Sizes, Geometry & Colors:

Above: Pics of the art by the amazing Spencer H, of Nomad Patches, and Dante of RYMB. Check out there work and merchandise. Just both top notch! If you need art, patches or stickers/decals these are the guys!

 

SPECS:

Norther Lyon Ultra Light Rando frames are made with standard sized tubes: one inch top tubes, 1 1/8 seat and down tubes. All frames are made with a custom mixture of extra light 7.4.7 high quality tubes from True Temper, Kaisei, and Reynolds, and 8.5.8 down tube for the best flex and performance characteristics. The .8/.5/.8 down tubes are less than one ounce heavier than the .7/.4 tubes, and just %10 stiffer to give the bikes optimal flex/plane characteristics. Tubes are measured in tenths of a millimeter! So we’re talking less than half of one millimeter thick!

They all have the Kaisei super supple "Toei Special" fork blades and the light, (hollow), and elegant Compass 54mm fork crown. All frames will come with a seat post binder bolt and under the bb cable guide. All frames will come with your choice of powder coat color (listed at the bottom of this page), Norther Lyon “Head badge” decal, Norther Lyon “Made in Oregon” hand numbered seat tube decal, and die cut down tube decal. All Norther Lyon frames come prepped: all bearing surfaces and threads faced chased and tapped, to make sure every frame is ready to build!

All frames take a 27.2 seat post, and 28.6 front derailleur clamp.

*Rake and trail number arrived at thanks to the amazing Yojimg online trail calculator (Partially made by friend of the shop and customer Gino!)

*Recommended “maximum” rider weight of right around 180lbs-ish (this is only a recommendation not a law, or exact science, we're not cops, do what you think is right for you).

*Stand overs are an approximation, and my poor math skills, and can and will probably be a few mm lower depending on rims and tire fit. As frames get physically made I will measure them and update the measurements.

*All numbers subject to change slightly as I get clarifications and corrections from Jeff.

 

Weight:

A very light 5.89 pounds frame and fork for size 56cm threadless prototype.

 

SIZES:

We’re currently offering the Norther Lyon ultra light 650B Randonneur frames in sizes 50CM, 52CM, 54CM, 56CM, 58CM and 60CM.

Smaller than size 50cm frames will get made if there is any interest. **Larger frames probably wont as the tubes are just too light…

 

50cm:

The “50cm” is a little different. It has a 49 cm seat tube, measured ctc, but a head tube height as if it’s a 50cm. So it has a very slight sloping top tube.

49 cm seat tube measured center to center.

53 top tube center to center.  

74 degree seat tube angle.   

72 degree head tube angle.   

72mm rake of fork rake.  

34mm of trail with a wheel flop of 10mm.

71mm of bottom bracket drop.

Chain stays are 44cm from the center of the bb to the center of the rear axle.

All frames have 1in head tube extension built in. (So you don't have to use as many headset spacers).

49/50cm stand over will be right about 75cm.

 

52cm:

52 cm seat tube measured center to center.

53.8 top tube center to center.  

74 degree seat tube angle.   

72 degree head tube angle.   

70mm rake of fork rake.  

36mm of trail with a wheel flop of 11mm.

71mm of bottom bracket drop.

Chain stays are 44cm from the center of the bb to the center of the rear axle.

All frames have 1in head tube extension built in. (So you don't have to use as many headset spacers).

52cm stand over will be right about 78cm.

 

54CM:

54cm seat tube measured center to center.

54.5 top tube center to center.

73.5 degree seat tube angle.

72 degree head tube angle.

68mm of fork rake.

38mm of trail with a wheel flop of 11mm.

71mm of bottom bracket drop.

Chain stays are 44cm from the center of the bb to the center of the rear axle.

All frames have 1in head tube extension built in. (So you don't have to use as many headset spacers).

54cm stand over is 79cm (measured from the ground to top of top tube).

 

 56CM:

56cm seat tube measured center to center.

56cm top tube center to center.

73 degree seat tube angle.

73 degree head tube angle.

68mm of fork rake.

32mm low trial with 9mm wheel flop.

71mm of bottom bracket drop.

Chain stays are 44cm from the center of the bb to the center of the rear axle.

All frames have 1in head tube extension built in. (So you don't have to use as many headset spacers).

56cm should have about an 82cm stand over.

 

58CM:

58cm seat tube measured center to center.

57cm top tube center to center.

73 degree seat tube angle.

73 degree head tube angle.

68mm of fork rake.

32mm low trial with 9mm wheel flop.

71mm of bottom bracket drop.

Chain stays are 44cm from the center of the bb to the center of the rear axle.

All frames have 1in head tube extension built in. (So you don't have to use as many headset spacers).

58cm should have about an 84cm stand over.

 

60cm:

60cm seat tube measured center to center.

57.5 top tube center to center.

72.5 seat tube angle.

73.5 head tube head tube angle.

68mm fork rake with 29mm trail, 8mm wheel flop.

71mm of bottom bracket drop.

Chain stays are 44cm from the center of the bb to the center of the rear axle.

Stand over should be right around 86cm.

*Note: on 60cm frames, Jeff recommends them made with a single over-sized, but still 7.4.7, like all the other frames, super light tube set. But will do them out of standard sized tubes if you insist you can stand/get away with a super flexie bike.

 

Colors:

As of now, we are having each frame powder coated individually locally at CC Coatings using Prismatic Powders. We are offering your choice of the following four colors, but will sometimes make exceptions for other colors if you find one you like better (It needs to be a single stage/coat, and look good with the gold logos for us to consider it).

Lazer Copper PMB-4151. Lazer Copper is a dark brown base with a heavy copper metallic. This color is a polyester metallic powder coat and has a high gloss finish.

 

Misty Aquarius PMB-4245. Misty Aquarius is an aqua blue and dark teal combination with a heavy metallic. This color is a polyester metallic powder coat and has a glossy finish.

 

Troll Blue PSS-2657. Troll Blue is a light sky blue. This color is a polyester solid tone powder coat and has a high gloss finish.

 

Kingsport Grey PMB-5027. Kingsport Grey is a charcoal grey with a heavy silver metallic flake. This color is a polyester metallic powder coat with a high gloss finish.


*Please see our About & Ordering Page for a listing and description of all standard braze ons and upgrade options.