Yose Power Rear Hub...Torque Arm Needed or Not?

[Sheffield_Tiger]

I'm aware the Yose Power rear hub kit is a basic affair with a low end controller, and its a bit unmodulated, but im happy enough with it as a cheap conversion. Hopefully I'll use it less and less and move back to a normal bike more but that's by the by.

Im just wondering if i should be adding a torque arm? And if so, any recommendations?

I put on a couple of stones during COVID (and there's only so long that excuse lasts!) and if im using a bike, I use it, load up the panniers etc, so ive been technically a bit naughty and plumped for the 350W kit, to give me that extra push uphill with the extra weight and load without going mad speed-wise. I figure uphill, 350 is doing for me and my load, what a 250 does for a featherweight rider...

But as the motor is generating more torque, is it likely to chew up my rear dropouts without a torque arm?

 

[raleighnut]

I'm aware the Yose Power rear hub kit is a basic affair with a low end controller, and its a bit unmodulated, but im happy enough with it as a cheap conversion. Hopefully I'll use it less and less and move back to a normal bike more but that's by the by.

Im just wondering if i should be adding a torque arm? And if so, any recommendations?

I put on a couple of stones during COVID (and there's only so long that excuse lasts!) and if im using a bike, I use it, load up the panniers etc, so ive been technically a bit naughty and plumped for the 350W kit, to give me that extra push uphill with the extra weight and load without going mad speed-wise. I figure uphill, 350 is doing for me and my load, what a 250 does for a featherweight rider...

But as the motor is generating more torque, is it likely to chew up my rear dropouts without a torque arm?

What frame material ?

 

[Sheffield_Tiger]

Aluminium though hefty enough (a 17 year old Giant CRS 3)

 

[Dadam]

What's the torque? It's peak torque not max continuous power that would rip the axle out of the dropouts. Also how deep in the dropouts does it fit? I put a torque arm on my 250w Woosh kit as the axle was quite shallow in the dropouts (2019 Giant hybrid).

On balance for the 10-15 quid they cost I'd fit one.

 

[Jameshow]

If your not precious, and you have a solid axle with enough thread you could put some large washers possibly roughened up to grip the drop outs?