Velocite filament wound rims

[vmajor]

The pricing is reasonable enough to try a set. Waiting for confirmation of the tubeless model production weight before I order though.

Sorry for the delay, I had to get the confirmations too. We'll update our website shortly but here is the information about the 507 series weights, so far:


Venn 507 TCC: 490g
Venn 507 TCD: 470g
Venn 507 TUC (not final): 410g

Venn Rev 507 TCC: 505g
Venn Rev 507 TCD: 485g
Venn Rev 507 TUC (not final): 425g

Rev (filament wound technology) rims are a little bit heavier for now, but as mentioned we have a solution for a 440g Venn Rev 507 TCD rim that I hope to have available within a few months. Testing and development take time...

V.

[vmajor]

From the FSE thread:

Hi Victor, will the Venn 507 be available in North America later in the year? Will it be available through a distributor? Can you disclose who that would be and approximately when they will be available? I'm interested in a pair of hookless 507 TCD rims in time for the CX season in September.

I think we will be fine with the Venn 507 HTD/HTC (H for hookless) rims as they require a new mold and are in a market segment outside of the agreed ones....but we'll see. The current customer will have priority so if they supply us with a decent forecast/volume it will have to go to them.

...on another note, I just started development of a 76mm profile rim Not sure if we will be able to wind it soon, but I have an idea about solving this, maybe. First step, explain it to the engineers using sketches and hand waving and see what they think. It involves trickery, but it is pretty cool, so it deserves to work just because I think it is cool...or something.

The first version will thus be a hand laid up/machine assisted CTL process. This also means that we will have a "full range" of depths "soon" at least in CTL: 35/50.7/76

The performance objective of the 76mm rim will be excellent aerodynamics at shallow yaw angles, ie. up to 6 degrees yaw, and wide tire casings. This means that it will make for a great track wheel too, and will satisfy most TT/triathlon riding conditions.

V.

[mpulsiv]

The pricing is reasonable enough to try a set. Waiting for confirmation of the tubeless model production weight before I order though.

Sorry for the delay, I had to get the confirmations too. We'll update our website shortly but here is the information about the 507 series weights, so far:


Venn 507 TCC: 490g
Venn 507 TCD: 470g
Venn 507 TUC (not final): 410g

Venn Rev 507 TCC: 505g
Venn Rev 507 TCD: 485g
Venn Rev 507 TUC (not final): 425g

Rev (filament wound technology) rims are a little bit heavier for now, but as mentioned we have a solution for a 440g Venn Rev 507 TCD rim that I hope to have available within a few months. Testing and development take time...

V.

Correct me if I'm wrong, Rev 35 TCC (~430 grams) and Rev 507 TCC (~505 grams) have the same specs for inner and outer width. We briefly discussed the rim profile of Rev 507 TCC as its back to "V" shape after the industry convinced us that "U" shape is here to stay. I would love to see wind tunnel results as you did for Rev 35 or firm statement as to why we should go back to "V" shape. Yes, I have looked at new Envy 3.4 rim profile, rear rim is no longer a true "U" shape, this could be due to weight savings. Nor are they as "V" shape as Rev 507. I would label Envy as somewhere in between, with a naked eye.

[vmajor]

Correct me if I'm wrong, Rev 35 TCC (~430 grams) and Rev 507 TCC (~505 grams) have the same specs for inner and outer width. We briefly discussed the rim profile of Rev 507 TCC as its back to "V" shape after the industry convinced us that "U" shape is here to stay. I would love to see wind tunnel results as you did for Rev 35 or firm statement as to why we should go back to "V" shape. Yes, I have looked at new Envy 3.4 rim profile, rear rim is no longer a true "U" shape, this could be due to weight savings. Nor are they as "V" shape as Rev 507. I would label Envy as somewhere in between, with a naked eye.

Not the same, no.

35 is 27mm wide, 507 is 28mm wide
35 internal is 19mm, 507 is 21mm

I could not make the U shape work with a 50.7mm profile and 25mm wide tires without going crazy wide - over 32mm or so. Extreme width adds weight and can present compatibility problems. So what I did was still use an extended laminar flow airfoil, but sacrificed some performance at the leading edge at tangent, but gained some of it back at the higher and lower portions of the 507 rim, and at the trailing edge. At the trailing side of the 507 rim the airfoil shape is excellent and in simulation at least (good simulation) it generated a very stable wake.

I will have some wind tunnel data later this year, but we already have handling feedback from test riders and normal riders and it is excellent.

[elfuinha]

Hello Victor

Any good news on the 507 TUC...???
WEIGHT AND AVAILABILITY?
THANKS
NUNO

Enviado do meu SM-G935F através de Tapatalk

[vmajor]

Isn't winding meant to remove the variables?

Yes. It removes variables with layup entirely. However, our process uses wet resin not towpreg (preimpregnated carbon fiber tow) so the final resin content is the main source of variation - but it is not permanently variable as it stabilizes once we fine tune everything. Venn Rev 507 rims are brand new to us too. Over time just like with Venn Rev 35 rims the weights will be stable. Mechanical performance remains unchanged however as the variation in resin content is minimal and the amount of carbon fiber does not change, at all.

[BobbySweeting]

Hi Victor,


Thank you for being so candid with all your replies. I'm currently looking at which wheels to have built and one of the UK builders mentioned your rims as being a very good contender for my requirements.

There seem to be comments and reviews online regarding the tech properties of your rims for aero/and award winning construction methods, but (looking at the Venn Rev 35) I can't find much information on the braking performance, especially in real world conditions. I understand you specify brake pads, but how good is the braking performance compared to something like an Alto? As with many people, although my local area and most of the mileage I plan to use new wheels for, will be done in an area of rolling hills, I'd like to take new wheels to the Alps or Pyrenees and wondered how the heat dissipation was for the days when you get stuck behind a slow moving vehicle on a long descent? Even more interesting, how is the wet weather braking performance?

All information is hugely appreciated...

Pete

Hey Pete! I'm new to the forum, but thought I could chime in to answer any questions you may have about Alto. We have an EPS/Silicone molded rim with high compaction, a resin glass temperature of 240 C, and a basalt finish. This means we can spec a higher density Swiss Stop Black Prince pad with our rims without worrying about delamination. That will get you better braking power in the dry or the wet. Our testing includes a 30min brake test at 400 pounds of radial load, and we reach roughly 200 C, well below the onset temp of the resin.

Please let me know if you have any other questions at all. DCR Wheels in the UK can certainly get you set up with an Alto wheel set whenever you're ready!

[Petenats]

Hi Victor,


Thank you for being so candid with all your replies. I'm currently looking at which wheels to have built and one of the UK builders mentioned your rims as being a very good contender for my requirements.

There seem to be comments and reviews online regarding the tech properties of your rims for aero/and award winning construction methods, but (looking at the Venn Rev 35) I can't find much information on the braking performance, especially in real world conditions. I understand you specify brake pads, but how good is the braking performance compared to something like an Alto? As with many people, although my local area and most of the mileage I plan to use new wheels for, will be done in an area of rolling hills, I'd like to take new wheels to the Alps or Pyrenees and wondered how the heat dissipation was for the days when you get stuck behind a slow moving vehicle on a long descent? Even more interesting, how is the wet weather braking performance?

All information is hugely appreciated...

Pete

Hey Pete! I'm new to the forum, but thought I could chime in to answer any questions you may have about Alto. We have an EPS/Silicone molded rim with high compaction, a resin glass temperature of 240 C, and a basalt finish. This means we can spec a higher density Swiss Stop Black Prince pad with our rims without worrying about delamination. That will get you better braking power in the dry or the wet. Our testing includes a 30min brake test at 400 pounds of radial load, and we reach roughly 200 C, well below the onset temp of the resin.

Please let me know if you have any other questions at all. DCR Wheels in the UK can certainly get you set up with an Alto wheel set whenever you're ready!

Hi Bobby,

Thanks for the reply. It's also quite a coincidence as it's Alto's I've finally settled on!

I went to see David at DCR and had both a long chat and a look at some of the stock he has. I've gone for some CC40's (non-tubeless) as I don't need tubeless compatibility made up with some DTSwiss 240s hubs. Although I did toy with the idea of the Alto hub, just couldn't afford the extra cost.

I've heard great things about the rims and the braking performance ,although I did see a photo of one set in bits, apparently following a descent during a sportive in the USA somewhere, but who knows what the real story is there!

I got the message to say they are ready so will be picking them up tomorrow!

Ive got to day it's great to have both yourself and Victor contributing to this forum. Having the designers answer questions directly is a real treat. Thanks.

Pete




Sent from my iPad using Tapatalk

[vmajor]

Hello Victor

Any good news on the 507 TUC...???
WEIGHT AND AVAILABILITY?
THANKS
NUNO

Enviado do meu SM-G935F através de Tapatalk

The approximate weight of the Venn 507 TUC wheelset is 1370g

We have no available inventory, but we can build them to order. Let me know if you would like to order a set.

[vmajor]

Here is a very nice set of Venn Rev 507 TCD wheels with (real) filament wound rims, thanks to Wheel Angel wheel builder of Singapore. Any other wheel builders are welcome to send us photos.

[Krackor]

Hi Victor,

Which distributors are offering Venn Rev 507 TCD (disc) builds? The photo from Wheel Angel looks like a set of TCC wheels, and their website doesn't look like they offer disc builds.

[vmajor]

....not sure actually. 507 are new so only specialist wheel builders have ordered them so far...and OEM rim sales are handled from Taiwan. I'll check our records and will advise.

We do have one set of Venn 507 TCD wheels in Taiwan (not filament wound). They were on that Velocite Syn bike that was filmed by GCN at the Taipei Cycle Show.

V.

[Hexsense]

whoa, that look seriously cool.
thumbs up!

[spartan]

is filament wound rims too little too late.

trek just introduced a new line of oclv carbon all mountain wheelsets. pricing has shocked the industry.

Kovee Elite oclv 23 TLR $700 US MSRP !!!. Enve cost 3x the cost.

trek will soon come out with a road version of these wheelsets.

[mpulsiv]

is filament wound rims too little too late.

trek just introduced a new line of oclv carbon all mountain wheelsets. pricing has shocked the industry.

Kovee Elite oclv 23 TLR $700 US MSRP !!!. Enve cost 3x the cost.

trek will soon come out with a road version of these wheelsets.

How so filament wound rims too little too late? Venn Revv 35 is $899 free shipping worldwide www.velocite-bikes.com/venn-rev-35-tcc- ... heels.html
Zipp and Enve are the ones should be scratching their head.