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  • Glennmoss
    Moderator
    Post count: 338
    in reply to: Dans ‘65 Tesla #80710

    So looking online this motor a capable of producing 600NM.

    With EVs, the drive motors are typically direct drive. A peak torque of 600Nm at the motor is large, but at the wheel is actually not that big, so you’ll need some additional gear reduction to get going. After 9.73:1, that puts mathematical torque at over 5800 Nm 😎 and that’s actually pretty normal for wheel torque with an EV.

    This motor controller is just using the existing control board, so it shouldn’t be limiting its output. I’m betting that we’ll need to dial in the power a bit to somewhere that will allow us to put it down given the lower weight of the bug.

    Glennmoss
    Moderator
    Post count: 338
    in reply to: Dans ‘65 Tesla #79958

    Looking good! Here’s a general list of things to consider:

    • Battery management system (BMS) – do you have one yet? This measures the voltages of all the cells in the battery pack and keeps them at an even level. You will need to run wires from each battery module back to the BMS.
    • Contactors and fuses – you will need a contactor to switch the HV energy off between the battery and the drive unit. These need to be kept in a Water/dust proof box.
    • Cooling system – The drive unit will need to have some coolant cycling in it to function. You will need a small radiator and reservoir tank. Batteries can be kept air-cooled but would be better with some type of cooling.
    • Motor controls – You will need an electric accelerator pedal, a CAN display screen where you can select drive modes, CAN harnesses. For the small tesla drive unit, we had to buy a new control board because the controls are locked to the VIN of the vehicle it came out of. I don’t know whether the large motors have been successfully “hacked” where you can control it without needing a new control board.
    • Charging – you will need a J1772 outlet mounted somewhere and a charge controller. The charge controller will need to be wired to your BMS and your battery.
    • Safety –
      • Insulation is always important. Get high voltage safe gloves for attaching the battery modules in series.
      • Do not work on the battery alone. Have a second person present when wiring up the battery.
    Glennmoss
    Moderator
    Post count: 338
    in reply to: Dawgs #77925

    8ECF412A-DEB3-4DD3-80AB-32E256484DC07A060174-8DA3-4865-9AB3-D6DEF7D9FADC09A633C9-5ECC-4EDE-8A40-CAA51F5308EC8E1C2A03-4EDB-4124-97FD-834D7350245B

    Glennmoss
    Moderator
    Post count: 338

    Those Westy tents have definitely gone up in value. Hard to beat them in terms of style and usability for camping though.

    Glennmoss
    Moderator
    Post count: 338

    Congrats Cole and team! What an accomplishment!

    Glennmoss
    Moderator
    Post count: 338

    Been out of commission for about 3 months, but finally got the bug back! I had them weld in the rear bumper metal and mount the bumper for me. Super excited to have it back. Got lots of thumbs up and made lots more smile just on the way home  262837A6-BE8E-4BE3-9F55-A389FBB40CC9

    Glennmoss
    Moderator
    Post count: 338
    in reply to: KCW randomness #76978

    Found this crazy old picture on the internet todayAE4AE11B-233D-46E5-80CB-F6C37CDA2795

    Glennmoss
    Moderator
    Post count: 338

    Moss crew made it to San Diego. Camping here in the rain tonight. Here are some more photos from BBB B9B8B051-C907-4AAD-9129-D66EA11D43EF9258C042-C350-4B99-BE5A-21E19BCE7A86D0FB1C28-B84D-4759-B8AA-022325B1740893DA76AC-1291-4168-A540-A2AC13E0AB756F0B7060-CF9B-4873-983C-22E4F3834F54

    Glennmoss
    Moderator
    Post count: 338
    in reply to: KCW randomness #72106

    check out this crazy bug build

    https://www.facebook.com/groups/800677083703772

    Glennmoss
    Moderator
    Post count: 338
    in reply to: Jason's Projects #70986

    Is the show tomorrow Jason? Look for Michael Bream and the EVWest guys they’re gonna be there

    Glennmoss
    Moderator
    Post count: 338

    I need a chunk of bed metal… or I am gonna weld some cargo floor over that hole!! Must have been a air cleaner hole!!! 662C1266-BD4F-4681-A9BA-F21A9B43BE64

    There was a corvair motor in it from what I was told, and they cut that hole for the carb. I say just throw a snorkel on it for Shasta river crossings😉

    Glennmoss
    Moderator
    Post count: 338
    in reply to: Dans ‘65 Tesla #70839

    Talked with Michael this morning. He’s stoked on the project. He thinks 408v will be too high for the motor. Wants to setup time to meet and discuss early next week. Franz is there a day that works best for you?

    Glennmoss
    Moderator
    Post count: 338

    You’re crushing this build! 💪💪💪 working in those tight spots is not easy

    Glennmoss
    Moderator
    Post count: 338
    in reply to: Dans ‘65 Tesla #70548

    If you want the most performance, 32 modules split into two 16 module packs in parallel will get you 408v 1000a. 16 modules would be 408v 500a.

    Glennmoss
    Moderator
    Post count: 338
    in reply to: Dans ‘65 Tesla #70475

    Batteries ⚡⚡⚡

    LG Chem

    Height: 14.25 Inches
    Width: 8.00 Inches
    Length: 6.25 Inches

    https://www.evwest.com/catalog/product_info.php?cPath=4&products_id=481&osCsid=bd1957e69e626fcd923b72356d1c4a2d

    12 modules will get you 360v, 32kWh (range), 400A, and weigh 456lbs (2 parallel of 6 modules in series)

    LG Chem Super Cell

    Length: 16.75 Inches
    Width: 5.0 Inches
    Height: 4.125 Inches

    https://www.evwest.com/catalog/product_info.php?cPath=4&products_id=534&osCsid=bd1957e69e626fcd923b72356d1c4a2d

    12 modules will get you 306.6v, 19.2kWh (range),  500A, and weigh 240lbs (12 modules in series)

    Motor 💪💪💪

    The motor that you have chosen needs 275-400 Volts, maximum 1150 Amps (I suspect a minimum of about 200-300A), 400kw!!, and weighs 290 lbs

    The combo of more Volts and Amps equals more power. You can add more of the super cells in series to get more voltage and range.

    See how many you can fit and let me know what you’d like to do and I will call up EVWest

     

Viewing 15 posts - 31 through 45 (of 338 total)