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Author Topic: 1980 CB750C * Phase 1 Complete *  (Read 10831 times)

Offline madd750

  • Posts: 89
1980 CB750C * Phase 1 Complete *
« on: Dec 30, 2012, 08:30:05 »
I'm starting my build thread in the special section because i'm not 100% sure where it is going to go. As of now i'm bobbing off unnecessary parts/metal and then i will have a better idea, i'm thinking tracker style. My build platform isn't quite as popular as most, but with some elbow grease and creativity it should be a looker. The main concern to me is that it runs strong and rides straight when i'm finished. (it started out that way as far as i could tell from my 5 min test drive after purchasing it ;D)

The platform: 1980 Honda C750c, bought running and basically road safe for $700

The donor: 1979 CB750k, bought with title but not running with engine in sections for $300
« Last Edit: May 30, 2013, 16:55:11 by madd750 »

Offline madd750

  • Posts: 89
Re: *Undefined Roller* 1980 CB750C build
« Reply #1 on: Dec 30, 2012, 08:47:33 »
Day one:

Fired up the wood stove in the garage and put a little time in on the build, it was snowing like a bastard outside so i figured what better way to weather the storm.

Pulled off the following:

rear fender
seat
chrome bar around seat
signal lights
stock headlight brackets
mirrors
crash bar/highway pegs
windshield

I also fixed/replaced a leaking  main fuel line that was cracked, good chance it was the original. So far I am impressed at how clean this 32 year old bike is. Here are my progress pics

*sorry my pics uploaded  kinda small from my phone, i will post larger ones from now on*


Offline notlob

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    • CB750 Brat Bobber Build Thread
Re: *Undefined Roller* 1980 CB750C build
« Reply #2 on: Dec 30, 2012, 09:25:39 »
Hey, go for it.
“Every time I start thinking the world is all bad, then I start seeing people out there having a good time on motorcycles. It makes me take another look.” >> Steve McQueen

Look at it! God, your project is ... it's everywhere. Your garage looks like you've been committing war crimes against a robot.


Build Threads
1980 Cb750: http://www.dotheton.com/forum/index.php?topic=43860.0
1982 CB900: http://www.dotheton.com/forum/index.php?topic=46733.0

Offline BigKev

  • Posts: 113
Re: *Undefined Roller* 1980 CB750C build
« Reply #3 on: Jan 03, 2013, 08:06:22 »
Ok I'm in, lets do this.
Well shit...

Offline Hoosier Daddy

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Re: *Undefined Roller* 1980 CB750C build
« Reply #4 on: Jan 03, 2013, 13:48:38 »
Heh, heh,
The DOHC CB750's are going to take over the world!
Heh, heh
 
C models are welcome here.  ;D
“Before you diagnose yourself with depression or low self esteem, why don’t you just make sure that you’re just not in fact surrounded by a bunch of assholes, alright?”


JAILBAIT '67 BSA 441 Victor Roadster
STAY CLEAN '67 BSA Spitfire
ROCK-IT '81 CB750C
BOMBER '81 GL1100
OVERKILL '80 GS750
NO CLASS '72 CB450 K5

Offline madd750

  • Posts: 89
Re: *Undefined Roller* 1980 CB750C build
« Reply #5 on: Jan 04, 2013, 13:30:27 »
I spend a little time on the bike yesterday, i would have spent more time but my Jeep needed some tlc first.

I removed the speedo and tach from their mounting bracket along with the large cluster of indicator lights. My plan is to keep the tach and speedo but rework or make a new bracket to bring them closer together and tucked closer to the triples. I'm not going to be reusing the original indicator lights because they are too big and bulky, but i did take the indicator light cluster of my '79k parts bike which is must smaller and nicer so if it decide to have indicator light i will most likely use these ones.

I also unbolted the choke cable and ignition, which i hope to be able to move to the middle of the bike near the seat/airbox. Then i removed the tank from the bike and replaced it with the tank from my '79k parts bike, i must say i like the profile/shape of the k tank compared to the C tank.

The new tank doesn't fit perfectly, but it's nothing a grinder can't cure, you'll see in the pics that i need to shave a little off where the tank bolts to the frame so it sits a little more flush and i need to trim off the tabs where the side cover attach the tank on a '79k bike.


The last thing i did for the day was take the seat off the '79k parts bike and tear it down to its pan and set it on the bike to see if i can cut it up and make it into a new seat pan, i think the possibility is there but it will work better if i cut/shave original seat from the bike so i can keep the option of the stock mounting brackets just behind the rear shocks.


Offline madd750

  • Posts: 89
Re: *Undefined Roller* 1980 CB750C build
« Reply #6 on: Jan 15, 2013, 18:08:49 »
More progress today:

I cut the excess tabs off of the tank and bobbed the frame off behind the rear shock mounts



i also re-worked the stock seat pan which i think it turned out pretty good for now. It isn't perfectly smooth, but i think padding and leather with cover it up. What i did was basically use the tools i had in the garage to cut/bend and shape it the way i needed. I trimmed the excess material off with a cut-off wheel, the used my vice/mini anvil to bend and beat it into better shape. Then finally i mock mounted the seat on the bike and used c-clamps, heat gun and dead blow hammer to make the fitment even better. You might notice a gap between the frame and pan in the rear but once it's bolted into place and finished i'm hoping it will be minimal. I did a few other small things, but i forget what they were  :o
 







Offline notlob

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    • CB750 Brat Bobber Build Thread
Re: *Undefined Roller* 1980 CB750C build
« Reply #7 on: Jan 15, 2013, 19:00:07 »
yea the KZ / KA tanks are shorter than the others and have different rear mounts. I had the same problem with mine.
“Every time I start thinking the world is all bad, then I start seeing people out there having a good time on motorcycles. It makes me take another look.” >> Steve McQueen

Look at it! God, your project is ... it's everywhere. Your garage looks like you've been committing war crimes against a robot.


Build Threads
1980 Cb750: http://www.dotheton.com/forum/index.php?topic=43860.0
1982 CB900: http://www.dotheton.com/forum/index.php?topic=46733.0

Offline madd750

  • Posts: 89
Re: *Undefined Roller* 1980 CB750C build
« Reply #8 on: Jan 16, 2013, 18:16:15 »
Progress for today:

I fabbed up a new mount for my tach and speedo which i made it out of 16g steel. I brought the gauges in closer to the triple and also closer together. Its not a final product, just a rough draft.




Offline madd750

  • Posts: 89
Re: *Undefined Roller* 1980 CB750C build
« Reply #9 on: Jan 23, 2013, 11:37:07 »
Received a few goodies from DCC today. i've made some pretty good progress in the last week. I will try and venture out to the shop today and put my headlight brackets on and take progress pics, but it's a balmy -20 C outside so walking 50 feet to a cold garage isn't that appealing  ;D