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Author Topic: Blackfin CB750 F1 BLASTER  (Read 28082 times)

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Offline Blackfin5

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Re: Blackfin CB750 F1 BLASTER
« Reply #25 on: February 15, 2014, 06:29:15 AM »
That sounds scary.  Will search those out.  Thx
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Offline Blackfin5

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Re: Blackfin CB750 F1 BLASTER
« Reply #26 on: February 19, 2014, 08:21:45 AM »
Nothing substantial.  Covers going back on and getting the front end together.  Rearsets and headlight ears go on today.  I ended up with the Emgo ears.  I saw nothing I really liked except for the Joker ears, but they are $200+.  Seriously?  Wiring should be buttoned up too.  Brake calipers broken down and to the powder coater with the discs.  Then off to Godfrey.







The ever vigilant Jasmin.

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Offline Blackfin5

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Re: Blackfin CB750 F1 BLASTER
« Reply #27 on: February 24, 2014, 12:07:13 PM »
A bit more.  SS brake lines were delivered from Slingshot.



« Last Edit: February 27, 2014, 06:55:30 PM by Blackfin5 »
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Offline Blackfin5

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Re: Blackfin CB750 F1 BLASTER
« Reply #28 on: March 09, 2014, 03:31:37 PM »
Installed the new Ikon shocks. 



Axled up the wheels so I can have a roller and get the bike off the stand.  Those are the 550's wheels though because I'm still waiting for the Sun rims to get laced up.



Then I finished the rebuild of both master cylinders and front and rear calipers.  Godffrey (Jeff) has the rotors which are being drilled and lightened.  The only issue I have is that I have 2 small o-rings left over for the front caliper.  They are not the o-rings which are for the caliper holder pin - those are accounted for.  I think they may be joint seals or dampener o-rings, however, when checking the parts micro fiche and the Clymer manual, there are no joint seals or o-rings depicted on the front caliper exploded view.  Does anyone know where these go?  When I stripped the front caliper for powder coating I was very careful to put all parts in a baggy. 

The polished holders and powder coated calipers came out like new.  I am eliminating the caliper pipe.  I have new SS lines from Slingshot so there is a line going from the splitter directly into the caliper.

« Last Edit: March 11, 2014, 08:01:21 AM by Blackfin5 »
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Offline Blackfin5

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Re: Blackfin CB750 F1 BLASTER
« Reply #29 on: March 12, 2014, 09:09:12 PM »
Have a roller . . . with pipes.





Anyone recognize this original banner?

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Offline brandEn

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Re: Blackfin CB750 F1 BLASTER
« Reply #30 on: March 12, 2014, 09:37:01 PM »
Bike looks great!
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Offline Blackfin5

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Re: Blackfin CB750 F1 BLASTER
« Reply #31 on: March 13, 2014, 12:12:03 PM »
Thanks, BrandEn.

A preview.... still an accent color, wings and clear coat to be added.



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Offline SOHC4 Cafe Racer Fan

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Re: Blackfin CB750 F1 BLASTER
« Reply #32 on: March 13, 2014, 12:20:55 PM »
That's a great shade of Wes Cooley Suzuki blue.  I like the silver pinstrip dividing the colors.
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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 Blackfin5

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Re: Blackfin CB750 F1 BLASTER
« Reply #33 on: March 13, 2014, 12:32:59 PM »
In person it's actually somewhat a lighter blue - but it is reminiscent of Suzuki.  Another color has been added.  The gas cap cover is silver too.
« Last Edit: March 13, 2014, 02:05:48 PM by Blackfin5 »
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Offline Cevan

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Re: Blackfin CB750 F1 BLASTER
« Reply #34 on: March 13, 2014, 01:03:07 PM »
I've got an F1 I'm slowing working on.  Your build is inspiring me to keep it going.  Looks great.
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Offline Blackfin5

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Re: Blackfin CB750 F1 BLASTER
« Reply #35 on: March 14, 2014, 03:10:27 PM »
Thank you, Cevan.  Stay on your build.
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Offline Blackfin5

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Re: Blackfin CB750 F1 BLASTER
« Reply #36 on: March 28, 2014, 12:17:25 PM »
Just returned from Cape Town SAF to find paint finished.  Here's a mock up.  Side covers not shown-simple gloss black. Seat pad is being upholstered in grey leather.  Waiting for the black Sun rims to be laced.  Then about finished for this first phase!





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Offline calj737

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Re: Blackfin CB750 F1 BLASTER
« Reply #37 on: March 28, 2014, 12:39:11 PM »
Who needs Viagra with that thing in the garage? Freakin' gorgeous!
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'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 tweakin

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Re: Blackfin CB750 F1 BLASTER
« Reply #38 on: March 28, 2014, 03:37:08 PM »
Looks great!  Coming along nicely.
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Offline SOHC4 Cafe Racer Fan

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Re: Blackfin CB750 F1 BLASTER
« Reply #39 on: March 28, 2014, 04:07:23 PM »
Gorgeous.
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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 Blackfin5

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Re: Blackfin CB750 F1 BLASTER
« Reply #40 on: March 28, 2014, 05:56:11 PM »
Thanks, guys.  Especially Tweakin who kind of inspired me to get a 750 - the only 750 among a bunch of 550s.  I hope she handles as well.as she looks.
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Offline dagersh

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Re: Blackfin CB750 F1 BLASTER
« Reply #41 on: March 28, 2014, 08:05:49 PM »
WOW!!!!!!!
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1966 CA77 Dream
1967 Superhawk
1970 CB750K0
1972 CL350
1972 CB450/500 Custom
1972 CB500K1
1975 CB550F
1976 CB400F
1975 CB750 Future Restoration
1976 CB750K6
1976 CB750F
1976 GL1000


1968 Suzuki T500 Cobra
1990 BMW K1
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Offline Blackfin5

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Re: Blackfin CB750 F1 BLASTER
« Reply #42 on: March 30, 2014, 08:01:04 PM »
Need to mock up a hanger for the exhaust to the shock mount.

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Offline Blackfin5

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Re: Blackfin CB750 F1 BLASTER
« Reply #43 on: March 30, 2014, 08:09:13 PM »
Rear master cylinder rebuild.  Need help.  I found a Honda OEM rebuild kit for the rear.



When I disassembled the rear master cyclinder, this was the order of the parts that were removed within the MC bore (I omitted the cir-clip).  The cylinder bore would be to the right.  There was no little rubber cup which came with the rebuild kit (see last pic).



The rebuild kit came with a small rubber end cap.  It's the last item on the right in the pic below.  That piece was not in the master cylinder - I am certain. I did not leave it behind in the bore.  The bore is clean.  I have no idea where this rubber cap is supposed to go, but my guess is that it goes on one end of the spring.  I looked in the manuals and a couple different parts fiche.  The literature shows some type of end fitting on the outer end of the spring (the smaller diameter end), but I can't tell if its the little "dome" piece or the rubber cap.  The PO probably omitted the little rubber cap in a prior rebuild.  Anyone know the proper order of assembly?

« Last Edit: March 30, 2014, 09:04:52 PM by Blackfin5 »
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Offline calj737

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Re: Blackfin CB750 F1 BLASTER
« Reply #44 on: March 31, 2014, 04:57:44 AM »
its a shame that muffler hangar didn't align with the passenger peg. Wouldn't have been too convenient for that cosmic event I guess.

Beautiful bike and project!
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'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 Blackfin5

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Re: Blackfin CB750 F1 BLASTER
« Reply #45 on: March 31, 2014, 07:09:00 AM »
That was my exact thought!
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Offline SOHC4 Cafe Racer Fan

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Re: Blackfin CB750 F1 BLASTER
« Reply #46 on: March 31, 2014, 08:31:55 AM »
Quote from: Blackfin5 on March 30, 2014, 08:01:04 PM
Need to mock up a hanger for the exhaust to the shock mount.



I don't think you want to hang your exhaust on the shock mount, especially if you are thinking of the lower mount.  The lower mount will move up and down with the swingarm bending the hell out of your pipe.  Hanging it to the top mount will look pretty fugly, too.  I would suggest a lateral mount from the hanger on the exhaust pipe back to the passenger peg.  If you do it in black, it will be less noticeable.
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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 calj737

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Re: Blackfin CB750 F1 BLASTER
« Reply #47 on: March 31, 2014, 03:06:59 PM »
I used a tensioned spring to mount mine laterally to the rearset bracket (bung on rear of pipe not shown). Makes removal quite simple.
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"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: Blackfin CB750 F1 BLASTER
« Reply #48 on: March 31, 2014, 04:10:41 PM »
I don't think either the K or F has a mount anywhere near the hanger welded onto the can. 
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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 Blackfin5

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Re: Blackfin CB750 F1 BLASTER
« Reply #49 on: March 31, 2014, 09:17:03 PM »
This one is a head scratcher.  I was only considering the top shock mount for the hanger.  The mounting tab on the can is offset outboard from the shock mount.  A hanger would be butt ugly indeed.  A lateral mount from the passenger peg may not provide sufficient support unless its a 2 sided angle mount.  I am thinking a ring around the pipe just in front of the can may work with the passenger peg, but then the mounting tab on the can looks out of place.  I may have to get Mr. North's input on this one.
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