Rear Differential Axle Kits on ali/ebay

[hypersphere]

For example: Rear Differential Axle Kit 48V 1000W Electric Motor Go Kart Cart ATV Trike Golf | eBay

I see these all over ebay and aliexpress. Anybody used them before?

This would be a powered bike camper trailer.

 

[Chalo]

For example: Rear Differential Axle Kit 48V 1000W Electric Motor Go Kart Cart ATV Trike Golf | eBay

I see these all over ebay and aliexpress. Anybody used them before?

This would be a powered bike camper trailer.

Seems like a good application for that motor axle, if small diameter wheels work for you. I think the free RPM is too high for typical bicycle wheels (plus you'd have to figure out some kind of hubs or else monolithic wheels).

I haven't seen one in person, but I too am curious to try one. Someone else here, can't remember who right now, noted that those axle assemblies are very heavy. I don't know what that is in customary units, but it doesn't seem like a deal breaker for a cycle camper.

Have you used a pusher trailer before? Will this thing be towed by an e-bike or by a pedals only bike?

 

[hypersphere]

Ebike. I'm thinking of using a force sensor on the hitch and having it automatically adjust the throttle for a fixed amount of drag force on the tow bike.

I wouldn't want to build around it and find out it breaks after 1 Megameter though. Rather just use standard bike components then, even if they cost much more.

 

[stan.distortion]

13mph, it's enough? Bigger wheels an option?

Edit: Sry, didn't see the 2 models, 20mph

 

[chuyskywalker]

Not the same, but looks a heck of a lot like what this guy used.

 

[LewTwo]

Perhaps look at the vehicles using this rear axle assembly? I suspected golf carts, go-carts, ATVs and such. Then I happened to run across this thing. They do not have a good picture on the site of the rear end (seems common for trikes) however there is a bit of video where you can see the rear differential/axle and it looks very similar.

Note that they also mention this being 3 speeds (i.e. there may be no variable (twist or thumb) throttle).

2000W Electric 3 Wheel Fat Tire Scooter Trike Harley Chopper Style CityCoco

2000W Electric 3 Wheel Fat Tire Scooter Trike Harley Chopper Style! Limited Quantities Available! Call 1-866-606-3991.

www.saferwholesale.com

 

[Hillhater]

Have you considered just using a pair of bike hub motors in 16-20” rims. .
A lot les weight and mechanical complexity than the diff axle .

 

[hypersphere]

however there is a bit of video where you can see the rear differential/axle and it looks very similar.

Note that they also mention this being 3 speeds (i.e. there may be no variable (twist or thumb) throttle).

2000W Electric 3 Wheel Fat Tire Scooter Trike Harley Chopper Style CityCoco

2000W Electric 3 Wheel Fat Tire Scooter Trike Harley Chopper Style! Limited Quantities Available! Call 1-866-606-3991.

www.saferwholesale.com

Hmm, thanks. Not sure how to judge reliability from that though. Even if I found a reliable one of those, I'm not sure how I'd track that back to the supplier.

 

[hypersphere]

Have you considered just using a pair of bike hub motors in 16-20” rims. .
A lot les weight and mechanical complexity than the diff axle .

Yeah, but to avoid differential pulling I'd rather have both motors powered, which is then more money. And with our steep hills around here, lightly-powered doesn't cut it. Likely the drag on these units is really high and regular parts are the way to go.

 

[Hillhater]

Yeah, but to avoid differential pulling I'd rather have both motors powered, which is then more money. And with our steep hills around here, lightly-powered doesn't cut it. Likely the drag on these units is really high and regular parts are the way to go.

Yes both motors powered, separate controllers but single speed control/throttle.and battery
use geared motors with internal freewheels for low drag.