jonescg's E-max 110s lithium conversion

General Discussion about large electric scooters and motorcycles and other things with no pedals.
whereswally606   100 kW

100 kW
Posts: 1134
Joined: Jun 19 2011 2:11pm
Location: Cheshire, UK

Re: jonescg's E-max 110s lithium conversion

Post by whereswally606 » Jul 22 2016 7:21am

did you ever get chance to get that DVT file off your scooter controller?
Distributing "Lebowski" FOC Controller PCB (Through hole) since 2016
Moped: Emax 110s 2009

User avatar
jonescg   1.21 GW

1.21 GW
Posts: 3649
Joined: Aug 07 2009 9:22pm
Location: Perth, Western Australia

Re: jonescg's E-max 110s lithium conversion

Post by jonescg » Jul 22 2016 7:27am

Nah, my friend has the laptop with the software and dongle-cord thingy. I might try and get him to email the file to me if possible.

whereswally606   100 kW

100 kW
Posts: 1134
Joined: Jun 19 2011 2:11pm
Location: Cheshire, UK

Re: jonescg's E-max 110s lithium conversion

Post by whereswally606 » Jul 23 2016 2:56am

Thanks jonescg

Sent from my ALE-L02 using Tapatalk
Distributing "Lebowski" FOC Controller PCB (Through hole) since 2016
Moped: Emax 110s 2009

User avatar
jonescg   1.21 GW

1.21 GW
Posts: 3649
Joined: Aug 07 2009 9:22pm
Location: Perth, Western Australia

Re: jonescg's E-max 110s lithium conversion

Post by jonescg » Jul 24 2016 7:34pm

I've PM'd you the dcf file. Hopefully you can upload the settings!

Cheers,
Chris

whereswally606   100 kW

100 kW
Posts: 1134
Joined: Jun 19 2011 2:11pm
Location: Cheshire, UK

Re: jonescg's E-max 110s lithium conversion

Post by whereswally606 » Jul 25 2016 6:04am

file received thanks Chris. Will be a while before I get any result with this but I have a plan.
Distributing "Lebowski" FOC Controller PCB (Through hole) since 2016
Moped: Emax 110s 2009

DarylMc   100 mW

100 mW
Posts: 40
Joined: May 02 2012 7:35pm
Location: Brisbane QLD

Re: jonescg's E-max 110s lithium conversion

Post by DarylMc » Jul 29 2017 10:35pm

Hi everyone
I just got a used VMoto 110S.
My first electric vehicle project.
Many thanks to Chris Jones for his help so far.

Thread is here
https://endless-sphere.com/forums/viewt ... 10&t=89788
Last edited by DarylMc on Jul 30 2017 3:48pm, edited 1 time in total.

User avatar
jonescg   1.21 GW

1.21 GW
Posts: 3649
Joined: Aug 07 2009 9:22pm
Location: Perth, Western Australia

Re: jonescg's E-max 110s lithium conversion

Post by jonescg » Jul 30 2017 2:28am

Hi Daryl,
Might be easier to start your own thread; there's a few E-max 110S threads here now.

DarylMc   100 mW

100 mW
Posts: 40
Joined: May 02 2012 7:35pm
Location: Brisbane QLD

Re: jonescg's E-max 110s lithium conversion

Post by DarylMc » Jul 30 2017 3:48pm

Thanks Chris
Done.

User avatar
jonescg   1.21 GW

1.21 GW
Posts: 3649
Joined: Aug 07 2009 9:22pm
Location: Perth, Western Australia

Re: jonescg's E-max 110s lithium conversion

Post by jonescg » Sep 05 2017 8:23am

10,000 km and going strong. GBS LiFePO4 is pretty solid stuff for longevity.
20170905_195623.jpg
20170905_195623.jpg (153.04 KiB) Viewed 2400 times

Rube   100 W

100 W
Posts: 251
Joined: Jun 25 2016 10:18pm
Location: Brisbane, Australia

Re: jonescg's E-max 110s lithium conversion

Post by Rube » Sep 06 2017 4:38am

Cool rig, I've been looking at getting an electric scooter to replace the second car.
No idea about makes and models, I'll need to do a bit of research.

DarylMc   100 mW

100 mW
Posts: 40
Joined: May 02 2012 7:35pm
Location: Brisbane QLD

Re: jonescg's E-max 110s lithium conversion

Post by DarylMc » Sep 06 2017 7:07am

Hello Rube
I bought an EMax recently with help from Chris.
I'm in Brisbane and I am thinking of selling it.
It has no batteries and I just don't think I have the time to get it all going.
You are welcome to come and have a look if you are interested.

User avatar
jonescg   1.21 GW

1.21 GW
Posts: 3649
Joined: Aug 07 2009 9:22pm
Location: Perth, Western Australia

Re: jonescg's E-max 110s lithium conversion

Post by jonescg » Nov 06 2017 4:00am

So after 11,000 km the scooter suffered a failure.

My wife took the bike to work one morning and after about 1 km it suddenly felt very heavy and unresponsive to steer. She nursed it home and took the car. I had a look at it, suspecting a flat tyre but to my horror, the lower steering head bearing race was slopping around :shock:
20171102_080327.jpg
20171102_080327.jpg (188.13 KiB) Viewed 2280 times
So it appears that the headstock was machined to accommodate the bearing race, but with about 2 mm of metal to hold it in place! I tried tightening it but it simply refused to stay put. After every ride up the road it would kick out, increasing the trail to the point where it was completely unresponsive to input. So I put a jack under the bike, lifted the front wheel up and gave the race a whack with a hammer. It seemed to be centrally located so the next step was to weld it up. I'm sure I accidentally welded the bearing race to the headstock, but whatever, I don't want it coming off again.
Repair headstock.jpg
Repair headstock.jpg (166.6 KiB) Viewed 2280 times
Stick welding FTW.

Now it feels much better, but still less responsive than it used to be. I suspect it will just take some getting used to. If it still drives me nuts I can always pull the forks through the clamps and shorten the trail that way. Back on the road at least. Batteries are doing just fine.

whereswally606   100 kW

100 kW
Posts: 1134
Joined: Jun 19 2011 2:11pm
Location: Cheshire, UK

Re: jonescg's E-max 110s lithium conversion

Post by whereswally606 » Nov 06 2017 4:22am

:shock: wtf... will be a bit more wary when getting mine to go quicker now.
Distributing "Lebowski" FOC Controller PCB (Through hole) since 2016
Moped: Emax 110s 2009

DarylMc   100 mW

100 mW
Posts: 40
Joined: May 02 2012 7:35pm
Location: Brisbane QLD

Re: jonescg's E-max 110s lithium conversion

Post by DarylMc » Nov 06 2017 4:30am

Thanks for the tip Chris.
I might give mine a check and perhaps some loctite.

User avatar
jonescg   1.21 GW

1.21 GW
Posts: 3649
Joined: Aug 07 2009 9:22pm
Location: Perth, Western Australia

Re: jonescg's E-max 110s lithium conversion

Post by jonescg » Nov 06 2017 7:00am

Yeah, if you guys don't mind checking, I'd love to see a photo of what it looks like when its not broken.
I'm trying to work out if it was just weak to begin with, or if it was just tacked in place with a couple of lousy welds...

Either way, it's certainly something you should keep an eye on. I suspect it was just poor design, and they never suspected that 90 kg fatties like me would ride it flat out everywhere I go, for 11,000+ km

DarylMc   100 mW

100 mW
Posts: 40
Joined: May 02 2012 7:35pm
Location: Brisbane QLD

Re: jonescg's E-max 110s lithium conversion

Post by DarylMc » Nov 06 2017 7:42am

20171106_123615563_iOS.jpg
20171106_123615563_iOS.jpg (96.38 KiB) Viewed 2267 times

DarylMc   100 mW

100 mW
Posts: 40
Joined: May 02 2012 7:35pm
Location: Brisbane QLD

Re: jonescg's E-max 110s lithium conversion

Post by DarylMc » Nov 06 2017 7:43am

I don't think you should be riding it like that Chris.
Do you reckon yours just had a cup inserted in the frame tube?
The cup and or the frame tube must be really flogged out if it moves enough to alter the fork angle.

User avatar
jonescg   1.21 GW

1.21 GW
Posts: 3649
Joined: Aug 07 2009 9:22pm
Location: Perth, Western Australia

Re: jonescg's E-max 110s lithium conversion

Post by jonescg » Nov 06 2017 6:28pm

Yikes!
It's worse than flogged out, it broke off!
The welds will hold it in place for now. But yeah it sure seems like this bike won't get the 30,000 km I was hoping for.

User avatar
ecross   1 kW

1 kW
Posts: 321
Joined: Jun 11 2011 2:09pm
Location: Munich

Re: jonescg's E-max 110s lithium conversion

Post by ecross » Oct 12 2018 2:52am

Hi Chris,
I have a question regarding the emax.
The older emax scooters are now here inexpensive, like from +600 Euro, so a build with 18650 cells are interesting.
How many place is into the emax for a new battery? Do you think a fast version with 72V is possible and make sense?
BR
ecross
NC 2805 mod.
H4080 mod.
4504 mod.
4503 mod. with watercooling
LiIon 24S16P from Sony, Sanyo, Panasonic
Siemens 2000W travel charger

whereswally606   100 kW

100 kW
Posts: 1134
Joined: Jun 19 2011 2:11pm
Location: Cheshire, UK

Re: jonescg's E-max 110s lithium conversion

Post by whereswally606 » Oct 12 2018 4:42am

Here is a sketchup8 (free version got to oldversion.com) file to help visualise what you can do with the older emax frame. I have one on ebay now if you want to bid on it. it is only at £82 so far.
calb pack.jpg
calb pack.jpg (120.84 KiB) Viewed 1269 times
emaxBatteryMockups.zip
(1.25 MiB) Downloaded 39 times
ignore the batteries on racks that was my poor mans power wall.
Distributing "Lebowski" FOC Controller PCB (Through hole) since 2016
Moped: Emax 110s 2009

User avatar
jonescg   1.21 GW

1.21 GW
Posts: 3649
Joined: Aug 07 2009 9:22pm
Location: Perth, Western Australia

Re: jonescg's E-max 110s lithium conversion

Post by jonescg » Oct 12 2018 6:31am

In my honest opinion, find 60 Ah of the most garden variety LiFePO4 and use that. Any more than 3 kWh is a waste - the scooter is not much fun to ride long distances anyway. I spent about $1600 on a new battery for my scooter, so that's good value. I can't begin to thing of how sore my bum would be after more than 65 km of riding...

whereswally606   100 kW

100 kW
Posts: 1134
Joined: Jun 19 2011 2:11pm
Location: Cheshire, UK

Re: jonescg's E-max 110s lithium conversion

Post by whereswally606 » Oct 12 2018 8:55am

as luck would have it I bought 60ah calb blue cells and put them in my scooter I bought 26s from Latvia and kept the parcel case. I would have to look into how much they would be to post to you. looking for about £600 for the lot. currently 16s are in my emax 90s as I never got round to changing out the controller so I could use the remaining 10. Let me know if you want to do a deal.

reason for selling is that I now have two babies and don't get time to ride the scooter.

you can see the ones in the sketchup file I am talking about. And how the 16s fit in the bottom of the scooter. The extra 10 should fit in the near the steering column
Distributing "Lebowski" FOC Controller PCB (Through hole) since 2016
Moped: Emax 110s 2009

Post Reply