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Author Topic: 1975 CB750F  (Read 2733 times)

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Offline GritCity750

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1975 CB750F
« on: August 18, 2015, 06:01:59 PM »
I was encouraged to post some of my build pics here...and so here they are!
Being a complete newbie, I bought a 1975 CB750F basket case, stuck in gear, not charging, swiss cheese tank, non original parts, previously laid down bike. Now that I have gotten that off my chest. Here are a few of the mods:

F2 replacement tank
Ricks reg/rectifier
Handmade headlight bucket, seat and battery box
Replacement wiring harness
Integrated headlight
LED, carbon fiber handmade taillight complete with PITA formed lens
Sun rims with heavy-duty spokes (i do weigh 270lbs!) 18x3.15 front 18x3.75 rear
2008 Hyabusa shifter, master cylinder and brake lever
Fabricated rear set mounts
Cognito Moto top clamp
Tarrozi clipons
Handmade aluminum headlight bucket mount
Seat upholstery by Bobs Upholstery (Portland OR)
Relocated ignition switch to below tank
Exhaust is Carpy’s Dunstall 2 into 1
LED warning lights in headlight bucket, although I can barely see them
Orange paint is House of Color Tangerine Orange with serious metal flake
Frame is PPG Delfleet black

The rest is mostly tears, swear words, empty wallet and time. The fumes from the carbon fiber/fiberglass resin may have also shortened my life considerably as well.
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Offline goldarrow

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Re: 1975 CB750F
« Reply #1 on: August 18, 2015, 06:13:14 PM »
Very nice!
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Life Is Full Of Challenges - And My Backyard Is Full Of SOHC4's

CB550 K0
CB750 K0, K2, K23 JDM, K45, K5
And the little ones z50r, xr50r, st90


750k5 http://forums.sohc4.net/index.php?topic=114817.0

Offline GritCity750

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Re: 1975 CB750F
« Reply #2 on: August 18, 2015, 06:13:54 PM »
And so it begins. Since I did a lousy job of taking in-progress pics, I'll mostly post stuff I fabricated or that seems unique to the bike.
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Offline SKTP

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Re: 1975 CB750F
« Reply #3 on: August 18, 2015, 06:16:07 PM »
More pics of the complete bike please(3/4 views, front, back, the other side). Looks awesome
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1978k rebuild thread http://forums.sohc4.net/index.php?topic=68423.0
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Offline GritCity750

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Re: 1975 CB750F
« Reply #4 on: August 18, 2015, 06:17:41 PM »
headlight bucket and seat...
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Offline GritCity750

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Re: 1975 CB750F
« Reply #5 on: August 18, 2015, 06:18:14 PM »
Quote from: SKTP on August 18, 2015, 06:16:07 PM
More pics of the complete bike please(3/4 views, front, back, the other side). Looks awesome

You got it! on the way.
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Offline SOHC4 Cafe Racer Fan

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Re: 1975 CB750F
« Reply #6 on: August 18, 2015, 06:27:01 PM »
Very nice bike.  It looks like it is partially inspired by Doctor D's (Dave Hiller) CB750 Super Sport -- a Twinline build.

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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 GritCity750

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Re: 1975 CB750F
« Reply #7 on: August 18, 2015, 06:27:54 PM »
Struggling to post pics!
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Offline GritCity750

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Re: 1975 CB750F
« Reply #8 on: August 18, 2015, 06:34:22 PM »
Quote from: CB750 Cafe Racer Fan on August 18, 2015, 06:27:01 PM
Very nice bike.  It looks like it is partially inspired by Doctor D's (Dave Hiller) CB750 Super Sport -- a Twinline build.

Very much so. I have seen Doctor D's bike in person and it blows mine away in every respect. Those guys at Twinline are a notch above, no doubt about that.
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Offline GritCity750

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Re: 1975 CB750F
« Reply #9 on: August 18, 2015, 06:39:43 PM »
Another pic
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Offline GritCity750

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Re: 1975 CB750F
« Reply #10 on: August 18, 2015, 06:52:13 PM »
Custom taillight and lens
« Last Edit: August 18, 2015, 06:55:54 PM by GritCity750 »
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Offline GritCity750

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Re: 1975 CB750F
« Reply #11 on: August 18, 2015, 07:02:41 PM »
....aaaaaaaaand what project post would be complete without some pod action!? believe it or not, these little homemade  air-boot-velocity stack thingy's I made work really well. No power fluctuations at speed (no matter where I move my knee), way easier starting (still scratching my head on that one) and a lot of oooopfh off idle, even with my fat ass on it. I plan on fabbing up some aluminum ones before these dissolve into the intake!
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Offline Retro Rocket

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Re: 1975 CB750F
« Reply #12 on: August 18, 2015, 07:21:24 PM »
They help take turbulence out of the inflow to the carbs, I would be making them to equal the throat size of the carb though, rather than having them slide in as they appear in your pics... ;)
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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: 1975 CB750F
« Reply #13 on: August 18, 2015, 09:26:09 PM »
Great idea with the interior stacks!

Yes, Dave's bike is pretty amazing.  I met Dave and Tower a few years back and got to throw a leg over The Thorn.  Ian Halcott (who owned the shop and helped build Dave's bike, the Thorn and others) and I are pretty good friends, too.  He fabbed me a seat for my 750 similar to Dave's.



I REALLY like your taillight.  With all of those LEDs, it must be a BRIGHT sonofa#$%*!
« Last Edit: August 19, 2015, 05:26:43 PM by CB750 Cafe Racer Fan »
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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 Loctite77

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Re: 1975 CB750F
« Reply #14 on: August 19, 2015, 05:19:27 PM »
I love all three of these bikes. I've seen that black one and Dr. Daves on YouTube. these F builds are my inspiration on my own 750F I am currently working on. I'm just a hack though.  No where near the quality of these. Nice work dudes.


Yeah Son!
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Yeah Son!

Offline SOHC4 Cafe Racer Fan

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Re: 1975 CB750F
« Reply #15 on: August 19, 2015, 05:31:09 PM »
FYI - my black 750 is a K model (1977) with a 1976 GL1000 front and a 1976 F gas tank.


Knowing what you want and don't want is important too. You can always enlist help from members and professional trades.
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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 Loctite77

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Re: 1975 CB750F
« Reply #16 on: August 19, 2015, 05:52:18 PM »
Quote from: CB750 Cafe Racer Fan on August 19, 2015, 05:31:09 PM
FYI - my black 750 is a K model (1977) with a 1976 GL1000 front and a 1976 F gas tank.


Knowing what you want and don't want is important too. You can always enlist help from members and professional trades.

I should have noticed the drum brake..... I. So drawn to the shape of the F tank. Definitely my favorite. I WANT a lt of things. My problem is two fold. Money.... And I'm too damn impatient I want it all done yesterday. At least I have the satisfaction of doing it all myself. So far have only farmed out the leather upholstery, Ian Holcott did that for me. I need to get a build thread going soon. 
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Yeah Son!

Offline 1978CB750SS

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Re: 1975 CB750F
« Reply #17 on: March 19, 2017, 06:57:44 AM »
Do you still have that original seat? If so, how much if you want to sell it? BTW, you do excellent work!
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Offline GritCity750

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Re: 1975 CB750F
« Reply #18 on: March 19, 2017, 11:24:10 PM »
Quote from: 1978CB750SS on March 19, 2017, 06:57:44 AM
Do you still have that original seat? If so, how much if you want to sell it? BTW, you do excellent work!
Thanks for the kind word. Unfortunately, I gave the  original seat away some time ago.
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