b-skinny by English
Moderators: MrCurrieinahurry, maxim809, Moderator Team
-
- Posts: 73
- Joined: Sun Feb 15, 2009 2:05 pm
Just thought I'd share on the new bike that Rob recently completed for me... it got a couple of finishing touches left and Rob will be getting some professional pictures taken of the bike before it gets shipped next week...
This project started nearly a year ago in Apr last year with a conversation on what might be the ultimate steel bike. I finally pulled the trigger in Aug and the brief to Rob was to build a bike that would be the antithesis of the current trends in bikes - everything-oversized, carbon-everything bikes (hence the name of the bike and the title of the post). The bike would be as skinny and aero as much as possible given my small size and weight (all of 1.58m tall and 52kg in weight). I also got him to make me some interesting handlebars given that I don't use the drops that much and kept it simple with 1x10 gearing. Everything was fabricated from ground up as much as practicable and we weren't able to do some stuff because of the time need to test parts but I can say that 75% of the bike is Rob's handiwork.
Of course, given that design is about making a set of decisions and compromises fit for its purpose, the bike won't be for everybody and won't be to everybody's taste but it will suit me fine...
Rob, it's been a pleasure working with you and thanks for being very patient and understanding of the changes that I've made along the way and for the expert advice on every aspect of the build - looking forward to the next project already!!
So just to start out... a couple of tubes and a couple of holes...
This project started nearly a year ago in Apr last year with a conversation on what might be the ultimate steel bike. I finally pulled the trigger in Aug and the brief to Rob was to build a bike that would be the antithesis of the current trends in bikes - everything-oversized, carbon-everything bikes (hence the name of the bike and the title of the post). The bike would be as skinny and aero as much as possible given my small size and weight (all of 1.58m tall and 52kg in weight). I also got him to make me some interesting handlebars given that I don't use the drops that much and kept it simple with 1x10 gearing. Everything was fabricated from ground up as much as practicable and we weren't able to do some stuff because of the time need to test parts but I can say that 75% of the bike is Rob's handiwork.
Of course, given that design is about making a set of decisions and compromises fit for its purpose, the bike won't be for everybody and won't be to everybody's taste but it will suit me fine...
Rob, it's been a pleasure working with you and thanks for being very patient and understanding of the changes that I've made along the way and for the expert advice on every aspect of the build - looking forward to the next project already!!
So just to start out... a couple of tubes and a couple of holes...
Visit starbike.com Online Retailer for HighEnd cycling components
Great Prices ✓ Broad Selection ✓ Worldwide Delivery ✓
www.starbike.com
-
- Posts: 73
- Joined: Sun Feb 15, 2009 2:05 pm
and then some shaving...
Rob's very good at shaving down stuff to save weight...
Rob's very good at shaving down stuff to save weight...
-
- Posts: 73
- Joined: Sun Feb 15, 2009 2:05 pm
pics of the frame jigged up for brazing... silver brazing to keep things strong and light...
smoking in the night...
smoking in the night...
-
- Posts: 73
- Joined: Sun Feb 15, 2009 2:05 pm
Forks were also steel, custom made from 7/8" 4130 tubing Rob ovalized himself...
Given the concurrent aero theme, we also tried to fit a Arundel aero bottle on the back, but it did not quite fit...
But it was alright in the end because this did...
We also left some options open for other aero craziness...
Given the concurrent aero theme, we also tried to fit a Arundel aero bottle on the back, but it did not quite fit...
But it was alright in the end because this did...
We also left some options open for other aero craziness...
-
- Posts: 73
- Joined: Sun Feb 15, 2009 2:05 pm
just before we get to the pics of the bike done up, here's a list of tube weights for the frame...
Top Tube (OX Plat 1" round): 154g
Down Tube (teardrop S3 toptube): 212g
Head Tube (machined from straight gauge 31.8mm x 0.9mm 4130): 28g
Chain Stays (S3): 192g
Seat Stays: 145g + 8g custom rear brake bridge
Seat Tube (machined from straight gauge 25.4mm x 0.9mm 4130): 214g
BB shell (machined internally and externally, material removed under tubes): 70g
Dropouts: 78g
Total, pre-brazing and powdercoat: 1101g
Top Tube (OX Plat 1" round): 154g
Down Tube (teardrop S3 toptube): 212g
Head Tube (machined from straight gauge 31.8mm x 0.9mm 4130): 28g
Chain Stays (S3): 192g
Seat Stays: 145g + 8g custom rear brake bridge
Seat Tube (machined from straight gauge 25.4mm x 0.9mm 4130): 214g
BB shell (machined internally and externally, material removed under tubes): 70g
Dropouts: 78g
Total, pre-brazing and powdercoat: 1101g
-
- Posts: 73
- Joined: Sun Feb 15, 2009 2:05 pm
Here's the bike!! Couple more finishing details but its nearly done...
-
- Posts: 73
- Joined: Sun Feb 15, 2009 2:05 pm
Build list and (nearly) final weights - I think tubs have not been glued yet and a couple of misc bolts and stuff:
Frame: English custom steel ISP 1160g
Fork: English custom steel 358g
Headset: Chris King 1" Nothreadset 98g
Stem/steerer/bar: English custom steel 592g
Seatpost: English custom cap, Edge hardware 94g
Saddle: Becker pop 110g
BB: Lightning inc
Cranks: Lightning, carbon spider 444g
Chainring: Fibrelyte 44T 36g
Chainring bolts: Aluminium for single ring 8g
Rear wheel: Extralite, Enve 1.45, CX-ray 554g
Front wheel: Extralite, Enve 1.45, CX-ray 434g
Tyres: Vittoria CX 504g
Skewers: KCNC Titanium 44g
Cassette: Recon aluminium 12-25 104g
Chain: KMC X-10SL 222g
Rear derailleur: SRAM Red 148g
Brakes: KCNC C7, Enve pads 166g
Cables: Vision, Sram 120g estimated
Shifter: SRAM TT900 76g
Bar Tape: Felt tri tips 76g
Brake levers: Vision TT 88g
5436g 11.96lbs
Bottle and cage: Arundel Aero 126g
Draft box: Bontrager 188g
Draft box bag: Bontrager neoprene 34g
No pedals yet - I will be most like be reusing my old keo carbons which will weigh about 230g.
Frame: English custom steel ISP 1160g
Fork: English custom steel 358g
Headset: Chris King 1" Nothreadset 98g
Stem/steerer/bar: English custom steel 592g
Seatpost: English custom cap, Edge hardware 94g
Saddle: Becker pop 110g
BB: Lightning inc
Cranks: Lightning, carbon spider 444g
Chainring: Fibrelyte 44T 36g
Chainring bolts: Aluminium for single ring 8g
Rear wheel: Extralite, Enve 1.45, CX-ray 554g
Front wheel: Extralite, Enve 1.45, CX-ray 434g
Tyres: Vittoria CX 504g
Skewers: KCNC Titanium 44g
Cassette: Recon aluminium 12-25 104g
Chain: KMC X-10SL 222g
Rear derailleur: SRAM Red 148g
Brakes: KCNC C7, Enve pads 166g
Cables: Vision, Sram 120g estimated
Shifter: SRAM TT900 76g
Bar Tape: Felt tri tips 76g
Brake levers: Vision TT 88g
5436g 11.96lbs
Bottle and cage: Arundel Aero 126g
Draft box: Bontrager 188g
Draft box bag: Bontrager neoprene 34g
No pedals yet - I will be most like be reusing my old keo carbons which will weigh about 230g.
-
- Posts: 465
- Joined: Thu Aug 31, 2006 4:58 pm
- Location: Ontario, Canada
what type of position do you plan on riding? Hands on the 'hoods'?
Why go with such a small head tube when you have a practically vertical stem?
Certainly a unique frame
Why go with such a small head tube when you have a practically vertical stem?
Certainly a unique frame
-
- Posts: 73
- Joined: Sun Feb 15, 2009 2:05 pm
Yes, mostly on hoods.
Small head tube to minimize steerer tube length and also allow me to do this:
Small head tube to minimize steerer tube length and also allow me to do this:
- prendrefeu
- Posts: 8580
- Joined: Wed Oct 31, 2007 10:32 pm
- Location: Glendale / Los Angeles, California
- Contact:
Exp001 || Other projects in the works.
-
- Posts: 465
- Joined: Thu Aug 31, 2006 4:58 pm
- Location: Ontario, Canada
ok, thats pretty cool.
Can you hold onto the extensions at the end of the bar?
Can you hold onto the extensions at the end of the bar?
-
- Posts: 73
- Joined: Sun Feb 15, 2009 2:05 pm
not sure which extensions you meant but the answer is yes, at least design-wise but I really won't know as I haven't taken delivery of the bike yet and I'm a couple of thousand miles away in Singapore
The 'pistol-grips' are supposed to give me a closer 'drops' position if I needed it and the additional horizontal cross bar is supposed to give me a aero position with my forearms resting on the main handlebar - kind of replicating the position if you had drops and old STI with shifter cables.
The 'pistol-grips' are supposed to give me a closer 'drops' position if I needed it and the additional horizontal cross bar is supposed to give me a aero position with my forearms resting on the main handlebar - kind of replicating the position if you had drops and old STI with shifter cables.
Visit starbike.com Online Retailer for HighEnd cycling components
Great Prices ✓ Broad Selection ✓ Worldwide Delivery ✓
www.starbike.com
-
- Posts: 465
- Joined: Thu Aug 31, 2006 4:58 pm
- Location: Ontario, Canada
yes, the 'pistol-grips' are what I was referring to.
I'm interested in hearing a ride report of these bars, once you get it of course
I'm interested in hearing a ride report of these bars, once you get it of course