E-scooter: help with mounting rear wheel sproket

[Armon]

That's actually very reassuring, thanks!

What are your thoughts on this: http://www.hobbyking.com/hobbyking/store/__45162__Turnigy_Trackstar_1_5th_Scale_Sensorless_200amp_8s_Opto_Car_ESC_UK_Warehouse_.html

I know it's an overkil, but the price is amazing and it is available in UK (faster delivery).
Price is a massive factor for me, i'm trying to find something suitable within 70gbp.

I browsed again through other scooter posts, and people reporting success with 6s cells. finding an ESC for that is way easier.
I've just cancelled the order for the 2x 8S lipos until i do bit more research.

 

[made_in_the_alps_legacy]

What are your thoughts on this: http://www.hobbyking.com/hobbyking/store/__45162__Turnigy_Trackstar_1_5th_Scale_Sensorless_200amp_8s_Opto_Car_ESC_UK_Warehouse_.html

I hope your motor will support what this big boy is going to throw at it, (at least, you would be conservative on the esc side)
don't forget to get the programming card to enjoy the various parameters that can be changed and which will give you endless fine tuning abilities. with respect to battery choice and the respective PM we have had, for the same volume you should increase the overall capacity (so autonomy) going 6s i.o 8 or 12s (i think)

 

[Armon]

I can't make up my mind on whether to go for 6s or 8s setup...

6s is tempting, but worried that it may not be powerful enough

 

[torqueboards]

On a scooter go 8S definitely.

Scooter it's easy to throttle down.

 

[tuurb]

hi,

looks nice! How are you going to install the motor?

About fixing the sprocket to the wheel:
I would lasercut a circular part that you can use to center your sprocket together with the center of your wheel and then work with spacers on the flat parts in the spokes of the decathlon wheel.
you can maybe use plastic spacers of the brand igus (if you pretend to work for a technical company they offer free samples )

I did a similar centering on my rearwheel.

about 6s or 8s or higher: my experience is that you need the higher voltage if you want to accelerate at normal accelerations.
my setup with 6s bateries and a 19:90 gear ratio was not comfortable to drive because i had to accelerate really slow or the motor would loose sync.
on 8s it worked much better...

regards, Tuurb

 

[666yeti666]

I wonder how you will mount the sprocket on your motor axis.

I've bought a sprocket with a 8mm bore that is mounted on the motor axle and holds with a roll pin. See here : https://electricscooterparts.com/sprockets25chain-motor.html
Maybe it helps ....

oh and this is the start of my built : http://endless-sphere.com/forums/viewtopic.php?f=12&t=58328&p=870953&hilit=666yeti666#p870953

regards
Sebastien

 

[Armon]

So I've finaly made an order for electric parts, motor, esc, batterries.

The rear sprocket has already arrived with the chain and i'm waiting on the motor sprocket to come today/tomorrow.

I've picked the rear sprocket with 24mm internal diameter, this is just a tad larger than the bearing. it has 3 mounting holes and the plan is to drill straight through the wheel at those 3 places and have some sort of the ring on the other side.

I wish i had an ability to lasercut parts, that would be truly epic, sadly, i'll have to do this manualy.

I'll post some solidworks screenshots shortly.

 

[Armon]

I wonder how you will mount the sprocket on your motor axis.

I've bought a sprocket with a 8mm bore that is mounted on the motor axle and holds with a roll pin. See here : https://electricscooterparts.com/sprockets25chain-motor.html
Maybe it helps ....

oh and this is the start of my built : http://endless-sphere.com/forums/viewtopic.php?f=12&t=58328&p=870953&hilit=666yeti666#p870953

regards
Sebastien

How far did you get with that? the motor looks so small on the frame, does it really have enough power?
if so, facinating. I'm little more reassured about my project.

i'm using 9:72 ratio, hoping this will be enough reduction to give solid acceleration.

 

[666yeti666]

How far did you get with that? the motor looks so small on the frame, does it really have enough power?
if so, facinating. I'm little more reassured about my project.

i'm using 9:72 ratio, hoping this will be enough reduction to give solid acceleration.

well, to be honest, it did not get anywhere yet ..... so I can only hope it has enough power. On the other hand, I use (almost) the same motor on my longboard and that has gobs of power ...
I'm more worried about the peak current during take off from a dead stop.
Hopefully I can tell you more soon .

regards
Sebastien