Does anyone have any experience with the Hed Jet disc…?
I’m particularly interested in how stiff it is.
Also, as an all round TT wheel would you go for a trispoke or the 90 as a front…?
The Hed Jet disc is VERY stiff as far as lateral movement. Yet it’s more comfortable to ride than a standard disc. The thing to understand about a Jet disc is that it’s really just a standard wheel with a very nice wheel cover. So it rides like a standard wheel. Still makes a neat sound, though.
I have a Cervelo P4 and it has very limited clearances in the chainstays and at the brakes. Though the flat discs I’ve used clear the stays nicely, on out-of-saddle climbs, between wheel flex and frame flex, I get a lot of rubbing unless the brake pads are set extra wide open. The Hed Jet disc was not supposed to work in the P4 (according to Cervelo). The clearance at the chainstays is only about 2 mm on each side and the brakes barely open wide enough for the C2 rim width. And yet, the wheel is so laterally stiff that it works fine.
I’ve used Renn, Zipp, Fast Forward and HED discs. The HED is like the best of both worlds. It’s the stiffest of them all, laterally, but it doesn’t have the harshness of the other discs because it’s more compliant, vertically. And, if it ever goes out of true, it’s the only one you can true yourself.
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Not sure what the likelihood of it happening is, but what happens if one of the internal spokes breaks??
What do you think happens?
What happens if the sky falls?
Sheesh!
I have it and am really happy with it. I don’t feel any flex or spongy-ness in the wheel. The cover fairing seems to be holding up well too (after 3 years).
As far as the front goes, the drag of the H3 is pretty consistent across the whole range of Yaw angles.
The 90mm front has a much more narrow sweet spot and how big that sweet spot is depends on whether you are using a tubular or clincher wheel (it’s pretty small for the clincher).
you can see hed’s explanation here.
http://www.hedcycling.com/aerodynamics_technology/
What do you think happens?
What happens if the sky falls?
Sheesh!
??
Sorry shit head, I should have been more clear for you. Can it be repaired?
I bought mine for the reasons that Psycholist stated. I am a pretty decent cyclist, but I have had trouble with every disc I have owned or borrowed for flexing too much. I put my money down on the jet disc before IM Canada, and it was the best money I have spent on a bike product in the last few years.
I don’t jump on the bandwagon that easily when it comes to tech improvements, but the flexing disc was something I couldn’t stand, and the Jet solved that issue.
Ouch. That was a bit harsh.
Yes, the Hed Discs can be repaired if they go out of true round and if the spoke breaks. I wouldn’t want to be going downhill doing Mach 3 with my hair on fire when that happens.
I have seen a cover come off during transportation. Not a big deal to put back on though. It’s just a big fairing over the regular spoked wheel.
I suppose my reply to gibson00 wasn’t too helpful. I’m not far from a couple hundred thousand miles since I got into cycling back in the mid-90s and I’ve broken a spoke once. I’m no clydesdale. It’s a non-issue for me.
Damn … I’ve screwed myself now. We all know what’s about to happen and I have my big “A” race in just a couple of weeks.
Damn … I’ve screwed myself now. We all know what’s about to happen and I have my big “A” race in just a couple of weeks.
Nah; you’ll be alright! Luck and RR please…
Not sure what the likelihood of it happening is, but what happens if one of the internal spokes breaks??
I have had a JET Disc for over a year as well- and agree with all the posters- a very, very stiff disc laterally, dead on true- and much, better compared to other discs that I’ve used (Zipp dimpled, Zipp non-dimpled, Old HED Disc - true but flexy, J-Disc, etc). HED builds the wheel with stronger non-aero spokes as compared to their other wheels- obviously non-aero spokes don’t matter because they are covered by the carbon skin. I would imagine opening your brakes a little wider would more than offset any out of trueness from one spoke. And- you should contact HED at -http://www.hedcycling.com/contact.asp for how they would deal with it from a warranty issue- the fixing of the spoke. I have dealt with HED on some warranty issues before- and they have always been very easy to work with and they stand by their products. They also could build you a stallion version of the wheel if you are are big boned.
I have a Stinger and it is pretty much the same story. The only laterally stiff disc I have ever ridden, yet with decent vertical compliance.
As an aside, I thought it was interesting to see Sky rode Stinger 90s and discs in the Giro, except for Wiggins using a tri-spoke/Stinger disc (all with Shimano PRO stickers) Anyone want to a wager either a Shimano buyout of HED, or a cross lisence of HED rims, so they can keep up with the SRAM/Zipp armada?
The German TOUR magazine did a article on wheel drag. The article is in German, but Biketechreview.com has some summary information on the forum. Bascially, the Stinger disc had the lowest drag by a couple watts.
Sounds like they’re pretty good…Thanks
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