Check it out…I wouldn’t use it for an ironman cos no front vents but for TT’s it has tested really well so I hear, in the wind tunnel…(it had the words Limar on the side too but I scraped them off)
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Looks cool. If you get the chance lets see a photo of it on your head as this is where the current general crop look terrible.
Happy to oblige…luckily my sister is at hand to do this…
Got it mail order from Parkers International in your country!!! Bought quite a few things from there…incl. my new Corima disc, Vittoria tubular tyres (Corsa Evo CX) and other stuff I can’t remember now…
Yep still looks pretty cool.
I run the same disc/tub combo you’ve ordered. The evo is good but wears quick so don’t use it on a turbo to warm up.
Very cool but I want the Selev Chrono.
Dave in VA
What a coincidence!
…the Corima is stiff as f***k isn’t it?!
Bloody hell, I put about 140psi on it the last TT I did and I learned my lesson…it’ll be 120psi max next time…it was like riding with a Flintstone stone wheel…it’s a fast disc though, I did a good time with it…well, for me, that is…
I took all the yellow Corima word stickers off it cos it looks crap with my all black bike…the Liberty Seguros boys use Corima by the way…as you probably know…any comments on the disc?
A good disc although I find their quality standards aren’t quite as high as say a Renn. What I mean by this is that the rear trueness varies from product to product and can be big. It is stiff and well made though. I race with 170PSI in the rear (not ass friendly). I debadged mine as well. I will be getting a Renn later in the year but this is only because I want a clincher disc for IM next year.
I had a RENN Madeira ordered but as the time of production was beyond our TT race calender I had to look for another disc…and the Corima was a good price…
…as I have ZIPP 404’s I wanted a carbon brake rim so i wouldn’t have to keep swapping the pads as well…though aluminium brake rims are better for braking…
Dunno about the tubular v clincher issue…I don’t notice the difference between the two types of tyrse to be honest…
…for example, the Continental Force and Attack are by far the most comfortable tyres I have used - I would recommend them for your Ironman for sure!!!..though these tubular Vittoria Corsa Evo CX feel just as good…
I’ll probably go Michelin pro races as a clincher as i have a solid history with them although the continentals are a good price over here at the moment…
Happy to oblige…luckily my sister is at hand to do this…
I hope you don’t mind me mentioning this Stephen but your sister is rather masculine looking, not what I imagined at all!
Seriously, I like the Force/Attack combo but wonder which to buy and pack as a spare. Although as I have installed Panaracer flataways it a mote point.
heh heh heh…good one jk
…if you have ZIPP 404 clichers for example, use Michelin cos ‘joshatzipp’ told me they’re that fastest clinchers they have ever tested with the ZIPP clicher wheels…the Michelin carbon wotsit ones
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Bloody hell, I put about 140psi on it the last TT I did and I learned my lesson…it’ll be 120psi max next time…it was like riding with a Flintstone stone wheel…it’s a fast disc though, I did a good time with it…well, for me, that is…
Tell me about it - last year at the state time trial championships, I decided to mount Tufo tubulars (20mm) on my Renn disc and then inflated the tires to 160 psi (works great on smooth roads)! Argh - the course was closed to eveyone but those who were on the clock and come to find out while I am on the course, that the road had recently been resurfaced with what in Texas is referred to as chip seal (or chip n’ seal) in which a road crew pours thousands and thousands of crushed up rocks of small to medium size onto the road surface and follow that up with a coat of some type of oily sealant. After about a year of constant traffic, the road surface smooths out but the TT was in a rural area with very low traffic volume and although the ride was fine for cars, on a bike with tires inflated to 160 psi? At one point I seriously thought some of my fillings were going to come loose from my teeth and up until that event, I had never heard my TT bike (TCR Aero) make such alarming noises!
From joshatzipp…he’s a great guy, always willing to offer advice…a true statesman of this forum!
Higher pressure is definitely slower on anything other than perfect surfaces. Think of it in terms of a bunch of 1mm tall bumps in the road. If you have a lower tire pressure, the casing of the tire will deflect over each bump (we’ll assume the casing deflects the entire 1mm) converting a small amount of energy into heat as the casing deflects, but the amount of energy necessary to compress the air is almost nonexistant. Now at a higher pressure, we will assume that the tire deflects half as much. Now the bike and rider are lifted by 0.5mm and the casing deflects by .5mm, the energy necessary to deflect the casing by .5mm is less than it takes to deflect it by 1mm, but is nothing compared to the amount of energy necesary to lift the bike and rider by 0.5mm, so the end result is that the the total energy requirement for the high tire pressure condition is much greater.
The other thing that happens is that on smoother roads, high tire pressures keep the casing from deforming over and into small cracks and crevices and over pebbles, which means that some of the deflection is transferred into the tire tread, which is not as elastic as the casing. Excessive tire wear comes about as the tire rubber begins to fail in shear as it is deforemd by the road surface, and this generates heat as well as breaks down the crosslinking within the tread material…overall, you are using more energy to go slower and you’re wearing your tires out faster. The problem, is that high tire pressures feel fast as your body perceives all the high frequency vibrations from the road surface as being faster than a smooth ride. Lennard Zinn had a great analogy when he said that 100kph in a Jeep will scare the crap out of you but 200kph in an S class mercedes feels effortless…the same is true of bike tire pressures, but it’s just hard to convince ourselves of that. As athletes we tend to buy into the ‘if some is good, more must be better’ philosophy, but this is rarely true. Of course the tire manufacturers have given up on this and continue to try and make higher pressure tires as that’s what the consumers demand, as I think that they’ve decided that it is easier to just give people what they think they want than to try to educate and argue with them 
When I asked for a tyre recommendation for my Corima disc:
The Corsa evo CS will be perfect for that wheel, and I would recommend 100-125 psi (6.9-8.6 bar) depending on your weight. You will want to run 0.2-0.5bar more in the rear than the front to account for weight bias. I personally weigh 155lbs (70kg) and run my tires at 105 psi front (7.2 bar) and 110 psi (7.6 bar) in the rear. When I was racing and lighter I ran them at 100/105, but now that I’m heavier it is safer to run a few extra psi and I may go even higher on bad roads, which has worse rolling resistance, but better protects the wheels from damage in the event of hitting a pothole or something else which could damage a rim or tire. The better option is to run a wider tire at lower pressure on rough roads, but that is just not always feasible, so I would rather have higher rolling resistance and protect the wheels than lower rolling resistance and increased risk of damage to the wheel.
"Happy to oblige…luckily my sister is at hand to do this… "
Can you post pictures of your sister wearing it (for SAS, he feels lonely over there in the desert) ?
That was his sister! She’s uhhhh…beautiful. A rare beauty with a hardened but sleek appearance.
Hey Stephen
Man I tell ya you Euro dudes are so lucky to have all of the new TT helmet to choose from! The Bell, the Giro the one you just got. All we get it the LG. I’m tell’n ya you should start an import of TT helmet business.
Bikedude
A.K.A Dan
Hey Dan.
Well, it seems the US reckon American heads are different from European heads as the testing standard is different…can’t figure out why they can’t let Euro tested helmets be used over there…after all, all the major races are in Europe for cycling so…good to hear from you Dan.
I originally wanted the Bell or the Giro but they’re out in September more or less and the Uvex one is €325 so too expensive…I was told this one and the Specialized helmets tested really well in the wind tunnel in a comparative test…
Over to you Jason…