Replacement righthand crank for TSDZ2 kit?

[MattH]

Can anyone suggest where I can get a replacement righthand crank?

The righthand crank on my TSDZ2 conversion kit keeps working loose despite my best attempts. I'm hoping a replacement crank will fix the problem.

Most of the I can find come with a spider which is no use. I've seen some random one on Amazon but they have a variety of poor reviews so don't really want to order them and find they aren't any use.

 

[Nealh]

One can use a few differing sq taper cranks.
I use a pair of E6000 cranks on my bike, though had to shave 3mm off the inside boss's for a tighter taper fit.
FSA CK220 JIS as used on Yamaha pw -e bikes.
BBS cranks.

tsdz tsdz2b TONGSHENG 170mm crank for tongsheng TSDZ2 electric bicycle mid motor | eBay

Tsdz2 std cranks have quite a wide Q factor , if one wants a narrow Q profile then use a pair of different ones.

 

[Sturmey]

I ground off the swaging to remove the chainwheel from a regular right hand crank when I was fitting 155mm cranks to TSDZ2. They were used steel budget cranks but I think they are better quality than the originals.