DarylMc EMAX 110S battery

General Discussion about large electric scooters and motorcycles and other things with no pedals.
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DarylMc   100 mW

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

DarylMc EMAX 110S battery

Post by DarylMc » Jul 30 2017 1:42pm

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

It has no batteries at this stage.
I'm looking at doing 16S of these 75AH cells.
http://www.szwestart.com/ProductView.asp?ID=1086
67.2V max
They are a bit tall but I think I can get creative with the holders or not use holders and make them fit.
Quite a compact setup otherwise and only going to take up about half the battery box.

I would like to get some idea from people who are familiar with the scooter about the weight balance.
Would you put them to the front or to the back?

Because they are so much lighter than the original lead cells I am prepared that I may have to change springs.
I want to get the batteries in the best place before I go doing that.
My previous experience with scooters is that a lot of the weight is on the back wheel so I reckon they should go forward.

Because they are going to be a fairly tight fit I want to decide where they are going before I start.

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jonescg   1.21 GW

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Re: DarylMc EMAX 110S battery

Post by jonescg » Jul 30 2017 8:11pm

Can you upload some pictures Daryl?

I reckon the 75 Ah ones will fit, but as you say, you might need to leave the holders off. To be honest I don't think they do much in terms of battery integrity - you could probably devise your own compression system which is a little more compact.

DarylMc   100 mW

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

Re: DarylMc EMAX 110S battery

Post by DarylMc » Jul 30 2017 10:31pm

Hi Chris
This is the only pic I have now.
At this stage I am still just measuring it up but I also want to consider how to secure them into the battery compartment.
Do you have any thoughts on keeping the batteries right towards the front as far as weight distribution goes?
Attachments
EMAX.jpg
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jonescg   1.21 GW

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Re: DarylMc EMAX 110S battery

Post by jonescg » Jul 31 2017 3:11am

If anything you might want some weight over the back - once you take the lead out the bike sits quite high and the suspension is quite hard.

DarylMc   100 mW

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

Re: DarylMc EMAX 110S battery

Post by DarylMc » Jul 31 2017 3:33am

I was worried you might say that since I had my mind set otherwise :)
I read the back is way too hard so I had in mind I might have to to change the rear spring.
The front feels quite firm too with no batteries.
I'm a fair bit heavier than you.
Do you think the rear spring will be OK or still too stiff with me and lighter cells?

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jonescg   1.21 GW

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

Re: DarylMc EMAX 110S battery

Post by jonescg » Jul 31 2017 3:48am

I'm 90 kg, so I'm probably a good match with the scooter :oops:

I've not changed my spring rate or anything. Just left it as is.

DarylMc   100 mW

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

Re: DarylMc EMAX 110S battery

Post by DarylMc » Jul 31 2017 3:57am

Thanks for the info.
With my extra weight I will look to put them to the back based on that.
All scooters I know have rear weight bias.

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