Electric Drift Trike RWD

hi guys

i'm looking at making a drift trike,



I've been looking at dual motor with belt drive using flipsky 6.6 dual VESC . What would be the largest dual motor setup i could run on either 12 or 13s lion battery (right near the VESC limit..hehe)

I've been thinking maybe this
https://www.aliexpress.com/item/DC48V-60V-72V-1200W-3200rpm-Small-DC-magnetic-brushless-motor-differential-motor-electric-scooter-motor/32813151889.html?spm=a2g0s.13010208.99999999.375.6bec3c00cTNsIi

or this
https://www.aliexpress.com/item/QS-Motor-New-Launched-Product-1000W-90H-mid-drive-Motorfor-electric-motorcycle/33009867558.html?spm=2114.10010108.1000013.2.59496acekfOJlN&gps-id=pcDetailBottomMoreThisSeller&scm=1007.13339.99734.0&scm_id=1007.13339.99734.0&scm-url=1007.13339.99734.0&pvid=7976684a-62fe-4f36-acdc-0253d499fa54

keen to see how far this little VESC can go

or i will stick to one motor and drive an axle

like this
https://www.aliexpress.com/item/11-11-QS-MOTOR-3000W-138-70H-mid-drive-motor-with-EM150S-controller-max-speed-100kph/32945824599.html?spm=2114.search0104.3.1.5bdf30f3f6jrpH&ws_ab_test=searchweb0_0,searchweb201602_7_10065_10130_10068_10547_319_317_10548_10696_453_10084_454_10083_10618_10307_537_536_10131_10132_10133_10059_10884_10887_321_322_10103,searchweb201603_52,ppcSwitch_0&algo_expid=e5b8ec74-0b15-46e6-a5cc-50b7360b92ad-0&algo_pvid=e5b8ec74-0b15-46e6-a5cc-50b7360b92ad&transAbTest=ae803_5

Is there any specific reason why you'd like to use a dual motor setup?

If not, maybe you can have a look at what the awesome/insane Youtuber Colin Furze just did:
https://www.youtube.com/watch?v=otlR05QZRrU

Dui said:

Is there any specific reason why you'd like to use a dual motor setup?

If not, maybe you can have a look at what the awesome/insane Youtuber Colin Furze just did:
https://www.youtube.com/watch?v=otlR05QZRrU

Click to expand...

Dual setup mostly because I have stub axles on the trike so just less fabbing involved.
Got gng 2016 kit with 72v lipo.
Just getting a few more bits and pieces together before I try to test it all out.

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perhaps two of these https://alienpowersystem.com/shop/brushless-motors/63mm/aps-6374-outrunner-brushless-motor-60kv-2800w/ There are plenty of dual 6374 longboard builds and vesc runs them perfectly. There are also a lot of pulleys for them and it shouldnt be too difficult to fabricate mounts and transmission.

So I went with some old motors from gng. It's been slow going with other commitments taking priority but shouldn't be long before a finished project

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Got some testing done last night, motors turned! BMS on!

Then $15 dc converter (72v to 12v) went 72v on the 12v side and blew the 12v coil on the gigavac contactor. Lucky no other damage. Lesson learnt on fusing 12v side and sizing dc converter to FULL pack voltage 84v approx.

So new contactor and dc converter to be ordered before any more testing.

not sure if chargery bms 24t is working correctly as there is large volt differences between cells (180mv) and set it to balance and no change. Any help here will be much appreciated.

AU $20.71 | Step down Transformer Electric DC Converter Adapter 48V 72V 96V TO 12V 10A USB 5V
https://s.click.aliexpress.com/e/cEcScHmu

https://www.evworks.com.au/gigavac-minitactor-50amp

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Bikegirl said:

Then $15 dc converter (72v to 12v) went 72v on the 12v side and blew the 12v coil on the gigavac contactor. Lucky no other damage. Lesson learnt on fusing 12v side and sizing dc converter to FULL pack voltage 84v approx.

Click to expand...

I've also found that cheap chinese dc-dc converters have a nasty habit of passing input voltage straight to the output when they blow.

Pretty much all phone and laptop chargers these days are switch mode and will run fine on 72v dc. I've found most are fine down to around 30v and are far better quality than the cheap dc-dc converters.

Thanks district9prawn. I was sceptical to think that they would take the dc on the input side but I've seen a few people here who have done it

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Test run today!!
Wow, it's pretty fun.

Had to modify the drive spindle on one side as the thread undoes when running, small grub screw fixed that.
Also running with a different 12v source at the moment as we are still waiting for the dc converter.
Also waiting on replacement precharger, using a Resistor for now.
Needs a coat of paint once the right parts get in. http://cloud.tapatalk.com/s/5d6ad5af0ee69/received_2366295110255048.mp4

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Well, new battery and bms setup on this frame now as the lipo was left connected to the bms and drained it to zero....
Now at 52v down from 72v but still fun to slide around in. Got the hard case 14s7p from Em3ev and keen to try and connect it to vbms app if anyone knows how. http://cloud.tapatalk.com/s/5e19b2a8ca01c/20200110_200735.mp4

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