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Cutman
Starting Member
Easter WA
USA
4 Posts |
 Posted - 07/28/2010 : 01:03:22
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Brand new to electic scooters. We recently moved from 25 miles out in the country to 7 min (by car) to work. I am right near the bike path that goes right by my job. I found a couple schwinn 1000s on CL but sellers want just under what the sold for new. I read for two days on here (this site) and have found that I can take a lower end model (e400), wear out the stock drive train, and upgrade to 36/1000 for less than the used schwinn on CL. I can buy a new e400 from walmart for $199. I am thinking of picking two up on Thursday. I have two kids and one wouldn't work. Although, the plan is get enought batteries to get me to work... that is where I will need your help. I am very mechanical (build cars and custom bicycles) but never jumped into the "battery pool" before. I know little on the electrical side of things (unless house or vehicle wiring). What is the best way to increase the range on the stand up scooter?
Thanks for all the info already absorbed...
Rob
Here are a couple things I've built... not EV but fabrication:
one man's cool is another man's... why? |
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Uncle D
Journeyman Modder
Kailua Kona
H
USA
483 Posts |
Posted - 07/28/2010 : 01:50:31
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Nice customs!
What is the estimated distance and terrain of that bike path. Either way, if you can afford it, lithiums will net the best overall performance.
Something like this.
http://www.pingbattery.com/servlet/the-10/36V-20AH-V2.5-LiFePO4/Detail
Thave a 48V version pack as well if you wanted to overvolt the 36V/1000W. There's also some sellers of similar packs on ebay as well.
You can look into LiPo, LiFe, or Li-ion. All those would do awesome in comparison to SLA. You could do it with SLA, but they just weigh a lot and take up much space. Still doable though.
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Cutman
Starting Member
Easter WA
USA
4 Posts |
Posted - 07/28/2010 : 08:23:57
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From what I gather from the reading on here... overvolting is simply using a higher volt battery pack and controller with the motor originally came with. Example: Stock 24v/400w motor, upgrading to 36v with the 400w motor. I assume this gives you more top speed but will it increase your range at all? Just trying to wrap my head around the terminology. Had looked but missed this the first time through the site: http://www.modifiedelectricscooters.com/forum/topic.asp?TOPIC_ID=146
Unc's diagram speaks volumes to me.
thanks,
Rob
one man's cool is another man's... why? |
Edited by - Cutman on 07/28/2010 08:29:41 |
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gameboy
Administrator
just north of austin
tx
USA
1464 Posts |
Posted - 07/28/2010 : 09:42:42
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quote:
Originally posted by Cutman
From what I gather from the reading on here... overvolting... gives you more top speed but will it increase your range at all?
welcome to the site, we will try to help as much as we can.
you are correct in your assumtion that overvolting does NOT give you more distance, it only give speed and power (torque).
if you want more distance you need a larger battery pack. i.e. going from a 7ah pack to a 14 ah pack or a 12ah pack to a 24ah pack. also, lipo's are a pretty good deal ( if you can find them on sale) from what i have gathered is they have 3 x the battery charge life, 3x the range and 3x lighter than a set of comparable sla style batteries, but they also cost 3x the amount of sla's too. so if your willing to go with a lipo they are great, but you get more bang for your "low end" buck with sla. i have to go cheap, i dont have the money for lipo's yet, but one day i hope to get there, but i think the cost will have to come down.
one more note, if you do any battery swap you can NOT mix old batteries with new batteries. they have to start out as a pack and stay as a pack for peak battery performance. but if your testing or just need to get up and running, you can, of course, do what you need to do, but dont expect the batts to last long and expect to do a little trouble shooting when one of the batts in the pack goes dead and causes the others to drop in performance. not saying its a bad thing to mix, i understand thats what people do sometimes and its not dangerous, but you just dont get the life you would expect out of them and sometimes things happen.
let us know if you need more help.
btw, are you a FF too and where? |
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Uncle D
Journeyman Modder
Kailua Kona
H
USA
483 Posts |
Posted - 07/28/2010 : 13:35:11
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Someone else on here said this, and I thought it made sense, but then again I don't know what all occurs when overvolting in terms of power consumption. Anyways, they suggested that while your runtime may end up being the same or little shorter, you actually get to your destination quicker. So in theory, if you were getting same runtime as when you were running the setup in stock form as you are now getting overvolted, you are probably getting more distance as you are covering more ground with the overvolting speed.
I just thought that was a cool way to look at it.
And you're welcome Cutman.
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Newbie in the mix
