Search found 978 matches

by tostino
Nov 09 2012 4:51pm
Forum: E-Bike Technical
Topic: Tostino's water cooled 36 fet infinion
Replies: 54
Views: 6140

Re: Tostino's water cooled 36 fet infinion

Any ideas how to de-solder the fets from the board? trying to use the toaster oven on Broil now, but it doesn't seem to be working.

Here are the pics so far ='(
by tostino
Nov 09 2012 2:36pm
Forum: E-Bike Technical
Topic: Tostino's water cooled 36 fet infinion
Replies: 54
Views: 6140

Re: Tostino's water cooled 36 fet infinion

frock me... I got my motor sensor fixed (was toasted), and wanted to see if that had fixed it, so I got everything plugged in, then I connected my battery to the controller, and had flames shooting out if the box within seconds. I disconnected the battery as soon as I noticed something off, and trie...
by tostino
Nov 04 2012 11:16pm
Forum: E-Bike Technical
Topic: 2 controllers with 1 motor.. advice please..
Replies: 10
Views: 604

Re: 2 controllers with 1 motor.. advice please..

My suggestion is to break apart the phase wires in the motor into equal parts. So if they are 10 strands on each phase, break it apart into 5 strands on each output (so 6 wires coming out of the motor), and break apart the wye/delta termination, and sort the winding ends into two electrically isolat...
by tostino
Nov 03 2012 10:23pm
Forum: E-Bike Technical
Topic: Tostino's water cooled 36 fet infinion
Replies: 54
Views: 6140

Re: Tostino's water cooled 36 fet infinion

Yeah it is sensored, and that is what I assumed, i've just never had a controller refuse throttle input and not try and spin the motor, even when hall input was off.
by tostino
Nov 03 2012 9:59pm
Forum: E-Bike Technical
Topic: Tostino's water cooled 36 fet infinion
Replies: 54
Views: 6140

Re: Tostino's water cooled 36 fet infinion

Well my luck has been pretty crappy lately, tried to go on a ride today to see how everything holds up, got about a mile down the road, and the motor stopped working. I got a little shutter, and then no throttle response at all. I believe a hall sensor went bad in my motor, and it wasn't actually a ...
by tostino
Nov 02 2012 7:40am
Forum: E-Bike Technical
Topic: Tostino's water cooled 36 fet infinion
Replies: 54
Views: 6140

Re: Tostino's water cooled 36 fet infinion

Last night I had gotten in the new 120mm radiator, and a water tank. I decided to hook up the whole loop, and see how well it would keep it's cool. I had a couple extra heat blocks I had built that are the same as in the controller, and I wanted to test. I got my butane torch, and with the pump off,...
by tostino
Nov 01 2012 2:49am
Forum: E-Bike Technical
Topic: Tostino's water cooled 36 fet infinion
Replies: 54
Views: 6140

Re: Tostino's water cooled 36 fet infinion

Good stuff. What pump are you using? Whats the flow? Which way do you have your pump set up, is it a thermoswitch controlled? Any data on before and after amps temps etc.? As of right now, I have absolutely none of the water stuff set up. I had to order a smaller radiator so I could actually fit it...
by tostino
Oct 31 2012 11:45am
Forum: E-Bike Technical
Topic: Tostino's water cooled 36 fet infinion
Replies: 54
Views: 6140

Re: Tostino's water cooled 36 fet infinion

I got those caps in last night. While I was fixing the heat sink, I also soldered the caps in place. Added a total of 15.6 uH 250v caps to the board. Also decided to half my shunt resistance to .25 mohm, because they probably would have de-soldered themselves at higher power levels when it was .5 mo...
by tostino
Oct 29 2012 11:26pm
Forum: E-Bike Technical
Topic: Tostino's water cooled 36 fet infinion
Replies: 54
Views: 6140

Re: Tostino's water cooled 36 fet infinion

I did run it a little before this... maybe an hour total. I'd say it was some kind of luck.... on one hand, my old battery pack is now so shitty it can hardly put out more than 30 amps, when it used to do 120 with hardly any sag, so it's lucky that it was not able to provide enough current to even h...
by tostino
Oct 29 2012 11:11pm
Forum: E-Bike Technical
Topic: Tostino's water cooled 36 fet infinion
Replies: 54
Views: 6140

Re: Tostino's water cooled 36 fet infinion

I'm sure that was it.. There were probably small air bubbles in the tape that burst as the sinks moved against each other. Just a little unsettling. Both were room temperature when it happened, so I doubt it had to do with heating.
by tostino
Oct 29 2012 6:33pm
Forum: E-Bike Technical
Topic: Tostino's water cooled 36 fet infinion
Replies: 54
Views: 6140

Re: Tostino's water cooled 36 fet infinion

Well today was shitty... I just got home from work maybe 20 min ago, and started tightening things down. I wanted to make sure regen wasn't screwing with the dropouts. So I am on and off the throttle with the wheel in the air, hitting regen to see if the axle moves, and then I hear something pop, an...
by tostino
Oct 29 2012 9:21am
Forum: E-Bike Technical
Topic: Tostino's water cooled 36 fet infinion
Replies: 54
Views: 6140

Re: Tostino's water cooled 36 fet infinion

Got my CA hooked up yesterday, and the bike put together much better than on Saturday. The battery I was using was one of the packs I was using a couple years ago on my old recumbent bike... there are some issues to say the least. Looks like 10v voltage drop for a 25a load. Crazy bad. When these wer...
by tostino
Oct 28 2012 3:10am
Forum: E-Bike Technical
Topic: Tostino's water cooled 36 fet infinion
Replies: 54
Views: 6140

Re: Tostino's water cooled 36 fet infinion

Yeah, but I also have no cooling for the syncs at all without water. It's not connected to a metal case like most controllers, so I don't get the benefit of that. It'd be exactly like anyone else running their controller without the case. But yeah, I doubt i'll need water cooling on it at all until ...
by tostino
Oct 28 2012 12:58am
Forum: E-Bike Technical
Topic: Tostino's water cooled 36 fet infinion
Replies: 54
Views: 6140

Re: Tostino's water cooled 36 fet infinion

Well, got my wheel on the bike and trued up... had to do it myself. I used an old 14s 8ah battery pack in a backpack, so much lower voltage and C rate than what I will be using. I got all the connectors on for everything but the CA, and took it for a test spin up and down the street, and all over my...
by tostino
Oct 26 2012 3:54pm
Forum: E-Bike Technical
Topic: Uh oh. My first attempt at a controller fix.
Replies: 6
Views: 530

Re: Uh oh. My first attempt at a controller fix.

Those fets were probably screaming for their life at some points XD. I can't imagine them being very happy either being wholly, or partially un-heat synced.
by tostino
Oct 26 2012 3:12pm
Forum: E-Bike Technical
Topic: Uh oh. My first attempt at a controller fix.
Replies: 6
Views: 530

Re: Uh oh. My first attempt at a controller fix.

The fet screws are meant to be snug, but not over tight. If you over,tighten them, they will actually make less contact than having them moderately tight.

The cap coming off is pretty bad... why don't ya get some pictures of it?
by tostino
Oct 25 2012 5:54pm
Forum: E-Bike Technical
Topic: Tostino's water cooled 36 fet infinion
Replies: 54
Views: 6140

Re: Tostino's water cooled 36 fet infinion

Arlo1 wrote:Cool you should look into making the fets switch faster.
On my list of to-do's for sure. Dont really know where to start with that at the moment though.
by tostino
Oct 25 2012 2:03pm
Forum: E-Bike Technical
Topic: Tostino's water cooled 36 fet infinion
Replies: 54
Views: 6140

Re: Tostino's water cooled 36 fet infinion

Here are some pics. I went with some giant connectors for the battery... three 10g for +, and one 8g and 1 10g for -. Also soldered on connectors for the phase wires (75a anderson's). Wheel is all laced up, but untrue as can be because I can't find my damn spoke wrench. May just take it to a bike sh...
by tostino
Oct 25 2012 12:21pm
Forum: E-Bike Technical
Topic: Upgrading Lyen Controller Traces
Replies: 27
Views: 3259

Re: Upgrading Lyen Controller Traces

I agree that how I did it may not be perfect. I may go back if it doesn't work too well, and notch the bar and embed the pipe, then re-solder. All depends. The compression is pretty bulky, but managed to fit everything into the project box no problem, so it doesn't bother me. I'll have an update in ...
by tostino
Oct 25 2012 10:40am
Forum: E-Bike Technical
Topic: Upgrading Lyen Controller Traces
Replies: 27
Views: 3259

Re: Upgrading Lyen Controller Traces

I cannot imagine a situation that you would be better off using a peltier on a bike, than a more traditional cooling method. They are very very power hungry, it's not worth it even for the most high capacity bikes to waste 50-200w on lowering the temp your fets see. The effort would be better spent ...
by tostino
Oct 23 2012 1:35pm
Forum: E-Bike Technical
Topic: Tostino's water cooled 36 fet infinion
Replies: 54
Views: 6140

Re: Tostino's water cooled 36 fet infinion

Small update, I had ordered spokes and a rim, and last week I tried to lace up my motor. However, it turns out that the listed ERD of the rim was different than the actual ERD. Very fuckin' helpful. The spokes were 7mm too long. I didn't even notice until I had everything in place, and I started tig...
by tostino
Oct 22 2012 11:20am
Forum: General Discussion
Topic: Any College drop outs on ES? Care to narrate?
Replies: 63
Views: 4783

Re: Any College drop outs on ES? Care to narrate?

A little late to the party, but I wanted to share my experiences. I started taking a few classes at the local community college when I was 17. I was wanting to get a comp-sci degree. I took classes for a couple years, but my part time job did not afford me enough money to take more than a couple cla...
by tostino
Oct 03 2012 1:31pm
Forum: E-Bike Technical
Topic: How do you calculate controller resistance?
Replies: 8
Views: 703

Re: How do you calculate controller resistance?

Here is the spreadsheet I created with the controller efficiency calculations. It includes pure resistance losses, switching losses, and diode losses. It was forever ago that I created it, but I used it pretty recently to calculate the heating under different loads for the controller i'm building no...
by tostino
Oct 02 2012 12:06pm
Forum: E-Bike Technical
Topic: R/C ESCs for High Inertia Loads
Replies: 4
Views: 340

Re: R/C ESCs for High Inertia Loads

Thanks for the response. I thought there might be a ray of hope on this that I didn't see. So what we really need is some sort of R/C model to come along that has similar requirements to an ebike. I kind of doubt there will be anything close to the same requirements. The weight difference when you ...
by tostino
Oct 02 2012 8:40am
Forum: E-Bike Technical
Topic: Tostino's water cooled 36 fet infinion
Replies: 54
Views: 6140

Re: Tostino's water cooled 36 fet infinion

Thanks! I got that wired up, but i'll have to test later (about to go on vacation). So, here are the pictures: IMG_20121001_212037.jpg IMG_20121001_212324.jpg IMG_20121001_212224.jpg IMG_20121001_212240.jpg And I was looking through my closet, and I ran across this on the top shelf, all packaged up ...