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  #221  
Old 09-15-2019, 07:41 PM
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Default Systems Check

To connect the throttle cable to the thumb throttle, I simply drilled a hole, ran the cable thru it & used a "wire nut" as a "stop" to come in contact with &/or "trigger" it, as the cable travels

Seems to work quite nicely

Then, I did a quick check to make sure everything is functioning properly.

Made a video of the "check" too

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  #222  
Old 09-16-2019, 07:20 AM
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Default RPM test

I set 'er up on blocks
...attached the RPM meter
...& then, did some "lightly loaded" RPM tests.
(just the drag of the chain, sprocket, axle & wheels)

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  #223  
Old 09-16-2019, 07:48 AM
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If i ever find this for sale im putting a gas engine on. That is if you ever sell it
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  #224  
Old 09-16-2019, 08:26 AM
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Well I don't think he'll ever sell it to you if you're just going to stick a gas engine on!
Don't change a thing Kevin!
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  #225  
Old 09-16-2019, 08:45 AM
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Quote:
Originally Posted by Budget GoKart View Post
If i ever find this for sale im putting a gas engine on. That is if you ever sell it
Electric is the way to go....I don't think even the cheapest electric motor can compete with gas. Insta-torque through the whole RPM range! AND NO CLUTCH OR TORQUE CONVERTER!!

Hey FA, can you use one of these on your next project

https://www.walmart.com/ip/JEGS-3010...xoCncIQAvD_BwE
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  #226  
Old 09-16-2019, 11:28 AM
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I haven't done MPH tests yet

But, this thing flies

Here is some first ride footage & loaded RPM test data

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  #227  
Old 09-16-2019, 11:31 AM
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Quote:
Originally Posted by Tpdingo View Post
Electric is the way to go....I don't think even the cheapest electric motor can compete with gas. Insta-torque through the whole RPM range! AND NO CLUTCH OR TORQUE CONVERTER!!

Hey FA, can you use one of these on your next project

https://www.walmart.com/ip/JEGS-3010...xoCncIQAvD_BwE
That's a whole lot of motor
...like for a car, not a kart (well maybe Joe 405's kart )
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  #228  
Old 09-18-2019, 07:37 AM
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Well, the loaded RPM test wasn't very conclusive
...gonna have to do 'em again

The ride was really fun though

First, we gotta get the battery pack, charged back up

I bought a 60V 2.5A SLA battery charger, last fall (~$20.00)
https://www.ebay.com/itm/60V-20AH-Le....c100005.m1851
...but, it came with the 'dreaded" C-13 DC output plug

So, I cut 'er off
...double checked the "polarity"
…& soldered on an XT-60 plug

Then, I soldered the receptacle onto the charge wires, on the kart.

When she's charged back up, we'll get back to testin
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SAM_0999.jpg   SAM_0996.jpg  

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SAM_1008.jpg   SAM_1010.jpg  

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  #229  
Old 09-18-2019, 10:15 AM
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Just make sure you mark the polarity 🤣
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  #230  
Old 09-18-2019, 02:57 PM
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High speed in reverse!
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  #231  
Old 09-18-2019, 07:32 PM
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High speed in reverse!
No, just front wheel drive.
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  #232  
Old 09-18-2019, 07:54 PM
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While charging, I gave everything a quick "once over"
...Uum, Houston we have a problem

What's wrong with this pic?
...besides ugly welds
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  #233  
Old 09-18-2019, 08:08 PM
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Tie rods sticking out like a red sore thumb? No end caps on frame tubing?
You know we're too lazy and/or unintelligent to play guessing games, Kevin.
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  #234  
Old 09-18-2019, 08:23 PM
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Quote:
Originally Posted by JTSpeedDemon View Post
Tie rods sticking out like a red sore thumb? No end caps on frame tubing?
You know we're too lazy and/or unintelligent to play guessing games, Kevin.
Nope, none of those things warrant a "Houston we have a problem" designation
...gonna have ta look closer

Clue: a simple oversight, on my part
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  #235  
Old 09-18-2019, 11:25 PM
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forget to tight up king pin?
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  #236  
Old 09-19-2019, 05:16 AM
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Unpainted spindle brackets and the tie rods super close to the frame?
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  #237  
Old 09-19-2019, 06:05 AM
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Quote:
Originally Posted by karte_m0lim View Post
forget to tight up king pin?
BINGO!

Winner, winner chicken dinner

Yup, total oversight on my part


I've put several miles on 'er
& kinda surprised the nuts are even still there
...but, I got 'em tight now.
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  #238  
Old 09-19-2019, 06:14 AM
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Quote:
Originally Posted by Functional Artist View Post
BINGO!

Winner, winner chicken dinner

Yup, total oversight on my part


I've put several miles on 'er
& kinda surprised the nuts are even still there
...but, I got 'em tight now.
been there, done that
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  #239  
Old 09-24-2019, 08:08 AM
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Default Testin';

I've been doin' some testin'

RPM test results
Low gear 330 (axle speed) x 5.4 (gear ratio) = ~1,780 RPM avg.
Med gear 620 (AS) x 5.4 (GR) = ~3,240 RPM avg.
High gear 950 (AS) x 5.4 (GR) = ~5,130 RPM avg.

Speed Tests
Top speed in low gear seemed to be ~11 MPH
Top speed in med gear looked to be ~24MPH
Top speed in high gear was 35MPH

There is more info & videos on these RPM tests in this thread
http://www.diygokarts.com/vb/showthr...t=41655&page=2

Here is the speed test video
...but, had some issues toward the end

* Sorry, the GPS screen didn't seem to record too well

...even with a zip tie
…& I kinda blocked 1/2 of the "ride along" part with my shoulder

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  #240  
Old 09-24-2019, 08:37 AM
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Like I said somewhere else:
You need a GoPro!
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