CM400 Re-Re-rebuild.

[KZsAll]

Ok so thinking about the brake switch thing. What about a micro-switch next to your brake stop. That way you can use them same bracket, it would be easily concealed, and will make or break contact anytime the arm moves away from your stop. Just a thought. lol.

 

[divot02]

Hi there. You could always use the radio shack Mini-Momentary switchThere should be a way to adapt it to the rear. See pic. Good luck, Great build. Greg See Pic.

 

[coldfuzion76]

The problem is hiding a switch. I don't want it to be real obvious. But everything's so out in the open it probably really isn't possible, so I guess small will have to do. Haven't had a chance to run to Radio Shack yet, but that was going to be my next stop.

 

[TripleKing]

Honestly, the CX500 forks aren't really an upgrade if you already have straight forks. At least the 79 model forks I got have the exact same part numbers as my 80 CM, but stiffer springs. I had one that had a slight curve to it, and I got them because Progressive (brand name) makes a spring for them, and not for the CM400. But they're the same length and diameter, so there's no reason I know they won't fit. They're made for a little heavier bike, but the front could use a little stiffening anyway. That and I'm 6' 1" and 200 lbs, so I'm sure it won't hurt. Lol.

So then the CX500 springs should fit in my CB400T fork tubes, correct?

 

[coldfuzion76]

So then the CX500 springs should fit in my CB400T fork tubes, correct?

As near as I can figure, yeah. The fork tube part numbers are exactly the same. At least for the 1979 CX500 and the 1980 CM/CB 400. Here's the part numbers for the CX500 fork: http://www.servicehondapsn.com/fiche_section_detail.asp?section=2560967&category=Motorcycles&make=Honda&year=1979&fveh=132859

And here's a 1980 CB400: http://www.servicehondapsn.com/fiche_section_detail.asp?section=2560550&category=Motorcycles&make=Honda&year=1980&fveh=132852

About the only part number that's different is the spring itself. But the Progressive spring should fit just fine.

 

[coldfuzion76]

I've had kind of a slow weekend, but I did manage to finish the gearshift linkage, and I found a simple solution for my brake light switch.

I just made a little piece to sandwich in between the pieces of the rear sets to give me another point to put the spring on, and in the right direction to be able to mount my switch somewhat hidden. Have to extend my wires a bit and it'll be done.

 

[coldfuzion76]

Ok, so after all the research and thinking I was good with the CX500 fork brace, the first bump I hit my front forks bound up and wouldn't move. Took the center of the brace out, and it popped right back up again. It was a little tight going on, but I still had everything loose, so it must have bound everything up when it all got cinched down. I was able to grind it down, maybe 1mm each side, and enlarge the holes ever so slightly and it went right back on with no binding. I guess I could have sent it back and got the correct one, but this was quicker. Lol.
Other than that, I rode it a few miles before it rained on me this morning, and I'm really impressed. I changed too much all at one to pick what did the most benefit, but right now the bike is super stable, and I can lean a LOT more comfortably than before. The rear sets are really comfortable, though I should adjust them down maybe a little bit. Got a couple of glamour shots out in the driveway. Still need to extend and route the rear brake switch wires, get a shorter speedo cable, and move the speedo in a little. I broke my speedo cable because it was binding up the way I had it mounted. But overall a great first ride!





I'm really digging the look of the orange tank. Right now especially. It's an all original tank, complete with scrapes and a little rust. It really matches the worn look of the rest of the bike.

 

[Ppleasants]

Have any input on tuning the carbs with the pod filters and shorty mufflers? This is the setup I'm going for on my CB400T.

Awesome build by the way

 

[imovertheinternet]

Did you just cut your stock seat down and recover it or did you purchase it?