Search found 45 matches

by kiwipete
May 19 2014 9:13pm
Forum: Battery Technology
Topic: Low-power no-solder idea...
Replies: 47
Views: 2887

Re: Low-power no-solder idea...

Or this: turn your smart phone into a microscope: http://www.instructables.com/id/10-Smar ... onversion/
by kiwipete
Apr 27 2014 5:54pm
Forum: Battery Technology
Topic: Samsung 25R/LG 18650HE2/ Sony VTC5 high power 18650 battery
Replies: 798
Views: 122436

Re: Samsung 25R/LG 18650HE2/ Sony VTC5 high power 18650 batt

I bought some Sony VTC4 from Fasttech.com recently. They also sell the Samsung 25R. ( http://www.fasttech.com/products/1420/10002357/1686801-authentic-samsung-inr18650-25r-3-6v-2500mah ) With regards to prices: My Sonys were quoted at $6.16 if you buy a pack of two, $5.66 if you buy 10 or more and I...
by kiwipete
Apr 07 2014 4:16pm
Forum: E-Bike General Discussion
Topic: Raged Focus Black Forest 29er MAC 10T 40A Build log!
Replies: 109
Views: 16655

Re: MAC 8T or Direct Drive?

teklektik wrote: Thanks KP! That's actually a nifty plot - where did that come from?
The elevation chart came from Mapmyride.com. They also do a nice interactive one.
by kiwipete
Apr 07 2014 1:06am
Forum: Battery Technology
Topic: Another No Solder/Weld 18650 Build (Updated 03/09/2014)
Replies: 344
Views: 61229

Re: Another No Solder/Weld 18650 Build (Updated 03/09/2014)

Ebay or whatever you have to get proper material for the foam. This battery is so tolerant of substitutions on all other materials, but the foam must be right for success. I found out since then that the NZ Post office has a service for cases like this. You get the company to send it to an NZ Post ...
by kiwipete
Apr 06 2014 5:23pm
Forum: E-Bike General Discussion
Topic: Raged Focus Black Forest 29er MAC 10T 40A Build log!
Replies: 109
Views: 16655

Re: MAC 8T or Direct Drive?

FWIW, About the hill. Its a pretty mild hill: elevation (as per pic) is about 2.3% going from left to right and its over about 850 mtrs and then its down hill anyway.
Elevation.JPG
Elevation.JPG (39.34 KiB) Viewed 751 times
by kiwipete
Mar 31 2014 4:51pm
Forum: Battery Technology
Topic: Another No Solder/Weld 18650 Build (Updated 03/09/2014)
Replies: 344
Views: 61229

Re: Another No Solder/Weld 18650 Build (Updated 03/09/2014)

One would be best off not guessing with a foam they think will or will not have safe levels of compression-set. Get the relevant compression-set % data. Ensure you crush it by more than that amount if you want it to keep your cells connected long-term. Simply checking material property datasheets a...
by kiwipete
Mar 30 2014 6:50pm
Forum: Battery Technology
Topic: Another No Solder/Weld 18650 Build (Updated 03/09/2014)
Replies: 344
Views: 61229

Re: Another No Solder/Weld 18650 Build (Updated 03/09/2014)

I looking to make one of these no solder/weld battery packs using some Sony US18650VTC4's which I have ordered and are on the way and have been looking around for the bits to make it. I have problems sourcing the Poron urethane blanket. (I'm in New Zealand). Would neoprene rubber strip work as a sub...
by kiwipete
Mar 28 2014 3:29pm
Forum: E-Bike Non-hub Motor Drives
Topic: New Bafang Crank-Drives
Replies: 4435
Views: 694516

Re: New Bafang Crank-drives

FWIW, my antivirus programme blocks this page, saying its listed as having potentially dangerous content.
by kiwipete
Mar 09 2014 6:02pm
Forum: Battery Technology
Topic: Another No Solder/Weld 18650 Build (Updated 03/09/2014)
Replies: 344
Views: 61229

Re: Another No Solder/Weld 18650 Build

I really like this design and want to have a go at this for my first battery pack build. I'm looking to build a 14S5P pack but it has to fit into a specific size bag with dimensions of a bit over 220mm x 150mm. Since the battery spacer blocks are 20mm x 20mm it makes sense to go to a config of 10 ba...
by kiwipete
Mar 03 2014 3:48am
Forum: E-Bike General Discussion
Topic: Anybody try these hills on your e-bikes?
Replies: 9
Views: 868

Re: Anybody try these hills on your e-bikes?

According to Wikipedia, the steepest residential street in the world is Baldwin Street in Dunedin , New Zealand ( http://en.wikipedia.org/wiki/Baldwin_Street ) A 50 year old bike mechanic went up it with a 300W (max legal allowed in NZ) rated bike. He was pretty stuffed aterwards, but got there.. :D...
by kiwipete
Feb 24 2014 3:49pm
Forum: E-Bike General Discussion
Topic: Will my MAC motor run Ok on 7S / ~25Volt?
Replies: 3
Views: 275

Will my MAC motor run Ok on 7S / ~25Volt?

I have a standard MAC (10T) motor and am looking to build an 18650 pack. Was going to make two 7S5P packs and run them in series so would end up with about 51.8V nominal and about 10.5AH. Then I was thinking this morning why not optionally make a harness to parallel them and run on 26V? Will the MAC...
by kiwipete
Feb 21 2014 5:24pm
Forum: E-Bike General Discussion
Topic: Question re Cycle Analyst (V2.3)
Replies: 3
Views: 359

Question re Cycle Analyst (V2.3)

I have a MTB with a standard MAC kit with the 25A 6Fet controller. I also recently purchased the Cycle Analyst V2.3 (also from cell_man) and I'm pretty happy with it. One thing doesn't seem to be working properly though: I've set the CA Max Amps to limit the amp to 15A. Yet after a ride Ive seen AMa...
by kiwipete
Feb 13 2014 12:56am
Forum: E-Bike General Discussion
Topic: New Zealand represent
Replies: 4
Views: 495

Re: New Zealand represent

I'm from Auckland, and recently converted my bike.

Got all my bits from overseas (cell_man and hobbyking for LiPo batteries) so don't know much about local suppliers, sorry.

I found that getting the stuff into NZ (including batteries) was not a problem.

BTW, nice looking scooter!

Peter.
by kiwipete
Feb 07 2014 5:42am
Forum: E-Bike General Discussion
Topic: Should an electric bicycle have a uniquely 'electric' look?
Replies: 20
Views: 1025

Re: Should an electric bicycle have a uniquely 'electric' lo

dogman wrote: One of my prime preferences is to make it too ugly to steal.
I think you have succeeded. :-)
by kiwipete
Feb 03 2014 9:40pm
Forum: Battery Technology
Topic: Whats a good reliable source for Sony US18650VTC4?
Replies: 2
Views: 488

Whats a good reliable source for Sony US18650VTC4?

Thinking about building a small 12S4P pack with them.
by kiwipete
Jan 23 2014 4:55pm
Forum: Battery Technology
Topic: my experience running LiPo on a commuter bike
Replies: 24
Views: 1734

Re: my experience running LiPo on a commuter bike

Like the OP, I run a commuter bike with a 12S 5AH little Lipo pack and have an ICharger 106B. And again like him, I like the bike and lightweight aspect of the Lipo, but not so much the "care and feeding" of the Lipo. There is the charging and all the palaver that goes with that and also of course y...
by kiwipete
Jan 22 2014 10:03pm
Forum: Battery Technology
Topic: Looking for BMS with adjustable HVC (and LVC)
Replies: 6
Views: 1173

Re: Looking for BMS with adjustable HVC (and LVC)

That smart bms comes programed, or you can buy them from a trusted european forum member set however you want. Not for the same price though, he has to program and test them, after paying just the same as us to get them. I reckon he would put some leads on though to make it plug n play if you asked...
by kiwipete
Jan 22 2014 4:54am
Forum: Battery Technology
Topic: Looking for BMS with adjustable HVC (and LVC)
Replies: 6
Views: 1173

Looking for BMS with adjustable HVC (and LVC)

I want to make my life simpler (as far as charging my little LiPo pack is concerned) and am looking for a 12S or 14S BMS that will allow me to turn the HVC down to 4.1V and increase the LVC to 3.6 or 3.65V.

Is there such a beastie?
by kiwipete
Jan 16 2014 2:59pm
Forum: E-Bike General Discussion
Topic: Ebiking is so fun its changed my life
Replies: 25
Views: 2731

Re: Ebiking is so fun its changed my life

For us old folks it makes the difference between not going up hills and doing so. Since there are fairly long upslopes to return to our house It really makes the difference between getting home after 20 miles or not. It also makes the difference between riding for a half hour and being whipped or d...
by kiwipete
Jan 16 2014 5:20am
Forum: E-Bike General Discussion
Topic: Enough juice to make it?
Replies: 27
Views: 2396

Re: Enough juice to make it?

BTW, nice bike.

As we would say in the Netherlands: a "proper" bike..
by kiwipete
Jan 10 2014 8:07pm
Forum: E-Bike Technical
Topic: Recommendations for battery and phase wire plug/socket?
Replies: 4
Views: 590

Recommendations for battery and phase wire plug/socket?

I have a little 6 FET controller (25A) and am looking to tidy up the wiring because with the current multitude of plugs and leads it resembles a big bowl of spaghetti. :-( So I'm going to take it out of its current housing and install it into an aluminium diecast box with 3 sockets mounted onto the ...
by kiwipete
Jan 08 2014 9:54pm
Forum: Battery Technology
Topic: Some questions re LiPo, bulk charging and BMS
Replies: 5
Views: 771

Some questions re LiPo, bulk charging and BMS

I have bought a standard MAC kit from Paul (cell_mann) and I’m really happy with it (not in the least as a result of the good info and help from people on this forum). My battery is a 12S Lipo pack (3 x turnigy 4s 5000mah hardcase bricks) and I am charging it with a 106B Icharger which also works fi...
by kiwipete
Dec 30 2013 7:35pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Your Creation's Before & After Pics
Replies: 1816
Views: 587078

Re: Your Creation's Before & After Pics

Don't have any pictures of before, but then again its a pretty basic commuter conversion as you can see from the after. Basic specs: - $115 (NZD) el cheapo bike from The Warehouse - bog standard MAC kit - For battery using 12s Lipo (3 x 4s Turnigy hardcase) Bought a nice camera case (went round to t...
by kiwipete
Dec 26 2013 6:56am
Forum: E-Bike General Discussion
Topic: Fitting front wheel MAC to fork - a few questions
Replies: 5
Views: 433

Re: Fitting front wheel MAC to fork - a few questions

Thanks for the advice guys. As it turned out the solution was obvious: I had bought but not yet fitted a grintech torque arm. So I looked at that a bit closer and thought "hmmm ... that has nice 4 or 5 mm thickness..." So I put the torque arm on the inside of the drop out (instead of the washers) an...
by kiwipete
Dec 25 2013 6:09am
Forum: E-Bike General Discussion
Topic: Fitting front wheel MAC to fork - a few questions
Replies: 5
Views: 433

Re: Fitting front wheel MAC to fork - a few questions

I would want at least one washer inside the forks on each side to stop the axle shoulder biting into the fork. If that fork has lawyer lips (ie originally had a quick release wheel) you need something to fill them in to give the nut a flat surface to clamp on. The torque washers won't be particular...