Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 05-12-12, 01:55 PM   #1
fusilierdan
Senior Member
Thread Starter
 
fusilierdan's Avatar
 
Join Date: May 2008
Location: Rockland County, NY
Bikes: Giant TCRC2 2007, Dahon MU P8 2012, GT Avalance 2011
Posts: 317
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 7 Post(s)
Coaster brake on a chromoly frame.

Could I put a coaster brake on a chromoly frame without damage to the chain stays? I'm looking to make my bike a 3 speed IGH and was wondering about this. I'll be heading to my LBS next week to look for wheels and wanted some input before I go.
Thanks
fusilierdan is offline   Reply With Quote
Old 05-12-12, 02:20 PM   #2
LesterOfPuppets
cowboy, steel horse, etc
 
LesterOfPuppets's Avatar
 
Join Date: Sep 2008
Location: Rock Springs, WY
Bikes: My War
Posts: 27,215
Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
Quoted: 574 Post(s)
What kind of cromo frame. I think all but the lightest, raciest 3% of cromo road frames could take it. Probably only about 0.125% of cromo MTB frames might have troubles with it.

Just put a snippet of innertube under the strap to keep the frame pretty.

I'd probably just get a non-coaster 3-speed, though. Actually I'd probably get that Sturmey Archer 3-speed Fixed hub, but that's just me. You can roll it fixed or screw a freewheel on it.

Last edited by LesterOfPuppets; 05-12-12 at 02:24 PM.
LesterOfPuppets is offline   Reply With Quote
Old 05-12-12, 02:34 PM   #3
Scooby214
Saving gas on my commute
 
Scooby214's Avatar
 
Join Date: Oct 2010
Location: Oklahoma City
Bikes:
Posts: 511
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by LesterOfPuppets View Post
What kind of cromo frame. I think all but the lightest, raciest 3% of cromo road frames could take it. Probably only about 0.125% of cromo MTB frames might have troubles with it.

Just put a snippet of innertube under the strap to keep the frame pretty.

I'd probably just get a non-coaster 3-speed, though. Actually I'd probably get that Sturmey Archer 3-speed Fixed hub, but that's just me. You can roll it fixed or screw a freewheel on it.
The S3X Sturmey Fixed hub has some interesting potential. I would use it with a screw on freewheel. What I like about the S3X is that its direct drive gear is 3rd gear, meaning you are in direct drive when going your fastest instead of using an overdrive 3rd gear like the S30 Sturmey 3 speeds and the Shimano Nexus 3.
Scooby214 is offline   Reply With Quote
Old 05-12-12, 04:16 PM   #4
fusilierdan
Senior Member
Thread Starter
 
fusilierdan's Avatar
 
Join Date: May 2008
Location: Rockland County, NY
Bikes: Giant TCRC2 2007, Dahon MU P8 2012, GT Avalance 2011
Posts: 317
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 7 Post(s)
It's an older 1988 Mtn bike frame, Giant Sedona, I want to use it on my 11 mile RT commute. The thought behind the coaster brake was just to get some stuff off the handle bar. Maybe duo drive hub would work where you kick back to switch gears but I'm not very familiar with those.
fusilierdan is offline   Reply With Quote
Old 05-12-12, 07:17 PM   #5
Scooby214
Saving gas on my commute
 
Scooby214's Avatar
 
Join Date: Oct 2010
Location: Oklahoma City
Bikes:
Posts: 511
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by fusilierdan View Post
It's an older 1988 Mtn bike frame, Giant Sedona, I want to use it on my 11 mile RT commute. The thought behind the coaster brake was just to get some stuff off the handle bar. Maybe duo drive hub would work where you kick back to switch gears but I'm not very familiar with those.
That frame should be fine with a coaster brake. There have been times I have considered a Shimano Nexus 3 with a coaster brake, thinking it would make for better braking in the wet. I currently use a freewheel Nexus 3, and find it to be a very durable hub. I wish there were other shifting options available other than gripshift for the Nexus 3.

One thing to keep in mind with a coaster brake is that it can make getting your pedals in position at a stoplight a little tricky. Some people are bothered by this, others figure out how to make it work.
Scooby214 is offline   Reply With Quote
Old 05-12-12, 08:17 PM   #6
Kimmo
bike whisperer
 
Kimmo's Avatar
 
Join Date: Dec 2009
Location: Melbourne, Oz
Bikes: velospace.org/viewcluster?c=873
Posts: 7,115
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Hands up if you've ever just bent the arm out to hit the bottom of the chainstay cause you don't have a strap
Kimmo is offline   Reply With Quote
Old 05-12-12, 08:34 PM   #7
LesterOfPuppets
cowboy, steel horse, etc
 
LesterOfPuppets's Avatar
 
Join Date: Sep 2008
Location: Rock Springs, WY
Bikes: My War
Posts: 27,215
Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
Quoted: 574 Post(s)
:hand raised:

Because of recent work I've been doing I've been considering some of the cone wrenches at the bottom of this page:

http://www.greenephantom.com/books_and_catalogs

I figured out a way to "rig" the bearing setting the other day but it would be so much easier with these in the future.
LesterOfPuppets is offline   Reply With Quote
Old 05-12-12, 08:35 PM   #8
hueyhoolihan
Senior Member
 
Join Date: Dec 2010
Location: Above ground, Walnut Creek, Ca
Bikes: 7⃥ 9 road bikes
Posts: 6,401
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
i've run single speed (SA) coaster brakes on a number of my 80's vintage lugged steel frames without trouble. and there was a time when i ran a seven speed Nexus with coaster brake on a custom bike with Reynolds 753 rear triangle. again, no problem.
hueyhoolihan is offline   Reply With Quote
Old 05-14-12, 11:33 AM   #9
garage sale GT
Banned
 
Join Date: May 2009
Bikes:
Posts: 2,078
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
If you really think your frame is so thin that the strap will crush it, why not put a strip of metal under the strap?
garage sale GT is offline   Reply With Quote
Old 05-14-12, 11:47 AM   #10
fietsbob 
coprolite
 
fietsbob's Avatar
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Bikes: 7
Posts: 22,221
Mentioned: 19 Post(s)
Tagged: 0 Thread(s)
Quoted: 1145 Post(s)
There are straps like I got with my Drum brake hubs with 2 bolt holes.

1 bolt holds on the strap, to the frame, for the 2nd, I substituted a pin with a ball catch ..

I made puncture repairs simpler.. just needed the axle bolt wrench..
fietsbob is offline   Reply With Quote
Old 05-14-12, 01:57 PM   #11
DLM
Senior Member
 
Join Date: Nov 2009
Bikes:
Posts: 78
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Definitely no problem putting a coaster on a cromoly mtn frame. HOWEVER, the axle length (OLD) on most coaster hubs is narrower than a mtn frame. You'll need to respace the hub's axle (good) or coldset the frame (not so good)
DLM is offline   Reply With Quote
Old 05-14-12, 02:20 PM   #12
DCB0
Banned.
 
Join Date: Apr 2011
Bikes: CCM Torino 76
Posts: 937
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I wouldn't worry about the stress the strap will put on the frame - it can handle it. However, does the 1988 Giant Sedona have horizontal or vertical dropouts? Later versions definitely had vertical dropouts, which makes them unsuitable for coaster brakes. If your older model has horizontal dropouts then it will work fine.
DCB0 is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 08:30 PM.