Author Topic: The Hot Mess - 1975 CB550F1 Frame/1981 CB650 Engine  (Read 126778 times)

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Offline P.abrera

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Re: The Hot Mess - 1975 CB550F1 Frame/1981 CB650 Engine
« Reply #125 on: August 23, 2015, 12:01:48 AM »

I dropped of my frame to my buddy Jay's shop, along with the GSXR front end and Cognito wheel hub, so he can do the frame mods (gusseting, bracing, mods for tank mount, etc.). Jay also has an account with Buchanan's so he's ordering my spokes and Sun Rims and lacing up the fronts.  I decided to go with the ContiRoadAttack2CR tires -- 18" front and rear.


What rim widths did you finally decide on?


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Offline SOHC4 Cafe Racer Fan

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Re: The Hot Mess - 1975 CB550F1 Frame/1981 CB650 Engine
« Reply #126 on: August 23, 2015, 12:25:24 AM »
« Last Edit: August 23, 2015, 01:03:49 PM by CB750 Cafe Racer Fan »
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 P.abrera

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The Hot Mess - 1975 CB550F1 Frame/1981 CB650 Engine
« Reply #127 on: August 24, 2015, 07:05:27 AM »
Im assuming you went 36 hole. A few less grams in spoke weight


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« Last Edit: August 24, 2015, 07:09:25 AM by P.abrera »

Offline SOHC4 Cafe Racer Fan

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Re: The Hot Mess - 1975 CB550F1 Frame/1981 CB650 Engine
« Reply #128 on: August 24, 2015, 07:38:17 PM »
No, I stayed with the 40-hole on the front.  The rear 750 hub has 40 holes, too, so no choice to change it.  I'll be losing weight on the rims (steel being replaced with aluminum) and the brake rotors, so I will be losing rotating mass. 
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 brandEn

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Re: The Hot Mess - 1975 CB550F1 Frame/1981 CB650 Engine
« Reply #129 on: August 25, 2015, 04:24:28 AM »
SUBSCRIBED!

Offline SOHC4 Cafe Racer Fan

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Re: The Hot Mess - 1975 CB550F1 Frame/1981 CB650 Engine
« Reply #130 on: August 26, 2015, 06:43:32 PM »
Hard parts harvested by Bill Benton (just waiting for them to make their way to the West Coast):

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 SOHC4 Cafe Racer Fan

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Re: The Hot Mess - 1975 CB550F1 Frame/1981 CB650 Engine
« Reply #131 on: August 28, 2015, 08:04:00 PM »
The bottom end is coming together.

image_zpscobhongt by Donald Leonhardt, on Flickr
« Last Edit: July 03, 2017, 11:14:04 AM by SOHC4 Cafe Racer Fan »
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 P.abrera

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The Hot Mess - 1975 CB550F1 Frame/1981 CB650 Engine
« Reply #132 on: August 28, 2015, 09:10:15 PM »
Lookin good! Any cosmetic finish planned for the outer cases? I quite like a "clean aluminum" look myself.

« Last Edit: August 28, 2015, 10:28:19 PM by P.abrera »

Offline brandEn

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Re: The Hot Mess - 1975 CB550F1 Frame/1981 CB650 Engine
« Reply #133 on: August 28, 2015, 09:19:12 PM »
Are you going to paint the bottom end?

Offline RAFster122s

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Re: The Hot Mess - 1975 CB550F1 Frame/1981 CB650 Engine
« Reply #134 on: August 28, 2015, 09:55:33 PM »
Doesn't look like it is going to see Glyptal in the cases and all the other candy some others put into a motor.
If it is assembled and not coming apart again he's likely to spay it assembled before moving to cylinder, head, and cover...
The cases casting often takes on a mottled look, just the nature of the alloy and technology of the day. The pout for a casting is pretty large contributing to the look.
MRieck has the billet cylinders but don't know if anyone will attempt billet or CNC cases. Imagine the cost of that motor!
David- back in the desert SW!

Offline SOHC4 Cafe Racer Fan

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Re: The Hot Mess - 1975 CB550F1 Frame/1981 CB650 Engine
« Reply #135 on: August 29, 2015, 12:49:24 AM »
The engine is going to be painted a VHT cast iron with metallic flecks (in assembled components).
« Last Edit: August 30, 2015, 12:13:35 AM by CB750 Cafe Racer Fan »
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 MessnerMoto

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Re: The Hot Mess - 1975 CB550F1 Frame/1981 CB650 Engine
« Reply #136 on: August 29, 2015, 04:18:44 AM »
I see questions of painting the engine came up. So I need to ask several
Is it better to paint engine in fully assembled or disassembled stage ? And same question for sand blasting the old paint from engine?
Can you just clear coat the engine? Dose that kind of clear coat exist? I really love the texture/color and feel of the old semi/polished
aluminum. And I would like to keep that color somehow....

Online calj737

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Re: The Hot Mess - 1975 CB550F1 Frame/1981 CB650 Engine
« Reply #137 on: August 29, 2015, 04:31:38 AM »
disassembled is "best" as you can be completely sure of getting it cleaned and painted/powder coated. Sand blasting is not recommended; its too coarse. Glass bead is better, but only if motor is completely disassembled and then THOROUGHLY rinsed/purged of media afterwards. Vapor Blasting/Wet Blasting is a highly desirable process, and it leaves a "peened" finish. You can choose any method to strip the cases to raw aluminum, but they are cast pieces. So to "polish" them is some work (vapor blast is great finish for this). You can then clear coat, or powder coat clear and leave them. Theres a thread from a member, Noblehops in "Services Offered" where he displays this process and before/after results.
'74 550 Build http://forums.sohc4.net/index.php?topic=126401.0
'73 500 Build http://forums.sohc4.net/index.php?topic=132935.0

"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline MessnerMoto

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Re: The Hot Mess - 1975 CB550F1 Frame/1981 CB650 Engine
« Reply #138 on: August 29, 2015, 04:40:55 AM »
disassembled is "best" as you can be completely sure of getting it cleaned and painted/powder coated. Sand blasting is not recommended; its too coarse. Glass bead is better, but only if motor is completely disassembled and then THOROUGHLY rinsed/purged of media afterwards. Vapor Blasting/Wet Blasting is a highly desirable process, and it leaves a "peened" finish. You can choose any method to strip the cases to raw aluminum, but they are cast pieces. So to "polish" them is some work (vapor blast is great finish for this). You can then clear coat, or powder coat clear and leave them. Theres a thread from a member, Noblehops in "Services Offered" where he displays this process and before/after results.

Thanks!

Vapor Blasting/Wet Blasting is same as soda blasting? I will find that thread!

Online calj737

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Re: The Hot Mess - 1975 CB550F1 Frame/1981 CB650 Engine
« Reply #139 on: August 29, 2015, 04:42:47 AM »
Soda blasting will remove paint, vapor blasting may not. But you can follow soda blasting with vapor blasting for the peened finish. The result is beautiful!
'74 550 Build http://forums.sohc4.net/index.php?topic=126401.0
'73 500 Build http://forums.sohc4.net/index.php?topic=132935.0

"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline SOHC4 Cafe Racer Fan

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Re: The Hot Mess - 1975 CB550F1 Frame/1981 CB650 Engine
« Reply #140 on: August 29, 2015, 10:39:55 AM »
The cases were hot dipped and scrubbed prior to reassembly of the bottom end.  They will be painted assembled.  The other engine component pieces will be cleaned and painted separately, as well.

I just got my Galfer wave rotors!

image_zpscqbj7rvm by Donald Leonhardt, on Flickr
« Last Edit: July 03, 2017, 10:33:26 AM by SOHC4 Cafe Racer Fan »
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 brandEn

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Re: The Hot Mess - 1975 CB550F1 Frame/1981 CB650 Engine
« Reply #141 on: August 29, 2015, 10:48:39 AM »
NICE! Should stop on a dime fo sho...

Offline Retro Rocket

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Re: The Hot Mess - 1975 CB550F1 Frame/1981 CB650 Engine
« Reply #142 on: August 29, 2015, 03:00:24 PM »
BLING... ;D  Looking good mate... ;)
750 K2 1000cc
750 F1 970cc
750 Bitsa 900cc
If You can't fix it with a hammer, You've got an electrical problem.

Offline SOHC4 Cafe Racer Fan

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Re: The Hot Mess - 1975 CB550F1 Frame/1981 CB650 Engine
« Reply #143 on: August 29, 2015, 03:47:45 PM »
Haha!  Nothing wrong with a little bike part porn!!   ;)
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 SOHC4 Cafe Racer Fan

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Re: The Hot Mess - 1975 CB550F1 Frame/1981 CB650 Engine
« Reply #144 on: August 29, 2015, 03:49:18 PM »
I heard from Mike that my cam and hardweld rockers are about a week out from Megacycle!!  And the rear hub and brake are on their way from Bill Benton (coming Tuesday)!!   ;D
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 Restoration Fan

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Ron

Stella - Logan's Senior Project    78 750K http://forums.sohc4.net/index.php?topic=141761.0

Logan's Reward - CB500 and CB550 Cafes    http://forums.sohc4.net/index.php/topic,147787.0.html

Offline RAFster122s

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Re: The Hot Mess - 1975 CB550F1 Frame/1981 CB650 Engine
« Reply #146 on: August 29, 2015, 07:14:34 PM »
Are they nicer than the EBC wave rotor?
I have one of them for the FunJimmy inspired R6 RSU fork swap.
Galfer makes very nice stuff,  extremely high quality. Better if you don't have any gold on the bike or that you don't want the brakes to catch your eye.



« Last Edit: August 29, 2015, 07:19:47 PM by RAF122S »
David- back in the desert SW!

Offline SOHC4 Cafe Racer Fan

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Re: The Hot Mess - 1975 CB550F1 Frame/1981 CB650 Engine
« Reply #147 on: August 29, 2015, 07:51:37 PM »
Are they nicer than the EBC wave rotor?
I have one of them for the FunJimmy inspired R6 RSU fork swap.
Galfer makes very nice stuff,  extremely high quality. Better if you don't have any gold on the bike or that you don't want the brakes to catch your eye.

Not sure how they compare to the EBC wave rotors. Galfer makes the Wave rotors and an upgraded Superbike rotor. I think these will be an improvement over used Suzuki GSXR rotors and give the bike a little pizzaz too.
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 riverfever

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Re: The Hot Mess - 1975 CB550F1 Frame/1981 CB650 Engine
« Reply #148 on: August 30, 2015, 02:05:16 PM »
Don this rotors are going to look splendid on the bike. Glad to hear/see it's coming along.
http://forums.sohc4.net/index.php?topic=127186.0

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Re: The Hot Mess - 1975 CB550F1 Frame/1981 CB650 Engine
« Reply #149 on: August 30, 2015, 04:44:07 PM »
I agree with riverfever that rotor is going to look great and perfm great.
Are you rebuilding the caliper?  Figure you are using the stock caliper.
David- back in the desert SW!