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


Go Back   > >

Framebuilders Thinking about a custom frame? Lugged vs Fillet Brazed. Different Frame materials? Newvex or Pacenti Lugs? why get a custom Road, Mountain, or Track Frame? Got a question about framebuilding? Lets discuss framebuilding at it's finest.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 02-11-13, 03:34 PM   #1
TampaRaleigh
Senior Member
Thread Starter
 
TampaRaleigh's Avatar
 
Join Date: Oct 2012
Location: Tampa, FL
Bikes: 1986 Raleigh Competition (Restored to Original), 1986 Cannonade SR400 (Updated to Dura Ace 7800)
Posts: 1,943
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Internal computer cable?

Have any of the "older" framebuilders ever heard of modifying a frame for internal computer wiring and permanent sensor mounts? I just picked up a 1985 Bridgestone 700, that has this type of modification. It was done some time before 1988, as the frame had a California registration decal from 1988 that was on top of the new paint.'







Unfortunately, the wires were cut at the downtube. I'm considering trying to track down a vintage Cateye so that I can restore this unusual piece.
TampaRaleigh is offline   Reply With Quote
Old 02-11-13, 03:38 PM   #2
unterhausen
Randomhead
 
Join Date: Aug 2008
Location: Happy Valley, Pennsylvania
Bikes:
Posts: 14,532
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
looks nice. I can't remember if I threw my Cateye away. Still worked, I just got tired of the magnet ring. Ok, so maybe mine was older than the one on your bike
unterhausen is offline   Reply With Quote
Old 02-11-13, 05:29 PM   #3
Andrew R Stewart 
Andrew R Stewart
 
Andrew R Stewart's Avatar
 
Join Date: Feb 2012
Location: Rochester, NY
Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Raleigh Pro, Trek Cycle Cross, Mongoose tomac ATB, GT Bravado ATB, JCP Folder
Posts: 6,612
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 10 Post(s)
Looks nice, yes, But this is why internal routed accessories are not always the best idea. If the guy who did the mods back pre 1988 knew of the next 25 years of computer changes do you think he would have dedicated the frame to what's now is an out of production computer? Andy.
Andrew R Stewart is offline   Reply With Quote
Old 02-11-13, 05:54 PM   #4
unterhausen
Randomhead
 
Join Date: Aug 2008
Location: Happy Valley, Pennsylvania
Bikes:
Posts: 14,532
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
the mounts are still useful, but the internal wiring isn't. OTOH, I was thinking the speed sensor wire would work for a rear light.
unterhausen is offline   Reply With Quote
Old 02-11-13, 09:15 PM   #5
TampaRaleigh
Senior Member
Thread Starter
 
TampaRaleigh's Avatar
 
Join Date: Oct 2012
Location: Tampa, FL
Bikes: 1986 Raleigh Competition (Restored to Original), 1986 Cannonade SR400 (Updated to Dura Ace 7800)
Posts: 1,943
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I'm going to TRY to splice a new Cateye wired computer with cadence to the old sensors. With a bit of luck, I might be able to keep it functional for another decade or 2.
TampaRaleigh is offline   Reply With Quote
Old 02-12-13, 08:10 AM   #6
tuz
Senior Member
 
Join Date: Dec 2006
Location: Toronto/Montréal
Bikes: Homemade mixte, track, commuter and road, Ryffranck road
Posts: 1,180
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Wow, that is pretty cool! When you REALLY like to know your speed, cadence, etc... Some pretty fancy one-off bikes have integrated power meters, this was a precursor. Are the cable routed in small tubes, or just floating inside?

My guess is that splicing the wires will work.
tuz is offline   Reply With Quote
Old 02-12-13, 08:16 AM   #7
TampaRaleigh
Senior Member
Thread Starter
 
TampaRaleigh's Avatar
 
Join Date: Oct 2012
Location: Tampa, FL
Bikes: 1986 Raleigh Competition (Restored to Original), 1986 Cannonade SR400 (Updated to Dura Ace 7800)
Posts: 1,943
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by tuz View Post
Wow, that is pretty cool! When you REALLY like to know your speed, cadence, etc... Some pretty fancy one-off bikes have integrated power meters, this was a precursor. Are the cable routed in small tubes, or just floating inside?

My guess is that splicing the wires will work.
They're just floating loose inside. I'll probably take it one small step further and put a layer of heat shrink tubing over the wires where they pass through the frame. Maybe even 2 layers where it goes through the bottom bracket shell. I'd rather not ever have to fix this part of it again.
TampaRaleigh is offline   Reply With Quote
Old 02-12-13, 08:58 AM   #8
Pars 
Senior Member
 
Pars's Avatar
 
Join Date: Jan 2008
Location: Aurora, IL
Bikes: '73 Raleigh RRA, 1986 Trek 500 commuter
Posts: 2,334
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I would guess that the wires on these are enamel coated, so you will need to scrape or burn that off in order to solder the splices. A solder pot would come in handy here
Pars is offline   Reply With Quote
Old 02-12-13, 09:47 AM   #9
ksisler
Senior Member
 
Join Date: Sep 2012
Bikes:
Posts: 1,647
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Quote:
Originally Posted by TampaRaleigh View Post
Have any of the "older" framebuilders ever heard of modifying a frame for internal computer wiring and permanent sensor mounts? I just picked up a 1985 Bridgestone 700, that has this type of modification. It was done some time before 1988, as the frame had a California registration decal from 1988 that was on top of the new paint.' Unfortunately, the wires were cut at the downtube. I'm considering trying to track down a vintage Cateye so that I can restore this unusual piece.
TR; worse case you might be able to get a grip on the wire bits that have been sheared off, pull them out enough to solder a bit of stout wire to it, and then use that as a pull string to drag in whatever wiring your future plans dictate.

I have always resisting running wires or cables through a frame loose; mostly because they would seem to flop around and fail or just make annoying noises. One of the suppliers sells long sticks of small brass tubing for this use and they or another supplier sells braze-on bits to terminate the tube on the main tubes.

The pix you provided show additional bits to bolt things on that look nifty to my eyes...
ksisler is offline   Reply With Quote
Old 02-12-13, 10:05 AM   #10
MassiveD
Senior Member
 
Join Date: Jul 2011
Bikes:
Posts: 2,341
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
If you thought it had anything to do with Bridgestone, you could contact grant petersen at rivendell and see if he knows anything.

If it is just a mater of fishing new wires through the bike, that can often be done with a vacuum or compressed air and some string. Get some floppy soft string and send it from hole to hole, then pull through an escalation of strings until you can pull the wire. With Di2, this kind of thing is common.

https://www.youtube.com/results?sear...ugh+bike+frame
MassiveD is offline   Reply With Quote
Old 02-12-13, 04:43 PM   #11
redtires
Extra Medium Member
 
redtires's Avatar
 
Join Date: Jul 2006
Location: Louisville, Co
Bikes: Arcalis Andorra 01 custom build, Specialized Stumpy
Posts: 1,824
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Wow...hadn't thought about this in years, but yes, I have done a few internal routing jobs waaaaay back in the day when the Avocet was THE computer to have. I ran the cable through the fork blade, through the crown and up the steerer tube. Had to do a few mods to the stem also. I've never seen one done for a rear mount/cadence sensor like that though....pretty slick!

It's "almost" too bad I use a Garmin now, otherwise I'd actually think about doing it again!
__________________
I like bikes.
redtires 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 06:56 PM.