Ask Scrod
03-03-13 | 12:34 PM
#7051
Senior Member
Joined: Sep 2012
Posts: 454
Likes: 0
From: Mass
Bikes: 2004 Bianchi Pista
Would it possible to make a billet aluminum rim? If it is, would it be better for weight to strength ratio? Do companies do it already?
03-03-13 | 01:33 PM
#7052
Senior Member
Joined: Jan 2012
Posts: 4,852
Likes: 14
From: Ithaca, NY
Bikes: Click on the #YOLO
No, it'd probably be weaker, heavier and a ****TON more expensive.
Billets have a grain (tires at 100+ PSI require a lot of strength, a billet may shear off along the braking surface), and extruded rims can be double wall (try machining that). Plus, unless you came up with some clever way to get a 29"/700, 26", 24", 20", 16" and 12" out of the same billet, there would be an insane amount of waste.
Aside: Back in the day Keith Bontrager used to take 40h tandem 700c rims, split them and then roll them down to make beefy 32h 26" MTB rims. Whatever fabrication skills you may have, you're never going to touch that.
E: Crap, this is the Scrod thread. Sorry man, hope you're already in SD and this blows over.
Billets have a grain (tires at 100+ PSI require a lot of strength, a billet may shear off along the braking surface), and extruded rims can be double wall (try machining that). Plus, unless you came up with some clever way to get a 29"/700, 26", 24", 20", 16" and 12" out of the same billet, there would be an insane amount of waste.
Aside: Back in the day Keith Bontrager used to take 40h tandem 700c rims, split them and then roll them down to make beefy 32h 26" MTB rims. Whatever fabrication skills you may have, you're never going to touch that.
Originally Posted by his wikipedia page
In 1984 he cut 700C (ISO 622) 40-hole Mavic MA-2 tandem rims to the circumference of a 26" rim, re-rolling them to create a 32-hole 26" rim.
Last edited by IthaDan; 03-03-13 at 01:37 PM.
03-03-13 | 02:23 PM
#7053
:)
Joined: Mar 2011
Posts: 3,420
Likes: 3
From: San Jose, CA
Bikes: Cannondale CAAD12, Specialized Rockhopper, Norco Fluid FS1
03-04-13 | 12:24 AM
#7054
Painfully average.
Joined: Jun 2010
Posts: 2,304
Likes: 4
Bikes: Caad10 / All-City SP
03-04-13 | 12:31 AM
#7055
Senior Member
Joined: Jan 2013
Posts: 394
Likes: 0
From: Bay Area/Davis, CA
03-04-13 | 01:45 AM
#7056
Senior Member
Joined: Jun 2011
Posts: 63
Likes: 0
From: Snohomish County, WA
Bikes: 89' Trek 400
hello fg/ss riders,
I have a problem with fitting tyres on rims. I've swapped tyres many times, but I've never seen tyres as annoying as my Vittoria Zaffiro...
Does anyone have experience with installing Vittoria's tyres? Are they all very painful to install, or is it just me with an unlucky combination of rims and tyres? Thanks.
I have a problem with fitting tyres on rims. I've swapped tyres many times, but I've never seen tyres as annoying as my Vittoria Zaffiro...
Does anyone have experience with installing Vittoria's tyres? Are they all very painful to install, or is it just me with an unlucky combination of rims and tyres? Thanks.
03-04-13 | 07:15 AM
#7057
Thread Starter
Your cog is slipping.
Joined: May 2009
Posts: 26,053
Likes: 100
From: Beverly MA
Bikes: EAI Bareknuckle
That's really not unreasonable for a Columbus Zona frame. Think about the price of a Gazzetta for comparison, which is made of 4130 (and coincidentally, made by Colossi).
03-04-13 | 07:17 AM
#7058
Thread Starter
Your cog is slipping.
Joined: May 2009
Posts: 26,053
Likes: 100
From: Beverly MA
Bikes: EAI Bareknuckle
hello fg/ss riders,
I have a problem with fitting tyres on rims. I've swapped tyres many times, but I've never seen tyres as annoying as my Vittoria Zaffiro...
Does anyone have experience with installing Vittoria's tyres? Are they all very painful to install, or is it just me with an unlucky combination of rims and tyres? Thanks.
I have a problem with fitting tyres on rims. I've swapped tyres many times, but I've never seen tyres as annoying as my Vittoria Zaffiro...
Does anyone have experience with installing Vittoria's tyres? Are they all very painful to install, or is it just me with an unlucky combination of rims and tyres? Thanks.
There's an entire forum - as well as a dedicated thread for asking general questions.
03-04-13 | 07:54 AM
#7059
Senior Member
Joined: Jun 2008
Posts: 13,765
Likes: 3,937
From: Louisville, KY
Completely true, but some of us have high end Italian tastes and Origin8 (at best) budgets.
__________________
Bikes: 1996 Eddy Merckx Titanium EX, 1989/90 Colnago Super(issimo?) Piu(?),1990 Concorde Aquila(hit by car while riding), others in build queue "when I get the time"
Bikes: 1996 Eddy Merckx Titanium EX, 1989/90 Colnago Super(issimo?) Piu(?),
03-04-13 | 09:40 AM
#7060
Senior Member
Joined: May 2011
Posts: 599
Likes: 0
From: Providence, RI
Bikes: Civilian Le Roi Le Veut, Kazane Track, Ciocc Designer '84, Serotta Colorado AL 25th anniversary, '85 Guerciotti Pista, '84 Trek 660, Volume Credence
To get Colossi's custom Niteo frame it costs $825 for the filet brazed frame with triple triangle, and $225 for a Columbus max fork then $150 for shipping. This is all with custom geometry. So $1200 bucks for a custom frame does not seem too bad to me.
03-04-13 | 09:52 AM
#7061
Thread Starter
Your cog is slipping.
Joined: May 2009
Posts: 26,053
Likes: 100
From: Beverly MA
Bikes: EAI Bareknuckle
Exactly. Colossi does some nice work too.
03-04-13 | 11:31 AM
#7062
Painfully average.
Joined: Jun 2010
Posts: 2,304
Likes: 4
Bikes: Caad10 / All-City SP
You know, you're totally right. And to be honest if I had to choose between the Cinelli or Colossi, I'd probably choose the Colossi every time.
03-05-13 | 12:30 AM
#7064
Senior Member
Joined: Jun 2011
Posts: 63
Likes: 0
From: Snohomish County, WA
Bikes: 89' Trek 400
Are you asking me or asking anyone?
There's an entire forum - as well as a dedicated thread for asking general questions.
There's an entire forum - as well as a dedicated thread for asking general questions.
I'll grab a few tyre levers tomorrow and try to fit the tyres again with dish detergent or lubricants. Let's see how that will work.
03-05-13 | 06:47 AM
#7065
Thread Starter
Your cog is slipping.
Joined: May 2009
Posts: 26,053
Likes: 100
From: Beverly MA
Bikes: EAI Bareknuckle
Tire levers are for removing tires, not installing them. If you're having that much trouble, buy a tire bead jack.
Last edited by Scrodzilla; 03-05-13 at 08:09 AM.
03-05-13 | 07:45 AM
#7066
Senior Member
Joined: May 2011
Posts: 599
Likes: 0
From: Providence, RI
Bikes: Civilian Le Roi Le Veut, Kazane Track, Ciocc Designer '84, Serotta Colorado AL 25th anniversary, '85 Guerciotti Pista, '84 Trek 660, Volume Credence
So I also just asked how much the Al Colossione is and its only $360 with $150 bucks shipping. If that is their retail price, their wholesale price must be like ~$200. Can't believe Superb is selling them for $700. You can also get it with the carbon fork instead of the steel one for the same price.
03-05-13 | 08:08 AM
#7067
Thread Starter
Your cog is slipping.
Joined: May 2009
Posts: 26,053
Likes: 100
From: Beverly MA
Bikes: EAI Bareknuckle
So I also just asked how much the Al Colossione is and its only $360 with $150 bucks shipping. If that is their retail price, their wholesale price must be like ~$200. Can't believe Superb is selling them for $700. You can also get it with the carbon fork instead of the steel one for the same price.
03-05-13 | 09:16 AM
#7068
Brown Jersey Winner
Joined: Apr 2012
Posts: 8,797
Likes: 13
From: The Bad Woods.
Tire levers are for removing tires, not installing them. If you're having that much trouble, buy a tire bead jack.
03-05-13 | 09:18 AM
#7069
Thread Starter
Your cog is slipping.
Joined: May 2009
Posts: 26,053
Likes: 100
From: Beverly MA
Bikes: EAI Bareknuckle
I have too. I've also pinched the **** out of tubes by doing so.
03-05-13 | 10:00 AM
#7070
Senior Member
Joined: Jul 2011
Posts: 2,647
Likes: 6
From: Sudbury, ON, CA
Bikes: 2012 Kona Sutra, 2002 Look AL 384, 2018 Moose Fat bike
Tire levers are for removing tires, not installing them. If you're having that much trouble, buy a tire bead jack.
03-05-13 | 10:02 AM
#7071
Senior Member
Joined: Feb 2005
Posts: 1,264
Likes: 15
Can you recommend a decent chain tensioner for a single speed mountain bike conversion (1991 Rockhopper Comp) with vertical drop outs. Been using it with a magic gear but that gets old quickly when the chain stretches and stars popping off.
03-05-13 | 12:14 PM
#7072
Thread Starter
Your cog is slipping.
Joined: May 2009
Posts: 26,053
Likes: 100
From: Beverly MA
Bikes: EAI Bareknuckle
03-05-13 | 12:22 PM
#7073
Brown Jersey Winner
Joined: Apr 2012
Posts: 8,797
Likes: 13
From: The Bad Woods.
03-05-13 | 12:32 PM
#7074
Thread Starter
Your cog is slipping.
Joined: May 2009
Posts: 26,053
Likes: 100
From: Beverly MA
Bikes: EAI Bareknuckle
