Page 1 of 2 1 2 LastLast
Results 1 to 20 of 26
  1. #1
    Join Date
    May 2009
    Location
    Hillcrest
    Age
    64
    Posts
    19,436
    Thanked: 8421

    Default I just couldn't stop myself - so I put a brake on things.

    I just couldn't stop myself - so I put a brake on things.

    I am building a bike.

    The bike has terrible backpedal back brakes and no front brakes.

    I have google, a few Rands and a new Gas Torch.

    Caliper brakes are useless. V-Brakes are excellent, but not as good as disks.

    The bike cant take disks cause it has two rear sprockets, one either side.

    So, lets modify a bike frame to take V-Brakes.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	IMG_6678.jpg 
Views:	301 
Size:	374.1 KB 
ID:	619384   Click image for larger version. 

Name:	IMG_6688.jpg 
Views:	275 
Size:	271.6 KB 
ID:	619385   Click image for larger version. 

Name:	IMG_6781 (1).jpg 
Views:	282 
Size:	291.8 KB 
ID:	619386  
    Cheers

    ZS5KAD
    3 Land Rover V8's
    NA - TwinTurbo - SuperCharged
    A V6 and an inline 4

    If you fly or drive to an anti-Fracking meeting, you have no business being there and you wont get my ear......

  2. #2
    Join Date
    Aug 2013
    Location
    Somerset West
    Age
    35
    Posts
    591
    Thanked: 303

    Default Re: I just couldn't stop myself - so I put a brake on things.

    Kief!
    Remember to add a hole for the return spring to slot into.

  3. The Following User Says Thank You to PhlippieV For This Useful Post:


  4. #3
    Join Date
    Sep 2019
    Location
    Pretoria East
    Age
    48
    Posts
    810
    Thanked: 1475

    Default Re: I just couldn't stop myself - so I put a brake on things.

    Is it still going to be a bicycle by the time you have finished fiddling with it?

  5. #4
    Join Date
    May 2009
    Location
    Hillcrest
    Age
    64
    Posts
    19,436
    Thanked: 8421

    Default Re: I just couldn't stop myself - so I put a brake on things.

    Brazed on the threaded Hex bar - cut to size - clean - paint.

    Make adapter between V-brake mount and Hex bar.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	IMG_6786.jpg 
Views:	164 
Size:	271.3 KB 
ID:	619390   Click image for larger version. 

Name:	IMG_6782.jpg 
Views:	160 
Size:	226.5 KB 
ID:	619391   Click image for larger version. 

Name:	Picture1.png 
Views:	155 
Size:	95.9 KB 
ID:	619392  
    Last edited by Fluffy; 2021/06/18 at 12:01 PM.
    Cheers

    ZS5KAD
    3 Land Rover V8's
    NA - TwinTurbo - SuperCharged
    A V6 and an inline 4

    If you fly or drive to an anti-Fracking meeting, you have no business being there and you wont get my ear......

  6. #5
    Join Date
    Nov 2015
    Location
    Edenvale
    Age
    55
    Posts
    1,287
    Thanked: 1346

    Default Re: I just couldn't stop myself - so I put a brake on things.

    Wouldn't it be better to have front brakes on your bike?
    You can easily change the front fork over for a unit that has mountings for a hydraulic caliper and fit a system like the mountain bikes use. On my bike I changed from the standard 110mm disc to a 130mm disc on the front. That not only gave me better ultimate stopping power but also much better feel to modulate the amount of braking depending on the surface.
    The humble person makes room for progress; the arrogant person believes they’re already there.
    2004 Disco 2 Td5
    Suzuki SJ410 (being rebuild)
    VW Touran 2.0Tdi
    Lotus 7 (replica - not a kit)
    Freelance Photographer (part time)
    Member Of: Southern African Freelancers' Association

  7. The Following User Says Thank You to Paul#25 For This Useful Post:


  8. #6
    Join Date
    Sep 2006
    Location
    Robertson/ Larissa, Greece
    Age
    57
    Posts
    6,190
    Thanked: 5114

    Default Re: I just couldn't stop myself - so I put a brake on things.

    Quote Originally Posted by Fluffy View Post
    Caliper brakes are useless. V-Brakes are excellent, but not as good as disks.
    Excuse my ignorance but what are caliper brakes if not discs?
    There is never a right time to do the wrong thing and never a wrong time to do the right thing!

  9. #7
    Join Date
    May 2009
    Location
    Hillcrest
    Age
    64
    Posts
    19,436
    Thanked: 8421

    Default Re: I just couldn't stop myself - so I put a brake on things.

    Quote Originally Posted by Paul#25 View Post
    Wouldn't it be better to have front brakes on your bike?
    You can easily change the front fork over for a unit that has mountings for a hydraulic caliper and fit a system like the mountain bikes use. On my bike I changed from the standard 110mm disc to a 130mm disc on the front. That not only gave me better ultimate stopping power but also much better feel to modulate the amount of braking depending on the surface.
    Oh yea of little faith.

    I have to be careful with disks on the front. Had to upgrade to a Rock Shock. People have no idea of the forces involved where the fork tube interface to the frame. If the weld on the tube isn't perfect it can fracture during heavy breaking with devastating results.
    Attached Images Attached Images  
    Cheers

    ZS5KAD
    3 Land Rover V8's
    NA - TwinTurbo - SuperCharged
    A V6 and an inline 4

    If you fly or drive to an anti-Fracking meeting, you have no business being there and you wont get my ear......

  10. #8
    Join Date
    Nov 2015
    Location
    Edenvale
    Age
    55
    Posts
    1,287
    Thanked: 1346

    Default Re: I just couldn't stop myself - so I put a brake on things.

    Quote Originally Posted by Fluffy View Post
    Oh yea of little faith.

    I have to be careful with disks on the front. Had to upgrade to a Rock Shock. People have no idea of the forces involved where the fork tube interface to the frame. If the weld on the tube isn't perfect it can fracture during heavy breaking with devastating results.
    There you go Fluffy, you will be doing "endo's" in no time. Next you will need a steering damper fitted to dampen out the high speed head-shake.
    The humble person makes room for progress; the arrogant person believes they’re already there.
    2004 Disco 2 Td5
    Suzuki SJ410 (being rebuild)
    VW Touran 2.0Tdi
    Lotus 7 (replica - not a kit)
    Freelance Photographer (part time)
    Member Of: Southern African Freelancers' Association

  11. #9
    Join Date
    May 2009
    Location
    Hillcrest
    Age
    64
    Posts
    19,436
    Thanked: 8421

    Default Re: I just couldn't stop myself - so I put a brake on things.

    Quote Originally Posted by Francois Theron View Post
    Excuse my ignorance but what are caliper brakes if not discs?
    Quite correct. In Bicycle terms there are three basic types.

    Caliper (what we were used to 40 years ago)
    V-Brakes (what I am adding)
    Disks - go figure
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	Caliper.jpg 
Views:	88 
Size:	5.4 KB 
ID:	619429   Click image for larger version. 

Name:	V-brake.jpg 
Views:	89 
Size:	13.8 KB 
ID:	619430  
    Cheers

    ZS5KAD
    3 Land Rover V8's
    NA - TwinTurbo - SuperCharged
    A V6 and an inline 4

    If you fly or drive to an anti-Fracking meeting, you have no business being there and you wont get my ear......

  12. #10
    Join Date
    May 2009
    Location
    Hillcrest
    Age
    64
    Posts
    19,436
    Thanked: 8421

    Default Re: I just couldn't stop myself - so I put a brake on things.

    Quote Originally Posted by Paul#25 View Post
    There you go Fluffy, you will be doing "endo's" in no time. Next you will need a steering damper fitted to dampen out the high speed head-shake.
    Now that you mention it.
    Cheers

    ZS5KAD
    3 Land Rover V8's
    NA - TwinTurbo - SuperCharged
    A V6 and an inline 4

    If you fly or drive to an anti-Fracking meeting, you have no business being there and you wont get my ear......

  13. #11
    Join Date
    Jul 2010
    Location
    Pinetown
    Age
    72
    Posts
    2,748
    Thanked: 2591

    Default Re: I just couldn't stop myself - so I put a brake on things.

    Traction control coming soon ?
    Peter Hutchison
    Answering the call of the wild is just so much beter than answering the telephone.
    [B][SIZE=2][FONT=Calibri][SIZE=2][B]ISUZU KB 280 DT LE
    Modified Glider Hunter trailer fitted with RTT.
    Platkar = Chevy Spark 1.2

  14. #12
    Join Date
    May 2009
    Location
    Hillcrest
    Age
    64
    Posts
    19,436
    Thanked: 8421

    Default Re: I just couldn't stop myself - so I put a brake on things.

    And the V-Brake final install.
    Attached Images Attached Images  
    Cheers

    ZS5KAD
    3 Land Rover V8's
    NA - TwinTurbo - SuperCharged
    A V6 and an inline 4

    If you fly or drive to an anti-Fracking meeting, you have no business being there and you wont get my ear......

  15. #13
    Join Date
    Apr 2021
    Location
    Pretoria
    Age
    36
    Posts
    130
    Thanked: 155

    Default Re: I just couldn't stop myself - so I put a brake on things.

    Quote Originally Posted by Fluffy View Post
    Quite correct. In Bicycle terms there are three basic types.

    Caliper (what we were used to 40 years ago)
    V-Brakes (what I am adding)
    Disks - go figure

    just a small correction, the correct term is “cantilever” brakes, not calliper brakes. Regardless, they are pretty useless at stopping anything, amd if they just get a hint of moisture they stop working all together.

  16. #14
    Join Date
    May 2009
    Location
    Hillcrest
    Age
    64
    Posts
    19,436
    Thanked: 8421

    Default Re: I just couldn't stop myself - so I put a brake on things.

    Quote Originally Posted by Scheepers85 View Post
    just a small correction, the correct term is “cantilever” brakes, not calliper brakes. Regardless, they are pretty useless at stopping anything, amd if they just get a hint of moisture they stop working all together.

    A quick Google reveals
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	Cantilever.png 
Views:	125 
Size:	274.0 KB 
ID:	619445   Click image for larger version. 

Name:	Caliper.png 
Views:	107 
Size:	248.8 KB 
ID:	619446  
    Cheers

    ZS5KAD
    3 Land Rover V8's
    NA - TwinTurbo - SuperCharged
    A V6 and an inline 4

    If you fly or drive to an anti-Fracking meeting, you have no business being there and you wont get my ear......

  17. #15
    Join Date
    Oct 2018
    Location
    Magaliesig
    Age
    62
    Posts
    431
    Thanked: 715

    Default Re: I just couldn't stop myself - so I put a brake on things.

    Awesome project, Keith. Many of many talents, I see. Now how about an Arduino-based ECU?
    Rob Kirk

    Amarok V6.

  18. The Following User Says Thank You to Ama-newbie For This Useful Post:


  19. #16
    Join Date
    Aug 2013
    Location
    Somerset West
    Age
    35
    Posts
    591
    Thanked: 303

    Default I just couldn't stop myself - so I put a brake on things.

    Quote Originally Posted by Fluffy View Post
    Oh yea of little faith.

    I have to be careful with disks on the front. Had to upgrade to a Rock Shock. People have no idea of the forces involved where the fork tube interface to the frame. If the weld on the tube isn't perfect it can fracture during heavy breaking with devastating results.
    That Schwinn frame might crack at the head tube if you ride it into a wall. At speed.
    But you will break traction or flip over the bars long before you crack it from braking forces.

    Take it from someone who tries really really hard to break every frame I ride. And those that I have broken, have all been at the seat tube, BB or rear triangles.
    Last edited by PhlippieV; 2021/06/18 at 01:41 PM.

  20. The Following User Says Thank You to PhlippieV For This Useful Post:


  21. #17
    Join Date
    Sep 2006
    Location
    Robertson/ Larissa, Greece
    Age
    57
    Posts
    6,190
    Thanked: 5114

    Default Re: I just couldn't stop myself - so I put a brake on things.

    Quote Originally Posted by Fluffy View Post
    Quite correct. In Bicycle terms there are three basic types.

    Caliper (what we were used to 40 years ago)
    V-Brakes (what I am adding)
    Disks - go figure
    Quote Originally Posted by Scheepers85 View Post
    just a small correction, the correct term is “cantilever” brakes, not calliper brakes. Regardless, they are pretty useless at stopping anything, amd if they just get a hint of moisture they stop working all together.
    If you will bear with me. Why is the one so much better than the other? The friction material looks the same. Do you just exert more pressure with the v brakes due to the operating mechanism design?
    There is never a right time to do the wrong thing and never a wrong time to do the right thing!

  22. #18
    Join Date
    Jun 2011
    Location
    Stellenbosch
    Age
    36
    Posts
    493
    Thanked: 1057

    Default Re: I just couldn't stop myself - so I put a brake on things.

    Quote Originally Posted by Francois Theron View Post
    If you will bear with me. Why is the one so much better than the other? The friction material looks the same. Do you just exert more pressure with the v brakes due to the operating mechanism design?
    V brakes have much more leverage than the cantilever brakes

  23. The Following 3 Users Say Thank You to niclemaitre For This Useful Post:


  24. #19
    Join Date
    May 2009
    Location
    Hillcrest
    Age
    64
    Posts
    19,436
    Thanked: 8421

    Default Re: I just couldn't stop myself - so I put a brake on things.

    Quote Originally Posted by Francois Theron View Post
    If you will bear with me. Why is the one so much better than the other? The friction material looks the same. Do you just exert more pressure with the v brakes due to the operating mechanism design?
    Distance from - where it connects to the frame - to the pads.

    On the one you have a single bolt (6mm) mount at the top and the pads are about 100mm away. That's a long lever and the whole brake mechanism just buckles and twists because of the leverage.

    On the other one, each arm has a 10mm attachment point to the fame and the distance between the mount point and the pad is 2-30mm. Also the fulcrum (mounting point) has a large lever effect to the advantage of pressure on the pads.
    Attached Images Attached Images  
    Cheers

    ZS5KAD
    3 Land Rover V8's
    NA - TwinTurbo - SuperCharged
    A V6 and an inline 4

    If you fly or drive to an anti-Fracking meeting, you have no business being there and you wont get my ear......

  25. The Following 2 Users Say Thank You to Fluffy For This Useful Post:


  26. #20
    Join Date
    Jan 2012
    Location
    King Williams Town
    Age
    53
    Posts
    8,190
    Thanked: 1994

    Default Re: I just couldn't stop myself - so I put a brake on things.

    Keith...

    1)Just pivot a long piece of wood onto frame ie see saw. Lift one side of wood to allow other side to scrape on ground... Friction brakes.

    2) extend soles under shoes and use that for brakes.

    Both points have saved you money so you can purchase that oxycetalene pack you wanted.
    Isuzu STD 2.5d 2x4 rear diffy lock
    2x spotlight,2x fog lights
    215/80/R15c tyres
    1 x great humourous driver
    GPS,Bluetooth
    Eagle eye dash cam --stolen ..bought another one
    snorkel soon
    Craig
    I DON'T LIVE IN AFRICA,AFRICA LIVES IN ME- Kyle my son

Page 1 of 2 1 2 LastLast

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •