owas

Well-Known Member

• Mar 20, 2019

• #21

FlyingPete said:

The motor spins at the gearbox output speed, all the time. There is no rpm matching needed as they are mechanically connected and spin together. The applied motor current then determines the driving or braking torque provided by the motor. A free-spinning motor with no load applied has minimal drag torque.

Click to expand...

Ah I get it now.
So it really is as simple as bolting a motor on.

I saw one company in AUS that bolt the motor on as a belt driven 'supercharger' and run it on the crank, so fairly similar really.



I'm trying to work out how to explain it to the insurance, it's essentialy just a PTO attachment really?

As soon as I confuse them it'll be a no

 

Last edited: Mar 20, 2019

flat

Well-Known Member

• Mar 20, 2019

• #22

How will you control the motor on and off? I.e how will the motor know when to apply power to the vehicle?

 

owas

Well-Known Member

• Mar 20, 2019

• #23

flat said:

How will you control the motor on and off? I.e how will the motor know when to apply power to the vehicle?

Click to expand...

Big solinoid activated by the stop solinoid on the fuel pump should do it, or just a switch.

Power to the motor is through a controller that uses something like this hooked up to the throttle linkage

https://www.evwest.com/catalog/prod...ducts_id=94&osCsid=7uknp2e19tjk02aqnstjoretc2

I should be able to source most things things from an electric forklift

 

Last edited: Mar 20, 2019

300bhp/ton

Well-Known Member

• Mar 20, 2019

• #24

What sort of power are fork lift trucks rated at? This seems like a pretty cool idea overall. Just wondering what actual gains are likely to be had.

 

marjon

Well-Known Member

Full Member

• Mar 20, 2019

• #25

Just seen this.
Interesting and I see no reason why gains could not be got, in someways.

Using the motor to regenerate for brake assistance and all sorts of clever stuff.

I guess a good bloke to ask would be the 6 wheel discovery guy(can’t remebr his name) he seems to know electrickerty.

J

 

flat

Well-Known Member

• Mar 20, 2019

• #26

IF it really is as simple slapping in some batteries and a motor on a PTO with a switch and a forklift controller I would be very surpirsed tbh, especilly when you want to start combining regenerative braking, braking assist and charging when coasting etc and balancing the motor with the engine at motorway speeds etc.

I think it sounds simple in concept but I suspect the application will be far more difficult.

Not saying it can’t be done but I suspect it will have some engineering challenges!