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Unread 02-13-2018, 01:31 PM   #11
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Default Re: TXT electric series 48 volt conversion More Speed

Well guys finally pulled the trigger on the 6:1 gears and what a difference!!
Cart new top speed has hit 45mph multiple times. As far as what I call it, she runs a constant steady 43-44 mph and that’s at full charge and lately an ambient temp of around 40 deg F. I am expecting at least that maybe a lil better as ambient temps increase!
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Unread 02-13-2018, 01:32 PM   #12
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Default Re: TXT electric series 48 volt conversion More Speed

45 mph in a golf cart ... we will pray for you
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Unread 02-13-2018, 02:33 PM   #13
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Default Re: TXT electric series 48 volt conversion More Speed

Quote:
Originally Posted by Cartlifer View Post
Well guys finally pulled the trigger on the 6:1 gears and what a difference!!
Cart new top speed has hit 45mph multiple times. As far as what I call it, she runs a constant steady 43-44 mph and thatís at full charge and lately an ambient temp of around 40 deg F. I am expecting at least that maybe a lil better as ambient temps increase!
Wow! Be careful!

Sent from my SM-G930R4 using Tapatalk
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Unread 02-13-2018, 05:31 PM   #14
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Default Re: TXT electric series 48 volt conversion More Speed

Sorry was trying to post pic
And vid of the lil speed demon
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Unread 02-13-2018, 10:31 PM   #15
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Default Re: TXT electric series 48 volt conversion More Speed

Yep, 45mph carts are sketchy....and not for everyone. Even 35 on a lifted cart gets funny.
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Unread 02-14-2018, 07:44 AM   #16
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Default Re: TXT electric series 48 volt conversion More Speed

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Yep, 45mph carts are sketchy....and not for everyone. Even 35 on a lifted cart gets funny.
I'll go further out on the limb and say 'not for anyone'.
You got a cart designed for 14-19 mph going nearly 3 times the designed speed. The design is not adequate for these speeds. It will be unstable at best and forget stopping in a safe distance. And likely the tires are not rated for this speed either. A tire failure could be fatal as there is no crash protection.

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Unread 02-14-2018, 08:29 AM   #17
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Default Re: TXT electric series 48 volt conversion More Speed

Heíll be fine as long as a huge weighted sled doesnít crash into him
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Unread 03-25-2018, 11:53 PM   #18
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Default Re: TXT electric series 48 volt conversion More Speed

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Originally Posted by JohnnieB View Post
No offense taken, I'm glad you verified my numbers instead of taking them at face value.

For a 19.0" tire height I get 7263 RPM at 33 MPH and 7483 at 34 MPH, which I rounded up to 7300 and 7500. (BTW: I use 3.14159265358979 for pi)

Here is a good thread on gear swaps: D&D PDS High Speed Motor and 8:1 High Speed Gear Experiment...

Terry started with a PDS cart rather than a series drive, but the principles are the same except for motor type.
Terry and I traded gear sets back then, he got a 6 to 1 set and I got his used 8 to 1 set, my ezgo pds cart back then ran 52 mph. 600a Alltrax, 48v, pq red motor
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Unread 03-26-2018, 09:44 AM   #19
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Default Re: TXT electric series 48 volt conversion More Speed

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Originally Posted by Ryan T View Post
Terry and I traded gear sets back then, he got a 6 to 1 set and I got his used 8 to 1 set, my ezgo pds cart back then ran 52 mph. 600a Alltrax, 48v, pq red motor
I'm going to stick with 12.44:1 gears, 17" tall tires and a 6500RPM max, for 26 MPH.
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