tvphobic

Looking back on the last few cyclocross seasons, I think the primary thing I want to try differently (other than train more) is run tubulars. Are there any recommendations for a sew-up rim with the right width and profile for 'cross, capable of withstanding bottoming out at 40 psi? This is not really a fresh thread but I can't remember specific rims being discussed. (other than clincher) I see plenty of Mavic Reflex tubular rims out there. Most tubie rims I see on sale now are NOS. My research is pushing me a bit to Sun M19A which is on sale very inexpensively. Damon Rinard among others seem to feel it's a good rim.

jeremyb

where are the m19's on sale?

I bought a pair off of ebay for this, im actually going to run the gel280 front 32 3x and the m19aII or whatever their called on the rear 32h 3x.

mine came in at a good weight as well. plus theyre slightly aero so that should mean they are a little more durable/solid.

reflexes come highly regarded as well, just gotta make sure you get the tubular variety.

jeremyb

tvphobic

Here you go buddy. They're 36h only here: https://www.bikepartsusa.com/product_...?p=01-99C14042
The price is unbeatable I think.

I'm thinking 36 rear, 32 front. I have never bashed a front rim beyond minor truing, I guess it's because I can pull it out of the way. I have on the other hand hopped a concrete bridge abutment too early, coming down on the back wheel, giving it an irrepairable flat spot. That was a big bang.

jeremyb

yeah thats why im going with the lightweight gel280 front and a beafier Sun m19IIA rear. i would have liked to go 36h on the rear, but i really couldnt find a lightweight 36h rear hub. i mean American Classic makes a 36h rear, but seeing as how i got a 32h rear AM classic off of ebay for like $60 and a new 36h goes for $130 i think ill just go 32h and give it a shot.

My wheelbuild should come in just under 1400 grams, which i think is a decent weight. My current wheelset is Mavic CXP20's on ultegra hubs and it weighs 1960gms. So thats over a pound and thats not even considering the lower weight of the tubies over clinchers. So i think it'll make a huge difference in just the weight alone, not to mind being able to run lower pressures with more certainty.

jeremyb

MQracing

I was just going to post re: tubular rims for cross bikes. Glad I saw this thread. Here's my question...

what size (width) tire you guys using? I was thinking say 28 to 30 mm width tubulars. And I kept on thinking that these should be mounted on a wider rim (say approx 24 mm width)...

Do the larger (say 28mm to 32mm) cyclocross tubulars mount up well on a 20mm (the Sun rim mentioned) rim?

thanks,

Mike

tvphobic

I've been clincher so far. Dry days, I have run Vredestein Campo in 30mm. A few times I used a friend's
Michelin Muds II which are labeled 30mm but are definitely wider.

I can't answer the mounting question yet, but I saw some 35c tires on 20mm tubular rims last November.

Soon first-hand research will take the place of hearsay and speculation here.