Search found 1181 matches

by alsmith
Jul 27 2015 9:25am
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4549
Views: 817282

Re: Cycle Analyst V3 preview and first beta release

Justin - the *.hex file was already in the same directory as the executable. After doing a bit more testing, I'm beginning to think the real culprit is my WinXP Pro installation/configuration on the (Toshiba Satellite) laptop I'm using. If I double-click on the *.hex file in the file manager listin...
by alsmith
Jul 20 2015 6:34pm
Forum: E-Bike General Discussion
Topic: how about this for rear wheel torque arms? & disc conversion
Replies: 5
Views: 973

how about this for rear wheel torque arms? & disc conversion

I was wandering on the web looking for what's around for converting to disc brakes from v-brakes when I found something or interest (see below) but has anyone found anything interesting re brake conversion - mine is front drive. A fork set may be the best option - or a new bike. Anyhow re-purposing ...
by alsmith
Jul 20 2015 11:43am
Forum: E-Bike Technical
Topic: Definitive Tests on the Heating and Cooling of Hub Motors
Replies: 2101
Views: 396340

Re: Definitive Tests on the Heating and Cooling of Hub Motor

I think the limiting factor here isn't just the internal heat flow of whichever method of cooling is used, it's the interface that passes the heat into the surrounding environment. An analogy would be a motorbike engine where both systems can be found. Both work but if the engine doesn't get adequat...
by alsmith
Jul 20 2015 11:13am
Forum: E-Bike Build Threads / Photos & Video
Topic: 2WD Electric Yuba Mundo Build
Replies: 212
Views: 90863

Re: 2WD Electric Yuba Mundo Build

I'd bought some of those bad fuse holders but luckily I'd read the warnings before fitting them. I still haven't sourced any replacements but think I'll be looking for the re-settable type first- I can see the fuse blowing when I'm out and the spares can't be found.
by alsmith
Jul 17 2015 7:29am
Forum: Battery Technology
Topic: Wiring conventions 101
Replies: 5
Views: 589

Re: Wiring conventions 101

All good stuff. One of the reasons I'm asking is that my first bike was a UK legal brushed motor so had some torque but not much speed. The ignition switch melted shorting the motor on- not nice with a lower powered bike but much worse if something happens with 6 times the battery power.
by alsmith
Jul 14 2015 1:17pm
Forum: Battery Technology
Topic: Wiring conventions 101
Replies: 5
Views: 589

Re: Wiring conventions 101

Thanks. I have 75A Andersons on the phase wires (polarised as you say), using blue , green , and yellow housings. I think I've settled on XT150's for the batteries with red and black housings. (two batteries- either 36V 30Ah or 72V 15Ah ) - that's where I've seen the sparks in the past. I chose thes...
by alsmith
Jul 14 2015 10:31am
Forum: Battery Technology
Topic: Wiring conventions 101
Replies: 5
Views: 589

Wiring conventions 101

I'll soon be rewiring my bike and I've looked for conventions used for connectors etc. but haven't really found anything. I realise that it won't have any real detrimental effect on my individual bike but it makes sense to follow any conventions as far as possible. Many connectors have a male pin an...
by alsmith
Jul 12 2015 4:57pm
Forum: E-Bike General Discussion
Topic: torque arms / fixing in angular position
Replies: 14
Views: 1724

Re: torque arms / fixing in angular position

Yes, C washers fitted. the tongue is not a problem.
by alsmith
Jul 12 2015 6:15am
Forum: E-Bike Technical
Topic: XPD: open-source keywin e-bike lab replacement
Replies: 607
Views: 162639

Re: XPD: open-source keywin e-bike lab replacement

My first looks would be the simple stuff: 1 Is the controller set on the right mode - there are 2 possibilities for the speed mode. One is converse, I can't remember the other name used. One is a 3 speed mode needing a 3 way switch , the other is 2 speeds but needs a temporary make switch. 2 The swi...
by alsmith
Jul 11 2015 10:58am
Forum: E-Bike General Discussion
Topic: torque arms / fixing in angular position
Replies: 14
Views: 1724

Re: torque arms / fixing in angular position

No regen- it wasn't really enough of a gain to be worth the extra reverse stresses. I don't think its a shitty torque arm- it's still in good condition and the movement didn't damage the arm. The problem is the bolt. brazing shouldn't be an issue - most stainless steel types, with the exception of t...
by alsmith
Jul 11 2015 10:49am
Forum: Battery Technology
Topic: Big spark when connecting battery to bike
Replies: 77
Views: 16009

Re: Big spark when connecting battery to bike

Does anyone know what type of resistor is it that's used on the Hobbyking type of connector? And how are they constructed? They are neat so modifying might be an option.
by alsmith
Jul 09 2015 3:42pm
Forum: E-Bike General Discussion
Topic: torque arms / fixing in angular position
Replies: 14
Views: 1724

Re: torque arms / fixing in angular position

Saddly it did rotate spreading the flats on the forks a little. It was caused by the bolt backing off a little so allowing some movement.
by alsmith
Jul 09 2015 3:32pm
Forum: Battery Technology
Topic: Big spark when connecting battery to bike
Replies: 77
Views: 16009

Re: Big spark when connecting battery to bike

I bought the anti-spark connectors from Hobbyking= 2 sets in the pack. These are 5.8Ω
7mm AS150 Anti Spark Self Insulating Gold Bullet Connector (2 Pairs)
by alsmith
Jul 08 2015 1:09pm
Forum: E-Bike General Discussion
Topic: torque arms / fixing in angular position
Replies: 14
Views: 1724

Re: torque arms / fixing in angular position

Yep-all good but that single M6 bolt. I think I'm going to look try silver solder to fix that joint in place so it can't rotate or move- it melts at a lower temperature than a brazing rod, the fairly small size of the 2 arms will help to make sure it gets hot enough to solder with a good joint, and ...
by alsmith
Jul 07 2015 4:54pm
Forum: E-Bike General Discussion
Topic: torque arms / fixing in angular position
Replies: 14
Views: 1724

Re: torque arms / fixing in angular position

Maybe I was a little unclear- I don't mean fixing to the frame, only that central pivotable (is that a word?) joint. Mine is fixed to a plate welded to the forks and bolted very solidly with two bolts. The motor is a Crystalyte X5 so uses the larger 14mm axle and it is a closed profile slot. There's...
by alsmith
Jul 06 2015 3:14am
Forum: E-Bike General Discussion
Topic: torque arms / fixing in angular position
Replies: 14
Views: 1724

torque arms / fixing in angular position

A lot torque arms are of a 2 part construction with one part fixed to the frame or fork and the other part onto the axle with the only thing fixing them in position is a single fairly small diameter bolt which has always seemed a bit of a weakpoint to me. Once you've used the flexibility of this sys...
by alsmith
Jun 30 2015 11:11am
Forum: E-Bike Technical
Topic: EBike Toolbox - Bargains! $
Replies: 146
Views: 60260

Re: EBike Toolbox - Bargains! $

It' a very low discharge so I very much doubt there'll be any issues. I do have separate batteries for heavier draw items such as the Cree lights.
by alsmith
Jun 24 2015 8:39am
Forum: E-Bike Technical
Topic: EBike Toolbox - Bargains! $
Replies: 146
Views: 60260

Re: EBike Toolbox - Bargains! $

I've started in a similar direction but I'm tapping ~12V from 4 of the LiFePO4 cells in my battery pack for low load items (alarm).
by alsmith
Jun 22 2015 7:38am
Forum: E-Bike Technical
Topic: EBike Toolbox - Bargains! $
Replies: 146
Views: 60260

Re: EBike Toolbox - Bargains! $

I don't know if anyone is interested in the portable air pump but I came across a branded version of it on ebay - it seems a bit expensive but it's really useful and still going strong but possibly there are other brands out there : http://www.ebay.co.uk/itm/Rothenberger-1-9022-Battery-Powered-Cordl...
by alsmith
Jun 17 2015 5:16pm
Forum: E-Bike General Discussion
Topic: What's a good e bike headlight?
Replies: 250
Views: 30296

Re: What's a good e bike headlight?

Thanks .
It's like the designers don't use the lights , don't cycle , and don't ask cyclists what they want .
by alsmith
Jun 16 2015 8:32pm
Forum: E-Bike General Discussion
Topic: What throttle? Thumb or twist?
Replies: 43
Views: 3581

Re: What throttle? Thumb or twist?

I use one of those paddle type things on the the throttle which really helps to relieve the aches . Prices are low now- about 1 uk pound here. That thumb throttle is the first time I've seen work on that axis, most work around the bar and I find them uncomfortable . http://i1120.photobucket.com/albu...
by alsmith
Jun 16 2015 8:00pm
Forum: E-Bike General Discussion
Topic: What's a good e bike headlight?
Replies: 250
Views: 30296

Re: What's a good e bike headlight?

What would be useful with these lights is a two way switch (or two switches ) so you can go up or down in brightness as needed rather than have to cycle through all of the levels in one direction until you get to the one you want .
by alsmith
Jun 15 2015 2:23am
Forum: E-Bike General Discussion
Topic: Crystalyte 5300 wiring questions .
Replies: 14
Views: 1168

Re: Crystalyte 5300 wiring questions .

Thanks-- I'll order them!
by alsmith
Jun 14 2015 1:48am
Forum: E-Bike General Discussion
Topic: Crystalyte 5300 wiring questions .
Replies: 14
Views: 1168

Re: Crystalyte 5300 wiring questions .

No worries- I now know what to look for. I'll send a message asking if there's a less expensive way he can use.
by alsmith
Jun 13 2015 9:21pm
Forum: E-Bike General Discussion
Topic: Crystalyte 5300 wiring questions .
Replies: 14
Views: 1168

Re: Crystalyte 5300 wiring questions .

Thanks. I hadn't thought of the staggering but that'll help reduce the cost by allowing the use of one color cable- no wasted cut offs. Those Teflon cables come out too expensive because of shipping price to the UK - Shipping: $47.00 USPS Priority Mail International btw just putting an order togethe...