It would definitely be more simple to use the motors permanently coupled, simpler and therefore more reliable.
Could be that the semi brakes down on that, or on the many other stuff that is new on that thing.
I think it is interesting for higher rpm motors that deliver much relatively late in the rpm band (torque is available from the start) You could use one to get up to speed and the other for a more reasonable high cruising speed.
I guess there are several alternative options:
- just use one motor, reusing the original transfercase. Giving you the low range option as well. Downside is that if you use a high rpm motor, the 40 year old gearbox is not built for those RPMs, so software limitation is needed, or reduction gearbox.
In case of using two hyper9s, possibly with a 2:1 reduction gearboxes directly connected to the driveshafts it could work.
In case of higher RPM (like that recently discussed Zonic 180, or a Tesla motor dissassembled from the drive unit), then much higher reduction gearboxes are needed (4:1)?
Whatever you build, it will drive, but since these are classic 4x4s, you don't want to go 200kph, and we can try to get the rpm window much closer to the actual usage (0 to 130kph or so.)
Could be that the semi brakes down on that, or on the many other stuff that is new on that thing.
I think it is interesting for higher rpm motors that deliver much relatively late in the rpm band (torque is available from the start) You could use one to get up to speed and the other for a more reasonable high cruising speed.
I guess there are several alternative options:
- just fixed same gearing, don't try to do anything "smart"
- fixed different gearing but staying in the RPM range of both motors. This way highway cruising speed would probably max out one of the electric motors.
- just use one motor, reusing the original transfercase. Giving you the low range option as well. Downside is that if you use a high rpm motor, the 40 year old gearbox is not built for those RPMs, so software limitation is needed, or reduction gearbox.
In case of using two hyper9s, possibly with a 2:1 reduction gearboxes directly connected to the driveshafts it could work.
In case of higher RPM (like that recently discussed Zonic 180, or a Tesla motor dissassembled from the drive unit), then much higher reduction gearboxes are needed (4:1)?
Whatever you build, it will drive, but since these are classic 4x4s, you don't want to go 200kph, and we can try to get the rpm window much closer to the actual usage (0 to 130kph or so.)
