Difference between Hub Motors and mid drive motors?

[AC-EUV]

I am currently building a mini electric quad standup scooter type vehicle which is currently powered by a single 1000w 48v my1020 brushless motor and chain to the rear axle which drives both rear wheels together, however I am now thinking I would like it 4 wheel drive, so was looking into fitting hub motors for the two front wheels.

I have found a few 13" single shaft 48v hub motors on Alibaba which I think might work

However I just wondered if they are different to use compared to the my1020 style motors as the rpms seem much lower.
The 1000w hubwheel motors I have found are approx 1500rpm yet my original my1020 brushless style motor seem to be 3000rpm or so

Or is it just that these 1500rpm hub motors are the optimal rpm for direct drive?

Is there anything more I need to know about using hubmotors on the front wheels whilst still using the separate my1020 motor powering the rear axle?

(Obviously I will have to get two more controllers to power them)
But if there is anything I am missing?

 

[E-HP]

However I just wondered if they are different to use compared to the my1020 style motors as the rpms seem much lower.
The 1000w hubwheel motors I have found are approx 1500rpm yet my original my1020 brushless style motor seem to be 3000rpm or so

Or is it just that these 1500rpm hub motors are the optimal rpm for direct drive?

3000rpm, and a 13” wheel is 116 mph. 1500rpm would be 58 mph. Is your goal for the scooter to go over 58mph?

 

[AC-EUV]

3000rpm, and a 13” wheel is 116 mph. 1500rpm would be 58 mph. Is your goal for the scooter to go over 58mph?

Sorry not sure I was clear
The my1020 brushless motor has an rpm of 3000 but this is chain driven and has a small drive cog and a rear cog on the axle which I'm guessing is what keeps the top speed down

The 1500rpm motor is the built in Hubwheel which is what I was thinking of buying to use on the two front wheels of my scooter/quad

I only really need it to do 25/30mph max but would be nice to have more torque to ride over sand on a beach for example which is why I would like 4 wheel drive

 

[E-HP]

There’s a trade off between torque and speed. If you use a motor designed for 58 mph, and use it for 25 mph, you’ll have a lot less torque than if you used a motor with slower motor windings; plus you’ll take an efficiency hit as well, which translates to more heat.

 

[AC-EUV]

There’s a trade off between torque and speed. If you use a motor designed for 58 mph, and use it for 25 mph, you’ll have a lot less torque than if you used a motor with slower motor windings; plus you’ll take an efficiency hit as well, which translates to more heat.

Ok thanks yes that makes sense

So ideally I would need hubmotors with alot less rpm than 1500?

At the moment with my single 1000w chain driven motor on the quad/scooter it is struggling a bit on wet sand on the beach and also is actually struggles to start moving at all on a slight hill on grass but not sure if that is to do with only having a 30amp battery
My thinking was to just add two front hubwheels to give it more power so it would also go over deeper sand and hills no problem

I just want it to work everywhere ideally, hills sand the lot even if that means replacing the battery too