Author Topic: Building an Aluminum(alloy) CR750 Gas Tank......OHIO CAFE RACERS  (Read 20310 times)

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Offline ohiocaferacer

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Building an Aluminum(alloy) CR750 Gas Tank......OHIO CAFE RACERS
« on: February 15, 2008, 07:31:13 PM »
Started the new alloy CR750 tank tonight. Made some progress.....took some pics and vid of the build.
Hopefully i'll be able to film a "How To" on building this tank, to let you guys see how these tanks are built.
Heres a couple pics from tonight....and will have some video of the build, posted here in a few.



Some of these videos are pretty long....grab a cold one.....sit back and enjoy
[youtube=425,350]KmK20v3XRpc[/youtube]
[youtube=425,350]u_bVH2Nv3SE[/youtube]
[youtube=425,350]oGQ6T4hI3Ds[/youtube]
[youtube=425,350]mAnBafXXN2E[/youtube]
[youtube=425,350]39g6mkJh_C8[/youtube]
[youtube=425,350]6OjVW4zc7Mg[/youtube]
...new video Sunday 2/17/08
[youtube=425,350]UuAyo7d6HqQ[/youtube]
[youtube=425,350]_FjQF8oVz3w[/youtube]
More soon,
Greg
www.OHIOCAFERACERS.com
« Last Edit: February 17, 2008, 07:57:08 PM by ohiocaferacer »

Offline Godffery

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Re: Building an Aluminum(alloy) CR750 Gas Tank......OHIO CAFE RACERS
« Reply #1 on: February 15, 2008, 08:54:23 PM »

   Hey ohiocaferacer ;

been checking out your web site for some time now, Really like your work.   What Gage alloy are you using ?  Looking forward to the video !

Godffery
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Offline 754

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Re: Building an Aluminum(alloy) CR750 Gas Tank......OHIO CAFE RACERS
« Reply #2 on: February 16, 2008, 08:46:33 AM »
Cool, should be very interesting..
not like the TV shows that show you 7 minutes of a 3 day job..
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Lost quite a few CB 750's along the way

Offline ohiocaferacer

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Re: Building an Aluminum(alloy) CR750 Gas Tank......OHIO CAFE RACERS
« Reply #3 on: February 17, 2008, 12:38:39 PM »
Thanks guys.....i'll try and post new videos as the tank gets closer to being finished.

Offline bgfootball67

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Re: Building an Aluminum(alloy) CR750 Gas Tank......OHIO CAFE RACERS
« Reply #4 on: February 20, 2008, 08:47:57 AM »
Looks like the CR 750 tank is coming along just fine.  Love the videos, you do good work I do not care what Jesse says about you.  Did you hear Jesse got a new toy?  Can you say Paul Smart........

You can have that 76 CB 750 in the garage if you like to build a complete CR 750?
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Offline KB02

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Re: Building an Aluminum(alloy) CR750 Gas Tank......OHIO CAFE RACERS
« Reply #5 on: February 24, 2008, 10:49:47 AM »
I watched all the vidoes I could find this morning. Episodes intro through 7. My mouth was watering... I used to wonder why the costs of tanks are as high as they are. Now I know. That's a lot of labor going into those tanks.
« Last Edit: March 16, 2008, 05:26:35 AM by KB02 »
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Offline tinyrobot

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Re: Building an Aluminum(alloy) CR750 Gas Tank......OHIO CAFE RACERS
« Reply #6 on: March 04, 2008, 02:14:59 PM »
bump for updates  ;D

Offline KB02

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Re: Building an Aluminum(alloy) CR750 Gas Tank......OHIO CAFE RACERS
« Reply #7 on: March 22, 2008, 05:34:55 AM »
Bump again... Any progress on the tank?
1978 CB750K Project
2000 Ducati ST2
...and a pedal bike

Join the AMA today!!

My project thread Part I: K8 Project "Parts Bike"
My project thread Part II: Finishing (yeah, right) touches on Project "Parts Bike"

Offline ohiocaferacer

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Re: Building an Aluminum(alloy) CR750 Gas Tank......OHIO CAFE RACERS
« Reply #8 on: March 22, 2008, 07:14:11 PM »
Sorry guys...been busy with customers. Have to take care of the paying customers first...then I can do my projects.

Actually....have made a little progress since the last video's......just havent had time to post them.

Promise will update here soon.....I HOPE!!

Greg

Offline dustyc

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Re: Building an Aluminum(alloy) CR750 Gas Tank......OHIO CAFE RACERS
« Reply #9 on: March 22, 2008, 07:46:09 PM »
I hear one of your tanks is coming this way.  I can't wait to see one in person.  I told the guy that ordered it about the forum.  Maybe he'll show up here.
1977 CB750

Offline UnCrash

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Re: Building an Aluminum(alloy) CR750 Gas Tank......OHIO CAFE RACERS
« Reply #10 on: March 22, 2008, 07:49:27 PM »
Nice work.  Thanks for posting those videos.

Makes me want a TIG welder!
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Offline Joel

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Re: Building an Aluminum(alloy) CR750 Gas Tank......OHIO CAFE RACERS
« Reply #11 on: March 22, 2008, 08:29:47 PM »
Are aluminum replicas of the stock 750 tanks available?

What're the differences in capacity and weight between this alloy CR tank and the stock CB tank?

Offline tinyrobot

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Re: Building an Aluminum(alloy) CR750 Gas Tank......OHIO CAFE RACERS
« Reply #12 on: April 08, 2008, 08:09:32 AM »
Greg,
Any updates on these tanks?  This pile o money I have for one of these is just laying here  ;)

Offline tinyrobot

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Re: Building an Aluminum(alloy) CR750 Gas Tank......OHIO CAFE RACERS
« Reply #13 on: January 08, 2009, 08:45:58 AM »
Any updates?  Maybe have some ready for the 2009 season?

Offline ksmith0034

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Re: Building an Aluminum(alloy) CR750 Gas Tank......OHIO CAFE RACERS
« Reply #14 on: January 20, 2011, 02:13:06 PM »
Hey Greg, I know this thread is a hundred years old, but I gotta know what ever happened with the CR750 tank build.  There's nothing on the site about it either...
It took 10 years but she's finally done!
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Offline bgfootball67

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Re: Building an Aluminum(alloy) CR750 Gas Tank......OHIO CAFE RACERS
« Reply #15 on: January 20, 2011, 05:08:19 PM »
He still has not finished my tank!
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Offline ksmith0034

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Re: Building an Aluminum(alloy) CR750 Gas Tank......OHIO CAFE RACERS
« Reply #16 on: January 20, 2011, 05:57:01 PM »
Yikes!!
It took 10 years but she's finally done!
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Stocker 2 Rocker CAFE conversion

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Offline ohiocaferacer

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Re: Building an Aluminum(alloy) CR750 Gas Tank......OHIO CAFE RACERS
« Reply #17 on: January 21, 2011, 09:20:40 AM »
He still has not finished my tank!
It was shipped......what you never got it???? ;D ;D

Hey Greg, I know this thread is a hundred years old, but I gotta know what ever happened with the CR750 tank build.  There's nothing on the site about it either...

Sorry......stopped building tanks a couple years ago. Building the tanks and working on the bikes is a hobby......and the tanks were starting to take away time from the family. Also....my son and I were starting to do more racing.....so I wanted to spend more time with him. He's growing up fast....and I didnt want to miss out.

Who knows......maybe sometime here in the future....if time allows.....I will start building more tanks.

Offline bgfootball67

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Re: Building an Aluminum(alloy) CR750 Gas Tank......OHIO CAFE RACERS
« Reply #18 on: January 21, 2011, 03:35:10 PM »
Must have gotten lost in the mail????  HA!  I filed a claim with the representative at OCR, didn't you get it?
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Offline Flying J

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Re: Building an Aluminum(alloy) CR750 Gas Tank......OHIO CAFE RACERS
« Reply #19 on: May 21, 2011, 10:55:31 PM »
I want to build my own tank so bad. i bought a tig welder and i have a line on an english wheel and planishing hammer. I studied the pictures on the ohio web site but have not taken the plunge yet. Any help, advice, templates, anything would be awesome.

Offline SoyBoySigh

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Re: Building an Aluminum(alloy) CR750 Gas Tank......OHIO CAFE RACERS
« Reply #20 on: September 08, 2012, 11:19:03 AM »
Anybody doing #$%* in alloy, who wants to build as light-weight as steel or better, should be looking at "Flow Forming" gas tanks parts, and brazing them together in a furnace using Nocolok flux type of #$%*. Best information and tools and resources for working in alloy in the traditional aircraft and motorcycle type of technologies, warbird restoration one-off race car restoration etc, you need to look at TinManTech he's on youtube and he's got a site and store, but also has workshops and schools for teaching aluminum welding -gas welding that's stronger by far than TIG it's something that you can see in his youtube vids. Really cool guy, great products great prices. I'm thinking about this here CB1100R gas tank and having replicas made, and I've gotta get in touch with the dude about it.

-S.

Offline Flying J

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Re: Building an Aluminum(alloy) CR750 Gas Tank......OHIO CAFE RACERS
« Reply #21 on: September 08, 2012, 11:53:12 AM »
Yeah it was called "alumalloy". I have seen the infomercials.

Offline SoyBoySigh

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Re: Building an Aluminum(alloy) CR750 Gas Tank......OHIO CAFE RACERS
« Reply #22 on: September 16, 2012, 12:29:51 PM »
Not the same #$%* at all. The Tin Man's rod is what they used back in the day for gas WELDING aluminum. He's really critical of all of the crap they're selling these days too. From what I gather, soldering brazing and welding are three broadly different processes and any claim to be able to do all three is bogus. You should at least check out his vids on how much stronger Aerobraze is than TIG/MIG alloy welding. The gas method leaves a homologous material that's workable, such that you can planish and wheel sheets that are joined without cracking them apart along the joint line. The reason the common rods are so good on all of the cast stuff, is the cast stuff is so weak that it'll break even before a lousy solder joint will fall apart. I've tinkered with it aplenty. What I'm proposing isn't anything new, I'm talking about the technologies the old masters used when building all of the race bike tanks and fairings and cowls and what-not, not to mention all of the aeronautical applications of the pre-jet age, when aluminum was still the choice structural component, before all of the weird duralumins and the like came along with their own unique tech.

I don't know about ya'll, but for an alloy tank on my bike, I don't want wall thicknesses more suitable to a monocoque frame, or rear-set bracketry, or engine covers etc. The tank ought to be light first and fore-most. If it's not lighter than a steel tank of equivalent shape and size, why in the hell are you using alloy in the first place? This is why I'm talking about the flow-forming and #$%*. Let the rounded domed shape carry the structure, just like an egg shell, rather than something more like a ... an okra pod, with several seams down it's length. All of the fibreglass #$%* out there scares me how easy it was back in the '70s and often still is, for people to just jump into working with the stuff with little or no understanding of how to engineer it, just an image in their head half-baked from Roger Dean album cover paintings and science fiction movies. Meanwhile the old technologies languished and few sought to learn how to use them when everything could be made cheaper and quicker with the new materials. But yeah, this TinMan guy has brought a lot of that old school stuff out and dusted it off. It's not gimicky new #$%* at all.