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 02-21-09, 09:43 AM   #1
daven1986
Senior Member
Thread Starter
 
Join Date: Feb 2008
Location: UK
Bikes:
Posts: 2,324
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Completed: Flat to drop conversion with pictures

Hi all,

You may remember my threads about converting my flat bar specialized globe sport disc to drop handlebars. I have just completed the build except for wrapping the bars - pending a test ride, and will post pictures when that is done. I went for bar end shifters and tektro 520 rl brakes on a nitto randonneur 450mm bar.

Things I have learnt that might be useful for others attempting this:
- Get a proper cable cutter! I used normal cable cutters and although they worked it was a bit of a hassle.
- Remember how the front derailleur cable was routed, mine went up then down, but at first I was trying to route it just up!
- The gear cables go through a small hole under the bottom bracket, don't just lay the cables over them as I did at first!

Tools used:
- Allen keys (for brakes, gears and stem)
- Cable cutters
- Pliers (for the end caps)
- Knife and scissors (for the bar tape)

It took me a few hours to do this morning and I am very pleased with the results so far.
You may notice lots of blue on there! I didn't have any black electrical tape or any black cable ties, so I used blue. I quite like the effect but may change it if / when I get black bits! Also I wasn't 100% pleased with my bar wrapping but it isn't too bad. I used a lot of electrical tape at the ends as I was pretty bad at cutting the ends, the right side went much better than the left (I did the left first!).

Other things you will require (as well as the tools above) are:
- Electrical tape - a colour to compliment / match your bar tape
- Bar tape
- Brake cable housing
- Gear cable housing
- Brake cable - with the pear drop end
- Gear cable - if you are going to route the cable all the way under the bar tape then you need a tandem gear cable for the rear derailleur
- Cable end caps
- Ferrules for brake and gear cables

Tutorial:
First you need to choose what brake levers and gear shifters you are going for. I chose bar end shifters for the cost. You need the correct type of brake lever, as I had linear pull brakes I needed a v-brake compatible lever, if you have cantilever brakes you should be fine with normal drop bar brake levers. If you go with road shifters be aware that you may have to change your cassettes. Again bar end shifters helped reduce the cost of this.

You also need to choose what handlebars you are going to get. You either need to get a bar that is the same diameter as your current stem or you will need a new stem, I went with the Nitto Randonneur bars as they fit my current stem. Don't be tempted to try to fit a different diameter bar into your stem as you could fatigue the bar over time and cause a failure.

1) Remove the current cables
2) Remove the cable housing
3) Remove the handlebars
4) Install the brake levers on the handlebars
5) Install the handlebars in the stem (change the stem if necessary)
6) Measure the front brake cable housing - if routing the cable on the right of the frame then turn the handlebars fully to the left when measuring to ensure enough housing (vice versa for the left side). You can use electrical tape to secure the housing to the bars while you measure
7) Put the ferrule on the end
8) Route the cable through the brake lever - put a little lubricant on some paper towel and wipe it along the cable.
9) Push it all the way through the cable housing until it is all through
10) Make sure the inline adjuster at the brake is fully screwed in, and attach the cable to the brake so that the brake is held close enough to the rim / disc to work. You can then make finer adjustments when you have finished.
11) Repeat steps 6 to 10 for the rear brake
12) Measure the rear gear cable housing there will be two parts, one for the front then the cable runs bare along the downtube and chainstay and a final piece of housing where it connects to the derailleur. Make sure the last piece is the same size as it was previously
13) Do the same as for the brake cables, but only lube the cable that is inside the housing, also make sure to route the cable through the hole under the bottom bracket
14) Connect the cable to the rear derailleur so that it is just taut
15) Spin the pedals and try shifting, if the some shifts are being missed out then use the inline adjuster to adjust the cable until the shifts are smooth
16) Repeat steps 12 to 15 for the front derailleur, but remember there will only be one section of housing, and there isn't usually a cable adjuster at the front derailleur. My bar end shifter is friction shifting for the front derailleur so it needed minimal setup, you should consult other guides to correctly adjust your front derailleur
17) Cut the remainder of cable off the ends and finish them with an end cap
18) Go for a test ride, make sure everything is comfortable and working
19) Tape the bars - there are other guides for this but one change with the bar end shifters that I did was to begin taping as suggested by the guides but instead of pushing the excess in with a bar end I cut it straight and finished it with some electrical tape

This is pretty much what I did and I suggest consulting other guides for the intricate details.

Comments & Criticism appreciated.

Thanks

Daven






Last edited by daven1986; 02-22-09 at 03:55 AM. Reason: Pictures
daven1986 is offline   Reply With Quote
Old 02-21-09, 12:42 PM   #2
TempestRS4
Senior Member
 
Join Date: Sep 2008
Bikes:
Posts: 49
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Looking good! Nice job
TempestRS4 is offline   Reply With Quote
Old 02-21-09, 12:45 PM   #3
daven1986
Senior Member
Thread Starter
 
Join Date: Feb 2008
Location: UK
Bikes:
Posts: 2,324
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
thanks had a ride and the randonneur bars are definitely more suited to riding in the drops than on the hoods but the position is good even though the bike started life as a hybrid. I'm very pleased for a first attempt at any sort of bike work.
daven1986 is offline   Reply With Quote
Old 02-21-09, 01:50 PM   #4
AndrewP
Senior Member
 
Join Date: Sep 2001
Location: Montreal
Bikes: Peugeot Hybrid, Minelli Hybrid
Posts: 6,521
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I like the color scheme. A Podium bottle would match the tape. Install cross brakes, you will then get more practice a wrapping the bars. Is the stem the same length as before?
AndrewP is offline   Reply With Quote
Old 02-21-09, 01:55 PM   #5
Retro Grouch 
Senior Member
 
Retro Grouch's Avatar
 
Join Date: Feb 2004
Location: St Peters, Missouri
Bikes: Rans Rockst (Retro rocket) Rans Enduro Sport (Retro racket) Catrike 559, Merin Bear Valley (beater bike).
Posts: 26,543
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 62 Post(s)
I'm interested in the brakes. Are you satisfied with how well they operate?
Retro Grouch is offline   Reply With Quote
Old 02-21-09, 01:57 PM   #6
daven1986
Senior Member
Thread Starter
 
Join Date: Feb 2008
Location: UK
Bikes:
Posts: 2,324
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I have to say the colour scheme is definitely growing on me! The stem is the same one as before - hence the nitto randonneur bars, they were the only ones I could find that were nice and the right diameter!

Retro Grouch: the brakes seem to be working very well. They can be used from the hoods or the drops and I can feel roughly the same stopping power as with the previous brakes. Considering the cost (17) I am very pleased with them.
daven1986 is offline   Reply With Quote
Old 02-21-09, 03:48 PM   #7
desertdork
just pokin' along
 
desertdork's Avatar
 
Join Date: Aug 2008
Location: the desert
Bikes:
Posts: 1,073
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Good post. With the frequent inquiries about drop conversions, I have been intending on posting my experience with a conversion.
desertdork is offline   Reply With Quote
Old 02-21-09, 03:53 PM   #8
daven1986
Senior Member
Thread Starter
 
Join Date: Feb 2008
Location: UK
Bikes:
Posts: 2,324
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks, I did it as many of the questions I had weren't answered anywhere and I felt a bit bad opening so many threads! I will update the first post with a tutorial when I get the time.
daven1986 is offline   Reply With Quote
Old 02-21-09, 09:17 PM   #9
Mr. Underbridge
Senior Member
 
Join Date: Mar 2007
Location: Reston, VA
Bikes: 2003 Giant OCR2
Posts: 2,369
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Congrats!

And I gotta say, the blue looks kinda tight. Nice job.
Mr. Underbridge is offline   Reply With Quote
Old 02-22-09, 03:57 AM   #10
daven1986
Senior Member
Thread Starter
 
Join Date: Feb 2008
Location: UK
Bikes:
Posts: 2,324
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks Mr. Underbridge.

I have now added the tutorial
daven1986 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 04:45 PM.