XiongDa Two-Speed Motor

[drsolly]

Thanks for the recommendation, and I'm sure you would only use the best. My problem is, I only want one dollop, not an entire kilogram for £40. I could get a replacement motor for that much!

 

[Cyclezee]

Thanks for the recommendation, and I'm sure you would only use the best. My problem is, I only want one dollop, not an entire kilogram for £40. I could get a replacement motor for that much!

We supply dollops

 

[drsolly]

Ah. How much does a dollop cost, and how much does one get in a dollop?

 

[jackhandy]

We supply dollops

I can vouch for that - I've still got half my dollop left

 

[Cyclezee]

Ah. How much does a dollop cost, and how much does one get in a dollop?

One Dollop =100gm, £6 inc.del.

 

[drsolly]

Dollop ordered ...

 

[drsolly]

The gear cover came off easily, I tapped the shaft very lightly with a rubber mallet. Cyclezee is sending me a dollop of grease, so when that arrives, I'll be all set.

Would it be a good idea to put a bit of red hematite on when I reassemble it? To help deter water ingress when I power-wash the bike (you'd be astounded at how caked with mud it gets in winter after riding across muddy fields).

I'm planning to run this off 12S Lipos, and mostly use the manual gearchange, because I'm mostly riding over rough tracks, and doing a lot of stopping and starting.

I've ordered a couple of double-walled rims for this, and when that arrives, I'll check the measurements and order the spokes. I've put a motor in a rim before, but that was a like-for-like replacement, and I just needed to copy what was there before. Truing it was quite fiddly!

The bike I'm using right now, is a 250 watt brushless sensorless with an infineon controller. It works well, except to get it going, I have to get the wheel turning because of the lack of sensors, which on a rough track going uphill is a bit of a pain. I'll be glad when I can try out this motor!

 

[Deleted member 4366]

I'm sure you'll like it. Don't put Hermatite on the joint. Use grease or Vaseline or something like that. You might need to re-grease again in the future.

 

[chantelauze]

this greasing issue is quite annoying for a potential customer, i've had different brands of chinese hub motor in past years and never i had to service any motor with additive grease, if the grease quality is unsuitable or no special wrench is provided by Xda for easy opening up the 2 speed motor, then this clever improvement might become a consumer nightmare, thank you for the early adopters, i will follow carefully their comments before ordering

 

[trex]

chantelauze, all motors need greasing, Bafang, Bosch etc included.
The xiongda XD shell is one of the easiest to open, and filling the gearbox with grease seems to be a good idea that perhaps Xiongda should be doing in the future.

 

[Deleted member 4366]

this greasing issue is quite annoying for a potential customer, i've had different brands of chinese hub motor in past years and never i had to service any motor with additive grease, if the grease quality is unsuitable or no special wrench is provided by Xda for easy opening up the 2 speed motor, then this clever improvement might become a consumer nightmare, thank you for the early adopters, i will follow carefully their comments before ordering

Xiongda have already changed the grease. We have to wait to see whether they've put enough on.

Considering that the whole kit including LCD, controller, throttle, switches, PAS, costs about $150 (£100), for Xiongda to use grease that costs £6 a dollop, it would probably double the cost of the motor.

When your new motor arrives, it takes no more than 5 minutes to take it apart and grease it. You don't need any special tools. If you want one ready-greased, I have one on Ebay. It's new.

 

[drsolly]

OK. I took the motor apart, wiped out as much of the existing grease as I could with tissues (I thought that cleaning it with solvent might not be a good idea), and dolloped some grease in supplied by Cyclezee. I'd guess I used less than a teaspoonful, so I have enough left over for 100 more motors.

Reassembling it was, of course, the reverse of taking it apart, but I learned that you shouldn't grip the motor in your fingers while trying to put the body back together, because a slight sticking-out bit of metal sliced painfully through a fingertip. Experience always costs.

So the next stage will be when the rims arrive.

I looked at the controller. It's a KT36SVPR-XD15. Inpout voltage is 36v (I'm hoping to run it at 12s, which is 50 volts when fully charged, low voltage cutout is 30v, max current 15A.

It didn't come with a throttle, but I guess it'll take any standard thumb throttle. I hope.

 

[Cyclezee]

Just to clarify, I'm never going to get rich selling dollops
1Kg of Molykote PG-21 costs £55.07 including delivery so when you factor in postage and packing, @ £6 for 100gm I am selling at a loss

I only apply it to the ring gear and estimate 10gm is enough per motor.

 

[Deleted member 4366]

The Xiongda is completely different to an Ezee or Bafang motor. There's 7 gears altogether. I'm not sure what rattles, so I just slap it everywhere. I use about 50g.

 

[Cyclezee]

The Xiongda is completely different to an Ezee or Bafang motor. There's 7 gears altogether. I'm not sure what rattles, so I just slap it everywhere. I use about 50g.

I am aware of that which is why I was surprised when drsolly said 100gm was enough for 100 motors, but i'm sure that comment was tongue in cheek

Perhaps the amount of grease required should be measured by volume rather than weight or dollop

 

[Deleted member 4366]

With the Xiongda, it's best to fill it up. Efficiency might suffer, but it'll definitely be quieter. I wonder if oil would be a better solution.

 

[drsolly]

What I meant, was that the grease I got from Cyclezee was a very generous dollop.

When I greased the gears, I went by what was already there; I thought I was replacing the original inferior grease with superior grease, so I put in about the same volume of grease.

If when I run this, the noise bothers me, I can put in several more teaspoonfuls! I think I prefer a bit of noise, to less efficiency.

 

[Deleted member 4366]

It's not so much noise. It's more grating like dry bearings - not very pleasant when it happens. If you get it, you'll want to fix it. Trust me.

 

[drsolly]

I thought, the whole point of using forums like this is so that one can get good advice from experts. So I opened the motor up again. Before, I'd spread a little grease thinly, like butter on toast. This time I slathered it on like marmalade in dollops.

Opening it up the second time was a *lot* easier than the first tmie, because having done it before, I was confident about tapping it with a hammer.

 

[drsolly]

Spokes ordered (from http://www.tillercycles.co.uk/), and spoke washers. I calculated 213mm spokes needed, and I asked the vendor for the strongest spokes. I'll be lacing a 1x pattern, and I'll use spoke washers to help the spokes bed into the hub. If I make a complete shambles of the wheel, they'll sort it out for me for £25, which sounds like a good offer. The tire has arrived, a Schwalbe Blackjack, which is what I usually use, I already have the super-thick inner tube. So as soon as the spokes arrive (probably Wednesday) I'm ready to make the wheel.