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Purely a matter of rider preference. At this moment, I'm 100kg and my JP Weigle is std non-OS 7/4/7 and I love it.

I too noticed that nice L’avecaise, but I wonder if the tubing is a tad too light for a 215lbs rider plus 10lbs(?) brevet load. Single oversized 747 top, 858 down tube... Ilter in Chicago

It's coupled, yes, but the couplers are in the butts so they don't reinforce the .4 section of the tubing. Remember that an OS 7/4/7 tube is about the same stiffness as a standard 9/6/9 one, so if anything it might feel kind of stiff if you're used to flexy standard-diameter tubing.
-david parsons
Dave -
That’s one awesome machine. Needs a post if it’s own.
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David -
That’s one awesome machine. Needs a post if it’s own.
I would encourage you not to delay going with the dynamo hub. When starting from scratch, the only additional cost is the difference between the cost of a regular hub and a dynamo one. The awesome looking Shutter Precision SV8 for rim brakes can be had for a little over $100. Shimano has great reasonable cost options too.
I have a couple of SON28 hubs, which are really nice pieces, but my Shimano 3n80 is just as good in practice. If I needed another dynamo hub today, I'd most likely chose a Shutter Precision SV8.
IanA Alberta Canada
IanA
Although the SV8 is the small wheel version, it works fine for large wheels as long as your speed isn't super slow (think long grinding climbs fully loaded or more technical terrain). I used one for my first Rando machine, and now am using the equivalent SON hub, and never had a power shortage. I guess the other consideration is if you want to charge devices. The small wheel version is a bit lower drag.
Anyway, it's all marginal and both will do the trick.
Toby Whitfield
Toronto, Canada
On Shutter Precision, I've arrived at the point of not being a fan. My wife and I have them on 2 commuters that get truly all weather use. So far, each hub has failed within 10k miles (2-3 years) of use. SP is very good with warranty, but you need to ship to Taiwan which adds weeks to a rebuild time and rebuild cost. I have a NIB replacement from my last warranty call, if anyone wants it. My take on these is that the extra paid for other hubs is probably going to be worth it.
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Thanks to everyone for the input. Truly a 650b convert.
https://share.icloud.com/photos/06EZmLfVWsvjm-8phbpnIugpg#Rosewood_Park