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Heliums vs. Ksyriums(10 posts)

Heliums vs. Ksyriumsvelo
Oct 8, 2001 2:02 PM
Okay...I want to purchase a set of new climbing wheels at the local flea market next weekend. Price right now is no matter because you can always find a REALLY good deal at the flea market.

I've heard that heliums are lighter than ksyriums, but they're not as strong. But, I don't think that really matters all that much because I only weigh 130 lbs. If I'm going to break something, it would be from hitting something, not from strength. Are the older model heliums really better for me than the ksyriums? What do you think? Help!

re: Heliums vs. Ksyriumskushogun
Oct 8, 2001 2:45 PM
Hey there. Had your same predicament about a month ago. I weigh 142 lbs so I knew my weight wouldn't be a factor either. I spent about a month researching, asking questions, and finally spent a bit more money and got a lovely new set of........
KSYRIUM SSC!!! Boy I am happy with the purchase too! I replaced my old set of wheels, Mavic CXP 23 laced radially to Hugi hubs. Mama Cita what a difference. Ok, the Helium is in a totally different category then the CXP's, but i'll try to shed some light for you. Both the Helium and Ksyrium have the FTS hub which is so so smooth and ultra quiet, even @ 40 mph. The Ksyrium wheels are so so comfy, and literaly pierce through headwinds, something that the Heliums will have problems with (26 and 28 non-aero spokes). The Heliums are a pain in the a$$ to maintain. The spoke and hub combo is rather difficult to tension and the spokes have a tendency to wiggle itself loose. I like the semi-aero factor of the Ksyriums, this more than makes up for any weight difference between the two wheelsets.
Hey, if you want the best of both worlds, wait about another 1.5 months and get the new so so so sexy Ksyrium SSC SL. These new beauties are going to be an astounding 80 grams lighter then the current Ksyrium wheelset (making them lighter then the Heliums), achieved through additional milling to the rim (looks ver very cool too).
If you need some validation to what I am talking about, check out Mavic's website. Also, guess who lives, works, and rides in my very own town here in Kansas? None other than Aaron Walker. Let me clarify, he is the national mechanic for Mavic and went to Sydney and was the head mech for gold-medalist in track cycling, Marty Northstrum. Anyways, after diliberation he explained the difficulties of the Helium, and the overwhelming benefits of the Ksyrium.
In real world terms, I have gained an additional 1-1.8 mph average on my rides, and have increased my top speed nearly 4 mph (descents) on the big hills around my house and an additional 1.5 mph on the ascents. Anyways, hope this helps you out. Good luck in your decision.
riiiiightWoof the dog
Oct 8, 2001 4:19 PM
Ppppffffffff.....1-1.8 yeah right! haha, and listen to this: "additional 1.5 mph on the ascents." The wheels are a great motivational tool in your case, I have to agree, although they are as heavy as anything else out there, and not at all airdynamic. My Speeddreams are (were) lighter by 200 grams and just as airdynamic I am sure. If weight really makes that much difference in climbing, I would have upgraded 5 months ago.

Yes, Ksyriums are a better choice over Heliums, but the gain you describe is a poor reflection of reality, UNLESS you were riding wheels that weighed 5000 grams or something.


Woof the dog.
Self-delusion or nonsense?Kerry Irons
Oct 8, 2001 4:28 PM
These wheels are worth 1.5 mph (2.4 kph) on ascents, 4 mph (6.4 kph) on descents, and around 1.5 mph average? Absolute nonsense! A good aero wheel set (Campy Shamal, Specialized TriSpoke) is good for about 0.4 mph at 25 mph (0.6 kph at 40 kph). This is compared to a 32 spoke standard wheel. Your wheels are not particularly aero but you think they are worth 4X what has been thoroughly tested? And these advantages are at 25 mph - the advantage is less at lower speeds. For a 6% grade, a 1.5 mph speed increase would require a weight loss of 31 lb (14 kg).

You are either deluding yourself in order to better enjoy your new purchase, or you are experiencing a fabulous placebo effect. The latter is only possible if you were really slacking before. An increase of 1.5 mph at 20 mph would require 20% more power. A 1.5 mph increase climbing that 6% grade would require 22% more power.
perhaps you have a point:)kushogun
Oct 8, 2001 5:49 PM
Well it definately seems like I am getting raked over the coals by a non-forgiving forum about the wheels. Ok maybe it was more of a placebo affect than I thought, however, if the wheels increase my avg. speed from 18.9 to 20.2 mph on a consistent basis, then they were worth the psychological boost. A lot of any sport is confidence in your ability, as well as with your equipment. What kind of bike do you have? I am sure you could have spent less money on a bike that gives you the exact same results, and why did you do that? Because you think it may help you perform better, so in the end it does. The power of the mind my friend, never underestimate it.

No hard feelings! We are all here for the same reason, no need to get fiesty..:)
not reallyWoof the dog
Oct 10, 2001 2:37 PM
Funny sh!t, my bike looks so damn nice because I want it to "look" nice, certainly not because I really think airdynamic tubing of my seat tube is going to make a difference. Its a status thing for me vs. those who really think it does make a difference. So, now you see? I use my bike to feel better about myself. I think I need to go to Montreal and get a prostitute or something.


Woof the dawg
Are they better?grzy
Oct 10, 2001 4:04 PM
The prostitutes in Montreal, are they better? ;-b
yes, they are goodDog
Oct 10, 2001 3:14 PM
Ksyriums are great all around wheels. If I could have only one set of wheels for everything, I would pick them every time, in a heartbeat.

They may be faster than standard 32 spoke wheels, but in reality that margin is pretty small. I've read that the difference between standard wheels and very aero deep wheels is only 6 minutes in 500 miles, and the K's are not as aero as most of the deep rim/low spoke wheels.

Nonetheless, it doesn't matter. If you really are going faster, that's all that counts, right?

Self-delusion or nonsense?Birddog
Oct 8, 2001 6:50 PM
Come on guys, don't be so hard on him. He's probably a Rock Chalk Jayhawk and they just won a football game, so he's probably doubly deluded.

Just teasin you Shogun!
Go Jayhawks!!!!kushogun
Oct 8, 2001 7:05 PM
Hey no matter what you think of me, I will always love my Jayhawks! Alright our football team blows, but basketball team will do a little better. Let's not talk about NCAA tournament performance! No i'm not bitter. We have a great team going to Mountain Bike Nationals. Led by Jed Schneider! GO Jed go. I can smell the team title!