Search results

Nice! I'm staying with all original parts. Not changing anything in the line of drive except a wider rim and tire.

I was curious about that because Cognito moto sells the kit with sprockets for the early models to run a wider tire. The '77-'78 have no need for the sprocket conversion. I always assumed it was d/t sprockets not the shaft output.

I was curious. I am using the stock sprockets on my '78 because I am running a 160 tire on back. The stock '77-'78 sprockets allow for a tire that wide with no modifications or spacers. Unfortunately it runs the 630 chain.

What do you use on the rear?

If you are wanting oem style then 4to1 offers a complete wiring harness (plug and play) for about $75 but will need to be adapted for LED. If you want pure simplicity, something to clear up space by eleminating fuse box, headaches, etc. and fully ready for LED w/ modern features the moto gadget...

The '77-'78 sprockets are different. They are built with a spacer. This is evident when going to a wider rear tire.

You definitely want it centered. Otherwise you will not have a centered tire and it will track funny not to mention chain alignment.

You need to remove 1/4" from both sides. I laid my completely stripped stock swing arm on cardboard on the floor with the very back side against a stable straight edge. I then marked where the edges of the rear arm was on the card board. I then lined up my laser (I got it for $60 to align my...

Starting to look like a bike again. Still have a long way to go. The hunt for my tank is on...after Xmas of course.

Relaced and completely rebuilt the rear wheel to go with a 160 tire. Still kept the factory diameters on both tires. Added the inner fender and finished the tail light.

Hammered this thing out by hand. I later added a backing of SS mesh and a few small SS Alan bolts to keep it all together.

Stiffened and mildly modified the frame, all bearings (including swingarm) upgraded, new cruisetech tires, forks upgraded with performance springs and front lowered 2.5" (the 77-78 bikes have longer forks than the earlier models), longer rear shocks to keep stock ride height and stretched the...

Finished

The aftermath.

Stripping it all down to the frame. Rebuilding forks while I'm at it.

Gave it a quick power wash. I was surprised how nice it was.

How it looked when it was loaded up. 40 years worth of dirt.

The '79 is only 1.5" longer than a '78 750K swing arm (which is a direct bolt on) and does have to be trimmed 1/4" off each side of the frame pivot. After that you can use your stock bolt. As far as spacers, use the spacers from a '78 750K. The thicker one on the drive side. The '80+ is 2"...

I just did this with a straight edge, a square, a laser and markings on my floor. Removing 1/4" on each side is correct. However that is not a '79 swing arm. It is an '80+. The '79 has the same internal diameter for the mounting bolt and no frame modifications are needed. As a matter of fact...

What exactly do you have in mind?

DEEP into my build now. Let's go!

YouTube my friend. Classic Octane is good source. The rabbit hole will open from there

I have a 78 cb 750 and have been looking at lowering the front. I know the 77-78 sit about 2" higher than earlier models due to the upper triple tree and tube length. Question I have is can you all show me your front stance and measure top of top triple tree to bottom of fork? I'm trying to...

I have a 1978 750k barn find I am updating. I am going to a 1980 cb750c swing arm because its about 1.5" - 2" longer and looks completely factory. My rear wheel is a simple bolt on but some modification needs to be done to bolt up. The pivot is .5" too long which is and easy fix. The bearings...

I love my OTC. I have a 78 that looked just like yours except it was the darker purple.