107mph go kart on 28S/18P pack of Molicel P26A

Batteries, Chargers, and Battery Management Systems.
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garolittle   1 kW

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107mph go kart on 28S/18P pack of Molicel P26A

Post by garolittle » May 13 2022 11:23pm

107 mph electric gokart at the dragstrip….

https://www.facebook.com/24718481265088 ... 78783/?d=n

Components:

AC-9 motor from HPEVS
1238E controller (650A max)
28S/18P lithium ion battery pack consisting of Molicel P26A cells connected with .25mm pure copper bus bars (pack assembled by Vextrek in Augusta, GA)
Thunderstruck BMS and Charge Controller

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107 mph electric go kart

Post by garolittle » May 14 2022 5:47am

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Last edited by garolittle on May 15 2022 4:15pm, edited 1 time in total.

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Re: 107mph go kart on 28S/18P pack of Molicel P26A

Post by liveforphysics » May 14 2022 11:23pm

Possible to show a vid that is visible to non-facebookers?
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Re: 107mph go kart on 28S/18P pack of Molicel P26A

Post by garolittle » May 15 2022 3:49pm

liveforphysics wrote:
May 14 2022 11:23pm
Possible to show a vid that is visible to non-facebookers?
Yes sir. It’s actually good to know that not everyone is on Facebook. I need to do the same :-). Here’s the last few seconds of 105 mph run.

https://youtu.be/P5kUjMHM3Qs
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Re: 107mph go kart on 28S/18P pack of Molicel P26A

Post by garolittle » May 15 2022 4:45pm

Cells are connected with .25mm thick pure copper sheets.
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Re: 107mph go kart on 28S/18P pack of Molicel P26A

Post by liveforphysics » May 15 2022 6:07pm

Can you share the 60ft, 330ft, and 1/8th?
Each carcinogen vapor exposure includes a dice roll for cancer.

Each mutagen vapor exposure includes a dice roll for reproductive genetic defects in your children.

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Re: 107mph go kart on 28S/18P pack of Molicel P26A

Post by garolittle » May 15 2022 8:16pm

liveforphysics wrote:
May 15 2022 6:07pm
Can you share the 60ft, 330ft, and 1/8th?
Yes sir. Here you go. These times were not so good. Going to try a larger sprocket on the rear axle to improve the lower end acceleration. I am still accelerating at the 1/4 mark so I believe I can keep the same top speed and improve the lower end acceleration.
09E2A4F7-0A65-4205-8626-6F67C4D83BEC.jpeg
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Re: 107mph go kart on 28S/18P pack of Molicel P26A

Post by Hillhater » May 16 2022 9:41pm

Karts are an aerodynamic brick !...anything above 30mph pumps power into the wind.
You could reduce that time, and increase top speed if you just tilted the seat back to a “laydown” position.
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Re: 107mph go kart on 28S/18P pack of Molicel P26A

Post by garolittle » May 17 2022 12:32am

Hillhater wrote:
May 16 2022 9:41pm
You could reduce that time, and increase top speed if you just tilted the seat back to a “laydown” position.
Good point. Might try that. Thanks.

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Re: 107mph go kart on 28S/18P pack of Molicel P26A

Post by liveforphysics » May 17 2022 12:44am

Nice kart! I see a lot of ET to be dropped in shorter gearing my friend.
Each carcinogen vapor exposure includes a dice roll for cancer.

Each mutagen vapor exposure includes a dice roll for reproductive genetic defects in your children.

Each engine start sprays them into a shared atmosphere which includes beings not offered an opportunity to consent accepting these cancer experiences and defective genetics life experiences.

Every post is a free gift to the collective of minds composing the living bleeding edge of LEV development on our spaceship.

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Re: 107mph go kart on 28S/18P pack of Molicel P26A

Post by garolittle » May 17 2022 8:25am

liveforphysics wrote:
May 17 2022 12:44am
Nice kart! I see a lot of ET to be dropped in shorter gearing my friend.
I think you’re right. Will try again this Thursday and hopefully will lower the ET. In theory, I could get a slightly higher TopSpeed since I was no where close to the maximum RPMs with the other sprocket. Definitely will keep you guys posted. Thanks so much for all the great info on this forum

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Re: 107mph go kart on 28S/18P pack of Molicel P26A

Post by DogDipstick » May 17 2022 9:54am

Hahaha way to go Gary.
84v of Ironhorse XC.. :) :bolt: by Chevy :bolt: :D You call .. that.. a "glitch:" ? :twisted: (...No Mom. The formula is Kaw > 1(Hr) = Impounded. The math checks out. I'll be fine. ).. :? Broke20Horsies! 17,830w !! :x 1 (pound / second) Hp = 338.24 M^2 Kg^2 / Sec^4 ( :twisted: 1200v? :twisted: ) :| isn't 13" x 27".. Oh nvrmnd :roll: 4+25% = 5 ; 5-20% = 4... 5(1-20%) = 4.. so, to correct the incorrect reading, of 4 ... 4(1+25%) = 5 :confused: Fabricator @BSECo.

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Re: 107mph go kart on 28S/18P pack of Molicel P26A

Post by garolittle » May 17 2022 10:07am

DogDipstick wrote:
May 17 2022 9:54am
Hahaha way to go Gary.
:-). Going for 110 mph this week. This is the only crazy thing I do but it’s really crazy 😜

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Re: 107mph go kart on 28S/18P pack of Molicel P26A

Post by garolittle » May 18 2022 9:10am

Last week, we were allowed to race against some vintage and modern two cycles at the Lamar County Speedway in Barnesville, GA recently. Really great group of people. They did not have to let us race but seemed interested in the project so they let us run with them. Hopefully will get to run against some tagged court scenes. Ultimate goal is a 52 second lap time at the Atlanta Motorsports Park in Dawsonville Georgia. Extremely challenging track with a very talented group of drivers.

Here’s a brief video of the Barnesville race.

https://youtu.be/mvEb7VQAIZk

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Re: 107mph go kart on 28S/18P pack of Molicel P26A

Post by spinningmagnets » May 18 2022 9:33am

When it comes to aero improvements, the back half is as important as the obvious front half.

I'd look at the "aero civic" website where builders try to improve gas mileage. Take their optimum shape and squish it a bit flatter...

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Re: 107mph go kart on 28S/18P pack of Molicel P26A

Post by garolittle » May 18 2022 9:36am

spinningmagnets wrote:
May 18 2022 9:33am

I'd look at the "aero civic" website where builders try to improve gas mileage. Take their optimum shape and squish it a bit flatter...
Excellent idea. Really appreciate the suggestion. Will do.

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Re: 107mph go kart on 28S/18P pack of Molicel P26A

Post by Hillhater » May 18 2022 4:49pm

Here is an example of a “lay down” aero kart..
https://i.pinimg.com/originals/9b/d6/f3 ... a96655.jpg
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