I finished sorting
out and installing the components today and this evening I built the
front wheel while watching TV with my spouse. With only 400 yards of
riding it became apparent that this is a very nice handling and
highly responsive bicycle; the real proof will come with meaningful riding but
it felt effervescent and well mannered. It's ready for road trials
and final adjustments.
Frame: 969 wall tubing. I'm after durability rather than maximum frame performance.
Lugs: Alessandro Rizzato's Serie Corsa vintage pressed steel; Padua, Italy
BB Shell and
chainstays: Heavily worked chainstay sockets and stays provide
perfect clearance for the 60mm VO fenders. It was a bit of a grunt to get there but I couldn't be happier with how that element turned out.
Drivetrain: Stronglight 99 drive side, Stronglight 49d on the off-side until I find a mate to the '99. 42/30 rings. 2X6 which will become a 2x7 shortly, and both via a Suntour Winner freewheel.
Pedals: Old Miche.
Changers: Dura Ace front, Cyclone GT rear, Campy shift levers.
Hubs: Campy Chorus front, old Super Record rear. DB spokes @ 2mm/1.8mm.
Rims: An artifact Mavic 517 rear and a new Sun CR18 front, 36 holes.
Saddle: Will become a B17 but for now is something from my parts bin.
Headset: Tange Levin with heavy grease.
Brakes: Superbe levers x Tektro cantilevers. With nothing special pads they are strong.
Lighting: None for now but the electrical slip ring essentials, details needed for concealed wiring and tail light mounting boss are present.
Things to do: Remove the headlight mounting tab from the rack and make a better one, then get it chromed. B17 saddle. Set up the freewheel for 7 cogs. Possibly configure the rear fender for rinko; the other rinko necessities are there. Substitute Berthoud fender stays for those awful drawbolt things. Water bottle cages and better brake pads. Ride it.
John Clay
Tallahassee, Florida
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Absolutely love the concept and execution of the build. I have an ML rSogn and a couple of years ago was so obsessed with a RTP inspired rando/tourer that I had the canti posts moved for 559 wheels. Maybe a little similar conceptually, but not in the same league as John's superb design and execution.
Please post an extended ride report when ready!
IanA Alberta Canada (still very cold here).
Alistair and all – thanks! I've only ridden it a little but it is fun and lively. It feels very well connected to the road/path surface.
I think the rack will be useful, versatile. I'm looking forward to seeing how the bike handles with a load on it. For now I'll just strap what ever I need to it. The decision about a larger front rack bag will come out of that.
The frame geometry and bulk dimensions are identical to my 650b x 42 BSP bike. The RTP tire, well, tires of that size and intent, got my attention sometime after starting the 650b project. After reading about Hahn and Jan's experiences in Mexico on RTP bikes, and seeing what the BSP could do, it just made all the sense in the world to build the RTP bike. I thought that the SBH was a bit large for me and fenders but it's more workable than I thought.
The crank tread is 145mm. With a little finesse and a BB change I could get it to 140 but I probably won't go to the trouble. That's pretty satisfying for accommodating un-dented, 60mm wide fenders with a mm or two clearance on each side and a little more than 25mm annular clearance between the tire and fender ID.
Ian: I adore the color, too. It's a mixture of Rustoleum Kubota Orange and Sunburst Yellow; something in the range of 3:1 if I recall. I have the notes in the shop. Where I did a good job with the spray gun it's plenty glossy; where not it's a bit matt. If I ever re-up my urethanes I'll settle on one color and it will be this orange. But the Rusto is so inexpensive and easy to touch up I'm not sure I'll ever go back. Time will tell.
The brakes! They're a bit chunky but they'll put you over the bars.
John Clay
Tallahassee
Thanks,
D.
David - I forgot to add the chainstay photos. Here are a couple.
John Clay
Tallahassee, Florida
On Wednesday, March 6, 2019 at 10:12:11 PM UTC-5, David Cummings wrote:
...It's not really possible to tell what you did to achieve double the angle on the chain stays.
John Clay
Tallahassee, Florida
It was a cool, gray
afternoon in the woods; it had been gray all day. A cooler, gray evening was in the cards. With
my better half out of town I thought that home-made mac & cheese,
and beer seemed the perfect dinner; Dead Men Don't Wear Plaid on the
Tube. But I needed the ingredients. Why not use the RTP rather than
burning a gallon of gas? I've got about a hundred miles on it now and neither the bike nor the rack have been used in combat. The result, in little words? It
does everything meaningfully better than the BSP. That, in a
nutshell, encapsulates it. So here it is on today's bona fide mission to the Publix Supermarket.
Twenty pounds of beer, cheddar cheese and bike lock, and it still
handles superbly. You know there's some mass up there, and it took a quick re-calibration, but the bike handled just as predictably as
with no load. Walking speed was woogedy but once up to any sort of
transport speed it was perfect, including a couple of downhill
sweepers.You know the mass is there but once you've adjusted your input accordingly it just doesn't matter.

John Clay
Tallahassee, FL
Seriously enjoyable ride-report. Please keep them coming!
IanA Alberta Canada
Later,
Stephen
Eric Nichols
Who learned to build wheels from Ken who later founded Sierra Nevada Brewing Company
When I built my frame for the
Rat Trap Pass tire I included the foundational accoutrements for
Rinko,
including a brush capsule receptacle in the HT for a slip-ring assembly, but wasn't certain I'd go to the trouble to fully implement either.
Finding myself over the moon with the tire and bike I've decided to go
ahead with it. To my mind this is the perfect bike for it. The RTP bike is in the stand and I'm on the BSP bike.
The first task is installation of the slip-ring and brass brush ensemble; the other elements will follow. This is my third slip-ring project. A half dozen photos start here: https://www.flickr.com/photos/21624415@N04/47573181622/in/dateposted/
John Clay
Tallahassee, FL
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John,Absolutely amazing work!
The connector on a spring inside the frame, how do you compress it before inserting the steerer?Sent from Dave's rockin' iPhone
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John Clay
Tallahassee, Florida
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I finished sorting out and installing the components today and this evening I built the front wheel while watching TV with my spouse. With only 400 yards of riding it became apparent that this is a very nice handling and highly responsive bicycle; the real proof will come with meaningful riding but it felt effervescent and well mannered. It's ready for road trials and final adjustments.
Frame: 969 wall tubing. I'm after durability rather than maximum frame performance.
Lugs: Alessandro Rizzato's Serie Corsa vintage pressed steel; Padua, Italy
BB Shell and chainstays: Heavily worked chainstay sockets and stays provide perfect clearance for the 60mm VO fenders. It was a bit of a grunt to get there but I couldn't be happier with how that element turned out.
Drivetrain: Stronglight 99 drive side, Stronglight 49d on the off-side until I find a mate to the '99. 42/30 rings. 2X6 which will become a 2x7 shortly, and both via a Suntour Winner freewheel.
Pedals: Old Miche.
Changers: Dura Ace front, Cyclone GT rear, Campy shift levers.
Hubs: Campy Chorus front, old Super Record rear. DB spokes @ 2mm/1.8mm.
Rims: An artifact Mavic 517 rear and a new Sun CR18 front, 36 holes.
Saddle: Will become a B17 but for now is something from my parts bin.
Headset: Tange Levin with heavy grease.
Brakes: Superbe levers x Tektro cantilevers. With nothing special pads they are strong.
Lighting: None for now but the electrical slip ring essentials, details needed for concealed wiring and tail light mounting boss are present.
Things to do: Remove the headlight mounting tab from the rack and make a better one, then get it chromed. B17 saddle. Set up the freewheel for 7 cogs. Possibly configure the rear fender for rinko; the other rinko necessities are there. Substitute Berthoud fender stays for those awful drawbolt things. Water bottle cages and better brake pads. Ride it.
John Clay
Tallahassee, Florida
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On Mar 27, 2021, at 10:11 AM, David Cummings <flath...@gmail.com> wrote:
Wait until you try the new Humptulips Ridge ELs!
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On Aug 26, 2023, at 20:12, John Clay <nice.c...@gmail.com> wrote:
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