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-   -   C&V inspired custom lightweight 650b (https://www.bikeforums.net/classic-vintage/1161110-c-v-inspired-custom-lightweight-650b.html)

smallpox champ 11-28-18 10:36 AM

C&V inspired custom lightweight 650b
 
Over the weekend I finished building up my custom 7/4/7 Ox Platinum lugged 650b frameset, gravel, all-rounder, randonneur, what-have-you... I've only been on short shakedown rides so far, but it really begs to be ridden fast. The chainstays are a relatively short 420mm for the 41mm actual Pari-Moto's, the handling is definitely sporty and quick. The frame is incredibly lively, I can flex it easily but at no point has the handling suffered, though I haven't hammered too much or taken any hairpin turns yet. I was initially nervous because the frame was sitting for a couple months before paint and little doubts start to creep in, but I'm loving the ride so far, it's just plush, light and quick.

The build turned into chasing light weight, but nothing on it is stupid, I feel, except for the titanium skewers. There are a couple hidden titanium bits but nothing is chopped, filed or drilled. The frame and fork together are 5.1lb. The wheelset, with DT Revolution spokes and alloy nipples is 1450g. The bike without pedals is 17.9lb.


https://cimg3.ibsrv.net/gimg/bikefor...ae52123c6e.jpg
https://cimg5.ibsrv.net/gimg/bikefor...b7ac68d915.jpg
https://cimg6.ibsrv.net/gimg/bikefor...ca5ff0ea56.jpg
https://cimg7.ibsrv.net/gimg/bikefor...5a97145ad2.jpg
https://cimg8.ibsrv.net/gimg/bikefor...9be5221b1d.jpg


Photos of the framebuilding process: https://photos.app.goo.gl/JqBt3mNUAWYpAw9m6


https://cimg3.ibsrv.net/gimg/bikefor...628d67a42.jpeg
https://cimg2.ibsrv.net/gimg/bikefor...6c163ec11.jpeg
https://cimg2.ibsrv.net/gimg/bikefor...6a7139ed0.jpeg


Aesthetic notes: The olive tape was not bicycle specific, it's actually a tighter weave than Newbaum's or Tressostar, making it harder to wrap without creases or folds. I should have gone with tan wall Pari-Moto's but got too good a deal on the black pair to pass up. I need some modest decal suggestions, but I'm so enamored with the bike as is I may forget about it altogether.

-Devin

jeirvine 11-28-18 10:47 AM

That is insanely great, and I can't believe it's weight with a Brooks. The lug work looks top notch too. I'll take it! :)

Happy Feet 11-28-18 10:49 AM

Excellent bike build and the frame build photos were fantastic! Seriously jealous of the frame building skills.
Beautifully minimalist yet it has what you need with old world functional grace.
Thanks for sharing :)

USAZorro 11-28-18 10:53 AM

What a lovely build and finish.

northbend 11-28-18 10:58 AM

Great looking bike. You built the frame set yourself? I like the placement of the fender bosses inside the seat stays, fork. Very clean looking.

Fahrenheit531 11-28-18 11:07 AM

Very slick. Bonus points for the taillight braze-on. :thumb:

fietsbob 11-28-18 11:11 AM

You the frame builder? if not, who did?

smallpox champ 11-28-18 11:29 AM

Thanks all,


Originally Posted by northbend (Post 20681816)
Great looking bike. You built the frame set yourself?


Originally Posted by fietsbob (Post 20681839)
You the frame builder? if not, who did?

Yes, I built the frame with a plate, saw, vise and files.


https://cimg4.ibsrv.net/gimg/bikefor...df8376744.jpeg

Vintage_Cyclist 11-28-18 11:54 AM

Very tasty. I'd keep it minimalist and forgo the decals altogether. However, I'd consider a nice, custom, silver metal head badge.

MattTheHat 11-28-18 12:01 PM


Originally Posted by Fahrenheit531 (Post 20681834)
Very slick. Bonus points for the taillight braze-on. :thumb:

I thought that was pretty slick too.

Very, very nice build!

-Matt

rccardr 11-28-18 12:05 PM

Wow, that's lovely. Pinned, too!
Interesting choice of components, love the wide range gearing...

gugie 11-28-18 12:33 PM

Oof!

More pix of the framebuilding process, please!

Happy Feet 11-28-18 01:12 PM


Originally Posted by smallpox champ (Post 20681875)
Yes, I built the frame with a plate, saw, vise and files.

Pardon my asking but what is a plate?

Salamandrine 11-28-18 01:16 PM

Awesome modern classic!

I kind of like it plain with no decals, but I could accept a head badge if it was cool, and/or a retro sized discreet DT decal.

5.1 lbs, frame and fork? That's very light indeed. OS should help overcome the noodle-ness, while keeping it superlight.

52telecaster 11-28-18 03:19 PM

Man that is the sh#t.

Classtime 11-28-18 03:25 PM

Very Very Nice. I need a plate, a vise, a saw and some files. Are you friction shifting?

noobinsf 11-28-18 03:28 PM

Gorgeous... Would love more details on the gearing and shifting...

ridelikeaturtle 11-28-18 03:55 PM

Just gorgeous. Well done, really great job.

rando_couche 11-28-18 04:47 PM

That's what I'm talkin' 'bout!

beicster 11-28-18 05:56 PM

That is a beauty. I would be proud to ride that around.

dunrobin 11-28-18 06:13 PM

Very nice build...the attention to detail is droolworthy... the fillet brazed bottom bracket, fork, everything is done thoughtfully and with care...first time?

squirtdad 11-28-18 06:37 PM

with a quality build like that you need a headbadge and a nice script on the down tubes....though I think you need a better builder name than smallpox champ :)

Doug Fattic 11-28-18 08:42 PM


Originally Posted by Happy Feet (Post 20682090)
Pardon my asking but what is a plate?

I'm assuming he is referring to some kind of flat surface on which he placed aluminum blocks made by Paragon Machine Works (that hold the frame tubes) over his full scale drawing so this main tubes can be tack brazed together. During the brazing process he brings the frame back to the surface plate to check and adjust alignment as necessary.

smallpox champ 11-28-18 09:11 PM

Thanks again,


Originally Posted by gugie (Post 20682025)
More pix of the framebuilding process, please!

Here's most the pics, I wish I took more but find keeping up with process pics tough: https://photos.app.goo.gl/JqBt3mNUAWYpAw9m6


Originally Posted by Happy Feet (Post 20682090)
Pardon my asking but what is a plate?

As Doug Fattic said, a flat surface plate, I have a steel plate that is invaluable for aligning, measuring and pseudo jigging.


Originally Posted by Classtime (Post 20682291)
Are you friction shifting?


Originally Posted by noobinsf (Post 20682296)
Gorgeous... Would love more details on the gearing and shifting...

Friction shifting 9 speeds, Rivendell/Dia Compe Silver shift levers, Shimano 12-27 cassette and Campagnolo Chorus 11 speed derailleur. One benefit is that the Campy has a slightly better ratio for more precise friction shifting. Sunxcd crank with 46-28 TA rings. With careful adjustment the Suntour Mountech shifts the front nicely without dropping the chain, the rear shifts smoothy but is fussy about the wide range.


Originally Posted by dunrobin (Post 20682509)
first time?

Second frame, done slow but carefully.

corn on the cog 11-28-18 09:52 PM

Damn that is beautiful through and through.


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