YoKev

I just finished building my late 70's Woodrup Giro back up, this time with a Centaur 3x10 drivetrain shifting via the good 'ol Suntour barcons. After many different builds on this frame, I think I finally nailed it

2016-11-11_03-40-14 by [url=https://www.flickr.com/photos/93993596@N04/]

2016-11-11_03-39-45 by [url=https://www.flickr.com/photos/93993596@N04/]

2016-11-11_03-56-33 by [url=https://www.flickr.com/photos/93993596@N04/]

noglider 

@Sir_Name did you have to make any modifications to your International to get the 650B wheels to work?

Sir_Name 

Well, gugie was the previous owner and he did a good number of modifications to the frame and fork. The only mods for 650b were brazing on canti posts. The rear brake bridge was removed/moved a la Weigle, so I can't measure the original reach for center-mount brakes, but I'm guessing some long centerpulls like Raids or similar would get the job done. ~43cm rapid taper chainstays (<-not my content) allow for 42mm tires (though I still have 38s installed until they're used up a bit more). Guessing your '74 would make for a nice conversion if you can get brakes to reach, though 42s may or may not happen - 38s are great, so don't let that discourage you.

Edit: Looks like before the mods 650b worked with Dura Ace centerpulls, though I'd still measure reach to be sure.



Nice Woodrup @YoKev!

noglider 

OK so I was thinking the same things. I think you are implying that my chain stats are longer than yours, and it is probably true. I'll verify. I would be fine with 38s. I had them already and liked them a lot. I believe Weinmann 750s would fit here, too, and that may be OK for me. Or I could use 80mm dual pivots.

noglider 

What's a light 650b rim I could build into wheels? I like building wheels for myself. When I go cyber shopping I see rims intended for MTBs and don't which ones would work for me.

Sir_Name 

Velocity Synergy have been great for me, I've had two wheelsets with them and built one of those. Wouldn't call them light necessarily. They've been bomb-proof under my 200#+ heft over some rough terrain. Easy to build with. Pacenti also has a 650b rim that I've heard/read good things about. Other options as well.

Chainstay length seems to vary for Internationals depending on year and whatever else was going on at Raleigh. If the internet is to be trusted it seems odds are yours doesn't have the rapid taper chainstays that offer additional clearance, though that's also easy enough to check. I say go for it. Not that that matters. These are a great platform for any number of builds.

noobinsf 

Soma Weymouth is another possibility, and they have sale until 9pm today. 20% off if you enter the code "VOTE2016" when you purchase. Available with 32 or 36 hole.

Link to rims:
Soma Weymouth Rim 650b

Link to discount:
GREAT DEALS!

Edit: sale must be until midnight - not sure where I got 9pm...

Bandera

Good question.
All this "wide tires at lower pressure is faster" is too burdened with heavy rims on high spoke count hubs for real performance.

A light 16/20 low spoke count aero section AL/CF composite 650B set designed like the Shimano RS-81 fitted to my CF Merckx should handle any badly paved surface and accelerate/de-celerate properly in a paceline where rotating mass does matter. Brevets and fast club rides as well racing still lives in the well organized paceline.

Guess the paradigm shift for pave' racing in world tour events will have to occur (if ever) for that tech to emerge.

Until then the same 700X32 on my Internat'l and 700X25/28 on the road bikes will suffice as they have for years.

-Bandera

bulldog1935

I agree 700c 32mm (Stampede Pass) are great for comfortable and fast distance riding.

Tom, I'm tinkering with my new International frame, as I'm cleaning the parts I'm moving over. My Weinmann 750 rear brake that I'm moving over looks like it has enough caliper slot to go to 650b. For me, though, me and my frames are too tall - I'm happy with 700c.

ThermionicScott 

My next wheels will be built with Pacenti Brevet rims. Classic shape, clear anodized look with SS eyelets, 430g each and available in 28h, 32h, 36h.

BREVET by Kirk Pacenti, on Flickr

The 650B SL23 rims (no longer in production) were about the same weight, but more aero/V-shaped and didn't have eyelets. I'm pretty happy with that wheelset, and have a spare set of rims stashed away so that I can replace worn rims while reusing the spokes.

clasher

I was thinking of going with the velocity A23 but am leaning toward the pacenti now, probably won't build until the spring but both choices are expensive.

ThermionicScott 

Yeah, that's the bummer of niche stuff like this. I tell myself that it could be much worse though -- a pair of the nicest 650B tires once cost more than some bikes! (sauce: BQ 5, 1)

That said, if my bikes could fit 700x32C tires and fenders without toe overlap, I probably wouldn't bother, and don't blame other folks for sticking with 700C. Heck, road-oriented tire selection has gotten really good for 26", too.

noglider 

Does toe overlap really bother you? I have a lot of it, and I live with it. I've had foot problems, so my podiatrist had me move my feet forward. I pedal with the arches of my feet. So when I bang the wheel, I turn and change course. It only happens at low speeds.

HTupolev

That's still very true if you count BSOs.

Dustintendo

Closest thing ive got at the moment.

Also in the planning stages of converting a 1979 Fuji Royale to 650b

rccardr 

I worked with Sr. Pelizzoli in Bergamo, Italy to design this frame to accept multiple tire and wheel sizes, as well as an assortment of cranksets, derailleurs and brakes depending on the type of event or ride. Normally I run Vittoria Rubino Pro III's in size 25 on the Campagnolo Record high flange/Pacenti PL23 wheelset seen below, with Super Record brakes, levers, derailleurs and crankset. But it really helps to be able to swap out wheels and other bits when the event mixes pavement and gravel or rough roads.


Here it is with 700C X 32 Gravel Kings, for the Cino Heroica event in Montana in September:



And with 650B's (A23 rims on Campagnolo low flange Record hubs and Compass Loup Loup Pass tires) for this weekend's El Tour de Tucson:

gomango

Extra sweet with those big chubby tires.

Matchy, matchy with the seat post as well.

Cool bike.

ThermionicScott 

Yes, it is objectively a problem when needing to maneuver at very low speeds. Try starting or stopping on an incline with lots of people around you not acting predictably, toward the end of a 600k+ brevet. Even someone who knows they have toe overlap can be felled by it or damage their fender when something unexpected happens. (I, too, need to have my feet forward on the pedals to prevent foot pain.)

Time trialers who only start/stop once and then ride fast in straight lines can piss off, this thread is about randonneuring.

And bicycle designers who say "just deal with it" are covering for their lack of willingness to use appropriate wheel sizes and fork rakes to accommodate smaller riders. Do I have strong feelings on this? Oh maybe.

ThermionicScott 

Awesome bike, @rccardr! I dig how the clipped-on brake cable guides allow you to swap the whole brake/handlebar system as a whole to switch wheel sizes.

nlerner

That's very cool, Doc. Looks equally at home with 700 x 32 as with 650B x 38.

Chris W.

Well done Sir! I've had two Woodrups (one a bit big, one a bit small), one day I'll have another

Cheers,
Chris

Sir_Name 

Wow, rccardr. If I could have only one bike...

fender1

Here is mine (the same bike I post over & over):

[IMG][/IMG]

Minus the rear rack & saddle bag it weigh 25lbs. Not too bad considering all of the stuff attached to it. did a 200k last year and it was fun. Not much time for riding this year but that will be changing soon.

katzenfinch

I’ve posted this photo of my Chapman elsewhere in the C&V forum, but this seems like an appropriate thread for it.

bulldog1935

Not a rando, not even a front-load bike, but another idea for storage.
I had Ely at Ruthworks make a custom small rando bag for Nitto F-15 to go on my Moser.
S. Texas winters can swing 40 degrees on a clear day - 40-80. Needed a place to stuff layers, and riding with my daughter, a place to stuff her layers, too. I carry all my roadside weight in the saddle wedge.


Since a bag eliminated my only headlight mount, I added a Cygo helmet mount to the bottom of the bag.
Ely added some velcro straps for me, but to make it stiff enough, I used M4s through the U-box inside the bag.