marciero

Any suggestions for 40-hole rims? I have a 40-hole Dyad wheelset. The rims are pretty worn but with perfectly good hubs. I have used Dyads a lot on different bikes, but grown a little weary of them. My main complaint is that tire fit is too loose and they dont seat Compass, or other tires with supple casings, very well. Very difficult to seat without hops in the wheel. I fear it's too easy for the bead from safety perspective. They are also a little clunkier than I need. All the other Velocity 40-hole rims are even heavier and clunkier. A23 would be an option but dont see them in 40-hole. Also, ideally I want 25mm or at least 24mm width. For front I have a 32 hole Schmidt dyno hub and plan to use Pacenti or Hed Belgium, so that is the direction I am heading. I may just buy a 36-hole hub which gives me more options. We do some light touring on this bike so will not go lower than 36.

fietsbob

My 80's Touring wheels, were 40 front (Specialized hub), 48 rear ,( Phil Freewheel hub)

Rims; Mavic Mod 4. tire was often Michelin High Lite tour 35.. Now a Sun Rhyno, [They're not Rhyno light].
& Bullseye tandem hubs

Sun CR18 seems used in all sorts of configurations.. running 406 - 47 Schwalbes on my Bike Friday..

nfmisso

In 622 size, the Sun CR-18 is about 100g heavier than the Velocity Dyad.

On our tandem, we're switching from 40h Dyad to 48h NoBS rims; to get a bit more rim width, and deal with a rather heavy captain.

Look at your front/rear balance before deciding on relative spoke count. On our tandem, even with loaded panniers, we are rather front heavy because of our major weight difference. We are currently run the 48h NoBS rim on the front with a 40h Dyad on the rear - works well. I have to build the 48h NoBS for the rear - just need to find time. The 40h Dyads are going on a single bike.

twocicle

Pacenti is ok for a single bike, but they build them a little too thin to be durable on a tandem. I asked Fairwheel about Pacenti vs Kinlin/BHS for tandem usage and the recommendation was to go with the latter.

I've used and recommended the $48 Kinlin XC279/BHS C472w rims for a couple years and have yet to hear of any issues. All good reports. Note they do have a pinned seam which makes a little tick noise with rim brakes, but pinned usually makes for a stronger rim as there is no weld heat that can weaken a rim.

That said, plenty of lightweights like and use the much more expensive Hed Belgium, but I doubt you'll find any recommendation to use those for loaded touring.

Carbonfiberboy 

We're also running the XC279 rims and are extremely happy with them. They are available in many drillings from 20H to 36H. Fine for loaded touring.

marciero

Thanks for the replies.
As far as the spoke count on front goes, I have been riding on the 32-hole Schmidt laced to dyad because that is what I had on hand for 700c dyno wheel. The intent with this bike is lights as permanent fixtures. I've used it with no issues for several thousand miles. Ideally I would probably have used a 36-hole hub, but with an Ortlieb handlebar bag as the only load on the front I am pretty comfortable with 32. (Team weight is about 280)

Similarly, the Belgium plus is something I have on hand that I would lace to the Schmidt.
I did look at the Kinlin and it looks like a good choice for rear. Again, I would need a new hub for that as it seems they do not offer 40-hole drillings to match the current hub.

On the other hand, I already have a set of DT Swiss 535 36 hole rims so if I dont get a 40-hole rim I will just lace one of those to a suitable rear hub. (Those rims were take-offs, sort of. I built the hubs they were laced to to a set of Aileron 650b rims for our other tandem)

zonatandem

We are using Topolino carbon fiber spoked alu rims and Topolino c/f hubs. 22 front and 30 rear.
A bit of unusual spoke pattern but works great for us at a total team weight of sub-250 lbs.
Have over 30,000 miles on the same type of Topo wheels on my single bike.
Too bad they are no longer being made!
Pedal on TWOgether!
Rudy and Kay/zonatandem

twocicle

Too bad? Are you kidding?

There's a good reason Topo went under.

marciero

Speaking of unusual spoke patterns I even considered using the parts I have and lacing the 40-hole hub to the 36 rim. Despite being comfortable working with the mathematics involved I decided against it, at least for the time being. There is an article with one example on the Sheldon Brown website.

zonatandem

Topo did not 'go under',
It was bought out by a competitor who did not want the competition . . .
Anyhow, best wheels I've ever owned in over 300,000 miles of cycling .

geoffs

I'd be looking at Velocity Cliffhanger for the 40 hole rim. wider rims give tyres a much better shape.
The Hed Belgian C+ is stronger than the Kinlin which is much stronger than the Pacenti.
I've built up a lot of the C+ rims and found them to be excellent. It's my rim of choice for clydesdales and superstrong riders.
The most recent wheelset i've built has been using 36h Blunt 35's on a CK rear hub and a Shutter Precision PL-8X built up with Sapim Strong spokes We've just come back from a 5 week tour in Eastern Canada and they were a good match for the Schwalbe 2.0 Supremes

ahultin

You did not state whether you use disc or rim brakes but we are having a 700c disc wheelset built up with the 40h velocity aileron. We are currently using the aileron in a 650b in 32h with a 42 marathon supreme. it is light, stiff and built up very nice .

marciero

I am using 32 tires on this bike so 35mm rims probably too wide. I suppose Cliffhangar is one idea for rear. As far as Belgium, are you referring to Belgium C2, or Belgium Plus? The latter is the wider one, at 25mm vs 23 for the C2.

marciero

This bike is rim brake.

I got the 650b Ailerons as soon as they became available in April and built them on 36 hole hubs on our disc brake Cannondale. They have been great so far. Have keeping an eye on them for cracking since I they are on the light side and were not specifically listed as tandem rim on the Velocity site. We probably have about 500 miles of mostly gravel roads on those, with 42 Compass tires. Though they are marketed as aero for narrower tires, the deeper profile makes them stronger. They also look great! And available in 36 or even 40 hole. In either 700c or 650b what's not to like?

twocicle

If you say so.

FWIW, anyone who wants more background on Topolinino wheel problems, this is one source to review: https://tandemgeek.wordpress.com/201...hen-it-breaks/