Author Topic: CB750 Cafe racer  (Read 6845 times)

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Offline harald

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CB750 Cafe racer
« on: April 03, 2008, 01:39:11 PM »
I am in the progress of building my own cb 750 racer. I have taken some  pictures of my progress. the bike will be black with a silver tank. The oil tank is not org. and much bigger in order to avoid a oilcooler.
Lester wheels are both 18" which gives me problems with the front brake arm. Have to fix that . The electrics are under the seat. battery with be where the starter motor is. Frame is a cb750 K2 the engine is a F2 with all the works. Org F2 carbs.
« Last Edit: April 05, 2008, 12:56:16 AM by harald »

Offline harald

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Re: CB750 Cafe racer
« Reply #1 on: April 03, 2008, 01:46:14 PM »

I am building the engine F2 with 836mm big bore, with falicon rods, webcam etc. I wonder if the orginal F2 carbs are sufficient.  As you can see on the picture my workshop is nightmare.
« Last Edit: April 05, 2008, 12:59:07 AM by harald »

Offline harald

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Re: CB750 Cafe racer
« Reply #2 on: April 03, 2008, 01:53:36 PM »
Here is some more pictures
« Last Edit: April 05, 2008, 01:04:36 AM by harald »

Offline harald

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Re: CB750 Cafe racer
« Reply #3 on: April 03, 2008, 02:00:35 PM »
Forks are 38mm Marzocchi cb750k2 with K0 brakes ( not yet on) taken maybe from a honda Seely, found it some where in Denmark.

Offline harald

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Re: CB750 Cafe racer
« Reply #4 on: April 03, 2008, 02:30:39 PM »
Here is a picture of a fairing I bought on ebay Germany for my cb750, all there is to it is on the picture , no supports, no fairing screen. Does anybody know where it comes from?
« Last Edit: April 05, 2008, 01:08:09 AM by harald »

Offline stay youth

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Re: CB750 Cafe racer
« Reply #5 on: April 03, 2008, 05:28:09 PM »
the pictures seem to be an ok size when you click them, maybe just rotating them might be cool. Where did you get the giuliari seat? I need one for my 400f
1976 cb400f

Offline heffay

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Re: CB750 Cafe racer
« Reply #6 on: April 03, 2008, 05:32:41 PM »
My pictures are lousy how can I get them better/bigger?
don't take them at night.
+1 on the rotation.

were they bigger to start with? 
digital camera?
should be a setting on the camera unless it is a dinosaur and doesn't take any larger pics.
Today: '73 cb350f, '96 Ducati 900 Supersport
Past Rides: '72 tc125, '94 cbr600f2, '76 rd400, '89 ex500, '93 KTM-125exc, '92 zx7r, '93 Banshee, '83 ATC250R, 77/75 cb400f

Offline moham

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Re: CB750 Cafe racer
« Reply #7 on: April 03, 2008, 07:20:18 PM »
I dig those tires, as well.
78 750K-The Ocho
74 550-The Cherry Picker
70 750K0 motor-Dick in a Box

Offline heffay

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Re: CB750 Cafe racer
« Reply #8 on: April 03, 2008, 07:24:57 PM »
so... you went the pirelli route?   :D  oh... sorry about that.  i can't stop sometimes.   ;D
Today: '73 cb350f, '96 Ducati 900 Supersport
Past Rides: '72 tc125, '94 cbr600f2, '76 rd400, '89 ex500, '93 KTM-125exc, '92 zx7r, '93 Banshee, '83 ATC250R, 77/75 cb400f

Offline KB02

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Re: CB750 Cafe racer
« Reply #9 on: April 04, 2008, 04:53:23 AM »
battery with be where the starter motor is.

I'm wondering if that will give you issues with the battery overheating or getting cooked out?
1978 CB750K Project
2000 Ducati ST2
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My project thread Part I: K8 Project "Parts Bike"
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Offline c_packer

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Re: CB750 Cafe racer
« Reply #10 on: April 04, 2008, 05:40:16 AM »
Looks good so far! I would like to ask where you got that seat?
I'm a creep, I'm a weirdo. What the hell am I doin' here? -Radiohead-

Offline harald

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Re: CB750 Cafe racer
« Reply #11 on: April 04, 2008, 11:49:38 AM »
I will be sending more pictures saturday when I get the daylight.
The seat I got  from a friend who  is a Danish cb 750 freak and has about 6 or 7 cb750 starting from cb750K1 and up.  I had the seat pan sandblasted and repolstered by a prof here in Denmark. If you have a seat pan ir easy to get somebody to repolster it. I had a ekstra seat pan but it was too rusty so I threw it away. I will ask my friend if he has any more left.
The front wheel is wider then normal and the tire is 100/90 - 18.
About the battery, it is gel and can turned 90 degrees and take the vibes from the motor. About the temp. I will put insulation underneath it.
Since I removed the starter motor I going to kick start it and thats where my next problem lies. I bought RASK foot steps which are in the way of the kickstarter pedal.
can anybody help?

Offline KB02

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Re: CB750 Cafe racer
« Reply #12 on: April 05, 2008, 03:42:14 AM »
Try the kick starter lever off of an F model. There's a bit more bend to them and they often clear rearsets (not always, but worth a shot).
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 Terry in Australia

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Re: CB750 Cafe racer
« Reply #13 on: April 05, 2008, 04:24:27 AM »
Nice looking bike Harry, that fairing looks like the Rickman I've got hanging in my garage. Cheers, Terry. ;D
I was feeling sorry for myself because I couldn't afford new bike boots, until I met a man with no legs.

So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

"Crazy is a very misunderstood term, it's a fine line that some of us can lean over and still keep our balance" (thanks RB550Four)

Offline harald

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Re: CB750 Cafe racer
« Reply #14 on: May 23, 2008, 12:22:42 PM »
At last finished with my project.
Thanks for all your help.

Offline heffay

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Re: CB750 Cafe racer
« Reply #15 on: May 23, 2008, 01:42:32 PM »
looks great!

so, tell us everything you did...
Today: '73 cb350f, '96 Ducati 900 Supersport
Past Rides: '72 tc125, '94 cbr600f2, '76 rd400, '89 ex500, '93 KTM-125exc, '92 zx7r, '93 Banshee, '83 ATC250R, 77/75 cb400f

Offline andy750

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Re: CB750 Cafe racer
« Reply #16 on: May 23, 2008, 01:58:39 PM »
What happened to the gold fairing in the previous photo?? That looked supercool! If you dont want it can I buy it from you???? Please!!  ;D

Good work on the bike - looks very sharp!

cheers
Andy
Current bikes
1. CB750K4: Long distance bike, 17 countries and counting...2001 - Trans-USA-Mexico, 2003 - European Tour, 2004 - SOHC Easy Rider Trip , 2008 - Adirondack Tour 2-up , 2013 - Tail of the Dragon Tour , 2017: 836 kit install and bottom end rebuild. And rebirth: http://forums.sohc4.net/index.php/topic,173213.msg2029836.html#msg2029836
2. CB750/810cc K2  - road racer with JMR worked head 71 hp
3. Yamaha Tenere T700 2022

Where did you go on your bike today? - http://forums.sohc4.net/index.php?topic=45183.2350

Offline harald

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Re: CB750 Cafe racer
« Reply #17 on: May 24, 2008, 02:28:33 PM »
Well I did what I could, big bore and all the other goodies except CR carbs, Ihave F2 carbs on now but will change them to CR carbs soon.
Andy if you want the yellow fairing you can have it for the same price I bought it. Thats about 50 dollars plus shipping or we could trade if you have spare parts.

Offline andy750

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Re: CB750 Cafe racer
« Reply #18 on: May 24, 2008, 02:39:47 PM »
Thanks Harald - PM sent.
Current bikes
1. CB750K4: Long distance bike, 17 countries and counting...2001 - Trans-USA-Mexico, 2003 - European Tour, 2004 - SOHC Easy Rider Trip , 2008 - Adirondack Tour 2-up , 2013 - Tail of the Dragon Tour , 2017: 836 kit install and bottom end rebuild. And rebirth: http://forums.sohc4.net/index.php/topic,173213.msg2029836.html#msg2029836
2. CB750/810cc K2  - road racer with JMR worked head 71 hp
3. Yamaha Tenere T700 2022

Where did you go on your bike today? - http://forums.sohc4.net/index.php?topic=45183.2350

Offline Terry in Australia

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Re: CB750 Cafe racer
« Reply #19 on: May 24, 2008, 05:09:04 PM »
Hey Harald, where are you getting all these Rickman fairings from? Hey if you want some 29MM CR's let me know, my almost new set (with less than 100 miles on them) might be coming off in preference to a set of Mikuni 29mm smoothbore carbs I just bought? Either way, one set is getting the chop! Cheers, Terry. ;D
I was feeling sorry for myself because I couldn't afford new bike boots, until I met a man with no legs.

So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

"Crazy is a very misunderstood term, it's a fine line that some of us can lean over and still keep our balance" (thanks RB550Four)

Offline harald

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Re: CB750 Cafe racer
« Reply #20 on: May 25, 2008, 01:40:59 PM »
Hi Terry,
I found my Rickmann fairing in Denmark, my friend had it in his attic, I would like to buy your CR carbs if the price is right  ;D

Offline Terry in Australia

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Re: CB750 Cafe racer
« Reply #21 on: May 25, 2008, 09:15:58 PM »
I'm sure that gold one's a Rickman too Harald, I've got the same one (but for a CB500/550) hanging in my garage. PM me an offer on the CR's mate, they're new, I still have the box and all the books and bits that came with them, they've never even been in the rain!

They come with a newish set of K@N pod filters that cost 200 bucks here in Oz, but the two outer ones are a tight fit against the frame. Still work fine and look great behind the OEM sidecovers, but I don't want you swearing at me in Danish, ha ha! Cheers, Terry. ;D
I was feeling sorry for myself because I couldn't afford new bike boots, until I met a man with no legs.

So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

"Crazy is a very misunderstood term, it's a fine line that some of us can lean over and still keep our balance" (thanks RB550Four)

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Re: CB750 Cafe racer
« Reply #22 on: May 26, 2008, 02:35:47 AM »
but I don't want you swearing at me in Danish, ha ha! Cheers, Terry. ;D

Why not terry, you could use them on your wife and she would never know what you were saying ;D ;D ;D