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first time ever a real post in this section, 42 mph dune bug

PostPosted:Sat Mar 15, 2014 11:09 am
by robnewyork
Image

second run we tried again , and found the weak link. 50mph is on the horizon, maybe in a week. im pretty happy with 42, over 400 percent the manufacturers top speed. At the rate the kart is pulling amps to do this the silly 12ah batteries give us a small window of opputunity.. the next setup will allow for better acceleration and numerous attempts, although i think we will need just 1 :)

https://www.youtube.com/watch?v=w3Ez8Dz ... e=youtu.be

if you dont think it was 42, we have another video that was a different angle on 2nd attempt today.,he was carrying 2 gps devices, not much more we can do.

Re: first time ever a real post in this section, 42 mph dune

PostPosted:Sat Mar 15, 2014 2:30 pm
by maurtis
Fantastic! You went so fast it broke the phone! :D

Was the weak link the batteries? Were they just sagging too much under load? I notice our 12v 15ah SLAs sag like a mofo at WOT.

Re: first time ever a real post in this section, 42 mph dune

PostPosted:Sat Mar 15, 2014 3:40 pm
by robnewyork
lmao, yes the g's broke the phone , and yes the amp load just kills the batteries and on run 2 we had no power at all past 39, no pull at all , im gonna rig 21 ah parallell series for next test, should do 45 plus i hope.. we will have better acceleration and not need as much runway as the kart under full throttle geared for 69 stalls when pegged until you hit 15-20.. Basically he will be able to really give it the beans out of the corner and not have to be at a specific speed .50 will be tough either way, but entirely possible for 1 or 2 runs.he didnt hear me yell go as that says something lol.

Re: first time ever a real post in this section, 42 mph dune

PostPosted:Sat Mar 15, 2014 3:42 pm
by robnewyork
also, if i had 4 35ah batteries sitting around this would be a reliable daily driver 50 plus mph driver, but im not spending another 240 on this specific project as i need to carry it on occasion and adding 100 lbs would kill me,

Re: first time ever a real post in this section, 42 mph dune

PostPosted:Sun Mar 23, 2014 1:16 pm
by robnewyork
42 will remain tops , the 21ah batteries set up made this thing an absolute beast, hit the throttle at 20 and it pegged u to the seat , sadly the steering was just too scary for anyone to really go for 50 , but the kart could do it easily.on a better platform the yk43b combined with an industrial motor can get you highway speeds, just dont try it on the razor dune buggy , video later.

Re: first time ever a real post in this section, 42 mph dune

PostPosted:Sun Mar 23, 2014 4:39 pm
by gameboy
robnewyork wrote:the yk43b combined with an industrial motor can get you highway speeds, just dont try it on the razor dune buggy , video later.


Oh goodness. Too funny. Can't wait for the video.

Re: first time ever a real post in this section, 42 mph dune

PostPosted:Mon Mar 24, 2014 2:26 am
by robnewyork
the utube video is uptop from last week.

Re: first time ever a real post in this section, 42 mph dune

PostPosted:Mon Mar 24, 2014 5:19 am
by robnewyork

Re: first time ever a real post in this section, 42 mph dune

PostPosted:Mon Mar 24, 2014 5:14 pm
by robnewyork

Re: first time ever a real post in this section, 42 mph dune

PostPosted:Wed Jul 15, 2015 9:45 am
by SunnieBell
well lot of congra8s. that's what i call success.

Re: first time ever a real post in this section, 42 mph dune

PostPosted:Thu Jul 16, 2015 11:09 am
by robnewyork
thanks man, it had more buddy backed off said it was scary unstable

Re: first time ever a real post in this section, 42 mph dune

PostPosted:Wed Feb 24, 2016 6:26 pm
by synx
Beast! Is this w/ that Leeson?

Re: first time ever a real post in this section, 42 mph dune bug

PostPosted:Tue Apr 05, 2016 11:20 am
by robnewyork
12 v leeson run at 48v with internal fan and yk43b and 17-55 gears