Author Topic: Vintage Speed Part Mashup - 1976 CB750F  (Read 67153 times)

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Online scottly

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Re: Vintage Speed Part Mashup - 1976 CB750F
« Reply #100 on: January 09, 2015, 03:59:55 PM »
Hey Willi, I have one of those shocks on a Kawi 550 junker. The body of the shock is wasted at the top end, but the adjuster looks ok. It looks slightly different than yours.
Don't fix it if it ain't broke!
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Offline slikwilli420

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Re: Vintage Speed Part Mashup - 1976 CB750F
« Reply #101 on: January 09, 2015, 04:07:00 PM »
Scottly, it looks pretty close. I think it might be the angle. Something you can prty with for a shock in need? 
All you gotta do is do what you gotta do.

Vintage Speed Parts Mashup: http://forums.sohc4.net/index.php?topic=133638.0
Rickman CR Parts Kit Refresh: http://forums.sohc4.net/index.php/topic,154837.0.html
AHRMA CB750 Racer: http://forums.sohc4.net/index.php/topic,158461.0.html
AHRMA Superbike Heavyweight Racer: http://forums.sohc4.net/index.php/topic,173120.0.html
'76F CB750 Patina Redemption: http://forums.sohc4.net/index.php/topic,174871.0.html

Online scottly

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Re: Vintage Speed Part Mashup - 1976 CB750F
« Reply #102 on: January 09, 2015, 04:12:20 PM »
Yous appears to be thicker above the notches: it looks like a diagonal line, where mine if flat. Yeah, I can part with it. ;)
Don't fix it if it ain't broke!
Helmets save brains. Always wear one and ride like everyone is trying to kill you....

Online scottly

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Re: Vintage Speed Part Mashup - 1976 CB750F
« Reply #103 on: January 09, 2015, 04:17:11 PM »
Here's a shot from a different angle. You can see the damage at the top of the body; I'll probably have to take a hacksaw to it to get the adjuster off.
Don't fix it if it ain't broke!
Helmets save brains. Always wear one and ride like everyone is trying to kill you....

Offline slikwilli420

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Re: Vintage Speed Part Mashup - 1976 CB750F
« Reply #104 on: January 09, 2015, 04:21:41 PM »
Good eyes on the difference. Damn that thing is roached. I'll keep this one on the back burner to see if another one pops up or I can get mine repaired as Tintop suggested.
All you gotta do is do what you gotta do.

Vintage Speed Parts Mashup: http://forums.sohc4.net/index.php?topic=133638.0
Rickman CR Parts Kit Refresh: http://forums.sohc4.net/index.php/topic,154837.0.html
AHRMA CB750 Racer: http://forums.sohc4.net/index.php/topic,158461.0.html
AHRMA Superbike Heavyweight Racer: http://forums.sohc4.net/index.php/topic,173120.0.html
'76F CB750 Patina Redemption: http://forums.sohc4.net/index.php/topic,174871.0.html

Online scottly

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Re: Vintage Speed Part Mashup - 1976 CB750F
« Reply #105 on: January 09, 2015, 04:54:29 PM »
You can have it, including shipping, for a $10 donation to the forum, and I'll include the upper "C" spring retainer. ;D
Don't fix it if it ain't broke!
Helmets save brains. Always wear one and ride like everyone is trying to kill you....

Offline slikwilli420

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Re: Vintage Speed Part Mashup - 1976 CB750F
« Reply #106 on: January 09, 2015, 04:56:09 PM »
I'll take you up on that just for the sake of spare parts. Thanks! !
All you gotta do is do what you gotta do.

Vintage Speed Parts Mashup: http://forums.sohc4.net/index.php?topic=133638.0
Rickman CR Parts Kit Refresh: http://forums.sohc4.net/index.php/topic,154837.0.html
AHRMA CB750 Racer: http://forums.sohc4.net/index.php/topic,158461.0.html
AHRMA Superbike Heavyweight Racer: http://forums.sohc4.net/index.php/topic,173120.0.html
'76F CB750 Patina Redemption: http://forums.sohc4.net/index.php/topic,174871.0.html

Offline Godffery

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Re: Vintage Speed Part Mashup - 1976 CB750F
« Reply #107 on: January 28, 2015, 07:18:06 PM »
I'm interested in the damping rod if it's not badly pitted.

Online scottly

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Re: Vintage Speed Part Mashup - 1976 CB750F
« Reply #108 on: January 28, 2015, 08:02:33 PM »
I'm interested in the damping rod if it's not badly pitted.
The rod appears to be in decent condition, but I haven't inspected it closely or checked for bending. I have no clue how the damage to the body happened... :o
Don't fix it if it ain't broke!
Helmets save brains. Always wear one and ride like everyone is trying to kill you....

Offline Godffery

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Re: Vintage Speed Part Mashup - 1976 CB750F
« Reply #109 on: January 30, 2015, 11:17:11 AM »
Hard to say, but my bet would be on "User Error".
LMK when you get a chance to give it a good look over and how much you want for it shipper to the address below:

Thank you,  Godffery

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Offline slikwilli420

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Re: Vintage Speed Part Mashup - 1976 CB750F
« Reply #110 on: February 01, 2015, 03:24:31 PM »
Finally had some time to come up with a unique way to mount the gauges. Still needs a bit more work but this is the basic idea.

Also got to work mounting the tail light seanbarney41 was gracious enough to donate to the project. I wanted a recessed look so it didn't stick out quite so far. The edges of the cutout in the tail will get some neoprene rubber trim to make it look more finished and frame in the light nicely.

Also, thanks to Jim F for the great laser welding work he did on the shock adjusting collars for my Marzocchi shocks. His work will give them a new lease on life.
All you gotta do is do what you gotta do.

Vintage Speed Parts Mashup: http://forums.sohc4.net/index.php?topic=133638.0
Rickman CR Parts Kit Refresh: http://forums.sohc4.net/index.php/topic,154837.0.html
AHRMA CB750 Racer: http://forums.sohc4.net/index.php/topic,158461.0.html
AHRMA Superbike Heavyweight Racer: http://forums.sohc4.net/index.php/topic,173120.0.html
'76F CB750 Patina Redemption: http://forums.sohc4.net/index.php/topic,174871.0.html

Offline Godffery

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Re: Vintage Speed Part Mashup - 1976 CB750F
« Reply #111 on: February 11, 2015, 08:54:28 AM »

 slikwilli420; WOW, Nice job with the Gauge mount!

scottly; Got the Damping rod, Tanks!  I'll LYK when I have the Phenolic piston blanks.

Offline slikwilli420

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Re: Vintage Speed Part Mashup - 1976 CB750F
« Reply #112 on: February 11, 2015, 09:04:52 AM »
Thanks Godffrey! I wanted to do something simple but different from other versions. I think it also lends itself to the vintage feel I am shooting for.
All you gotta do is do what you gotta do.

Vintage Speed Parts Mashup: http://forums.sohc4.net/index.php?topic=133638.0
Rickman CR Parts Kit Refresh: http://forums.sohc4.net/index.php/topic,154837.0.html
AHRMA CB750 Racer: http://forums.sohc4.net/index.php/topic,158461.0.html
AHRMA Superbike Heavyweight Racer: http://forums.sohc4.net/index.php/topic,173120.0.html
'76F CB750 Patina Redemption: http://forums.sohc4.net/index.php/topic,174871.0.html

Offline Godffery

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Re: Vintage Speed Part Mashup - 1976 CB750F
« Reply #113 on: February 11, 2015, 10:57:58 AM »

  I'd say you nailed it.

Offline slikwilli420

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Re: Vintage Speed Part Mashup - 1976 CB750F
« Reply #114 on: June 12, 2015, 08:15:09 AM »
Well, I have been on hiatus for the last few months, due to my newest project, our first child. Anyone with kids will remember their first and knows that it takes a ton of work the first few months but is well worth every second.

Now that I am sleeping through decent chunks of the night and my life has settled some, I am back at it.

I received the tastiest of packages from our friend and JMR Porting, which includes a stage IV head that shines like a jewel, as well as a Wiseco 836 kit and some Cycle X rods. It was a big cash layout but I know it will be well worth it in the end. The upsides is that the largest single outlays of cash should be behind me as I work from the top down on this engine build.

As I get going on the build again, I have turned focus to a few nagging items. First is getting all the aluminum parts that I have made ready for hardcoat anodizing. I am sold on hardcoat simply because it is not a decorative finish like regular anodizing, and since most parts would be black anyway, it seems like a no brainer to go with hardcoat, enhanced with black dye. Parts that will be black hardcoat include the rear caliper mount, rear master cylinder mount, all front brake mounting brackets, the Weber intake, rearset brackets, and engine mounts both front and rear.

I had to pull the engine to do a leaky head gasket which is now done, so its time to finish up the frame by getting all the gusseting/bracing finished up and mounting the AP Racing rear master. Once I get some paint on to cover the exposed areas, I can continue my mock up build. My plan is to get this thing vetted over the next year before I go to final paint/powder. I hear of too many guys who build their dream bike in one go then remember that one bracket that costs them days of downtime and new powder on the frame.

For the front end, which is shaping up to be my favorite part of the bike, the only thing left is axle spacers. Those too will be black hardcoat anodized. Beyond that I will need to figure out what to do with brake lines. I can either do two full-length lines from the master to each caliper, or do one short one to a splitter and a line to each caliper from there. Finding a place to mount the splitter that doesn't clutter things up is my main concern. Probably going with two full-length lines.

On the rear, I have powder on the Marzocchi shocks, and the rebuilds are ready to go in with fresh oil. All that is holding that up is getting a few pieces refinished, like the adjuster collars and top spring retaining collars. This damn hardcoat anodizing is causing quite the bottleneck in my project!

Other things to button up are getting some upholstery on my seatpan and getting the tank cover, seat in at least the same color of primer so I don't look like a complete idiot.

Though the list is long I am shooting to get a rideable bike before the sun sets on summer here in Michigan.

More to come (pics too!) as I get moving on this again.
All you gotta do is do what you gotta do.

Vintage Speed Parts Mashup: http://forums.sohc4.net/index.php?topic=133638.0
Rickman CR Parts Kit Refresh: http://forums.sohc4.net/index.php/topic,154837.0.html
AHRMA CB750 Racer: http://forums.sohc4.net/index.php/topic,158461.0.html
AHRMA Superbike Heavyweight Racer: http://forums.sohc4.net/index.php/topic,173120.0.html
'76F CB750 Patina Redemption: http://forums.sohc4.net/index.php/topic,174871.0.html

Offline 754

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Re: Vintage Speed Part Mashup - 1976 CB750F
« Reply #115 on: June 12, 2015, 09:10:11 AM »
Hard anodizing, I had done tends to look a bit frosty or textured..may not always be the case.
...but..if so..I would lean toward soft anodize for wheel spacers that turn inside a seal.
 Brake lines..I think the dual lines, or the stock splitter, look low end on a custom bike.. And the worst one.. Is single line to first caliper, then a U shaped line going over to second caliper.

Spend a few bucks and use a tee and forged fittings, or build a junction block out of aluminum and drill/tap to use NPT- AN3 fittings. And I think AN fittings to hose look way better than banjo fittings.
I ran my line thru the triple tree, then Had a tee below it, and forged 45 degree fittings, from the tee to the calipers.
 Will try to make a diagram.
« Last Edit: June 12, 2015, 10:47:13 AM by 754 »
Maker of the WELDLESS 750 Frame Kit
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Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline Godffery

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Re: Vintage Speed Part Mashup - 1976 CB750F
« Reply #116 on: June 12, 2015, 10:03:24 PM »
 Good to see the project is back on the move!
Some get to the "Kids Stage" and never get back to there old buddy, Mr' Motorcycle.   = ]

Offline slikwilli420

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Re: Vintage Speed Part Mashup - 1976 CB750F
« Reply #117 on: June 18, 2015, 11:39:14 AM »
Yes, its definitely good to be back!

Frank, after looking at your drawing I was at a bike show this weekend and saw a setup that was quite impressive, as seen in the first two pictures. I am contemplating this approach or one that uses an aftermarket splitter, like the one here:

https://www.denniskirk.com/goodridge/universal-front-brake-tee-pmchd-024bk.p271527.prd/271527.sku

I do like the idea of minimizing banjo bolts. Goodridge also sells the 3/8-24 to -3AN adapter that will be necessary for both the front and rear master cylinders and calipers. The tee up front may end up with banjo fittings but that remains to be seen.

I finally got the rear master mounted on its bracket and the tab welded to the frame. I have a parts order in at Fast From the Past for some linkage parts to complete the assembly.

I will also be picking up the front wheel spacers from the machine shop today, which should complete fabrication on the front end. I will also be dropping off the stainless rod for the engine mounting bolts, which will be threaded and fitted with 12pt ARP nuts. One end will be welded like a bolt head to its less of a cumbersome assembly.

The last pic is the rear motor mount. It is a riff on the one Doctor D has on his bike. I am still working on the design and may have another one water jetted before it goes out for machining.
All you gotta do is do what you gotta do.

Vintage Speed Parts Mashup: http://forums.sohc4.net/index.php?topic=133638.0
Rickman CR Parts Kit Refresh: http://forums.sohc4.net/index.php/topic,154837.0.html
AHRMA CB750 Racer: http://forums.sohc4.net/index.php/topic,158461.0.html
AHRMA Superbike Heavyweight Racer: http://forums.sohc4.net/index.php/topic,173120.0.html
'76F CB750 Patina Redemption: http://forums.sohc4.net/index.php/topic,174871.0.html

Offline SOHC4 Cafe Racer Fan

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Re: Vintage Speed Part Mashup - 1976 CB750F
« Reply #118 on: June 18, 2015, 11:55:31 AM »
Joker Machine's triple trees have a similar set up with the brake line fittings.  There's a pdf of the tree dimensions.

Every once in a while, you poke this thread up again and I realize how much l like it again!
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 Medyo Bastos

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Vintage Speed Part Mashup - 1976 CB750F
« Reply #119 on: June 18, 2015, 12:18:35 PM »
i used the lower tree as the brake - t as well on my digger build



...Save a tree, eat a beaver...
« Last Edit: June 18, 2015, 12:22:06 PM by Medyo Bastos »

Offline 754

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Re: Vintage Speed Part Mashup - 1976 CB750F
« Reply #120 on: June 18, 2015, 08:29:57 PM »
Have fun with the motormount, they are quite a bit of work...I made the one for Doctor D..

The Tee in the tree is nice and clean,  but going thru the stem is even cleaner.
You can still do it with the tree.. Driil small hole thus stem, and machine a gloves on the press fit part of the lower stem. Then drill and tap the tree with the holes intersecting to meet the groove..a wet stem......
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

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Re: Vintage Speed Part Mashup - 1976 CB750F
« Reply #121 on: June 18, 2015, 09:47:48 PM »
Yep, Frank is The Man who made those killer mounts for Doctor D and a set for me!

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: Vintage Speed Part Mashup - 1976 CB750F
« Reply #122 on: June 19, 2015, 04:41:17 AM »
The Joker Machine system that Don mentioned, has a manifold milled into the underside of the lower clamp, an AN-type fitting above and below, and allows dual lines to be fed or crossed over within the manifold (block plug for opposite side). I use it on my 550 and am pretty happy with it.

A modification I would make to it is to kill into the top clamp the same AN fitting thru the top so you could run a short hard line from MC to top clamp, then straight line to bottom, then dual, single or switched line(s) from the lower clamp. This would eliminate a great deal of clutter, friction on the brake cables from travel, routing, and what not.
'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 Medyo Bastos

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Re: Vintage Speed Part Mashup - 1976 CB750F
« Reply #123 on: June 19, 2015, 06:14:28 AM »
that is how mine is. single short cable on top of lower tree to m/c, and 2 short cables underneath straight shot to both calipers


...Save a tree, eat a beaver...

Offline slikwilli420

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Re: Vintage Speed Part Mashup - 1976 CB750F
« Reply #124 on: June 19, 2015, 06:52:45 AM »
Cal/Medyo, would something like this work for the top like Cal suggested?

http://www.jegs.com/i/JEGS+Performance+Products/555/63042/10002/-1

I don't know a lot about fitting for hard lines. What type of fitting does this need to thread into? My master cylinder up front is a vintage AP Lockheed that has a 3/8-24 threaded hole. Since these aren't NPT threads I would think that a copper washer was needed. I still really like the idea of the integrated brake tee on the bottom triple tree. I will see what I can do to have as clean a look as possible.

My initial thought is to use -3AN to 3/8-24 fittings mated to soft lines to eliminate all the banjo fittings/bolts.

My other question is about adapting brake light switches to the front and the back. I don't care for the brake switch banjo bolts since they look unfinished.
All you gotta do is do what you gotta do.

Vintage Speed Parts Mashup: http://forums.sohc4.net/index.php?topic=133638.0
Rickman CR Parts Kit Refresh: http://forums.sohc4.net/index.php/topic,154837.0.html
AHRMA CB750 Racer: http://forums.sohc4.net/index.php/topic,158461.0.html
AHRMA Superbike Heavyweight Racer: http://forums.sohc4.net/index.php/topic,173120.0.html
'76F CB750 Patina Redemption: http://forums.sohc4.net/index.php/topic,174871.0.html