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Author Topic: "Mile High" CB350 Four project  (Read 32939 times)

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Offline Denver_Larry

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Re: "Mile High" CB350 Four project
« Reply #100 on: April 17, 2017, 06:07:44 PM »
Also, a bit of an update on the frame mods...  I have things almost wrapped up with all this, I just need to weld in the threaded studs for the battery cage and drill the mounting holes in the cage itself.  I think I'll do some studs for the Motogadget brain and rectifier/regulator as well and then I can finally send it to powder coat!

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2005 RC51
1973 CB350F...project

Offline NobleHops

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Re: "Mile High" CB350 Four project
« Reply #101 on: April 21, 2017, 09:36:46 AM »
EXCELLENT
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Nils Menten * Tucson, Arizona, USA

I have a motorcycle problem.

My build thread: NobleHops makes a 400F pretty for his wife: http://forums.sohc4.net/index.php?topic=131210.0

Offline SOHC4 Cafe Racer Fan

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Re: "Mile High" CB350 Four project
« Reply #102 on: April 21, 2017, 10:55:29 AM »
What's going on there with your RC?
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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 Denver_Larry

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Re: "Mile High" CB350 Four project
« Reply #103 on: April 21, 2017, 11:12:49 AM »
Quote from: SOHC4 Cafe Racer Fan on April 21, 2017, 10:55:29 AM
What's going on there with your RC?
You mean my other money pit?!

That's the daily.  Only 5k miles on it so far, picked it up last fall.  It's got quite a few silly mods (rear brake, titanium hardware etc) at the moment, some more meaningful suspension upgrades will happen later this year hopefully.
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2005 RC51
1973 CB350F...project

Offline Denver_Larry

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"Mile High" CB350 Four project
« Reply #104 on: April 22, 2017, 06:35:42 PM »
Finished up getting the seat pan mounts built and welded in today.  All I have left now is to weld in some threaded studs for the battery mount, and I think I'm going to change up how the rear of the tank is secured.  The original mount is kinda chunky and ugly and will likely be visible still after the seat is upholstered.  I want something similar to how a modern sport bike tank is secured at the front, with a couple rubber isolated bolts.

THEN I can finally get it powdercoated!
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2005 RC51
1973 CB350F...project

Offline HondaMan

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Re: "Mile High" CB350 Four project
« Reply #105 on: April 22, 2017, 06:48:30 PM »
Can I make a small suggestion about the seat underpan? A drain hole, for those wet days? :)
Just a thought...I still remember the rusted-away frame tubes on the 750K1 where some of the holes did not get drilled in production.
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See SOHC4shop@gmail.com for info about the gadgets I make for these bikes.

The demons are repulsed when a man does good. Use that.
Blood is thicker than water, but motor oil is thicker yet...so, don't mess with my SOHC4, or I might have to hurt you.
Hondaman's creed: "Bikers are family. Treat them accordingly."

Link to Hondaman Ignition: http://forums.sohc4.net/index.php?topic=67543.0

Link to My CB750 Book: https://www.lulu.com/search?adult_audience_rating=00&page=1&pageSize=10&q=my+cb750+book

Link to website: www.SOHC4shop.com

Offline Denver_Larry

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Re: "Mile High" CB350 Four project
« Reply #106 on: April 22, 2017, 07:08:51 PM »
Quote from: HondaMan on April 22, 2017, 06:48:30 PM
Can I make a small suggestion about the seat underpan? A drain hole, for those wet days? :)
Just a thought...I still remember the rusted-away frame tubes on the 750K1 where some of the holes did not get drilled in production.

Sure you can!  There is actually some gaps built in around the shock mounts, and the front end of the tray will be stay wide open.
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1973 CB350F...project

Offline Jerry Rxman Griffin aka MuthaF'er

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Re: "Mile High" CB350 Four project
« Reply #107 on: April 23, 2017, 08:11:37 AM »
Looking great!
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As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline Denver_Larry

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Re: "Mile High" CB350 Four project
« Reply #108 on: May 08, 2017, 04:36:44 PM »
So I'm thinking ahead and considering getting my wheels/tires ordered up and I'm wondering if anyone has tried stuffing a 120/80 tire into the back of this thing.
I've crunched all the suspension numbers and after deciding I want to target a trail number close to 97mm, picking my front tire (110/80-18), finding a shock that gets me almost 1.5 degrees less rake on the fork, a 120/80 rear will get me the rest of the way..
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1973 CB350F...project

Offline Denver_Larry

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Re: "Mile High" CB350 Four project
« Reply #109 on: May 13, 2017, 04:52:17 PM »
Battery came in, along with my motogadget brain.  Went with a different battery so I had to mod the battery bracket a bit but I'm happy with how it came out.  I WAS going to weld studs on to secure the motogadget but I think I'll just drill the seat pan and use button head allens from underneath.  If I get them in black they will hardly be seen..


Any input regarding a 120 series rear tire on this thing?  Will it fit in the stock swingarm?
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1973 CB350F...project

Offline SOHC4 Cafe Racer Fan

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Re: "Mile High" CB350 Four project
« Reply #110 on: May 13, 2017, 04:57:20 PM »
Speedcell -- wow, you didn't mess around.  One of the best lithium based batteries out there - some even have a built in volt meter.  Speed Merchant uses them on their race bikes.
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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 HondaMan

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Re: "Mile High" CB350 Four project
« Reply #111 on: May 13, 2017, 07:06:30 PM »
Quote from: Denver_Larry on May 13, 2017, 04:52:17 PM
Any input regarding a 120 series rear tire on this thing?  Will it fit in the stock swingarm?

You may find that you have to run an extra link the the drive chain to let you move the axle back 1/2" for its 'first' slot. to move it away from the bow. I've seen them one the 350F before, though: the one I am thinking of had a 120/90-17" rear wheel, though (pseudo-chopper look).
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See SOHC4shop@gmail.com for info about the gadgets I make for these bikes.

The demons are repulsed when a man does good. Use that.
Blood is thicker than water, but motor oil is thicker yet...so, don't mess with my SOHC4, or I might have to hurt you.
Hondaman's creed: "Bikers are family. Treat them accordingly."

Link to Hondaman Ignition: http://forums.sohc4.net/index.php?topic=67543.0

Link to My CB750 Book: https://www.lulu.com/search?adult_audience_rating=00&page=1&pageSize=10&q=my+cb750+book

Link to website: www.SOHC4shop.com

Offline Denver_Larry

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Re: "Mile High" CB350 Four project
« Reply #112 on: May 13, 2017, 11:13:18 PM »
Not too worried about the height of the tire, it's the width.   Sounds like it will fit.
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2005 RC51
1973 CB350F...project

Offline Denver_Larry

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Re: "Mile High" CB350 Four project
« Reply #113 on: May 14, 2017, 04:00:14 AM »
Oh no black oxide!  Pro-bolt does a black finish for their stainless that will do just fine. 
As for the wiring I'm reasonably confident that I can manage that with the MU centered up as I'll probably be using an M-button to bus all the input wires.
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1973 CB350F...project

Offline Denver_Larry

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Re: "Mile High" CB350 Four project
« Reply #114 on: May 14, 2017, 02:02:56 PM »
That would be awesome Cal, PM incoming!
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2005 RC51
1973 CB350F...project

Offline Denver_Larry

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Re: "Mile High" CB350 Four project
« Reply #115 on: June 03, 2017, 01:57:53 PM »
More progress on the frame, I think I'm finally ready to powdercoat!  I have the major electrical components all placed and secured under the seat cowl.  Last thing on the pre-PC list was getting the tank secured and I've got that sorted this afternoon.

Before the cut:


After the cut and with the mounting plate welded in:


Mounting tab made and welded to the modified original mount:


Mounted with a more modern set of hardware:
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2005 RC51
1973 CB350F...project

Offline Denver_Larry

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Re: "Mile High" CB350 Four project
« Reply #116 on: June 03, 2017, 01:58:49 PM »
And BTW, a big shout out to Cal for contributing a motogadget goodie to the project!
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2005 RC51
1973 CB350F...project

Offline Denver_Larry

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Re: "Mile High" CB350 Four project
« Reply #117 on: June 14, 2017, 08:50:04 AM »
Progress!  The powdercoater sent some pics after the frame was dipped and stripped.  A trip through the media blaster is next, hope to have it back today or tomorrow!
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1973 CB350F...project

Offline Denver_Larry

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Re: "Mile High" CB350 Four project
« Reply #118 on: June 14, 2017, 12:59:09 PM »
After media blasting and a pre-bake:
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2005 RC51
1973 CB350F...project

Offline Denver_Larry

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Re: "Mile High" CB350 Four project
« Reply #119 on: June 15, 2017, 03:35:48 PM »
Got it back!  Color is a little darker than I was shooting for but I think it will be just fine.
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1973 CB350F...project

Offline NobleHops

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Re: "Mile High" CB350 Four project
« Reply #120 on: June 15, 2017, 03:37:46 PM »
It looks amazing. Did you fill the pits and voids in the frame Larry? If so, how? It looks like liquid, so nice.
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Nils Menten * Tucson, Arizona, USA

I have a motorcycle problem.

My build thread: NobleHops makes a 400F pretty for his wife: http://forums.sohc4.net/index.php?topic=131210.0

Offline Denver_Larry

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Re: "Mile High" CB350 Four project
« Reply #121 on: June 15, 2017, 04:18:07 PM »
Quote from: NobleHops on June 15, 2017, 03:37:46 PM
It looks amazing. Did you fill the pits and voids in the frame Larry? If so, how? It looks like liquid, so nice.

No I didn't get to crazy with that, but they did do a very nice job anyway getting it smoothed out..

Looking forward to your latest care package so I can get the motor in there!  I think it's already shown up at home but I won't be back there for a couple days.  Assembly starts on Saturday!  ;D
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1973 CB350F...project

Offline SOHC4 Cafe Racer Fan

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Re: "Mile High" CB350 Four project
« Reply #122 on: June 15, 2017, 04:21:25 PM »
That is a brilliant blue. It really pops.
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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 Denver_Larry

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Re: "Mile High" CB350 Four project
« Reply #123 on: June 15, 2017, 07:05:35 PM »
Thank guys.
Next question: what's the best way to get the original cush drives out of the rear hub?  Going to be taking it in for powder next week and I need them out..
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1973 CB350F...project

Offline NobleHops

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Re: "Mile High" CB350 Four project
« Reply #124 on: June 15, 2017, 08:18:58 PM »
Quote from: Denver_Larry on June 15, 2017, 07:05:35 PM
Thank guys.
Next question: what's the best way to get the original cush drives out of the rear hub?  Going to be taking it in for powder next week and I need them out..

Don't do it. Leave them be. Was an enormous pain in the ass, involving torches and pointy tools. Powder with them in, it's not like they can get much harder.
« Last Edit: June 15, 2017, 08:35:54 PM by NobleHops »
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Nils Menten * Tucson, Arizona, USA

I have a motorcycle problem.

My build thread: NobleHops makes a 400F pretty for his wife: http://forums.sohc4.net/index.php?topic=131210.0
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