Search found 64 matches

by brent
Nov 28 2014 12:26am
Forum: Stand-up E-scooters and E-skateboards
Topic: 3D printed parts Depository
Replies: 178
Views: 23373

Re: 3D printed parts Depository

Sorry about not making that clearer.

I've added the models for inserts that work with the thick cored wheels to Thingiverse, you can probably just slap that into your old CAD model and it should work.
I only have a 9mm version up, though: I'll try and put a 15mm version up sometime soon.
by brent
Nov 27 2014 4:27am
Forum: Stand-up E-scooters and E-skateboards
Topic: 3D printed parts Depository
Replies: 178
Views: 23373

Re: 3D printed parts Depository

Don't remember where I got the idea for the pulley inserts but chances are I stole it from good guy Voodoo. Is anybody else having issues with the wheel running out? The pulley insert seems fine, but the entire wheel (and the pulley with it) does a sort of wobble when it spins, with a visible runout...
by brent
Nov 25 2014 4:09pm
Forum: Stand-up E-scooters and E-skateboards
Topic: 3D printed parts Depository
Replies: 178
Views: 23373

Re: 3D printed parts Depository

I don't mind you posting a "remix" or whatever; it just seemed a little weird if you were posting a duplicate, haha.
by brent
Nov 25 2014 1:39pm
Forum: Stand-up E-scooters and E-skateboards
Topic: 3D printed parts Depository
Replies: 178
Views: 23373

Re: 3D printed parts Depository

The models he posted just seem to have a straight chamfer on them to fit the wheel, so it looks like they will fit, but might have issues with the fit/flex under power due to the small surface area and the movement it allows. I will be using a 48t pulley as well, so while I am fine modelling that u...
by brent
Nov 25 2014 1:50am
Forum: Stand-up E-scooters and E-skateboards
Topic: Electrical switches for boards?
Replies: 35
Views: 3611

Re: Electrical switches for boards?

Is it the high amps or the volts that are the issue? I thought it was the high volts that cause the spark but people on here are talking about high current. I'm not the best person to explain it, but in general, higher voltage = higher current. The arcing you see is enabled by the voltage, but is o...
by brent
Nov 24 2014 2:45am
Forum: Stand-up E-scooters and E-skateboards
Topic: Electrical switches for boards?
Replies: 35
Views: 3611

Re: Electrical switches for boards?

The switch dangling from the car ESCs just turns on/off the regulator that powers the MCU, which should never draw more than a few hundred milliamps, at the very most. Should be fine for turning your board on and off regularly. Torqueboard's electronic switch (is it just a big transistor?) is cooler...
by brent
Nov 22 2014 5:11am
Forum: Stand-up E-scooters and E-skateboards
Topic: 3D printed parts Depository
Replies: 178
Views: 23373

Re: 3D printed parts Depository

Why do you want to post the file?

Also... I can't seem to a closed geometry loop from the STEP file from Vex. Hmm...
by brent
Nov 21 2014 4:38pm
Forum: Stand-up E-scooters and E-skateboards
Topic: 3D printed parts Depository
Replies: 178
Views: 23373

Re: 3D printed parts Depository

Finally found a model of a 42t HTD5 pulley from Vex Pro: do you still want a 42t version of my insert? Sorry for the lateness, it's been a bit of a rough week.
by brent
Nov 19 2014 2:08am
Forum: Stand-up E-scooters and E-skateboards
Topic: 3D printed parts Depository
Replies: 178
Views: 23373

Re: 3D printed parts Depository

Beto: do you know where I can find a 42t HTD5 pulley model? There are two listed on SDP-SI, but downloading the CAD models give me pulleys that clearly aren't HTD.

There's also the parametric pulley on Thingiverse, but going from OpenSCAD to a usable Inventor model is basically impossible..
by brent
Nov 18 2014 9:30pm
Forum: Stand-up E-scooters and E-skateboards
Topic: 10S custom skate ESC: testers wanted!
Replies: 1520
Views: 222151

Re: 10S custom skate ESC: testers wanted!

torqueboards wrote:Ouch.. How did you get it stolen? Might be a while still.. You could buy a car ESC and/or build your own.
Left it out of my sight for something like 45 seconds and it disappeared. Lesson learned, I guess.. opportunity to start fresh and improve my motor mount design, too?
by brent
Nov 18 2014 11:58am
Forum: Stand-up E-scooters and E-skateboards
Topic: 10S custom skate ESC: testers wanted!
Replies: 1520
Views: 222151

Re: 10S custom skate ESC: testers wanted!

Looking forward to that testing report!

If I'm starting a new build soon, think it's worthwhile to wait for one of these? Or assemble one myself, instead of buying a car ESC?
My board just got stolen, so I'm sort of bummed and itching to do a new build. Which I'll be more careful with, haha...
by brent
Nov 18 2014 11:49am
Forum: Stand-up E-scooters and E-skateboards
Topic: 3D printed parts Depository
Replies: 178
Views: 23373

Re: 3D printed parts Depository

Any chance you can do the 42 tooth one.. just tried it on the mount and the belt is too loose.. as it was designed for a 42 tooth version... Can't say that's a huge surprise, haha. I'll see if I can throw something together tonight. Aside from the tensioning, did it turn out alright? Maybe it's jus...
by brent
Nov 15 2014 8:35pm
Forum: Stand-up E-scooters and E-skateboards
Topic: 3D printed parts Depository
Replies: 178
Views: 23373

Re: 3D printed parts Depository

Thanks a million man...so maybe plan at some point to design the 42 , 48 nd 36 tooth pulleys? I believe they are the most common ones around. I've been pretty busy lately, but I'll see what I can do, haha. As soon as I'm done with college apps... Let me know how the 15mm pulley works out for you, t...
by brent
Nov 15 2014 12:02am
Forum: Stand-up E-scooters and E-skateboards
Topic: 3D printed parts Depository
Replies: 178
Views: 23373

Re: 3D printed parts Depository

Awesome brent Can you post the original files? Id like to change the gear to 15mm as all my setups use this thickness. Sure; does a STEP file work? Or, I could just change the belt width for you; that'd take about the same amount of time. I assume you're using Solidworks, and my CAD is all done in ...
by brent
Nov 14 2014 4:38pm
Forum: Stand-up E-scooters and E-skateboards
Topic: 3D printed parts Depository
Replies: 178
Views: 23373

Re: 3D printed parts Depository

Jumping the bandwagon:
http://www.thingiverse.com/thing:545345

Similar to Voodoojar's, but I'm using nut traps, #10 screws, and have a chamfer instead of a lip on the edge of the pulley for an easier install.
by brent
Nov 13 2014 2:54am
Forum: Stand-up E-scooters and E-skateboards
Topic: TEE_COZY'S Brushless Longboard
Replies: 75
Views: 8889

Re: TEE_COZY'S Brushless Longboard

torqueboards wrote:Not to hi-jack. I just bought a 6374 SK3 a few days ago and just received it. Came out to be 31mm bolt spacing.
sqrt(15.5 ^2 * 2) * 2 ~= 44mm; seems to be just a matter of how you measure the bolt spacing; diagonally vs perpendicularly.
by brent
Nov 11 2014 2:25am
Forum: Stand-up E-scooters and E-skateboards
Topic: Boosted Boards Offering New Models, Lowers Price of Original
Replies: 52
Views: 6817

Re: Boosted Boards Offering New Models, Lowers Price of Orig

skdoo wrote:I would love to meet up for a ride, Panama or SF :)
Curious: is Boosted based in SF or Mountain View?

I vaguely recall reading somewhere that you guys were close to the Mountain View Caltrain station ( which is remarkably close to me ), but I might be wrong.
by brent
Nov 06 2014 5:44am
Forum: Stand-up E-scooters and E-skateboards
Topic: Would this be of use
Replies: 7
Views: 890

Re: Would this be of use

@Jan Christian,: Your calculations look good but your units are janky. Voltage * Current (amps) = Power (watts) Voltage * Capacity (amp-hours) = Energy (watt-hours) - Wrote this before Jan posted: 10Ah is likely the capacity of a 1S lipo inside of it (which holds the same amount of energy as a 1.67A...
by brent
Oct 27 2014 2:10am
Forum: Stand-up E-scooters and E-skateboards
Topic: Electric Bubble Gum board mk1
Replies: 81
Views: 16854

Re: Electric Bubble Gum board mk1

https://www.bubblegumboards.com/index.p ... ucts_id=12

"Customize the Electric Bubblegum at home on you 3D printer."
I think that's a typo.
by brent
Oct 16 2014 4:13pm
Forum: Stand-up E-scooters and E-skateboards
Topic: Mounting Electronics
Replies: 5
Views: 662

Mounting Electronics

Curious: how are you guys mounting your electronics on your boards?
Drilling holes in your boards? Glue? Tape?

I had mine mounted above the board by sharing screws with the rear truck, but I'm thinking of moving the electronics to the bottom of the board.
by brent
Oct 06 2014 8:16pm
Forum: Stand-up E-scooters and E-skateboards
Topic: 10S custom skate ESC: testers wanted!
Replies: 1520
Views: 222151

Re: 10S custom skate ESC: testers wanted!

edit: looking at it now it's pretty complicated. and it actually takes quite a while. it does work though, and seems relatively accurate. if anyone has another method I would also love to know about it. SDP-SI has models of their pulleys ready for download as STEP files; I just derive the geometry ...
by brent
Sep 18 2014 2:29am
Forum: Stand-up E-scooters and E-skateboards
Topic: 3d printed Pulley (or is it gear) for Abec clones
Replies: 18
Views: 1849

Re: 3d printed Pulley (or is it gear) for Abec clones

I've had really good experience with 3D printed ABS, it's a lot less brittle than PLA. My experience is that 40~60% infill is stronger than 100% - plastic tends to shrink as it cools, and parts of your pulley will be put under uneven amounts of stress, depending on what cools first. It's less of a p...
by brent
Sep 15 2014 11:20pm
Forum: Stand-up E-scooters and E-skateboards
Topic: rs4race's E-longboard
Replies: 28
Views: 5750

Re: rs4race's E-longboard

Any problems with warping or drafts using ABS on your open-style printer? (MakerFarm i3?)

Also, somewhat unrelated: how's UW? Working on college apps right now, no idea where to apply haha...
by brent
Aug 13 2014 1:32pm
Forum: Stand-up E-scooters and E-skateboards
Topic: 6" pneumatic tyre and MBS mounts -ALIEN...
Replies: 51
Views: 9933

Re: 6" pneumatic tyre and MBS mounts -ALIEN...

Waterjetting/lasercutting can be quite a bit cheaper than CNC in medium quantities if you do it in laminations that screw together. The (built in?) pulley also isn't necessarily a super desirable feature IMO; my 3D printed ones (65% infill, acetone smoothed ABS) only costed my a couple dollars in te...