Search found 132 matches

by corim123
Mar 22 2014 8:24pm
Forum: E-Bike Technical
Topic: LCD screen
Replies: 112
Views: 17376

Re: LCD screen

Yep I'm a moron. Needs to be in parallel like any other voltmeter. Forgot because I'd initially planned on using another meter that had amps and had to be wired in circuit.
by corim123
Mar 21 2014 5:38pm
Forum: E-Bike Technical
Topic: LCD screen
Replies: 112
Views: 17376

LCD screen

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by corim123
Mar 21 2014 5:37pm
Forum: E-Bike Technical
Topic: LCD screen
Replies: 112
Views: 17376

LCD screen

Mostly just needed confirmation on the speed wire. Am I supposed to wire this up in line? I have it going battery pos>to controller>controller negative>positive LCD>negative LCD going back to the negative of the battery. The problem is m voltage drops to 43v from 50v when the controller is added to ...
by corim123
Mar 19 2014 9:08pm
Forum: E-Bike Technical
Topic: LCD screen
Replies: 112
Views: 17376

Re: LCD screen

Does anybody have info on which wire does what? Don't want to short anything out by connecting things up incorrectly. I really only want to use the speed function and have little use for the other features these things have.
ImageUploadedByTapatalk1395281302.798928.jpg
ImageUploadedByTapatalk1395281302.798928.jpg (109.64 KiB) Viewed 2665 times
by corim123
Aug 19 2013 7:25pm
Forum: E-Bike Technical
Topic: A Probably Stupid Question About Lacing
Replies: 22
Views: 1093

Re: A Probably Stupid Question About Lacing

Not in this situation. They're 15mm too short when cross and radially they're probably 5 mm or so too long.
by corim123
Aug 19 2013 3:08pm
Forum: E-Bike Technical
Topic: A Probably Stupid Question About Lacing
Replies: 22
Views: 1093

Re: A Probably Stupid Question About Lacing

Got back to looking at this to true it and the spikes seem way too long to work. I could probably file a little bit but I think waiting and ordering new spokes would be much stronger due to the reduced number of threads if I file.
by corim123
Aug 18 2013 12:08am
Forum: E-Bike Technical
Topic: LCD screen
Replies: 112
Views: 17376

Re: LCD screen

Anybody have photos of it working yet? :)
by corim123
Aug 16 2013 9:55pm
Forum: E-Bike Technical
Topic: A Probably Stupid Question About Lacing
Replies: 22
Views: 1093

Re: A Probably Stupid Question About Lacing

Managed to get it laced radially. Had to put the heads on the inside of the flange as outside they were too long. Now it seems about a perfect fit. Will work on truing it tomorrow to see. Seems fairly sturdy but I'm imagining ill have to be careful about hard starts and using a lot of torque. http:/...
by corim123
Aug 16 2013 7:10pm
Forum: E-Bike Technical
Topic: A Probably Stupid Question About Lacing
Replies: 22
Views: 1093

Re: A Probably Stupid Question About Lacing

Radial is safe on a 26" wheel at 1000w? I seriously considered it but it didn't seem like it would be strong enough for sure.
by corim123
Aug 16 2013 2:08pm
Forum: E-Bike Technical
Topic: A Probably Stupid Question About Lacing
Replies: 22
Views: 1093

Re: A Probably Stupid Question About Lacing

They're about 15mm too short according to the shop. Looks like ill be calling Dan soon
by corim123
Aug 16 2013 10:20am
Forum: E-Bike Technical
Topic: LCD screen
Replies: 112
Views: 17376

Re: LCD screen

Lol I bought one last night too. This looks like a nice, cheap CA alternative. Certainly not the same but it ought to work for my needs until I can financially justify a CA
by corim123
Aug 14 2013 7:22pm
Forum: E-Bike Technical
Topic: A Probably Stupid Question About Lacing
Replies: 22
Views: 1093

Re: A Probably Stupid Question About Lacing

Measured and confirmed with the spokes I had. For the holes, I gently filed just a little to make them fit. I'm just going to take this bad boy to the bike shop tomorrow since ill probably need new spokes anyway.
by corim123
Aug 14 2013 5:50pm
Forum: E-Bike Technical
Topic: A Probably Stupid Question About Lacing
Replies: 22
Views: 1093

Re: A Probably Stupid Question About Lacing

Well, I can't even get the 4th one to tighten down at all. Guess that would indicate they are too short?
by corim123
Aug 14 2013 3:00pm
Forum: E-Bike Technical
Topic: A Probably Stupid Question About Lacing
Replies: 22
Views: 1093

Re: A Probably Stupid Question About Lacing

Thanks! I had a feeling the Sheldon Wheelbuilding tutorial had a reason for being like that. Some other tutorial had suggested doing them like this but I was going to try it one spoke at a time like you said this evening. Hopefully it'll all look better when I do things like that. Going to leave the...
by corim123
Aug 14 2013 2:09pm
Forum: E-Bike Technical
Topic: A Probably Stupid Question About Lacing
Replies: 22
Views: 1093

Re: A Probably Stupid Question About Lacing

It could be one of two things. The nipple's are a long thin threaded body that gets bigger at one end in incorporate a seat. The body should not be tight in the hole. The hole is bigger but the seat still can't pull through. This way the nipple can sit at various angles in the rim, and the seat is ...
by corim123
Aug 14 2013 12:42pm
Forum: E-Bike Technical
Topic: A Probably Stupid Question About Lacing
Replies: 22
Views: 1093

Re: A Probably Stupid Question About Lacing

I'm only threading a couple turns to make it fit. And the valve hole is good. I'll make sure I'm doing it right as far as the parallelogramism. I've tried reconfiguring things a few different ways so its possible I'm doing it completely backwards at this point. I'll post some better photos this even...
by corim123
Aug 14 2013 11:03am
Forum: E-Bike Technical
Topic: LCD screen
Replies: 112
Views: 17376

Re: LCD screen

I'm not 100% sure but it sounds like it. Let me know how well that thing works! Looks awesome and cost about what I paid for my wattmeter.
by corim123
Aug 14 2013 10:54am
Forum: E-Bike Technical
Topic: A Probably Stupid Question About Lacing
Replies: 22
Views: 1093

A Probably Stupid Question About Lacing

So I got my rim and motor in the past couple days and set about lacing it last night. After seeing ypedals video, I realized I needed to bore out my rim holes just a little to fit these new spokes. So now all the nipples rest in their holes easily but I can only get about halfway around before there...
by corim123
Aug 13 2013 8:47am
Forum: Battery Technology
Topic: Desoldering a fet, what am I doing wrong?
Replies: 7
Views: 565

Re: Desoldering a fet, what am I doing wrong?

You need to solder that ASAP! Only take a second and will stop you having to replace it again.
by corim123
Aug 12 2013 2:31pm
Forum: Items for Sale - New
Topic: Doc's ULTIMATE TORQUE ARMS fit most of the frame UPDATE 2013
Replies: 584
Views: 109685

Re: Doc's ULTIMATE TORQUE ARMS fit most of the frame UPDATE

I want to say there's testing somewhere but I couldn't seem to find exactly what you're looking for either. Feel like it could also be calculated based on the thickness and type of steel. But I can't say for sure.
by corim123
Aug 12 2013 1:39pm
Forum: Battery Technology
Topic: Battery Capacity vs Voltage
Replies: 0
Views: 218

Battery Capacity vs Voltage

I know this has been discussed on this forum myriad times but finding this site made things very clear for me a while back. http://www.powerstream.com/lithuim-ion-charge-voltage.htm Gives one an idea of capacity and shows the effects of charging to these voltages so you can more easily decide what b...
by corim123
Aug 11 2013 10:59am
Forum: Items for Sale - New
Topic: Doc's ULTIMATE TORQUE ARMS fit most of the frame UPDATE 2013
Replies: 584
Views: 109685

Re: Doc's ULTIMATE TORQUE ARMS fit most of the frame UPDATE

He's got another batch coming soon so you'll have to wait a little while
by corim123
Aug 09 2013 4:19pm
Forum: E-Bike Technical
Topic: "LiPO", another "be careful" warning...
Replies: 54
Views: 4757

Re: "LiPO", another "be careful" warning...

The physics is that oxygen is released and that's what burns - its extremely flamable. Pouch cells can puff and the seams can fail, releasing the oxygen. Once the burn begins, it self-sustains until there's no oxygen left. Cylindrical cells are less likely to see a failure in the casing. At least t...
by corim123
Aug 09 2013 12:36pm
Forum: Battery Technology
Topic: 48 volt lifepo4 battery cutting out prematurely
Replies: 61
Views: 2369

Re: 48 volt lifepo4 battery cutting out prematurely

4.25 is pretty high. I personally dislike exceeding 4.1v per cell and usually stop between 4 and 4.1 and never go below 3.5v if possible with lithium batteries.
by corim123
Aug 09 2013 12:35pm
Forum: E-Bike Technical
Topic: "LiPO", another "be careful" warning...
Replies: 54
Views: 4757

Re: "LiPO", another "be careful" warning...

The pouches are the only batteries I've seen do this. After a lot of RC vehicles, I've seen quite a few and this is a pretty typical response to hard abuse. Particularly serious shorts or anything that pierces through/a hard drop. I always keep pouch batteries outside as the plume of smoke is severe...