Fulcrum 1 vs Mavic Ksyrium SL

[encomium]

I have just got a set of Ksyrium SL's but I really like the look of the Fulcrum 1's. So, I was thinking that I could probably get them swapped (or sold on ebay) and get the 1's if I wanted.

I look forward to hearing all your opinions.

[the Inbred]

1s - better hubs/ bearings
SLs - cheaper parts (spokes)

ISO Pulse vs. 2:1 lacing...negligible difference at best. i imagine the 1s are lighter...SLs seem to fall between the 1s and 3s.

[encomium]

interestingly though, the manufacturer specs show that the SL is lighter than the F1

1535 v 1550grams

[rdolson]

Don't know about the Fulcrum's but I have a set of tubular '07 SL3's that I have been very happy with.Only about 1000 miles on them so far, but they seem to be a great all around wheelset. I do a lot of climbing, so a strong (I'm 6' 190lbs) realatively light wheelset was what I was looking for.

[rockstar]

anyone have an update on this versus q?

[Ramjm_2000]

You have to decide what qualities you’re looking for in a wheel; fast, stiff or bombproof. Head to head the Fulcrum’s design is superior in both aerodynamics, lateral stiffness, and in my experience ride quality to the Kysrium design. That said the Mavic’s are relatively bomb proof and you can’t discount the pretty much non-existent spare parts for the Fulcrums. The chart below (From Tour magazine) shows in descending order the wheels aerodynamic efficiency.
Model | Watt at 30/40/50km/h | Moment of inertia in J | lateral stiffness in N/mm | weight/weight limit
Hed 3 4.3/10.1/19.7 129 36/35 1940g/100
Vuelta Carbon Pro WR 4.5/10.7/20.8 108 46/30 1510g/100kg
Shimano WH-7801 Carbon 50 4.9/11.7/22.9 110 78/51 1540g/no limit (recommendation 80kg)
Rose Aerospoke 5.0/11.8/23.0 165 33/29 2450g/no limit
Corima Turbospoke 5.0/11.8/23.1 111 34/34 1645g/no limit
Fulcrum Racing Speed 5.1/12.1/23.7 102 55/42 1350/no limit (recommendation 82kg)
Shimano WH-7801 Carbon 5.3/12.5/24.4 98 64/51 1305g/no limit (recommendation 80kg)
FRM FL-R 23 SD Aerolight 5.3/12.6/24.6 105 53/32 1335/no limit (recommendation 80kg)
Shimano WH-R560 5.6/13.4/26.1 132 58/48 1840g/no limit
Lightweight Ventoux/Classic 5.9/14.0/27.3 88 55/50 1085g/no limit
Campagnolo Eurus 6.0/14.2/27.8 123 61/58 1590g/no limit
Tune Skyline 6.1/14.4/28.1 78 42/28 885g/85kg
FSA RD-600 6.2/14.7/28.7 124 40/33 1650g/no limit
Citec 3000S 6.6/15.7/30.6 127 57/56 1625g/99
Mavic Aksium Race 6.5/15.4/30.0 143 74/48 1965g/ no limit (recommendation 100kg)
Campagnolo Hyperon 6.9/16.5/32.1 97 55/53 1255g/no limit
Mavic Ksyrium ES 7.2/17.1/33.2 120 56/47 1545g/no limit (recommendation 100kg)

[Lookbiker]

Although much maligned in internet forums, my Mavic Ksyriums have been very sturdy and have remained true since 2006. They are great wheels. I'm not sure that the Fulcrums would be much of an upgrade, especially if you lose money in the deal.

I prefer my HED Ardedennes only because they have an almost sew-up like ride. The Mavics are quite stiff in comparison.