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Author Topic: 1980 CB900F Build  (Read 2959 times)

Offline cxman

  • DTT SUPPORTER
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  • Posts: 2463
Re: 1980 CB900F Build
« Reply #40 on: Jan 19, 2018, 07:01:11 »
the wire bundle also carries the oil pressure switch wire and the neutral switch

oil

neutral

ground

3 stator

2 rotor trigger wires if i recall correctly
1978 CX650 Super Deluxe
1979 XS1100 Special
1974 xl350
1983 cx650 Custom
1973 cb750
1980 cb750
1981 cb650
1982 cb900 c
1974 kawasaki 350 bighorn
1983 GL1100 aspy full dress
1983 GL1100 Nekid
and a bunch of others

Offline crazypj

  • Posts: 12892
  • Split personality, I fake being smart
Re: 1980 CB900F Build
« Reply #41 on: Jan 19, 2018, 12:22:07 »
ohhhhh, that makes sense now. I'm still not gonna try it. My Brother lives a couple hours away in a bigger city and the motorcycle shop there had a rr in stock for $80. I'm going to his place next weekend because us Aussies celebrate "invasion day" next Friday. So when I get back if thats plugged in and things still aren't working I will look in to more drastic measures.
It was 40 degrees hear again today and its going to be hotter over the weekend. So I will be avoiding the garage for a bit.
Where is South Wales? Florida somewhere?
You might be from Oz but I know your not that thick.  ;D
The rugby country.
 I'm still a British 'subject'. American's seem to like the 'south' Welsh, (Anthony Hopkins, Richard Burton, Katherine Zeta Jones/Douglas , etc - and Me  8) except I'm broke)
'you can take my word for it or argue until you find out I'm right'
Best thing I ever overheard
"yep, PJ's my boss, he taught me everything I know, just didn't teach me everything he knows"
Brian Morgan, 1982

CB360's,  http://www.dotheton.com/forum/index.php?topic=11736.0
XS650,  http://www.dotheton.com/forum/index.php?topic=11922.0

Re: 1980 CB900F Build
« Reply #42 on: Jan 23, 2018, 17:46:59 »
Quick update: Mirrors arrived. I will have to grind off some rubber to fit them in the bars but im not putting them on until its time for rego because im likely to damage them while working on the bike. My brother picked up a second hand rr but its still at his place and I don't think I will make it over there so he will have to post it. Also the brake caliper rebuild parts should get in tomorrow.
A knight in shining armour is a man who has never had his metal truly tested.

Re: 1980 CB900F Build
« Reply #43 on: Jan 25, 2018, 04:55:56 »
I got brakes! I picked up my parts from the shop today and spent ages trying to bleed the front, turns out one of the bleeders was blocked with some gunk that I didn't clean out and with the help of a mates vacuum bleeder kit I got it done in no time. Now its all connected I'm looking at the nice braided lines I've bought to replace the factory rubber and because I've got clip-ons which are lower then the original bars the new hoses are a little bit too long. I'm thinking of taking them to a hose shop and asking them to cut them a bit shorter.
I haven't bled the rear and tested it because I am going to buy a new reservoir .
Also I put the throttle cables back on and they will need to be shortened a fair amount too, I'm pretty keen to have a crack at that myself. To get the throttle return cable to screw into the handle bar housing I had to drill a hole through a bolt and cut a slit into the length of it to replicate the original part that is missing, its not the prettiest but I will replace it down the track when I get other priority stuff done first.
A knight in shining armour is a man who has never had his metal truly tested.

Re: 1980 CB900F Build
« Reply #44 on: Jan 25, 2018, 05:35:47 »
pics
A knight in shining armour is a man who has never had his metal truly tested.

Offline crazypj

  • Posts: 12892
  • Split personality, I fake being smart
Re: 1980 CB900F Build
« Reply #45 on: Jan 25, 2018, 09:48:15 »
File the bolt head to round, make sure to stick some grease  in the rubber boot o bolt will rust (unless you used stainless?) I probably have a couple of the correct fittings but as we know, shipping is killer to Oz
 If you pull top yoke it may be possible to change angles by loosening banjo bolts and routing so 'long' lines can fit better without excessive bends. That way you shouldn't av to re-bleed system or mess with getting lines cut. You will need to get some brass nipples to shorten throttle cables. Inners may be stainless steel which is a PITA to work with unless you can find some hard solder. In my experience, brazing makes the inner wire brittle and it's likely to break, 'soft solder' is just too soft and cable pulls through nipple. It's easier to use cheap zinc plated bicycle inner wire as solder sticks to it real easy. Keep it oiled and it lasts as long as anything else out there (about 15 yrs / 17,000 miles so far on my XS650)
 With the mirrors, junk the bar end mount as it will fall out.  Go to 'local' Home Depot / B&Q / etc and get some 6mm Rawlbolts (I think you get the same stuff we had in Britain?) You can tighten them enough to distort alloy bars from the inside  ;)

Be VERY careful tightening clamp screw, easy to crack the cast alloy.
« Last Edit: Jan 25, 2018, 09:52:47 by crazypj »
'you can take my word for it or argue until you find out I'm right'
Best thing I ever overheard
"yep, PJ's my boss, he taught me everything I know, just didn't teach me everything he knows"
Brian Morgan, 1982

CB360's,  http://www.dotheton.com/forum/index.php?topic=11736.0
XS650,  http://www.dotheton.com/forum/index.php?topic=11922.0

Re: 1980 CB900F Build
« Reply #46 on: Jan 29, 2018, 02:00:01 »
The new R/R arrived and so did my 3rd Chinese tail light. The bike charges now! I will try to finish up the wiring tonight but this heat is oppresive!
A knight in shining armour is a man who has never had his metal truly tested.

Re: 1980 CB900F Build
« Reply #47 on: Jan 30, 2018, 17:11:24 »
stayed up really late wiring in the new tail light and thought i'd solved it turning off when I go to high beam by wiring it both the Hi and Low out put sides of the M-unit. I didn't really think that through did I?

Who else can see the obvious problem with doing it that way?
A knight in shining armour is a man who has never had his metal truly tested.

Offline crazypj

  • Posts: 12892
  • Split personality, I fake being smart
Re: 1980 CB900F Build
« Reply #48 on: Jan 31, 2018, 11:13:21 »
You wire tail light to what was originally 'Brown' wire on Honda diagram (everything that needs 12V outside of coils, headlights, etc)
Tail light should be on same circuit as instrument lights
Did you 'blow' taillight when it tried to feed 5 amps back to headlight?
'you can take my word for it or argue until you find out I'm right'
Best thing I ever overheard
"yep, PJ's my boss, he taught me everything I know, just didn't teach me everything he knows"
Brian Morgan, 1982

CB360's,  http://www.dotheton.com/forum/index.php?topic=11736.0
XS650,  http://www.dotheton.com/forum/index.php?topic=11922.0

Re: 1980 CB900F Build
« Reply #49 on: Jan 31, 2018, 16:53:48 »
I was surprised I didn't burn it out,  but no what I effectively did was join Hi and Low beam together so they are both always on regardless of the switch position.
I will rewire the tail light so its on the ignition circuit, I just really wanted the option of being able to turn all the lights off with the engine still running (stealth mode)
A knight in shining armour is a man who has never had his metal truly tested.