SilentEnduro conversions

General Discussion about large electric scooters and motorcycles and other things with no pedals.
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SilentEnduro   10 W

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Location: Lviv, Ukraine

SilentEnduro conversions

Post by SilentEnduro » Oct 17 2019 1:18am

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Hi all, we are a group of enthusiasts from Lviv (Ukraine), working on bike conversions.
Just want to share with you our experience and discuss related topics.

So let me introduce our best conversions (for now :wink: )

EKTM
motor - QS 205, V3 T3+
controller - Kelly KLS 8430H 300A
battery - LiIon 24s 55a (4.8kWh)
top speed - 75km/h
range - 3-5h / 60-110km
peak power - 300A phase current (20-25kW)
peak torque - 189Nm * 3.15 (gear ratio) = 595Nm on the wheel
Weight - 112kg

Image

Husqvarna
motor - QS 138 70H
controller - Votol EM-150S
battery - LiIon 20s 48Ah
top speed - 95km/h
range - 3-4h / 60-100km
peak power - 150A battery current
peak torque - 56Nm * 7.28 (gear ratio) = 407Nm on the wheel
Weight ~ 110kg

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Also you might find modded Sur-Ron from us:

Controller: Kelly kls7245N
Battery: 3.5KWh 17s (NCM cells)
Suspension: Marzocchi Monster 2T
Marzocchi Bomber Coil C2R + 500lbs
Brakes: Avid Code
Wheels 21"x1.6 / 19"x1.8
Reduction drive changed to chain and sprockets (DID O-ring)
Rear sprocket: Luna 54T
Engine guard: Luna
Aluminium handlebar
Custom made steel link
Mx foot pegs

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all other conversions and videos can be found at our FB and youtube pages (links in signature)

You are welcome to ask questions and we are glad to start conversation with such a great community.

thoroughbred   100 W

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Re: SilentEnduro conversions

Post by thoroughbred » Oct 17 2019 6:17am

Fantastic first post!

KTM: What cells are you using? How is the throttle response with that controller?

Surron: How much does it weigh? What cells are you using? Steel link for the shock linkage?

:thumb: :thumb: :thumb: :thumb:

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SilentEnduro   10 W

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Location: Lviv, Ukraine

Re: SilentEnduro conversions

Post by SilentEnduro » Oct 17 2019 6:53am

thoroughbred wrote:
Oct 17 2019 6:17am
Fantastic first post!

KTM: What cells are you using? How is the throttle response with that controller?

Surron: How much does it weigh? What cells are you using? Steel link for the shock linkage?

:thumb: :thumb: :thumb: :thumb:
Thanks!
in KTM we used NCM 55Ah, like this:
Image

As for throttle response, you know, it might be better but with Magura it's ok, you just have to get used to it.

Sur-Ron weigh is like 65kg, same cells NCM 55Ah.
And yes, steel link for the shock linkage, cause stock has been cracked.

Grantmac   10 kW

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Re: SilentEnduro conversions

Post by Grantmac » Oct 17 2019 11:45am

Does the steel linkage raise the back at all?

Those are amazing conversions, especially like the Husky.

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SilentEnduro   10 W

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Location: Lviv, Ukraine

Re: SilentEnduro conversions

Post by SilentEnduro » Oct 20 2019 11:07am

Grantmac wrote:
Oct 17 2019 11:45am
Does the steel linkage raise the back at all?
nope, the same as in stock

c70r   10 W

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Re: SilentEnduro conversions

Post by c70r » Oct 21 2019 7:09pm

What happened to the #emaha? Was an amazing looking bike. Has everything been moved to what is now the Husqvarna as I see the same motor/controller and battery.

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SilentEnduro   10 W

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Location: Lviv, Ukraine

Re: SilentEnduro conversions

Post by SilentEnduro » Oct 23 2019 1:33am

c70r wrote:
Oct 21 2019 7:09pm
What happened to the #emaha? Was an amazing looking bike. Has everything been moved to what is now the Husqvarna as I see the same motor/controller and battery.
#emaha is still alive, riding our local spots with happy new owner =)

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KWS Seuren   10 mW

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Re: SilentEnduro conversions

Post by KWS Seuren » Oct 25 2019 7:52am

SilentEnduro wrote:
Oct 17 2019 6:53am
thoroughbred wrote:
Oct 17 2019 6:17am
Fantastic first post!

KTM: What cells are you using? How is the throttle response with that controller?

Surron: How much does it weigh? What cells are you using? Steel link for the shock linkage?

:thumb: :thumb: :thumb: :thumb:
Thanks!
in KTM we used NCM 55Ah, like this:
Image

As for throttle response, you know, it might be better but with Magura it's ok, you just have to get used to it.

Sur-Ron weigh is like 65kg, same cells NCM 55Ah.
And yes, steel link for the shock linkage, cause stock has been cracked.

Hello,
Your projects are looking great!

Where do you get your NCM 55Ah cells from? and what current can they handle? Charge and discharge?

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DanGT86   10 kW

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Re: SilentEnduro conversions

Post by DanGT86 » Oct 26 2019 10:05pm

Nice builds! What are your impressions of the QS 138 70 motor on that Husqvarna? How is the riding experience compared to the original gas motor?

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SilentEnduro   10 W

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Location: Lviv, Ukraine

Re: SilentEnduro conversions

Post by SilentEnduro » Nov 08 2019 1:55pm

KWS Seuren wrote:
Oct 25 2019 7:52am
Hello,
Your projects are looking great!

Where do you get your NCM 55Ah cells from? and what current can they handle? Charge and discharge?
Hello, thanks!
Cells from China, we have local supplier for cells.

DanGT86 wrote:
Oct 26 2019 10:05pm
Nice builds! What are your impressions of the QS 138 70 motor on that Husqvarna? How is the riding experience compared to the original gas motor?
Thanks, Let us bring 21\18" to that Husqvarna and then we can answer :)
For now it goes not worse than 125cc

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SilentEnduro   10 W

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Re: SilentEnduro conversions

Post by SilentEnduro » Nov 19 2019 8:13am

a bit upgrade for sur-ron, cause Monster could not stand it))
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thoroughbred   100 W

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Re: SilentEnduro conversions

Post by thoroughbred » Nov 19 2019 10:44am

I love those forks! If you are ever in Washington DC, I will take you riding 8)
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SilentEnduro   10 W

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Re: SilentEnduro conversions

Post by SilentEnduro » Nov 24 2019 12:10pm

New build folks!
KTM 125 EXC :flame:
QS 138 70H motor
Votol EM-150 controller
22s 55Ah battery
Magura throttle
https://youtu.be/eDP8pV54EdY
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ZERONEST   10 W

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Re: SilentEnduro conversions

Post by ZERONEST » Nov 24 2019 12:32pm

too cool! I wanna throw a qs 138 in my cr125 now! :lol:

shawn1   1 µW

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Re: SilentEnduro conversions

Post by shawn1 » Nov 25 2019 4:04am

Super neat conversion indeed! :thumb:

SilentEnduro, how's the qs138 70h (105kg exc) vs qs205 50h (112kg sx) in terms of torque and overheating in this application? Is ca. 400 Nm enough to let you guys lift the front wheel over logs when needed? I mean it's over 105 kg after all. Wheelies possible? 8)

wjr   10 W

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Re: SilentEnduro conversions

Post by wjr » Nov 26 2019 3:10pm

:bigthumb:

In the Votol-Thread, you mention a 2-stage transmission.
How did you make that?
Do you think that this high ratio is required?
obviously, if you even want to use a larger rear sprocket?

I'm going to convert an old KL 250, using a QS 138 with Votol 150, and I'd like to try it single stage.

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macribs   1.21 GW

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Re: SilentEnduro conversions

Post by macribs » Nov 27 2019 2:11pm

Very cool bikes and builds. Too bad I don't understand the language in those videos. It would have been cool to hear all the details about the choice of motor, batteries, controllers and what ever else you did modify, replace or swap out. Your english is good, any chance you can do "voice over versions" with english spoken language? Both for the sur ron, husqarna and ktm video, pls?

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SilentEnduro   10 W

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Location: Lviv, Ukraine

Re: SilentEnduro conversions

Post by SilentEnduro » Nov 29 2019 3:17am

shawn1 wrote:
Nov 25 2019 4:04am
Super neat conversion indeed! :thumb:

SilentEnduro, how's the qs138 70h (105kg exc) vs qs205 50h (112kg sx) in terms of torque and overheating in this application? Is ca. 400 Nm enough to let you guys lift the front wheel over logs when needed? I mean it's over 105 kg after all. Wheelies possible? 8)
205 still have better torque, but you need to keep in mind that there is a custom cover for 205 with 15t sprocket.
Wheelies are hardly possible on 138, however on 205 bike can ride away without you if you open full throttle.

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SilentEnduro   10 W

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Location: Lviv, Ukraine

Re: SilentEnduro conversions

Post by SilentEnduro » Nov 29 2019 3:21am

wjr wrote:
Nov 26 2019 3:10pm
:bigthumb:

In the Votol-Thread, you mention a 2-stage transmission.
How did you make that?
Do you think that this high ratio is required?
obviously, if you even want to use a larger rear sprocket?

I'm going to convert an old KL 250, using a QS 138 with Votol 150, and I'd like to try it single stage.
here is how 2-step reduction is made:
reduction.jpg
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Tried large rear sprocket for Emaha, 75t is ok for 16", but for 18"-19" I doubt it.
However we have plans to try 138 with 13/75 and 18", a bit later.

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SilentEnduro   10 W

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Location: Lviv, Ukraine

Re: SilentEnduro conversions

Post by SilentEnduro » Nov 29 2019 3:22am

macribs wrote:
Nov 27 2019 2:11pm
Very cool bikes and builds. Too bad I don't understand the language in those videos. It would have been cool to hear all the details about the choice of motor, batteries, controllers and what ever else you did modify, replace or swap out. Your english is good, any chance you can do "voice over versions" with english spoken language? Both for the sur ron, husqarna and ktm video, pls?
for now we made subtitles for most needed videos, later we will try spoken english :)

wjr   10 W

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Re: SilentEnduro conversions

Post by wjr » Nov 29 2019 4:29am

SilentEnduro wrote:
Nov 29 2019 3:21am
here is how 2-step reduction is made:
reduction.jpg
Tried large rear sprocket

Thanks for the image :)
Looks like an elegant, lightweight solution.
You have good lathe including operator in your team :thumb: ?

Have you tried smaller front sprockets?
Could make live much easier.
Why do you still use the genuine 14T there.

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macribs   1.21 GW

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Re: SilentEnduro conversions

Post by macribs » Nov 29 2019 1:42pm

SilentEnduro wrote:
Nov 29 2019 3:22am
macribs wrote:
Nov 27 2019 2:11pm
Very cool bikes and builds. Too bad I don't understand the language in those videos. It would have been cool to hear all the details about the choice of motor, batteries, controllers and what ever else you did modify, replace or swap out. Your english is good, any chance you can do "voice over versions" with english spoken language? Both for the sur ron, husqarna and ktm video, pls?
for now we made subtitles for most needed videos, later we will try spoken english :)
Nice! I look forward to that. I will look one more time, I didn't notice you had subtitles. Maybe I watched an old video or had subs turned off.

litespeed   100 kW

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Re: SilentEnduro conversions

Post by litespeed » Dec 01 2019 10:57am

Nice builds.

Tom
I'm married so you know I'm no stranger to pain!

Karolis   10 W

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Re: SilentEnduro conversions

Post by Karolis » Dec 05 2019 10:36am

Something is not add up for EKTM with 205.
No way it can go 75km/h top speed.

24s = 24x4,2V = ~100V
with 3T+, kv=14,31
at 100V this motor spins 100x14,31=1431rpm. With reduction 3,15 wheel spins 1431/3,15=454rpm.
The wheel size 18" with tyre. C=2PiR. C=2x3,14x0,3m=1,88m (~1,9)
Distance coveret in meters per minute 454x1,9=862m. Per hour 862x60=51756m.
Speed in km/h 51756/1000m=51,7km/h. This is free wheel spining in air speed.

I did this calculation because i have similiar setup.
Exept my motor is 3T-, kv=17,7 reduction ratio ~1,6
At 24S Life ~80V with 18" tyre my speed is 78km/h measured with GPS.
According to my calculation for my setup free wheel speed is 100km/h.
I am vey disapointed with my setup.

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SilentEnduro   10 W

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Re: SilentEnduro conversions

Post by SilentEnduro » Dec 23 2019 3:15pm

hi all, sorry for not being here for a while... new builds...
Karolis wrote:
Dec 05 2019 10:36am
Something is not add up for EKTM with 205.
No way it can go 75km/h top speed
on EKTM 205 have 17kv, spedtest is possible but... it will be hard to ride road))))) I'll try
wjr wrote:
Nov 29 2019 4:29am
Have you tried smaller front sprockets?
...
Why do you still use the genuine 14T there.
no need in smaller sprocket, cause it wears out faster
it's custom modeled sprocket, it fits stock conus shaft


p.s. stay tuned, new builds soon \m/

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