Go Back   DIY Go Kart Forum > Building Plans And Advice > Photo Gallery & Project Log

Notices

Closed Thread
 
Thread Tools Display Modes
  #1  
Old 07-02-2014, 01:25 AM
karte_m0lim's Avatar
karte_m0lim karte_m0lim is offline
Senior Member
 
Join Date: Jul 2014
Location: dubrovnik, croatia
Posts: 480
Thanks: 60
Thanked 131 Times in 103 Posts
Default gokart Fxr 180

Hi ...

year ago I started my project but do not have much time so ..

I got 5'' wheels, 180 ccm scooter engine (2 stroke) from gillera runner 180 fxr ...

instead of rear wheel I put sprocket and then use conventional transmition via chain.
gear ratio is 40/27 and top speed should be 80 km/h ...

start:




brakes:



sprocketss before :



and after:








pedals:




as original exhaust could not fit, I changed pipe a little bit and probable lost some power...



radiator is from ford tranzit cabin heater :



how should everything fit:



after complete disassembly and checking welds, sanding old paint , primer paint is there:



and after black:



plan is to paint main tubes in orange and put evrything back.
  #2  
Old 07-02-2014, 06:02 PM
OzFab's Avatar
OzFab OzFab is offline
Senior Member
 
Join Date: Nov 2011
Location: Warwick Qld, Australia
Posts: 15,619
Thanks: 1,135
Thanked 3,399 Times in 2,676 Posts
Default

This is some great work; I like what you did with the sprockets & great idea using a heater core as a radiator

Welcome to the forum
__________________
2013 Build-off Winner - http://www.diygokarts.com/vb/showthread.php?t=21076
The Following User Says Thank You to OzFab For This Useful Post:
karte_m0lim (07-03-2014)
  #3  
Old 07-03-2014, 12:45 AM
landuse's Avatar
landuse landuse is offline
Moderator
 
Join Date: Nov 2010
Location: Pietermaritzburg, South Africa
Posts: 17,305
Thanks: 2,097
Thanked 3,438 Times in 2,803 Posts
Default

I agree. Great work. It must have taken some time working on those sprockets
The Following User Says Thank You to landuse For This Useful Post:
karte_m0lim (07-03-2014)
  #4  
Old 07-03-2014, 12:58 AM
karte_m0lim's Avatar
karte_m0lim karte_m0lim is offline
Senior Member
 
Join Date: Jul 2014
Location: dubrovnik, croatia
Posts: 480
Thanks: 60
Thanked 131 Times in 103 Posts
Default

oooouuu yeah .. more than 300 holes on big one ...

start with 4 mm , then 6.5 , 8 ...

thanks for positive comments ..
  #5  
Old 07-07-2014, 12:28 AM
karte_m0lim's Avatar
karte_m0lim karte_m0lim is offline
Senior Member
 
Join Date: Jul 2014
Location: dubrovnik, croatia
Posts: 480
Thanks: 60
Thanked 131 Times in 103 Posts
Default






























...
__________________
YouTube: https://www.youtube.com/user/kartem0lim/videos?
  #6  
Old 07-07-2014, 12:39 AM
landuse's Avatar
landuse landuse is offline
Moderator
 
Join Date: Nov 2010
Location: Pietermaritzburg, South Africa
Posts: 17,305
Thanks: 2,097
Thanked 3,438 Times in 2,803 Posts
Default

That is looking great!! I love the 2 tone colour scheme.
  #7  
Old 07-07-2014, 02:05 AM
karte_m0lim's Avatar
karte_m0lim karte_m0lim is offline
Senior Member
 
Join Date: Jul 2014
Location: dubrovnik, croatia
Posts: 480
Thanks: 60
Thanked 131 Times in 103 Posts
Default

thanks .. didn't turn out as I expected .. orange just didn't glued on black so have to fix it with brush cause I got no patience to sand it down and respray ..
__________________
YouTube: https://www.youtube.com/user/kartem0lim/videos?
  #8  
Old 07-07-2014, 10:04 AM
firemanjim's Avatar
firemanjim firemanjim is offline
Just kartin' around....
 
Join Date: Jul 2013
Location: Houston Texas
Posts: 5,191
Thanks: 1,056
Thanked 1,385 Times in 1,097 Posts
Default

Quote:
Originally Posted by karte_m0lim View Post
thanks .. didn't turn out as I expected .. orange just didn't glued on black so have to fix it with brush cause I got no patience to sand it down and respray ..
I know THAT feeling.....
Good job! But, the sprockets..... Man, that arrangements looks off a little, meaning you will be going super fast on top end, but take forever to get there. Unless I'm missing something......
Slap on the wheels and post a video of it running. I bet it's quite a bit of fun to ride and I'm sure your friends are jealous.....
__________________
(@@)@@(@@)@@-@@@@@@ (@@)@@-@@@@@@-@@@
The Following User Says Thank You to firemanjim For This Useful Post:
karte_m0lim (07-07-2014)
  #9  
Old 07-07-2014, 12:34 PM
karte_m0lim's Avatar
karte_m0lim karte_m0lim is offline
Senior Member
 
Join Date: Jul 2014
Location: dubrovnik, croatia
Posts: 480
Thanks: 60
Thanked 131 Times in 103 Posts
Default

of course I could be wrong but hope not

in morning I will put some calculations here, now have to put children in the bed :p

this engine has TC inside and 13'' wheels and goes 130 km/h.

if I put 5'' wheel , it will go only 30-40 km/h so have to add some revs on axle
__________________
YouTube: https://www.youtube.com/user/kartem0lim/videos?
  #10  
Old 07-07-2014, 01:58 PM
firemanjim's Avatar
firemanjim firemanjim is offline
Just kartin' around....
 
Join Date: Jul 2013
Location: Houston Texas
Posts: 5,191
Thanks: 1,056
Thanked 1,385 Times in 1,097 Posts
Default

Don't worry about calculations..... Just run it..... I think you are correct.... It HAD a 13" tire, now your going to a 5".... Uhh, get race slicks in a 13" height on 5 or 6" wheels.....
I like this build more n more..... Ready to see it running and what kind of pep it has......
__________________
(@@)@@(@@)@@-@@@@@@ (@@)@@-@@@@@@-@@@

Last edited by firemanjim; 07-07-2014 at 10:47 PM. Reason: Dam auto correct
The Following User Says Thank You to firemanjim For This Useful Post:
karte_m0lim (07-08-2014)
  #11  
Old 07-07-2014, 08:53 PM
OzFab's Avatar
OzFab OzFab is offline
Senior Member
 
Join Date: Nov 2011
Location: Warwick Qld, Australia
Posts: 15,619
Thanks: 1,135
Thanked 3,399 Times in 2,676 Posts
Default

Looking good...

I too wanna see this thing running...
__________________
2013 Build-off Winner - http://www.diygokarts.com/vb/showthread.php?t=21076
The Following User Says Thank You to OzFab For This Useful Post:
karte_m0lim (07-08-2014)
  #12  
Old 07-08-2014, 12:55 AM
karte_m0lim's Avatar
karte_m0lim karte_m0lim is offline
Senior Member
 
Join Date: Jul 2014
Location: dubrovnik, croatia
Posts: 480
Thanks: 60
Thanked 131 Times in 103 Posts
Default

ok, new calculations ... on some sites I found that top speed of this bike is 108 or 130 km/h ..

tyre used is 130/60-13''.

so diameter is 13'' + 12 cm which is 45,02 cm or 0.4502 m

circumference is Diameter * PI => 0,4502 * 3,141 = 1,413 m

top speed 108 km/h = 30 m/s

rev on axle = 30/1,413 = 21,77 (1/sec) = 1276 rpm

sprockets on engine side is 40 and on gokart axle is 28 tooth, ratio is 1.428

so gokart axle will do max 1276 rpm * 1,428 = 1822 rpm => 30 (1/sec)

gokart wheel is 5'' and whole tyre is 10" or 25.4 cm or 0,254 m in diameter

circumference is 0,254* 3,14 = 0.797 m

top speed sholud be 0,797 m * 30 (1/sec) = 24 m/s or 87 Km/h

if bike top speed is 130 km/h then kart will go 101 km/h ...

if that is case, then I sholul check welds again ...
__________________
YouTube: https://www.youtube.com/user/kartem0lim/videos?
  #13  
Old 07-08-2014, 01:03 AM
karte_m0lim's Avatar
karte_m0lim karte_m0lim is offline
Senior Member
 
Join Date: Jul 2014
Location: dubrovnik, croatia
Posts: 480
Thanks: 60
Thanked 131 Times in 103 Posts
Default

there is some updates,

chain is up:








radiator:




brakes with wire:




as motor starter was on left side gotta change it and put it on right side :




kart with tyres on (toe and camber are not seted up yet):










new tyres waiting to be burned:

__________________
YouTube: https://www.youtube.com/user/kartem0lim/videos?
  #14  
Old 07-08-2014, 01:21 AM
karte_m0lim's Avatar
karte_m0lim karte_m0lim is offline
Senior Member
 
Join Date: Jul 2014
Location: dubrovnik, croatia
Posts: 480
Thanks: 60
Thanked 131 Times in 103 Posts
Default

well, here are some old videos , back in 2010 when I bought second hand gokart..

same engine was on, but chassis was horrible, cuted and welded so many times. ..

also, there was no exhaust, just pipe and finally i got crashed and twisted chassis beyond repair...

took two years to start build new one...

videos are poor quality, specialy this from down hill run without engine ...

downhill:


my test driver:


__________________
YouTube: https://www.youtube.com/user/kartem0lim/videos?
  #15  
Old 07-08-2014, 06:05 AM
zbuck zbuck is offline
Senior Member
 
Join Date: Jul 2010
Location: Ft. Wayne, IN
Posts: 782
Thanks: 69
Thanked 170 Times in 143 Posts
Smile

Nice job. But I am not big fan of having the gas tank above my head. If it were me, I would put it under the steering tower and add a fuel pump.
The Following User Says Thank You to zbuck For This Useful Post:
karte_m0lim (07-08-2014)
  #16  
Old 07-08-2014, 06:22 AM
karte_m0lim's Avatar
karte_m0lim karte_m0lim is offline
Senior Member
 
Join Date: Jul 2014
Location: dubrovnik, croatia
Posts: 480
Thanks: 60
Thanked 131 Times in 103 Posts
Default

well, I like my balls more than head :p

trying to keep simple, but good sugestion
__________________
YouTube: https://www.youtube.com/user/kartem0lim/videos?
  #17  
Old 07-08-2014, 06:43 AM
firemanjim's Avatar
firemanjim firemanjim is offline
Just kartin' around....
 
Join Date: Jul 2013
Location: Houston Texas
Posts: 5,191
Thanks: 1,056
Thanked 1,385 Times in 1,097 Posts
Default

lol I almost spit out my tea when I read that.......
__________________
(@@)@@(@@)@@-@@@@@@ (@@)@@-@@@@@@-@@@
  #18  
Old 07-08-2014, 06:52 AM
karte_m0lim's Avatar
karte_m0lim karte_m0lim is offline
Senior Member
 
Join Date: Jul 2014
Location: dubrovnik, croatia
Posts: 480
Thanks: 60
Thanked 131 Times in 103 Posts
Default

:p
If I put pump, do I need another pipe for returnig unused fuel or different carb?
__________________
YouTube: https://www.youtube.com/user/kartem0lim/videos?
  #19  
Old 07-08-2014, 07:00 AM
firemanjim's Avatar
firemanjim firemanjim is offline
Just kartin' around....
 
Join Date: Jul 2013
Location: Houston Texas
Posts: 5,191
Thanks: 1,056
Thanked 1,385 Times in 1,097 Posts
Default

No return line needed. You only have the fuel line with a pulse pump in the middle somewhere . That has a line for a pulse (suction) from a vacuum source on the engine, like the manifold. It only pumps what you need.....
__________________
(@@)@@(@@)@@-@@@@@@ (@@)@@-@@@@@@-@@@
  #20  
Old 07-08-2014, 07:14 AM
karte_m0lim's Avatar
karte_m0lim karte_m0lim is offline
Senior Member
 
Join Date: Jul 2014
Location: dubrovnik, croatia
Posts: 480
Thanks: 60
Thanked 131 Times in 103 Posts
Default

Planed to put choke and kill switch between legs...

But definitly give me something thinking...
__________________
YouTube: https://www.youtube.com/user/kartem0lim/videos?
Closed Thread

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 12:20 AM.