with sand on the road could be a problem, i just didnt test that much cos I concentrated mostly on uphill ride.
Stifness: So far, so good, after mechanic had to additionaly put some tension on the spokes on the new wheels, (i guess hand made assembly fault) wheels go straight. I didnt notice any problems at the back wheel although I weight 75 kg, these wheels are not soft! I used Bontrager alu clinchers before, and these are real butter compared to Fast forward F2.
Conclusion: I am very satisfied with the purchase, I even train on them becasue ride is noticably better than with clinchers. these tubs suposibly last 3000 km, so they are not so costly with 45€/each, I like to pay some more for the better feeling. I d surelly buy them again
, I am even thinking of buying F9 for time trails. My advice to everyone who wants to buy ultralite wheels, just go end see and maybe try them! They really impressed me, for the cost around 1000€ I dont think you can get same quality/weight wheels anywhere?
I ll post some more reviews after some race or rekord breaking time lol