Go Back  Bike Forums > Bike Forums > Classic & Vintage
Reload this Page >

Wiring on fenders

Notices
Classic & Vintage This forum is to discuss the many aspects of classic and vintage bicycles, including musclebikes, lightweights, middleweights, hi-wheelers, bone-shakers, safety bikes and much more.

Wiring on fenders

Old 02-26-21, 08:20 AM
  #1  
Spellscape
Senior Member
Thread Starter
 
Spellscape's Avatar
 
Join Date: Feb 2021
Location: Ukraine
Posts: 94

Bikes: Union Sakai

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 26 Post(s)
Liked 15 Times in 9 Posts
Wiring on fenders

Hi allWhat's that sticky thing used to lay light wire inside fender?
Any advice on what to use now for same thing?
Spellscape is online now  
Old 02-26-21, 08:45 AM
  #2  
clubman 
Youngman Grand
 
clubman's Avatar
 
Join Date: Jan 2010
Location: Nova Scotia
Posts: 7,250

Bikes: roadsters, club bikes, fixed and classic

Mentioned: 103 Post(s)
Tagged: 0 Thread(s)
Quoted: 1693 Post(s)
Liked 820 Times in 546 Posts
Buy some quality foil tape, the waterproof type obviously. I've repaired broken mudguards from the inside with it. The good stuff usually has a blue plastic film that you peel off first.
clubman is offline  
Likes For clubman:
Old 02-26-21, 09:04 AM
  #3  
scarlson 
Senior Member
 
scarlson's Avatar
 
Join Date: Jun 2010
Location: Medford MA
Posts: 1,263

Bikes: Ron Cooper touring, 1959 Jack Taylor 650b ladyback touring tandem, Vitus 979, Joe Bell painted Claud Butler Dalesman, Colin Laing curved tube tandem, heavily-Dilberted 1982 Trek 6xx, René Herse tandem

Mentioned: 45 Post(s)
Tagged: 0 Thread(s)
Quoted: 551 Post(s)
Liked 664 Times in 384 Posts
I've used silicone RTV to seal and stick wires in fenders. I like Hondabond HT silicone because it cures to a higher hardness than the generic stuff, but it is overpriced.
__________________
Owner & co-founder, Cycles René Hubris. Unfortunately attaching questionable braze-ons to perfectly good frames since about 2015. With style.
scarlson is offline  
Old 02-26-21, 03:10 PM
  #4  
francophile 
PM me your cotters
 
francophile's Avatar
 
Join Date: Jun 2015
Location: ATL
Posts: 3,765
Mentioned: 73 Post(s)
Tagged: 0 Thread(s)
Quoted: 1072 Post(s)
Liked 465 Times in 361 Posts
You may notice the metal rollover on the side with the sticky stuff has an opening just wide enough to slide a 16ga or smaller wire inside Some manufacturers simply crimped the edge of the channel every 3-6" to prevent it from popping back out and make it more serviceable.

Foil tape or a silicone bead could work, but I tend to follow the method I've typically seen used, with the periodic crimp. Let me see if I can find a pic of what I'm talking about.
__________________
███████████████

francophile is offline  
Old 02-26-21, 03:24 PM
  #5  
francophile 
PM me your cotters
 
francophile's Avatar
 
Join Date: Jun 2015
Location: ATL
Posts: 3,765
Mentioned: 73 Post(s)
Tagged: 0 Thread(s)
Quoted: 1072 Post(s)
Liked 465 Times in 361 Posts
Here you go. From an early 70s Peugeot PX-8 fender with light provisions.

Folding out the rolled edge enough to tuck a wire into it, then crimping the rolled edge of the fender as shown at the arrows is more than enough to keep your wire safe. No sticky stuff, no tape, no adhesive or sealant required. Totally invisible from the outside when done correctly.

If it was good enough for the OEM, it's good enough for me.

__________________
███████████████

francophile is offline  
Old 02-26-21, 03:40 PM
  #6  
nlerner
Senior Member
 
Join Date: Dec 2005
Posts: 14,270
Mentioned: 343 Post(s)
Tagged: 0 Thread(s)
Quoted: 2198 Post(s)
Liked 1,788 Times in 925 Posts
I've done both the glue method and the tape method; glue seemed to hold up better through winter commuting.
nlerner is offline  
Old 02-26-21, 03:44 PM
  #7  
bertinjim 
Senior Member
 
bertinjim's Avatar
 
Join Date: Mar 2012
Location: Niagara Region, Canada
Posts: 1,281

Bikes: 1960s Bertin C37, 1973 Carre Bertin C 37, 1970s Carlton Kermesse, 1982 Peugeot PB 12

Mentioned: 41 Post(s)
Tagged: 0 Thread(s)
Quoted: 272 Post(s)
Liked 104 Times in 74 Posts
Spellscape-

Francophile's tuck and crimp method works perfectly and leaves no residue to catch road debris and salt. It also maximizes the space between the tire and the fender and reduces the chance of a stone or such like jamming between them. I've used that method on two bikes and it is perfectly clean, elegant and serviceable with the advantage of being easily reversible, if ever necessary.
bertinjim is offline  
Likes For bertinjim:
Old 02-26-21, 04:11 PM
  #8  
scarlson 
Senior Member
 
scarlson's Avatar
 
Join Date: Jun 2010
Location: Medford MA
Posts: 1,263

Bikes: Ron Cooper touring, 1959 Jack Taylor 650b ladyback touring tandem, Vitus 979, Joe Bell painted Claud Butler Dalesman, Colin Laing curved tube tandem, heavily-Dilberted 1982 Trek 6xx, René Herse tandem

Mentioned: 45 Post(s)
Tagged: 0 Thread(s)
Quoted: 551 Post(s)
Liked 664 Times in 384 Posts
The problem I've had with crimping is that I sometimes nick the wire. Depends on how the beads on the edges of your fenders are done. Some are better than others when it comes to being friendly to wires. I've found VO fenders to be particularly bad in this regard, which is why I used silicone in the first place.
__________________
Owner & co-founder, Cycles René Hubris. Unfortunately attaching questionable braze-ons to perfectly good frames since about 2015. With style.
scarlson is offline  
Old 02-26-21, 04:13 PM
  #9  
Spellscape
Senior Member
Thread Starter
 
Spellscape's Avatar
 
Join Date: Feb 2021
Location: Ukraine
Posts: 94

Bikes: Union Sakai

Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 26 Post(s)
Liked 15 Times in 9 Posts
I have this on 2 bikes. Both not only have this tar but also all use rim of fender as route. This one also had metal springs to fix wire. But anyway this thing was used too.
I Do not intend to use it in same messy way as "factory" sealing job for sure, just wanted to know all options.
Spellscape is online now  
Old 02-26-21, 04:20 PM
  #10  
francophile 
PM me your cotters
 
francophile's Avatar
 
Join Date: Jun 2015
Location: ATL
Posts: 3,765
Mentioned: 73 Post(s)
Tagged: 0 Thread(s)
Quoted: 1072 Post(s)
Liked 465 Times in 361 Posts
Originally Posted by scarlson View Post
The problem I've had with crimping is that I sometimes nick the wire. Depends on how the beads on the edges of your fenders are done. Some are better than others when it comes to being friendly to wires. I've found VO fenders to be particularly bad in this regard, which is why I used silicone in the first place.
The crimp on the OEM fender above still has a gap between the rolled edge and the inside edge of the fender, maybe 1mm. If you're crimping metal-to-metal such that you're able to nick a wire or pierce the wire casing, you're crimping much farther than I've ever seen any OEM do.

While I've never had it happen myself and never tried this with a modern, aftermarket fender, I can think of a couple of potential workarounds: Crimp before running your cable, or alternately run some fishing line or similar pull cord through the groove, crimp, then tie your wire to the line and fish it through.
__________________
███████████████

francophile is offline  
Old 02-26-21, 08:05 PM
  #11  
gugie 
Dilberteur at large
 
gugie's Avatar
 
Join Date: Jul 2014
Location: Portland, OR
Posts: 9,130

Bikes: It's complicated.

Mentioned: 997 Post(s)
Tagged: 0 Thread(s)
Quoted: 3218 Post(s)
Liked 1,494 Times in 763 Posts
Originally Posted by scarlson View Post
The problem I've had with crimping is that I sometimes nick the wire. Depends on how the beads on the edges of your fenders are done. Some are better than others when it comes to being friendly to wires. I've found VO fenders to be particularly bad in this regard, which is why I used silicone in the first place.
The gap in the hem on VO fenders is smaller than Honjo's, so there's less room for wiring, but it can be done. Vintage Lefol's have an even bigger hem. @southpawboston is the wiring master, peruse his Flickr albums for great tips.
__________________
If someone tells you that you have enough bicycles and you don't need any more, stop talking to them. You don't need that kind of negativity in your life.
gugie is offline  
Likes For gugie:
Old 02-27-21, 10:31 AM
  #12  
southpawboston
Senior Member
 
southpawboston's Avatar
 
Join Date: Aug 2008
Location: Somerville, MA and Catskill Mtns
Posts: 4,138
Mentioned: 29 Post(s)
Tagged: 0 Thread(s)
Quoted: 66 Post(s)
Liked 126 Times in 60 Posts
Originally Posted by nlerner View Post
I've done both the glue method and the tape method; glue seemed to hold up better through winter commuting.
I've never had good luck with tape, but I've had great luck with Goop brand adhesive. If the fender has tightly crimped edges (like VO), this is my go-to method. More recently I've taken to gluing 1" lengths of aluminum tubing (I get them from Blick Art) instead of gluing the wire itself, and running the wire through the conduits, so the wire can be replaced later on if needed. The Goop is so tenacious that sometimes I've been unable to remove the wire years later.



Originally Posted by scarlson View Post
The problem I've had with crimping is that I sometimes nick the wire. Depends on how the beads on the edges of your fenders are done. Some are better than others when it comes to being friendly to wires. I've found VO fenders to be particularly bad in this regard, which is why I used silicone in the first place.
Agreed, VO fender edges tend to be crimped pretty tight. Honjo's are generally nice and round and have plenty of room for wire. But for fenders with an open edge, crimping the edge after wiring to hold the wiring in place doesn't have to nick the wire, you can place little pieces of shrink tubing strategically along the wire where you want to crimp, to further protect the wire. I also do this wherever the wire enters or exits the rolled edge, where its not possible to place a normal grommet:



I also re-purpose electrical ring terminals as wire guides to help keep the wire tucked up under the fender where it has to cross over from the edge to the center, such as where it enters the taillight:


Last edited by southpawboston; 02-27-21 at 10:41 AM.
southpawboston is offline  
Likes For southpawboston:

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


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright © 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.