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Author Topic: 1971 Kawasaki G3SS  (Read 25215 times)

Offline Walms

  • Posts: 399
1971 Kawasaki G3SS
« on: Dec 30, 2012, 02:38:34 »
This bike will be my daughter's first street bike...
Timid little suckers with a stock HP rating of 10.5...
The good part is this little rotary valve 2 stroke can be modified to make double that HP...  :D She weighs in at 174lbs and I'd like to get it down to 160...

Basically hide all the electrics and oil tank in the tail, upgrade the front brake to disc., build the motor and pipe.



I got started on the motor over the holiday's by shopping on eBay...
The stock cast iron 3 port 90cc cylinder was upgraded to a G4TR 5 port cylinder. At the same time, I bought some cases from a 1993 KE100, mainly to save some port work time to adapt the different cylinders...



This is the bike that inspired me on this project... Not mine or anyone I know, I just found the image on the web.  I photoshopped my first go for the pipe layout.





With any luck, I'll have it ready for the start of riding season in May... Maybe wishful thinking though!!



Offline haplo_84

  • Posts: 488
Re: 1971 Kawasaki G3SS
« Reply #1 on: Dec 30, 2012, 11:27:27 »
I can't remember the guys name, but your inspiration was built by someone on this forum.
A motorcycle functions entirely in accordance with the laws of reason, and a study of the art of motorcycle maintenance is really a miniature study of the art of rationality itself.  ~Robert M. Pirsig, Zen and the Art of Motorcycle Maintenance

Offline Walms

  • Posts: 399
Re: 1971 Kawasaki G3SS
« Reply #2 on: Dec 30, 2012, 11:43:59 »
Excellent news!  8)

Offline haplo_84

  • Posts: 488
Re: 1971 Kawasaki G3SS
« Reply #3 on: Dec 30, 2012, 12:08:11 »
Here you go, the guys name was Mitey F, I haven't seen any posts from him in a while but he may just be lurking rather than talking.

build
http://www.dotheton.com/forum/index.php?topic=20174.msg207753#msg207753

show and shine
http://www.dotheton.com/forum/index.php?topic=24939.msg267291#msg267291
A motorcycle functions entirely in accordance with the laws of reason, and a study of the art of motorcycle maintenance is really a miniature study of the art of rationality itself.  ~Robert M. Pirsig, Zen and the Art of Motorcycle Maintenance

Offline Walms

  • Posts: 399
Re: 1971 Kawasaki G3SS
« Reply #4 on: Dec 30, 2012, 12:50:12 »
I appreciate the links, a sweet bike for sure!!! Maybe he needs a pipe for it?  :D

Offline reds

  • Posts: 319
  • Build bikes to ride, not to look at!
Re: 1971 Kawasaki G3SS
« Reply #5 on: Jan 01, 2013, 04:01:15 »
How are you Walms? Wondering how that bike would look with a mid pipe like a scrambler. It's too bad the air intake is where it is or you could have the pipe come round from one side and go thru between the frame and cylinders to the other then up a bit then straight back just below and parallel to the seat frame rail. Challenge your pipe design skills ;)

Offline Walms

  • Posts: 399
Re: 1971 Kawasaki G3SS
« Reply #6 on: Jan 01, 2013, 10:18:15 »
Hey Reds, happy new year! I doubt I'll be using the stock filter location. I doubt the carb will fit under the cover. I'll just have a UNI hanging out the side. :)
Being a 1 lunger, I'll have at least 3 pipes for it! 
You can bet that I'll take advise on the cross thru. ;)

Offline hunter31415

  • Posts: 18
Re: 1971 Kawasaki G3SS
« Reply #7 on: Jan 01, 2013, 11:02:35 »
Awesome. I have a 73 sitting in my shop that's next on the chopping block as soon as I finish my Sr500. Picked it up for a song and been riding it around the parking lot after reworking the carb. the stock 10hp is modest but still makes it move along pretty nice even with my 200 pound self on it.

Offline VonYinzer

  • DTT SUPPORTER
  • *
  • Posts: 18384
Re: 1971 Kawasaki G3SS
« Reply #8 on: Jan 01, 2013, 14:06:06 »
Very cool. You're daughter is a lucky kid!
Like a river that don't know where it's flowin'
I took a wrong turn and just kept goin'

Offline Walms

  • Posts: 399
Re: 1971 Kawasaki G3SS
« Reply #9 on: Jan 09, 2013, 09:06:47 »
Well things are starting to move forward... Slowly  :)
I decided to model this bike as I did my last build. I like the idea for performing FEA plus working out the geometry and of course knowing what seat/ tail will look the best.



My current thinking is to go with this airtech tail but nothing set in stone