EX street tire question

[Erwin P]

Well that makes live a bit harder to make something fit.

 

[Julo EX]

Thanks for the info! I’ll probably go with the Karoo 4, they seem like great 50/50 tires. Later on, once I’ve saved up, I plan to get the Warp 9 kit for a supermoto build.

I also have another question: can I use a 14T or 15T front sprocket from the MX 1.2 on the EX to improve top speed and cruise comfortably at 80–90 km/h with lower RPM for better range? Would a 14/48 setup be enough, or would 15/48 be too tall and cause me to lose too much acceleration? For reference, I have the 60 hp version.

 

[Erwin P]

With the 15 it's still bloody fast in acceleration as well. On 60 hp it will still backflip from a standstill with 15-48.
You can use the KTM/Beta sprockets as well as those from all Starks. Mind you, the speedo will give a wrong reading.

 

[Julo EX]

Alright thanks, and there is no way to change the speedo reading ?

 

[Karinshi]

I remember this conversation coming up years ago. Things might have changed since...
On average an SM 17 was between 0.5 and 1.5kg heavier than the equivalent sport bike 17. Tubeless SMs, more so.
Ultimately, for me, it's about aesthetics. I want my bike to stand out a bit.

nice, if you know some good looking sport bike wheels that will fit the Varg i will be happy to see them, feel free to share, maybe i do the same

 

[Karinshi]

Alright thanks, and there is no way to change the speedo reading ?

at the moment i dont think so... the APP should have the conversion feature, it just an easy matemathical thing... one guy in this forum build a pretty good APP by himself and has that feature so Stark should be able to do it

EX Custom iOS/Android App

Thank you brongle for awesome work! I tested it out on iPhone, works really well on iOS. Nice to see the diagnostics information. I'm wondering would you be willing to share the BT protocol? I'd like to create simple ESP32 thingy with a small screen. It would need only the gear and state of...

electricdirtriders.com

 

[Karinshi]

Thanks for the info! I’ll probably go with the Karoo 4, they seem like great 50/50 tires. Later on, once I’ve saved up, I plan to get the Warp 9 kit for a supermoto build.

I also have another question: can I use a 14T or 15T front sprocket from the MX 1.2 on the EX to improve top speed and cruise comfortably at 80–90 km/h with lower RPM for better range? Would a 14/48 setup be enough, or would 15/48 be too tall and cause me to lose too much acceleration? For reference, I have the 60 hp version.

dude, i have the 60hp version too, and i have the 14t front with 48 rear, it has pleeeeenty of power, you dont loose anything jajaja i have the 14 from the MX because on the EX site there is only the 12t... im not sure if the 15 will fit because my 14 is literally 1mm away from touching the chain guide

 

[Julo EX]

I'll get the 14 then ! Thanks man

 

[Erwin P]

dude, i have the 60hp version too, and i have the 14t front with 48 rear, it has pleeeeenty of power, you dont loose anything jajaja i have the 14 from the MX because on the EX site there is only the 12t... im not sure if the 15 will fit because my 14 is literally 1mm away from touching the chain guide

15 does fit on the MX.

 

[Lost]

Alright thanks, and there is no way to change the speedo reading ?

I've probably missed something...
Do you mean kph to mph or correct the reading for tooth differences?

 

[Erwin P]

Correct the reading for different sprockets.

 

[Karinshi]

the guy who develop his own APP for the varg kept that in mind, he called it "gear ratio" and that was very smart

 

[Karinshi]

15 does fit on the MX.

it seems that the EX has less space between the center of the sprocket and the chain guide, because my 14t it's so close that I can't see a space between them with my naked eye but somehow is not touching it, a 15 will definitely touch in my case, 1tooth is noticeable bigger believe ir or not

 

[Lost]

Correct the reading for different sprockets.

Oh got you.
It's a bit of a work around but, download a GPS speedo app onto the AS like I did when I added Waze.

 

[Karinshi]

it seems that the EX has less space between the center of the sprocket and the chain guide, because my 14t it's so close that I can't see a space between them with my naked eye but somehow is not touching it, a 15 will definitely touch in my case, 1tooth is noticeable bigger believe ir or not

15T could touch on the EX, is noticeable bigger even with only 1 more tooth

 

[Erwin P]

It only touches fot the first km

 

[DaveAusNor]

yea a 15 fits no problem on my EX. I like the 14 just fine tho.

 

[TheJ0rma]

I run 15/44 gearing on my supermoto setup and it fits fine. I wonder if the upcoming SM model has different reduction gearing as the EX runs out of rpm pretty quickly on larger asphalt tracks and it won't easily fit much longer gearing.

 

[DaveAusNor]

I'd be less worried about getting more speed out of the bike with changes to gearing, it can already make 170kph+ with 15/45 gearing. But at those speeds the battery is draining fast and the powertrain is overheating. I think these are issues best solved on the street version in their roadmap.

 

[TheJ0rma]

I'd be less worried about getting more speed out of the bike with changes to gearing, it can already make 170kph+ with 15/45 gearing. But at those speeds the battery is draining fast and the powertrain is overheating. I think these are issues best solved on the street version in their roadmap.

With 17" wheel and 15/44 gears the EX tops out at 165 km/h. The cooling runs out of capacity really quickly and needs to be improved for the SM and other road models