Author Topic: 1972 CB500 Cafe/Brat Build  (Read 3130 times)

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Offline MWood

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1972 CB500 Cafe/Brat Build
« on: April 23, 2014, 07:11:16 PM »
Hey guys so I picked up a 1972 CB500 last fall for $400 in non running condition. The guy said he hooked a charger up to it backwards and fried the electrical. He replaced the starter solinoid and the rectifier but to no avail. I noticed right off the bat that the starter solinoid was hooked up backwards so after righting the wrong she fired up, smoked a little but cleared right up. It ran alright last fall but slowly felt like it was getting sluggish. I'm guessing it was the carbs?? So this winter I started the build off by disassembling the bike. So far I've rebuilt the carbs and cleaned most of the parts up. I'm up in the air about making it a cafe racer or going brat. I'm on a fairly tight budget but am willing to spend a lil more to make this thing look sick. Here are some of the things that I plan on doing:

Flat bratstyle seat with a kick in the rear

Hiding the electronics

Relocating key and start switch under the seat

Installing pod filters

Small rear fender with round tail light

Possibly no front fender and installing fork gators

New sleek headlight and brackets

Cafe or Brat style handle bars with minimal clutter

Dime City style speedo with indicator lights

And then painting everything (Color is yet to be determined)

I have tons of questions and I'm sure I will get tons of help and input from you guys!!  I will get pictures up ASAP!!


First question is what size battery can I go with? I want it to be as small as possible but still have enough juice to do the job. The bike has a kick start which I love using. I plan on using the kick start most of the time but we all know when she's having trouble starting it's nice to be able to just hit the switch!!
« Last Edit: April 24, 2014, 10:05:43 AM by MWood »

Offline SOHC4 Cafe Racer Fan

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Re: 1972 CB500 Cafe/Brat Build
« Reply #1 on: April 24, 2014, 03:33:46 PM »
Hey guys so I picked up a 1972 CB500 last fall for $400 in non running condition. The guy said he hooked a charger up to it backwards and fried the electrical. He replaced the starter solinoid and the rectifier but to no avail. I noticed right off the bat that the starter solinoid was hooked up backwards so after righting the wrong she fired up, smoked a little but cleared right up. It ran alright last fall but slowly felt like it was getting sluggish. I'm guessing it was the carbs?? So this winter I started the build off by disassembling the bike. So far I've rebuilt the carbs and cleaned most of the parts up. I'm up in the air about making it a cafe racer or going brat. I'm on a fairly tight budget but am willing to spend a lil more to make this thing look sick. Here are some of the things that I plan on doing:

Flat bratstyle seat with a kick in the rear

You should try to put as much padding in that flat seat as you can (and maybe a gel insert, too) or your butt will feel kicked in the rear.

It will be difficult to hide even a small lithium battery with a flat, brat-style seat.  You could mount it on the swingarm, or fabricate a tray (but it will be visible from the side since it will need enough depth to accommodate the battery).
1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline MWood

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Re: 1972 CB500 Cafe/Brat Build
« Reply #2 on: May 02, 2014, 11:08:18 AM »
Will this battery work out? I hope to use the kick start most of the time but it's nice knowing you have a solid battery to fall back on.

http://www.amazon.com/gp/aw/d/B005KLOYYC?pc_redir=1398757330&robot_redir=1


Offline SOHC4 Cafe Racer Fan

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Re: 1972 CB500 Cafe/Brat Build
« Reply #3 on: May 02, 2014, 11:27:36 AM »
Will this battery work out? I hope to use the kick start most of the time but it's nice knowing you have a solid battery to fall back on.

http://www.amazon.com/gp/aw/d/B005KLOYYC?pc_redir=1398757330&robot_redir=1

The 8 cell Ballistic should work just fine. I've heard some mixed reviews in the Ballistic brand as to quality control. You might also look at Alien Motion or Anti Gravity. If you don't mind spending more, Shorai quality is superb.
1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold