CB750 scrambler project

[Louis-DT-WR]

[Louis-DT-WR]

[Louis-DT-WR]

[Louis-DT-WR]

[Louis-DT-WR]

@Louis-DT-WR

https://i.imgur.com/SMrt9xl.gifv

[pedrobatista10]

woow, looking great.

your bottom forks what you used? powder coating?

[Calum]

Yes yes yes yes yes!

Looks like an awesome project!

[Louis-DT-WR]

@Calum thanks, it's a bit of a crazy one. Time consuming too.
Still need the engine but looking for a decent at a good price

[Louis-DT-WR]

@pedrobatista10 which part?
The front forks aren in good condition.
Swingarm is powder coated

[pedrobatista10]

@Louis-DT-WR i mean where the calippers mount on the fork. that black is original? it looks great thats why i asked. i may need to do the same on my rs250 forks.

[Louis-DT-WR]

@pedrobatista10 it's original. Matt black.

Got my front tyre on

[NINJA]

@Louis-DT-WR A twin disc set-up sweettttttt!!!!

[Louis-DT-WR]

@NINJA yes indeed, it's the R6 front wheel

[NINJA]

@Louis-DT-WR Are you building this for off-road on on-road use, or a bit of both?

[Louis-DT-WR]

@NINJA road and gravel tracks but mostly for the fun of building it.
The bikes too heavy for off-road and the suspension is too hard and not enough travel.

It's a bit of a madmax/walking dead type of bike

[Louis-DT-WR]

Together they look like this.

Brat style

[Louis-DT-WR]

Frame is now powdered
New tapered headset bearings installed.
Front end half on
New top bushes for the rear shocks to make it compatible.
Here's a little mock up.

Just waiting for my new bike lift to come.
I've got some pod filters on order + crank case vent filters.
Rejetted carbs using an online calculator (I will fine tune but as a starting point for the intake and exhaust mods)

I have a slightly nicer/longer seat now which will suit my stealth appearance.

It's very hard to visualize in your head but I think it's looking more or less like how I hoped

[Louis-DT-WR]

After a bit of haggling I got an engine from a 12k mile bike (running) with warranty. I believe that is genuine, I will remove sump and cam cover to inspect+ comp test. And flush the lubrication system.

However the seller advertised it as a CB 750 nighthawk 1992 to 2003. It looks identical apart from what I couldn't see in the pictures.... It has No clutch arm!. Meaning it needs a hydraulic slave cylinder.

Also the electrics are not compatible with my loom, the cbx750 engine has loads more wires for shift lights, selector drum position etc.
I've now got to get the pulse generator sorted, source the main generator+ cover, starter motor+ cover.
The CBX has larger valves, maybe just exhaust?
Both engines have pros and cons.

Right enough spending for a bit luckily selling some old DT parts has really helped.
A bit of elbow grease and this engine really came up .... I haven't even painted it

Thinking about mounting the lights to this and using the slots for height adjustment.

[markus.w]

@Louis-DT-WR loving the build so far. I fell in love with honda back in the late 90's after owning an nc30 for a couple of years. I must say for a "probably going to take a long time" project, (your words) lol. You have sure progressed quickly enough. At this rate you'll be riding it within the next week or two.

[Louis-DT-WR]

@markus-w thank you, I still need so many parts.

I have no experience with these bikes so i don't know how anything goes.
I need all the brake/ clutch hoses, front will have to be custom.
Levers, pedals, footrests, controls. Cables.
The biggest headache is the electrics.

I can't understand why it's a push pull cable on the diagrams when the CV carbs are sprung loads on the butterfly valves. Doesn't make sense.

This engine is all new to me, I can't get any information about what year and model bike it is. Engine code is RC17E.

I'm not entirely sure if this is a breather pipe or a return pipe ..,.
Can see it on diagrams, it looks like it bridges the two sides of the cylinder assembly.