Author Topic: XXXs 750/3 trash can  (Read 4327 times)

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Offline BomberMann650

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XXXs 750/3 trash can
« on: November 14, 2017, 02:34:00 PM »
From Trash to Treasure.
1976 Yamaha XS 750 triple. 
Codename; Trash Can 
aka; Oscar the Grouch.

Before and After.
« Last Edit: February 06, 2018, 04:23:03 PM by BomberMann650 »

Offline blue_roller

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Re: XXXs 750/3 trash can
« Reply #1 on: November 14, 2017, 03:01:28 PM »
Wow! What a difference. I think the green/polished scheme is very cool.
'75 cb750F SS

My Build Thread-

Offline BomberMann650

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Re: XXXs 750/3 trash can
« Reply #2 on: November 14, 2017, 07:25:23 PM »
Thanks blue_roller!

I'll upload the rest of the build journal as soon as possible.

Offline RAFster122s

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Re: XXXs 750/3 trash can
« Reply #3 on: November 14, 2017, 10:30:30 PM »
Nice
David- back in the desert SW!

Offline Stev-o

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Re: XXXs 750/3 trash can
« Reply #4 on: November 15, 2017, 06:57:08 AM »
Nice job
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline CycleRanger

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Re: XXXs 750/3 trash can
« Reply #5 on: November 15, 2017, 08:24:49 AM »
Kudos to you for making something out of nothing!
I wouldn't have considered that crusty pile in the "before" picture even worth the effort to part out.
Do you have a copy of the Honda Shop Manual or Parts List for your bike? Get one here:
https://www.honda4fun.com/materiale/documentazione-tecnica
CB750K5        '79 XL250s     CL350K3
CB750K3        '76 XS650      '76 CJ360T

Offline RAFster122s

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Re: XXXs 750/3 trash can
« Reply #6 on: November 15, 2017, 11:13:49 AM »
Got any pics after all the dirt was washed off?  You did a transformation for certain.  Did you clear the bare polished steel parts?  Nice job on the bike.  It is going to always generate interest wherever you ride her, and thus conversations.

David
David- back in the desert SW!

Offline CBJoe

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Re: XXXs 750/3 trash can
« Reply #7 on: November 15, 2017, 11:13:56 AM »
Awesome!  Looks great...love the exhaust and tail.

I as well have saved one of these junkers....this one is parked for a refresh though as the tank and covers are destined to be a different color and some gaskets need replaced.  The grey tank and covers currently looks horrible with the Grey frame in the sun.

'07 Bonneville Black
'15 Moto Guzzi California 1400
CB750K2 Hot Rod Revival http://forums.sohc4.net/index.php/topic,171693.0.html
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'66 CM91 (C90'ish)

Offline BomberMann650

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Re: XXXs 750/3 trash can
« Reply #8 on: November 15, 2017, 08:38:05 PM »
Kudos to you for making something out of nothing!
I wouldn't have considered that crusty pile in the "before" picture even worth the effort to part out.

If it weren't my dead uncles old bike. 
I'd been wanting to ride the thing since I was ten. 
So it unfolds;
The story of a young cowboy, growing up doing chores next to a neglected old motorcycle. 
Weeks of stacking firewood every summer.  Staring at this machine while bucking hay bales in the barn. 
Sometimes, he thought he could hear it whimper. 
A wounded animal, locked in a stable.  Unable to run free, let alone move on its own.
Our young cowboy grew up.  Learned the ropes from the old farm hands.
Then one cold February morning, our cowboy decided it was time to bring the beast out of its cage.
It took a team of every cowhand the boy knew to break this animal.  To heal the damage caused by neglect. 
The animal put up a fight.  Stubborn and forlorn.  Pitching fits and bucking throughout the process.
But with time, patience, and perseverance;
This cowboy broke the pony. 
« Last Edit: November 15, 2017, 08:49:13 PM by BomberMann650 »

Offline CycleRanger

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Re: XXXs 750/3 trash can
« Reply #9 on: November 15, 2017, 08:46:47 PM »
Kudos to you for making something out of nothing!
I wouldn't have considered that crusty pile in the "before" picture even worth the effort to part out.

If it weren't my dead uncles old bike. 
I'd been wanting to ride the thing since I was ten. 
Oh, well, that's completely different. I totally get it now. :)
Do you have a copy of the Honda Shop Manual or Parts List for your bike? Get one here:
https://www.honda4fun.com/materiale/documentazione-tecnica
CB750K5        '79 XL250s     CL350K3
CB750K3        '76 XS650      '76 CJ360T

Offline BomberMann650

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Re: XXXs 750/3 trash can
« Reply #10 on: November 15, 2017, 08:50:44 PM »
Kudos to you for making something out of nothing!
I wouldn't have considered that crusty pile in the "before" picture even worth the effort to part out.

If it weren't my dead uncles old bike. 
I'd been wanting to ride the thing since I was ten. 
Oh, well, that's completely different. I totally get it now. :)

That's uncle g's veterans burial flag hung next to it.  He passed away several years before I joined the family.
I hope he likes it.

Offline BomberMann650

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Re: XXXs 750/3 trash can
« Reply #11 on: November 20, 2017, 11:08:59 PM »
First step was to remove the vetter fairing, the rotten out saddle bag brackets, and the locked on brakes.  The seat had been taken off some time ago.  But it was a classic.  Two up seat with an adjustable sissy bar.  We’ve all seen em. 

Couldn’t pass on the Goblinko Patch.

Offline BomberMann650

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Re: XXXs 750/3 trash can
« Reply #12 on: November 20, 2017, 11:26:05 PM »
Since everything on this bike was badly corroded.  I scooped up a parts bike.
Someone elses abandoned cafe project.  With a good motor and enough replacement bits to get me through almost everything.  Still have a rolling chassis of parts left over!

Cost - $275 + gas
No Bullsh!t
That’s how you pull off a budgeted build right there.

Ended up hauling both bikes to my buddies garage for the tear down.

Offline BomberMann650

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Re: XXXs 750/3 trash can
« Reply #13 on: November 21, 2017, 12:07:00 AM »
Of all the criticisms around the xs750 line.  The rubber frame holding the iron block was one thing I decided to fix.

With the help of longtime friend and aspiring frame builder.  We harvested the donor bike for tubing and pieced together some frame bracers. 
On a cold mid march day, he welded it all up with a 120v fluxcore mig and a propane torch.
It wasn’t the best tooling for the job.
But you don’t choose the farm life.  The farm life chooses you.

I’m tempted to mount the donor bikes head tube on a plaque and show it off like a first kill.


Offline BomberMann650

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Re: XXXs 750/3 trash can
« Reply #14 on: November 22, 2017, 11:07:59 AM »
Carbs got the royal treatment.
Triple buffed the caps and bowls.
6sigma jetting got the bike running perfect on the dyno.  13.5%A/F at the sniffer.

Offline BomberMann650

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Re: XXXs 750/3 trash can
« Reply #15 on: November 22, 2017, 11:31:38 AM »
Crafted a fiberglass seat and made it shiny!

Offline BomberMann650

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Re: XXXs 750/3 trash can
« Reply #16 on: November 26, 2017, 12:30:27 PM »
While the frame was off getting sandblasted and powdercoated.  Painted a number of small parts at home.  Stripped the tank of its oem paint and brush polished it.

Offline BomberMann650

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Re: XXXs 750/3 trash can
« Reply #17 on: November 26, 2017, 12:37:25 PM »
One the paint was dry, began the reassembly process.
Pretty straight forward job since much of the bike remained stock.
Minor parts were fabricated.

Offline BomberMann650

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Re: XXXs 750/3 trash can
« Reply #18 on: November 26, 2017, 12:50:25 PM »
Rewiring this bike turned into an actual mess.

1) deleted headlight on/off switch from right hand controls.
2) updated ignition from points to cdi
3) found out much of the diagram spec was innaccurate.

Getting the electrical on this bike involved 3 reg/rec swaps.
A replacement stator/field coil.
Additional grounds were made. 
A charging system wire was rerouted.
Headlight pigtail reconfigured.
The hired help charged $400 to sort the mess for me.  Ouch.

Offline BomberMann650

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Re: XXXs 750/3 trash can
« Reply #19 on: November 26, 2017, 01:04:49 PM »
The brakes on this bike became the other tricky part of the build.
As i came to realize there were a mismatched grab bag of worn out components in my parts bin.
3 sets of brakes, one completely different.  Two master cylinders, both ruined by corrosion.
A leaky hose and one more custom fabbed piece to shorten the length.  A necessity with the euro cafe sport bars.
Ended up with some slick looking levers off ebay.  But I’m not 100% sold on the m/c’s performance.  Yet.

Brake pad wear on parts bike was interesting to say the least.

Offline BomberMann650

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Re: XXXs 750/3 trash can
« Reply #20 on: November 26, 2017, 01:09:48 PM »
My old man got to take a look at his bike before we hauled it off to the show’n’shine.

Offline BomberMann650

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Re: XXXs 750/3 trash can
« Reply #21 on: November 26, 2017, 01:12:39 PM »
You can certainly tell which bikes are mine.

Offline BomberMann650

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Re: XXXs 750/3 trash can
« Reply #22 on: November 27, 2017, 12:13:23 AM »
The exhaust is the defining feature of almost every bike.
My local fabricator did not disappoint.
I handed him a bunch of trash to work with and he got it done!

This bike makes a statement goin down the highway.
Only thing that would make this exhaust better, is a fatter cam. 
Maybe some pipe wrap.

Offline SOHC4 Cafe Racer Fan

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Re: XXXs 750/3 trash can
« Reply #23 on: November 27, 2017, 08:27:19 AM »
Nice afterburners.
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 BomberMann650

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Re: XXXs 750/3 trash can
« Reply #24 on: November 28, 2017, 10:15:42 AM »
Nice afterburners.

You oughta hear this thing.  Triples make a rather exotic note.