diff_lock2

Check the periodic table of elements, or a spec sheet on the element Al.

Also most Al alloys are solid at room temp, so you should assume they are frozen.

idiq

When I said 'freeze' I meant quite literally, as in, sticking it in the freezer. However, based on your reply, I infer that doing this would not 'shrink' the metal at all? Perhaps instead their processes involves heat-shrinking? Not the authority on this, as is obvious by now, but there is some sort of 'shrinking' process involved.

blickblocks

Freezing is the process of going from a liquid to a solid. Aluminum melts at 933.47 Kelvin.

I was just trying to be a jerk.

edit - wrote freeze instead of melt.woops

idiq

Oh I see what you've done there.

raster

I heard Velocity sublimates their rims during the lacing process.

diff_lock2

idiq, are you saying they chill the rim (making it shrink a bit) then lace and tension the spokes?

Thats what I understood.

idiq

Yes, I was saying that they shrink the rim, and I was under the impression that the process to do such was chilling the rim to make it condense. Once the rim has been laced, they let it cool down, to normal temperature. This allows the rim to expand to the 'normal' size, and increases the tension.

Were you saying, 'assume they are frozen' as in, that would be the process that they undergo? I read it as, "Since they're solid at room temp, they're frozen in that state. Ergo, freezing them (chilling) would have no effect on the metal." Which is why my post subsequent to yours says what it says / reads how it reads / etc...

NNNN

No, they get Prince circa purple rain to sex it up a bit so the rim melts, then they ship it to Siberia and force it to drink vodka in the snow for a month. then they lace it up, and send it to rehab to get all straightened out.

Jabba Degrassi

I hear they dump their rims in the wilderness when they're still children with nothing but a loincloth and a spear. Most die, but those that are able to survive and make it back to the factory are then laced up and sold.

4zn_balla

which part is the private part that the loin cloth covers. I should probably be courteous with my rims so that no one is offended.

idiq

This thread is out of control. Like my cadence.

moz138

i heard deep v's were stronger because they were forged in the flames of chaos. like the devils pitchfork.

Jabba Degrassi

The nipples, duh!

frankstoneline

one rim to rule them all...

skeem

deep v is just a design, hell they even make deep v bras and **** (look up deep v on ebay- sexxxy). dt makes some nice deep v rims and mavic did and you can still sorta get em. myself and another mechanic at work agreed that for the price we can get velocity's for, 33.50, its worth it over other brands (for street riding and abuse). im, in fact, going to build up velocity's on my new paul hubs when everything comes- paul called me and said things are a bit backed up. though its so stereotypical of fixed gear bikes to have deep v rims, they are one of the best types of rims for street use because they last a LONG time. hell, who does zipp and mavic make rims with like 60 mm deep v carbony rims- because theyre strong and use shorter spokes. oh, and i think when i build my wheels ill do it in a meat locker or just blast the AC and hope to have mavic-esque wheels.

krusty

Gerd Schraner's book "The Art of Wheelbuilding" talks about rim profiles, and he makes mention of the fact that the deep V can handle far higher spoke tension, which in itself means the design is inherently stronger. He believes that the deep V profile is the only one to consider for general road use, and that a shallow profile rim is not strong enough, even with a high spoke count. I think I would tend to believe someone with his experience.

sfcrossrider

They must. I've had a pair of Arrowhead, tubulars laced to Record hubs for five years. Five years of brutal cross racing, and trail riding.... I think I've trued them three times.

Velocity makes great products. It isn't their fault they've become a pop-culture icon.

deadforkinglast

If Deep V's are so strong, why don't cyclocross riders use them? At 19mm, they're wide enough to handle cross tires, but I've never seen anyone ride one off-road. A few friends of mine have had problems with the metal in the deep section (the colored part) being soft, leaving them with dents and deformities in that part of the rim, making it very difficult to get true.

Mavic Open Pro rims really only cost about $10 more than Deep V's, and they win in strength, weight, quality (double eyelets FTW) and, IMO, style. When I started building my wheelset, I was struck by how true the rim was out of the box, no spokes. DT Swiss rims are like that, too. Can't say the same about Velocity, in my experience.

I have heard that their quality has declined in recent years in order to keep up with the massive demand.

DaHowie

Cryogenic treatment of metal is known to increase metal strength, but mostly for surface wear,

krusty

They do, just not as much in North America. In Europe, plenty of 'cross riders are starting to use deep section carbon rims instead of aluminum. Why? They are plenty strong, and the aero profile sheds mud better than a box section. Deep carbon rims are also much easier to find than aluminum. They are certainly not using them for any aero benefit.

In the era of the weight weenie, deep section aluminum has largely fallen out of favour, except on the track, where weight means much less than strength.

frymaster

+1

aluminum is frozen at any temperature less than 660c.

onespeed89

I just bought a set of 32 hole IRO hubs for $30 off their website, im now considering lacing them to a set of these rims ($27/each ) which would make for a great wheelset (around $110 for the set) which seems like a great wheelset for college/around town.

deadforkinglast

I meant Velocity Deep V's specifically. I should have been more specific.

bbattle

Polish them up with some car wax and they really gleam! I love the CR-18's on my Sprite.

dmg

33's are lighter and arguably nicer looking, but definitely aren't as strong. I have a (handbuilt, by me) deep v front wheel and a cxp33, and I've had to true the 33 a couple of times just from potholes and the standard junk. The deep v didn't need to be trued at all past the initial tensioning until I went over the hood of a car that turned in my path at like 15 mph, and has been fine since then. The weight is a little onerous but they're definitely the toughest rims I've used and you can tension the spokes to high heaven without worry, even if they don't have eyelets.