Go Kart Update
- Thread starter Upperfoot
- Start date
frodus
10 kW
Looks great dude!
And this is my plan for the Battery Box Mount that will be supporting 36KG of weight while moving pretty quickly in this thing!
Red = 60mm x 30mm Stainless Steel Rectangular Tube
Blue = X30 Kart Battery Clamps with M6 bolts - https://i.ebayimg.com/images/g/mQsAAOSw9GVbyzzv/s-l300.jpg
Green = M8 threaded bar x 2, one above the other for additional structural support, on the left it will sit behind the seat support to prevent the clamps from rotating.
Grey = 1.5mm Stainless Steel Plate
Here is the tube situated
To get an idea of how I'm going to do the stainless plate (need to trim the corners on the right hand side of the steel plate, getting close to those tyres!)
Using angle brackets to support the box itself
Been battling with this for a while and this is what I decided on, don't have many mounting points considering the room, and tried to distribute some of the weight across the frame with the tube closest to the front sitting across the frame, I'll keep you updated on how it goes!
Red = 60mm x 30mm Stainless Steel Rectangular Tube
Blue = X30 Kart Battery Clamps with M6 bolts - https://i.ebayimg.com/images/g/mQsAAOSw9GVbyzzv/s-l300.jpg
Green = M8 threaded bar x 2, one above the other for additional structural support, on the left it will sit behind the seat support to prevent the clamps from rotating.
Grey = 1.5mm Stainless Steel Plate
Here is the tube situated
To get an idea of how I'm going to do the stainless plate (need to trim the corners on the right hand side of the steel plate, getting close to those tyres!)
Using angle brackets to support the box itself
Been battling with this for a while and this is what I decided on, don't have many mounting points considering the room, and tried to distribute some of the weight across the frame with the tube closest to the front sitting across the frame, I'll keep you updated on how it goes!
garolittle
10 kW
Dude that thing is a beast. Seriously, I am very impressed at how you built this project. Really nice! :thumb: Gary VenomKarts.com
garolittle said:
Thanks mate! I know the thing is going to be a lot heavier than it needs to be as I have went pretty heavy with the brackets and supports, but I wont have to worry about anything breaking loose at least, need to weigh the thing! Got suggestions from your own build?
garolittle
10 kW
No suggestions other than to do your best in preventing your spouse or significant other from finding out how much you spent. I struggle with that one. 
I do have one request. If you have any pictures, can you post some photos of how the RC batteries are crimped or soldered into the 0/2 gauge cable? That would be helpful. Great work! Gary VenomKarts.com
I do have one request. If you have any pictures, can you post some photos of how the RC batteries are crimped or soldered into the 0/2 gauge cable? That would be helpful. Great work! Gary VenomKarts.comgarolittle
10 kW
I'll get a real photo of the connections as soon as I'm back home, but this should hopefully describe it!
It's 50mm2 (1/0 gauge) for the main cable and XT90 and 10awg for the individual battery connections, the 10awg runs are as short as possible considering the amount of current running through them!
The copper butt splices are these https://cpc.farnell.com/hellermanntyton/hcbs-50/unins-copper-butt-splice-50mm/dp/CB15755?mckv=sAoZqbjjd_dc|pcrid|224645161149|kword||match||plid||slid||product|CB15755|pgrid|45968746254|ptaid|pla-561505208799|&CMP=KNC-GUK-CPC-SHOPPING&gclid=CjwKCAjwvbLkBRBbEiwAChbckTpvis_NQFSRCn5S8BhNTLDX9QzQw88d_YAB8wYOt0LO-p49YMsYrxoCY2gQAvD_BwE
It's 50mm2 (1/0 gauge) for the main cable and XT90 and 10awg for the individual battery connections, the 10awg runs are as short as possible considering the amount of current running through them!
The copper butt splices are these https://cpc.farnell.com/hellermanntyton/hcbs-50/unins-copper-butt-splice-50mm/dp/CB15755?mckv=sAoZqbjjd_dc|pcrid|224645161149|kword||match||plid||slid||product|CB15755|pgrid|45968746254|ptaid|pla-561505208799|&CMP=KNC-GUK-CPC-SHOPPING&gclid=CjwKCAjwvbLkBRBbEiwAChbckTpvis_NQFSRCn5S8BhNTLDX9QzQw88d_YAB8wYOt0LO-p49YMsYrxoCY2gQAvD_BwE
garolittle
10 kW
Yes Sir. Now that is excellent. I may try a similar setup for testing purposes. Really appreciate the responses to my questions. You are very helpful. :thumb: Gary VenomKarts.com
garolittle said:
No worries, Ill actually run through the charging setup as well to complete the idea.
So I have 24 batteries in total and are separated into 6 in parallel, I have 4 of these parallel charging boards to bulk charge 6 batteries at once, with the JST extension leads from HK to parallel balance the pack, and 4 of the T6 Lite chargers to connect up to 2 of these 1500w power supplies
I then make sure I balance the batteries individually periodically to prevent cell drift from bulk charging
garolittle
10 kW
Thanks again. This is very helpful. I am new to the RC battery world since I have been focusing on 18650 lithium ion and similar cells. I am interested in creating an RC battery pack to test an AC-9 motor (HPEV.com) and a 48 Volt 600 amp Curtis Controller. The trick is to get as close to 48V as possible using RC batteries.
Edit: I removed reference to BMS since I would simply balance charge the RC pack.
Edit: I removed reference to BMS since I would simply balance charge the RC pack.
garolittle
10 kW
Upperfoot said:
Your set up is tempting. I am testing various 48V (or possibly 72V) configurations for re-sale purposes. Although the required amperage is higher, I really like the low end torque of the AC-9. Speaking of speed issues, what is your estimated top speed? With that much voltage I bet you are flying on the top end!
Well at 80hp and 90ft lbs of torque, with a 2:1 (15f / 30r) gear ratio I should be able to get to 102 mph at 6000rpm, though because I have so much torque I could gear much more aggressively 1.6:1 (15f / 24f) and get to 128 mph (102 mph at 4800rpm)
garolittle
10 kW
Upperfoot said:
Dude..... that is unreal. We simply must see some video. Dang. That is crazy fast. I love it.
garolittle
10 kW
By the way, What is the circumference of the rear tires. Dang.... that is going to be fast. 
I have vega red tyres that are 11.5" in diameter, so about 36" in circumference, they are rated up to 125mph! This is my rear sprocket and my front sprocket which I reamed to 7/8" to fit on the drive shaft of the motor
garolittle
10 kW
You know with a pair of wings attached, you have a decent chance of taking flight. :lol: Seriously, that is an awesome project. Thanks for sharing your progress and keep posting pictures. Gary VenomKarts.com
Little bit of an update on the throttle, got it positioned and hooked up to a Senzo throttle cable.
Still working on the supports for the battery, will be working on it over the weekend!
Still working on the supports for the battery, will be working on it over the weekend!
