Project CB750 - Printable Version

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Project CB750 - Printable Version

+- Madison Motorsports (https://forum.mmsports.org)
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+--- Thread: Project CB750 (/showthread.php?tid=6812)

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- Maengelito - 12-28-2007

Kaan Wrote:oh and RJ tried to run his first bead last night!

anal?

- .RJ - 12-28-2007

[Image: IMG_8462.JPG]

- .RJ - 03-19-2008

Some progress since the last post -

Gas tank modification to clear the carbamaphone linkage and relocate the fuel tap - the gas tank is from a CB500, so it doesnt exactly bolt up.

[Image: IMG_1036.jpg]

Battery tray

[Image: IMG_8546+_Large_.JPG]

Brake fruid reservoir mount and exhaust hangar (home depot racing supply)

[Image: IMG_8550+_Large_.JPG]

Some sweet new air filters

[Image: IMG_9204.jpg]

Building the wiring harness:

[Image: IMG_9267.jpg]

Supposedly all of this shit fits in the headlight bucket...

[Image: IMG_9276.jpg]

I like this bike because it has lots of built in PBR holders

[Image: IMG_9280.jpg]

Doesnt look like much but its ready for the starter relay, voltage regulator and rectifier - waiting on them in the mail from ebay.

[Image: IMG_9282.jpg]

Whats left? Oil tank went out for powdercoat last week and should be done soon. Wire in relays for the headlight and ignition coils (there arent any stock), make a license plate bracket, buy ignition coils/electronic ignition plate (I am tossing the stock points ignition - so sad Sad

), buy a front brake line, have the gas tank cleaned, coated inside and painted, and of course a few other little odds and ends. Getting ever closer...

- Maengelito - 03-20-2008

is that the $10 craftsman digital multimeter we recommended for your VW?

:wink:

also, i like how many cans of UG you can see in this pic

.RJ Wrote:

- ViPER1313 - 03-20-2008

Easier to see RJ's stash in this pic -

[Image: IMG_9283.jpg]

- .RJ - 03-20-2008

Maengelito Wrote:is that the $10 craftsman digital multimeter we recommended for your VW?

:wink:

Same one I've always had. I almost bought the $10 one as a replacement because the screen is getting really ugly - that deal still on?

- .RJ - 03-23-2008

Main wiring loom is just about done - kill/starter switch wired in and some connectors replaced - I've got 12V at the ignition coils and starter relay Smile

Hooray lights!

[Image: IMG_9522.jpg]

And the 'rats nest' is done.

[Image: IMG_9524.jpg]

Still need a headlight switch and a few other bits, next week I'm going to order ignition coils and my oil tank should be done. Oil + spark = hopefully a running motorbike!

- .RJ - 04-08-2008

License plate/brake light mount done, and oil tank back from the powdercoater - looks fantastic Smile

- Dropped off some parts at a machine shop to get the rear brake hooked up, need some aluminum bushings made.

- Should have a front brake line sometime next week

- ignition parts on the way (coils, wires, plugs).

Hopefully, now that I've got something to put the oil in, and I'll have ignition, I can fire it up Confused

hock: And if I have brakes, I could ride it too!

Once thats done... few more wiring tasks to do - I want to clean up the starter relay wiring, wire in relays for the ignition coils and headlight, add a fuse box (they didnt have fuseboxes in 1971 I guess), and hook up the voltage regulator.

- .RJ - 04-11-2008

More progress!

Rear brake hardware is all sorted out and brake works - at least, in the garage... I hope I have enough leverage on the road but if not I can always change it Smile

The problem this was trying to solve is locating the rod end inside the stock drum brake lever - its perfect, Allied Machine in Falls Church did the work for me.

[Image: IMG_9639.jpg]

Any concerns I had about the LED brake light not putting out enough oontz are gone....

[Image: IMG_9663.jpg]

And since Phil's CB400 is living in my garage... why not see what the tank looks like?

[Image: IMG_9644.jpg]

Hmm... fuel tap in the right place

[Image: IMG_9653.jpg]

Plenty of handlebar clearance

[Image: IMG_9664.jpg]

Mounts right up front and back

[Image: IMG_9645.jpg]

Loads of room under the tank for coils, wiring, etc.

[Image: IMG_9657.jpg]

The problem is clearance for the carbamaphone slides - I need another 3/4" of clearance for these suckers, and its right up against the side of the tank. I'm going to take a closer look at it, and if its doable then I'm going with the CB400 tank - if it needs cutting and welding I'll take it out to piper and talk it over.

[Image: IMG_9654.jpg]

- Andy - 04-12-2008

Very cool. You should ride this thing out to cali. The ass pounding would suck but the stories should last you a lifetime.

- ScottyB - 04-12-2008

i love the rear 3/4 view that shows off the "bobtail" kind of look. such a simple, clean bike.

- .RJ - 04-12-2008

[Image: IMG_9675.jpg]

- Feersty - 04-12-2008

Very cool. Rear turn signal indicators?

- .RJ - 04-12-2008

[Image: safetey_signals6932.jpg]

- Dave - 04-12-2008

You know, i give you a lot of shit about the old geezer bike, but you've done a magnificent job on this. Looks great!

- .RJ - 04-14-2008

Its christmas time in hollis queens! All of my ignition bits and some misc honda parts arrived. Yay!

[Image: IMG_9694.jpg]

Filled it up with oil and after laying into the starter for about a minute, I've got oil pressure Smile

And a brake line Smile

Coils mounted...

[Image: IMG_9699.jpg]

Mechanical ignition advance :lol:

[Image: IMG_9705.jpg]

All finished up

[Image: IMG_9708.jpg]

The spark plug wires have to be cut to length, and then I need to set the ignition timing.... so at some point this week or next I'm gonna see if she runs Confused

hock:

- xvxax - 04-14-2008

+1 for Allied Machine Works. Those guys are real laid back and have done some work for me including a CZ swing arm bolt which I thought they would never find the proper thread for, but for some reason they had it and they did it same day for cheap.

- .RJ - 04-15-2008

Ok, after seeing this: <a class="postlink" href="http://dotheton.com/index.php?topic=3410.0">http://dotheton.com/index.php?topic=3410.0</a>

I'm thinking Idea

:!:

Why didnt I think of that? Probably because I'd rather obfuscate the issue by adding complexity, rather than using stock honda components - which is generally the goal for this project as stock parts are generally easy to find and replace. I had the rod end mount cut and relocated (welded) on the brake pedal to pull the threaded rod properly.

I'm not 100% happy with the amount of leverage on the rear brake (too much travel in the pedal, and potential clearance issues), and I'm also not 100% happy with the brake pedal as it came from a crashed bike and half the pedal is ground down.

So, I'll find another brake pedal and re-tool the solution, and chalk it up to a learning experience to step back and look for the simple solution.

For the rear of the brake (the lever pull at the drum) i am 100% happy with it - so that part is good.

- .RJ - 04-16-2008

Made a test light so I can set the ignition timing. I didnt actually do anything with it though... maybe tomorrow... and I havent put together the ignition wires yet either.

The goons at cell pho... er radio shack had no idea what a test light is. Oh well....

[Image: IMG_9713.jpg]

- Ginger - 04-16-2008

At least it matches the bike...