ElectricMotorcycleForum.com

Hi there!

I´m offering a used (but in mint condition) conversion kit, which makes it possible to use a KTM rear wheel on a zero fx and zeros using the same swing arm.
Because of the fact, that it is easier to find a used ktm wheel than a zero rear wheel i made this kit.
It has a custom made aluminium 65 tooth sprocket wheel, a spacer 5mm for the axle and 6 spacers with screws to put between the wheel hub and the brake disc.

Iy anybody is interested, please send me a pm or e-mail.

Best regards,

Christian

Hi Guys!

For the European dirt-riders along you, the Mont Chaberton is maybe a known place to be at least once a lifetime.
The peak holds an old ruin from the first world war. An article in German language can be found here: https://westalpen.wordpress.com/2011/09/26/mont-chaberton/

But let´s talk about the ride:

I started riding from Susa Valley, in about 1000m height above sea level.
The estimated distance to beat was "only" about 50km, but i contained about 2500 heightmeters to climb.

At km 20 and a climb up to 2200 meters my "fuel"gauge looked not too good. Even by riding an energy saving style it looked not like if I´m going to see the peak.

But we contiunued the climb, even if I would not make it up to the top.
As we arrived on the colle Chaberton at 2700m, the gauge showed only one bar left. Still about 400m to climb....

After a thrilling remaining ride, I arrived at the top of the mountain with just a little power left.
But I was thinking positive, loading enough energy on the way down to manage also the 250m high climb on the way back.
At the end, after 57km and 3028 meters uphill,  I rolled into the camping site with an 5% leftover of power.


But i did it!
FIrst electric motorcycle on top of Mont Chaberton....

Best regards,

Chris. 

Hi,

a few days ago I was changing the front sprocket of my FX. Part of that work was to remove the swingarm.
As I was dismounting the swingarm, I was surprised to see, how the swingarm is kept in position.
Not only that the bearings are ball-type instead of needles, but the screw nuts left and right of the swingarm were made as a bushing, fitting into the bearing.
On the outer side of the swingarm-bearing (looking to the frame) there was no second bushing. So - if you tighten the Screw later,
you will start to pull the bearing out of its seat. Strange solution of an easy duty, as I think.
Or maybe in my FX parts are missing?
Additional, all bearings were out of order, after 1600kms of use, about 50% of them offroad use. Sealing against mud and water is insufficient.

What do you think about the system, how the swingarm is mounted?

Best regards,


Chris

Hi everybody!

I wonder, if it is posible to use a KTM rear wheel in a Zero FX.
The diameter of the KTM axle fits as well as the outer diameter of the brake disk.
The Problems are starting with the dimensions of the wheel hub. Has anybody yet
taken the measurements of the zero FX wheel hubs? It looks like the hub of the KTM is more wide than the zero.
This could cause problems to fit chain wheel AND brake disk into their right orientation.

I would prefer the KTM wheel because of its better stiffness and its leighter weight of 1kg.
Plus I have one complete spare wheel from KTM standing around here...
Also the axle with the two aluminium pieces to tension the chain and the screw nut weights 100gramms less than the Zero stuff.

I also have a supplier, which would produce chainweels, that would fit to the KTM hub with a maximum of 70 cogs.

So if anybody has any experience with using different wheels with a Zero FX, please let me know.
Also If you have already made exact measurements of the wheel hub, distance bushes and so on, front and/or rear wheels - please let me know!

Thanks very much!

Chris

Hello Forum users!

I am new in this forum, almost as new as my Zero Fx is. I live in Germany and do ride my FX mostly offroad.
Because of the fact that the grip on offroad can change very fast, I am not very satisfied with the two-step
recuperating possibility, controlled by smartphone.
Instead of using the brake switch and the gas grip as the two "steps" to get recuperation, I would rather prefer
to handle the recuperation through a analog input of the Sevcon Controller.
Therefore we would have tow possibilities:

1: Usa a "two way" throttle grip:

Let me explain this. The normal way turning the gas grip will speed up. (like it does now)
From the zero position of the gas grip where a small latch could let the rider feel the „zero position“ you can turn the gas grip to the opposite side. This would cause a stepless regulation of the recuperation.
It would give the rider a much better way to handle the fast changing characteristic of the ground (wet, muddy, hard, dry and so on).
The rear wheel would not lock because of too high settings of the recuperation mode.
With this feature we could load more, if the ground is hard, or load less, if the ground is slippery.
I hope, you understand my explanation.

2. Use of pressure sensor at the handlebar, like a clutchlever. So the rider could decide to use the recuperation level from 0-100% instead of the rear-brake, or also use the footbreak to do additional breaking. This would be my first try to use this solution. Because it would be more safe than to use the throttle grip. Although I think, that the throttle grip would much more handy...

Is anybody here, who has used the Analog input of the Sevcon Gen4 Controller at Pin 23 and 35?
Is there any programming at the controller neccessary and if, with what kind of programmer?
I am working as electronic technician, so I have access to different CAN Utlities at work.

It would be very helpful, If somebody has already some experiences with the Controller.
The task itself to use the recuperation analog, is not too big, as i believe.
By the way: Where is the Bluetooth changing data inside the controller?

Best regards from Bavaria, Germany.

Christian