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Messages - ChrisOnABike

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1
CB750 / Re: Where is the Battery??
« on: September 02, 2014, 03:04:50 PM »
Wow, I would have never thought of a show bike that did not run.  Such a waste of good parts.  It also looks like there is a small switch just under the end of the tail section.

I think I would cut in a section of the petrol tank to house the battery.

The simple look of this particular machine is one I am using to base my own build from, but mine will probably need a battery.

Thanks for the replies.

2
CB750 / Where is the Battery??
« on: September 02, 2014, 04:23:34 AM »
This might not be 750 specific, but that's what I'm working on so I'm asking this here.

In the linked photo, where is the battery?  Looks like a stock tank so I doubt it's inside, and I don't see any other place for it.  The tail looks way too small to hold it in there.

Does the bike even need a battery?  I know most systems run off the battery and the charging system just keeps it topped off.  Does this system work differently?

Thanks

http://bihamoto.sk/content/images/articles/73.jpg

3
CB750 / Re: Cafe Racer Seen Tonight
« on: August 21, 2014, 12:31:57 AM »
What is the purpose of the disks around the front hub?  Are they just for looks?  That's a very clean bike.

4
CB750 / Re: The Project Begins
« on: August 19, 2014, 12:50:52 AM »
Thanks for the oil tip.  In my mind, the actual build of the tank is somewhat complex and does take the heat of the oil into consideration.  If I really do get to building it the way I want I will definitely be showing pictures of the build.

Looking forward to having fun with this thing!   No to find an F1 rear hub….

5
CB750 / Re: The Project Begins
« on: August 18, 2014, 12:01:31 AM »
And the muffler…….   I have a very elaborate plan layed out in my mind for that too.  I want 4into1 header immediately at the front corner of the frame.  From there it will go into a muffler of my own building that will be completely contained under the frame and exit at the back corner - right or left I have not decided yet, but probably the right so it stays away from the kickstand.  Something like a Buell system that I had seen.  This means I will not be able to keep the center stand which is a shame as I really like it, but I don't want the exhaust anywhere on the side or back of the bike.  One of these days I'll actually draw this out and post it.

6
CB750 / Re: The Project Begins
« on: August 17, 2014, 11:54:35 PM »
If you can wrap your head around it, the look I want is somewhere in between these two images:

http://fc01.deviantart.net/fs70/f/2012/186/9/3/honda_cb_750_fab_four_cafe_racer_by_obiboi-d561hhz.jpg

and

http://bihamoto.sk/content/images/articles/73.jpg

The tank will be the biggest part and there's no way I can totally put it in words.  One of the main things I wanted to do was relocate the oil tank into the front right corner of the gas tank and use a double filler cap set up on the top of the tank like you would see on some GP race bikes, one cap for gas and the other for oil.  I can picture it in my mind very well, and I used to do metal work so I know I could make it happen given access to the proper tools - an English Wheel and a metal stretcher.  The length of the tank would be closer to the first link on the drawn up race bike.  No idea what colour I want it though.  It must have a tail of some sort.  I don't like the stubbies much. 

The shocks on the back need to be relocated to give more angle and thus a softer ride.  I watched Husqvarna do this on their desert bikes in the late 80's.  I want to keep the dual rears though - no mono shock, and I'm not looking for a soft ride, just softer than it has now.  I already have a few different plans in my head on how to do this.

One thing about putting on the GL front end, I picked up another disk rotor and I want to see if I can add it to the opposite side of the stock hub to see where they fall in relation to the calipers.  I would absolutely love it if Honda used the same rotors on the GL as the CB and adding that second rotor would give me the dual set up I want (but I'm sure it won't happen).  For the rear I would like to add a disk and the easiest way I can see that happening right now is to pick up the conversion kit from cyclexchange.com.  I want to keep spokes on it if possible.  Maybe a rear off a CBX1000 with a disk, then I could just work it for the caliper brace to fit.  The spacing shouldn't be too far off.

7
CB750 / Re: The Project Begins
« on: August 17, 2014, 10:22:45 PM »
Well, It looks like I have a K2 after all.  No telling how many years this thing had been sitting before I got it so I'm not surprised the seller was wrong.  He bought it to restore also and just had too much going on.  Such is the way it goes.

So, the engine number is: CB750E-2050711
The vin number is: CB750-2042888

This should be fun  :)

8
CB750 / Re: The Project Begins
« on: August 17, 2014, 02:58:46 PM »
The build date is 6/72.  I was told it was a '73 model year.  I thought the front tire looked strange because it was just flat.  If there is any other reason for it, I have not found out yet. 

The engine and frame were all I was interested in.  It'll be a Cafe Racer when I'm done.  First thought was to build it for my daughter, but if it turns out too nice I'll have to build her a different one ;-)  I already have a set of GL-1000 forks on the way and also have a set of R1 forks.  Not sure which way to go with it yet.  I'm looking forward to this, but I'm also not in a hurry.  I'll bring this thread back and post pics as it goes for sure.

9
CB750 / Re: Calipers in front of or behind fork legs
« on: August 17, 2014, 05:35:06 AM »
I'll bet you're right, they would be fine because I'm sure Honda knew what they were doing.    Still… aesthetics and a little extra strength never hurt (much).

10
CB750 / Re: 750 (810) Racer.
« on: August 17, 2014, 05:32:25 AM »
That looks like a fun ride!

11
CB750 / The Project Begins
« on: August 17, 2014, 05:30:42 AM »
So, I've finally been sucked into a project so far that I actually started it!  Most projects keep to the "Idea" phase and never get off the drawing board.  This time, I've taken that first step and bought the bike.

I wanted to share the "Before" pictures.  I enjoy this stuff too so I figured you all might also.  I'm always open to thoughts/ideas/criticism/suggestions… etc, so please say what ever is on your mind about this, good or bad.

I have a more than two or three pictures so I'm posting a link instead of taking the bandwidth to post them all here.  The link is to a folder in my photo gallery on Deviant Art and should not contain any kind of spam or pop-ups.

Hope you all enjoy the pics,
Chris

http://christophersacry.deviantart.com/gallery/50808724/Devious-Folder

12
CB750 / Re: Calipers in front of or behind fork legs
« on: August 11, 2014, 12:45:52 AM »
I'm just getting into this project, picked up the bike last week.  I found and ordered a set of forks from a '78 GL-1000 so I'll be working on getting that set up for the braking system.  I'm planning about two years for this project, no rush on it, just need something I can fiddle with when I need to get away from daily stuff.  I'll try to get some pics up as I go.

Right now I can say that the plan is to head towards this direction:
http://1.bp.blogspot.com/-EOuN_cXFbt4/Ud6qrdaeRRI/AAAAAAAAvKs/jb9cIlESsIY/s1600/honda+cb+750+fab+four+by+oberdan+bezzi.jpg

with a lot of side-tracked directions thanks to google images and all who have done this before me.

13
CB750 / Re: Calipers in front of or behind fork legs
« on: August 10, 2014, 09:52:31 PM »
Thanks guys, I appreciate the responses.  I just think it would be safer for the calipers to push on the fork leg itself instead of pulling on the bolt tabs during braking.  I'm sure it's a million to one shot that the tabs would ever break, but why take the chance.  And, aesthetically, it looks nicer with the calipers on the back side of the fork leg.

14
CB750 / Calipers in front of or behind fork legs
« on: August 10, 2014, 05:39:16 PM »
I was wondering if it is safe to turn the fork legs around to put the disk calipers behind the fork legs so they are pushing on the leg instead of pulling on two little tabs?

Is this a doable mod?  Has it been done before? 

Thanks for any thoughts/help.

Chris

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