Locks Dray Build

Lightweight / Folding / Portable EVs - seats optional
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Lock   10 GW

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Locks Dray Build

Post by Lock » Jun 08 2010 3:43pm

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sk8norcal   100 MW

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Re: Locks Dray Build

Post by sk8norcal » Jun 09 2010 12:07am

xootr wheel ?

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Lock   10 GW

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Re: Locks Dray Build

Post by Lock » Jun 09 2010 6:44am

Hey, I *wanted* to use an inline skate blade! :lol:
...but they're not designed with slush and snow in mind... so this is a compromise back wheel... `cause Xootr claims this:
Image

Also, although Xootr doesn't mention this, I expect fewer flat tires :)

Front wheel for now is a cast 16" DD Crystalyte hub, nominal 600W. Had thoughts to change this up to geared, but now leaning towards chucking a front hub all together in favour of an outrunner with chain and sprockets...

*Finally* assembling this thing in August, so thought I'd start posting some pics...
Cheers
LoCk
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Ykick   100 GW

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Re: Locks Dray Build

Post by Ykick » Jun 09 2010 7:40am

They're great for minimum rolling resistance but the thing that happned to my xootr wheel(s) is if you hit a piece of gravel it will often take out a chunk of rubber. It doesn't go flat though...
Talent must not be wasted.... Those who have talent must hug it, embrace it, nurture it and share it lest it be taken away from you as fast as it was loaned to you.

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Lock   10 GW

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Re: Locks Dray Build

Post by Lock » Jun 09 2010 8:21am

Ykick wrote:...if you hit a piece of gravel it will often take out a chunk of rubber.
Good to know, thanks. I did buy a spare... :)

Also will be investigating "re-treading"... Otta at least be able to repair/fill any "dings". Stuff like this maybe:
http://www.hairdirect.com/store/Poly-Re ... .aspx#Tabs

or this:
http://www.crosslinktech.com/Repair%20C ... %20055.pdf

tks
loC
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Ykick   100 GW

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Re: Locks Dray Build

Post by Ykick » Jun 09 2010 8:53am

Good idea for repair, 'never thought of that but should work? My wheels still worked fine just had some chunks out of 'em here and there. Spare is good though!

Hub motors are so simple - I can't imagine ever going back to more complicated drive systems. I'm up to around 2K miles on my Sidewalker - all I do to it is check spokes, air the 20" tires and adjust the brakes every once in a while.
Talent must not be wasted.... Those who have talent must hug it, embrace it, nurture it and share it lest it be taken away from you as fast as it was loaned to you.

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Re: Locks Dray Build

Post by maydaverave » Jun 18 2010 1:40am

Lock, you said you have a hub motor on a currie scooter. Can you give us some information on it or a link to a thread about it. I can't seem to find one.
e-bikekit 50v 9.2ah cellman pack

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Re: Locks Dray Build

Post by swbluto » Jun 18 2010 1:47am

Ykick wrote:Good idea for repair, 'never thought of that but should work? My wheels still worked fine just had some chunks out of 'em here and there. Spare is good though!

Hub motors are so simple - I can't imagine ever going back to more complicated drive systems. I'm up to around 2K miles on my Sidewalker - all I do to it is check spokes, air the 20" tires and adjust the brakes every once in a while.
You can't ever imagine going back until you get to a bike and then you want "INSANE performance". :)

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Lock   10 GW

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Re: Locks Dray Build

Post by Lock » Jun 18 2010 5:35am

maydaverave wrote:Lock, you said you have a hub motor on a currie scooter. Can you give us some information on it or a link to a thread about it. I can't seem to find one.
Hi maydaverave... A hub now, but not on a Currie... I only had the usual Currie motors on the Currie scoots, the last one modified with an external controller at 36V. I picked up a 600W 16" cast Chrystalyte hub a while back and am putting this in a new scoot design with the hub in front. Not convinced the hub is best versus a RC and chain and sprockets, but gotta try.
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Lock   10 GW

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Got two of these today

Post by Lock » Jul 05 2010 5:15pm

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Re: Locks Dray Build

Post by maydaverave » Jul 05 2010 10:06pm

What the heck is that?
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only1jake   10 W

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Re: Locks Dray Build

Post by only1jake » Jul 05 2010 10:53pm

If it is what I think it is... It goes in between the cells and warms them up, I believe.
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Lock   10 GW

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Re: Locks Dray Build

Post by Lock » Jul 05 2010 11:03pm

Intended for car starter batts... Rated 35W at 120V AC but also good for 14W plugged directly into a 48V DC pack...
Just to take the chill offa LiFePO4 cells in the winter times...
:)
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only1jake   10 W

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Re: Locks Dray Build

Post by only1jake » Jul 06 2010 1:09am

That would be pretty useful for warming up the cells in winter. Where'd you get them from? Thanks!
Jake Saunders

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Lock   10 GW

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Re: Locks Dray Build

Post by Lock » Jul 06 2010 5:08am

only1jake wrote:That would be pretty useful for warming up the cells in winter. Where'd you get them from? Thanks!
Here:
http://endless-sphere.com/forums/viewto ... =0#p225497

...if I understand things correctly, it's really about having good insulation. Thinsulate or aerogel... Partly depends too on how hard yer exercising the cells as with high C rates they'll make a little heat of their own. Thought I might have a thermostat to automate heating but for now will just go with a switch.

tks
loCk
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Lock   10 GW

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Re: Locks Dray Build

Post by Lock » Jul 06 2010 7:38am

BTW, I don't know of any other ES'ers using active heating for their cells but one concern would be even heating so the cells are not "out of balance" thermally. I have sixteen of the Headway 10A cells arranged as one long physical "string" side by side, and two of the Farnam pads happen to fit exactly under the length of the pack, plus they really are throwing off a tiny amount of heat anyway. So I hope this heating won't affect the pack/any individual cells over the long term. The cells are labelled so I'll be able to test each of them from time to time...

The Farnam pads are really nothing fancy (the price might be a clue.) Three layers of some sort of thin material and around the middle layer of this sandwich are wound the thin heater wires... nickel-chrome I guess. No different than the way toaster elements are arranged... Having seen these things now, I'll guess it wouldn't be hard to fab something DIY from an old toaster...

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Re: Locks Dray Build

Post by only1jake » Jul 06 2010 7:45am

Yeah. That's what I was thinking too. What if some of the cells get more heat... does this affect discharge rate etc etc.
I'll wait and see how yours turns out. Any feedback on what happens would be great!

Jake

EDIT: My 100th post lol
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Lock   10 GW

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Re: Locks Dray Build

Post by Lock » Jul 06 2010 9:41am

Tony at Voltfreaks is a sweetheart! Back in May I ordered ONE single cell LiFePO4 charger:
https://p10.secure.hostingprod.com/@www ... ucts_id=28
Image

...and `cause Tony was out of stock I said no problem I can wait `til August and Tony said he would include a second charger free for the "inconvenience"...

So today they arrive and there are THREE chargers. Wish he had a larger product selection as I'd buy something else from him just to say THANKS TONY!

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Lock   10 GW

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Re: Locks Dray Build

Post by Lock » Jul 06 2010 9:57am

only1jake wrote:Yeah. That's what I was thinking too. What if some of the cells get more heat... does this affect discharge rate etc etc.
I'll wait and see how yours turns out. Any feedback on what happens would be great!
Jake
EDIT: My 100th post lol
Congrats on 100th :)

Dunno watt you NZ guyz are worried about low temps for `less you are in Queenstown or something :lol:

Hope I see NZ before I die but I would head straight to the Bay of Islands as I understand the sailing is pretty fabulous there
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Re: Locks Dray Build

Post by only1jake » Jul 06 2010 3:11pm

Not that it would be that cold here... I would just like to get the most out of the batteries!
Not sure about the islands as I haven't been there either.
Thats pretty awesome... You ordered 1 and you got three :D
Jake
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Re: Locks Dray Build

Post by moostrodamus » Jul 06 2010 7:00pm

I note a couple of volt drop at the end of my commute with my Ping 48v 20ah on cold mornings that i don't see when it warms up....very cool...i mean very warm!

Maybe for I should git one...

Moo
Commuter: Crystalyte HS3540
Infineon 40 amp controller
Ping V2.5 48v 20ah

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Lock   10 GW

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Re: Locks Dray Build

Post by Lock » Jul 28 2010 8:54pm

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Lock   10 GW

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Re: Locks Dray Build

Post by Lock » Jul 28 2010 8:56pm

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Schwalbe Big Apple 50-305 (16x2)

Post by Lock » Jul 29 2010 6:21am

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Lock   10 GW

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Re: Locks Dray Build

Post by Lock » Jul 29 2010 6:36am

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