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Author Topic: 1991 cb750 nighthawk brat  (Read 1961 times)

Offline harley497

  • Posts: 10
1991 cb750 nighthawk brat
« on: Jul 11, 2016, 06:50:47 »
Hey guys

Here you go 1991 nighthawk build. Iím looking forward simple clean looking brat style and the build is rather exercise for myself to try and gain some experience in engine top end, carb settings, frame modifications.. Bought the bike about 6 month ago. Never meant as a quick journey, I also got family and job to follow-up..)

Couple original pics. Imported from japan in 2013 (fun thing it have no VIN at all) and stayed in garage for most of the time since that time:



Did a few test rides in garage before disassembly. (russian license plates size is a bad joke)) Engine was running very good, brakes fine, just wash it and ride)



But disassembly was inevitable, here you go funny timelapse:



sht, this ended up as a huge post and I feel exhausted now) as you might noticed from the video, seat area of stock frame is a horrible mess. and itís been quite some progress on frame recently, will come back soon with more pics..


« Last Edit: Dec 29, 2016, 15:49:56 by harley497 »

Offline harley497

  • Posts: 10
Re: 1991 cb750 nighthawk brat
« Reply #1 on: Jul 11, 2016, 12:29:37 »
Yeah so anyone who would try to build something from 199x cb750, beware of pretty messy tubing

swings up in the middle of seat


looking upside down is a pain


Just had to cut all that


And then using dime city's frame loop set, put it on top. Managed to keep stock upper shock mounts and very glad about that.


Tank is some '79 cb750


I considered few options on seat/rear solution, and somehow liking/moving towards upsweft seat, no cafe cowl..






Cheers!

Offline harley497

  • Posts: 10
Re: 1991 cb750 nighthawk brat
« Reply #2 on: Aug 26, 2016, 17:37:23 »
Bulid's going on.

Aluminium parts cleaned and polished


Engine getting almost done after top end overhaul with clean covers on


Wheels painted and assembled


New tank mounts in progress




Bike wont make it for 2016 gentleman's ride.. But next year for sure, winter is long..

Offline harley497

  • Posts: 10
Re: 1991 cb750 nighthawk brat
« Reply #3 on: Dec 29, 2016, 15:46:31 »
Some progress with tank, halfway done. About to throw some stripes in stock paint style and some more stuff.



Aluminum electric tray in progress and lipo battery found its place in swingarm:







Offline cxman

  • DTT SUPPORTER
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  • Posts: 2317
Re: 1991 cb750 nighthawk brat
« Reply #4 on: Dec 29, 2016, 19:10:57 »
nice work on the bike

i am doing one the same year  i really like ytour module/ wiring layout

i have a bit deeper tray under the seat and my battery is there as well

i just installed a hydraulic clutch in mine i hope to do the tear down for powder and paint this week

right now its pretty raw


1978 CX650 Super Deluxe
1979 XS1100 Special
1980 XS650
1980 cx500  The Beast
1983 GL650 i
1983 cx650 Custom
1973 CB450
1973 cb750
1980 cb750
1981 cb650
1982 cb900 c
1977  gl1000
1976 gl1000 LTD
 1983 GL1100 Nekid
and a bunch of others

Offline Weasel

  • Posts: 170
  • 3rd generation rider
Re: 1991 cb750 nighthawk brat
« Reply #5 on: Dec 30, 2016, 10:10:58 »
Very creative vision on a bike that's overlooked. Nice work. Looking forward to seeing the completed motorcycle.

Offline harley497

  • Posts: 10
Re: 1991 cb750 nighthawk brat
« Reply #6 on: Jan 22, 2017, 16:45:51 »
Guys who did tank repaint, they mostly do bobbers with all that gold leafing and flaking stuff.. So it went totally other direction with me comparing to what I originally thought and ended up pretty wild. Still somehow looks good) Anyway repainting is the easiest part, now about to assemble this alltogether..



In fact '79 tank fits 1991 frame very bad, due to backbone raising high. So tank is too high and too far from neck and with petcock hitting carbs. Its fotoshopped desired placement here.. Will figure out actual fitment on next garage session..

« Last Edit: Jan 22, 2017, 16:48:52 by harley497 »

Offline cxman

  • DTT SUPPORTER
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  • Posts: 2317
Re: 1991 cb750 nighthawk brat
« Reply #7 on: Jan 22, 2017, 16:58:16 »
i used a 78 tank and had some of the same issues but i am getting there a few more days and i will tear it all down to make it pretty

1978 CX650 Super Deluxe
1979 XS1100 Special
1980 XS650
1980 cx500  The Beast
1983 GL650 i
1983 cx650 Custom
1973 CB450
1973 cb750
1980 cb750
1981 cb650
1982 cb900 c
1977  gl1000
1976 gl1000 LTD
 1983 GL1100 Nekid
and a bunch of others

Offline doc_rot

  • DTT BOTM WINNER
  • *
  • DTT SUPPORTER
  • *
  • Posts: 804
  • Oh the usual... I bowl, I drive around...
Re: 1991 cb750 nighthawk brat
« Reply #8 on: Jan 22, 2017, 18:13:57 »
The paint looks great. hope you get the fitment sorted out.
---------------------------------
'78 KZ1000  Project

'80 KZ750 Twin Project

Offline harley497

  • Posts: 10
Re: 1991 cb750 nighthawk brat
« Reply #9 on: Feb 05, 2017, 15:20:40 »
Ok so electrics (version 1 at least) seems pretty much done now



With starter relay found its place under seat



And some connections towards handlebar hidden under the tank.. And new tacho looking awsome..



With seat pan, looks clean and nice..





And tank finally sits properly in place





Feels excited on how nice it all comes together so far.. Front end is next for assembly, let's see..