Search found 491 matches

by Murfix
Sep 03, 2014 12:55 am
Forum: Stand-up E-scooters and E-skateboards
Topic: My finished electric skateboard
Replies: 10
Views: 1378

Re: My finished electric skateboard

Congratz on making the Instructables newsletter! =)

You're in my mailbox as well as in a kazillion others'!
by Murfix
Aug 28, 2014 12:10 am
Forum: Stand-up E-scooters and E-skateboards
Topic: Hall sensored setup: does it work properly?
Replies: 7
Views: 459

Re: Hall sensored setup: does it work properly?

Well the magic is definitely in the ESC since the sensors are just ... sensors. Yes, I'm using 50mm motors (dual rear). Maybe even more important than starting smoothly is doing a full stop much better. With Hall sensors, the brakes can be controlled much more efficiently as well. I'm investigating ...
by Murfix
Aug 27, 2014 12:29 am
Forum: Stand-up E-scooters and E-skateboards
Topic: Hall sensored setup: does it work properly?
Replies: 7
Views: 459

Hall sensored setup: does it work properly?

Hey guys,

Who is using a sensored setup and likes its performance?

I find mine disappointing. It doesn't seem to run any smoother than my regular setup. I was at least expecting for it to start from standstill in a smooth way.

Am I using bad components, or is this the case for everyone?
by Murfix
Jul 31, 2014 2:33 am
Forum: Items for Sale - New
Topic: Murfix's durable bolt on motor mounts ;-)
Replies: 18
Views: 2852

Re: Murfix's durable bolt on motor mounts ;-)

Nice work. Are those 180mm or 195mm trucks? You should counterbore those bolt holes that way the pulley doesn't run into them if you have the hub end out. They're 180mm trucks. The bolts should be fine like this and counterboring would make the mount weaker, but I'll keep it as an option if really ...
by Murfix
Jul 29, 2014 11:46 am
Forum: Stand-up E-scooters and E-skateboards
Topic: Circular clamp motor mount
Replies: 12
Views: 1967

Re: Circular clamp motor mount

I'm trying to build an electric longboard and I have a pair of 180mm paris v2 trucks on it. I'm wondering if anyone has a CAD file of a clamp type motor mount for circular trucks that they'd be willing to share so I don't have to re-invent the wheel. Thanks! I just updated my thread with some detai...
by Murfix
Jul 29, 2014 11:32 am
Forum: Items for Sale - New
Topic: Murfix's durable bolt on motor mounts ;-)
Replies: 18
Views: 2852

Re: Murfix's durable bolt on motor mounts ;-)

Hey guys, I've been on a holiday lately, but here are finally some pics of the 50mm motor mount! The first pic shows the 50mm and 63mm motor mounts next to each other. They both fit MTB skate trucks and Paris trucks and any other truck with approx 18mm diameter hanger axle. I got a few extra, so I'm...
by Murfix
Jul 28, 2014 4:26 am
Forum: Stand-up E-scooters and E-skateboards
Topic: Circular clamp motor mount
Replies: 12
Views: 1967

Re: Circular clamp motor mount

Heya,

Yes I do! I've been on a holiday, but now I'm back. I got 2 versions of the clamping mount, for 50mm and 63mm motors, to make them as small and light as possible. They fit mountainboard's regular skate trucks AND Paris trucks. I will take some pictures this evening to show you.
by Murfix
Jun 26, 2014 9:05 am
Forum: Stand-up E-scooters and E-skateboards
Topic: from push scooter to EV: advice and comments welcome!
Replies: 46
Views: 10957

Re: from push scooter to EV: advice and comments welcome!

Congrats, those pieces look awesome, especially the large pulley! Where's that Hall sensor you're talking about? Is it used to measure the position of the thumb throttle? About the spring: maybe it's worth testing to see if you can use the same spring? By changing the standard tension on the spring,...
by Murfix
Jun 20, 2014 7:12 am
Forum: Stand-up E-scooters and E-skateboards
Topic: Drevious' E-Longboard
Replies: 62
Views: 6992

Re: Drevious' E-Longboard

Looking awesome!!

Why did you decide to go for chains? Did the belt underperform?
by Murfix
Jun 17, 2014 4:33 pm
Forum: Stand-up E-scooters and E-skateboards
Topic: GalWiii - software/hardware for controlling e-boards
Replies: 16
Views: 910

Re: GalWiii - software/hardware for controlling e-boards

Dude, go for it! This would be really welcome for European ES'ers since shipping costs are still a pain for small packages over the seas. If you need help testing/sourcing/programming, I'd be happy to. I just got me an Arduino Uno and finished the 15 starter projects :D Trying to get into µcontroll...
by Murfix
Jun 17, 2014 3:27 am
Forum: Items for Sale - New
Topic: Murfix's durable bolt on motor mounts ;-)
Replies: 18
Views: 2852

Re: Murfix's durable bolt on motor mounts ;-)

Some more information: I've been updating the designs according to everyone's input, for which I am very grateful! Because precision is very important, I have designed 2 different motor mounts. 1 for 63mm and 1 for 50mm motors. ATTENTION: I don't have the dimensions of all brushless DC 50mm and 63mm...
by Murfix
Jun 17, 2014 1:34 am
Forum: Stand-up E-scooters and E-skateboards
Topic: GalWiii - software/hardware for controlling e-boards
Replies: 16
Views: 910

Re: GalWiii - software/hardware for controlling e-boards

Dude, go for it! This would be really welcome for European ES'ers since shipping costs are still a pain for small packages over the seas. If you need help testing/sourcing/programming, I'd be happy to. I just got me an Arduino Uno and finished the 15 starter projects :D Trying to get into µcontrolle...
by Murfix
Jun 17, 2014 12:45 am
Forum: Items for Sale - New
Topic: Murfix's durable bolt on motor mounts ;-)
Replies: 18
Views: 2852

Re: Murfix's durable bolt on motor mounts ;-)

Hey what is the thickness of the mount? Also, will these be sold in the United States? Looks good so far! Heya. The thickness is 8mm (about 1/3"). This is super strong. The reason that it isn't thinner is because of the tapped holes in the side for the clamping bolts. I am looking into making some ...
by Murfix
Jun 16, 2014 11:17 am
Forum: Items for Sale - New
Topic: Murfix's durable bolt on motor mounts ;-)
Replies: 18
Views: 2852

Re: Murfix's durable bolt on motor mounts ;-)

Thanks, I added me-on-the-mounts in the first post =D
by Murfix
Jun 16, 2014 3:56 am
Forum: Stand-up E-scooters and E-skateboards
Topic: Roadster E-Board Build (videos added 15/06/14)
Replies: 159
Views: 35802

Re: Roadster E-Board Build (videos added 15/06/14)

Haha yeah, gotta make the most of the summer in the UK! I know it's not the nicest at all. I'm still to have a proper play with the ESC settings, don't think I have any timing adjustment but I can change the acceleration curve. Think I should have the curve start shallow or steep? :? Hard to tell. ...
by Murfix
Jun 16, 2014 2:23 am
Forum: Stand-up E-scooters and E-skateboards
Topic: It's not electric, not got wheels - but cool as hell!!
Replies: 6
Views: 516

Re: It's not electric, not got wheels - but cool as hell!!

Run this on batteries and you're a billionaire =D

Awesome thing!
by Murfix
Jun 16, 2014 2:17 am
Forum: Stand-up E-scooters and E-skateboards
Topic: Implementing regenerative braking on electric longboard
Replies: 27
Views: 5301

Re: Implementing regenerative braking on electric longboard

I hope you have also read my rectification of that post, because it was actually wrong. However, I think regen braking might be a useful addon, I haven't tested it yet and I can't tell you how to integrate it. I suggest looking up some documentation about ESC's that claim to have the regen braking o...
by Murfix
Jun 15, 2014 4:20 pm
Forum: Items for Sale - New
Topic: Murfix's durable bolt on motor mounts ;-)
Replies: 18
Views: 2852

Re: Murfix's durable bolt on motor mounts ;-)

For matrix trucks? If you mean these, then no, sorry, they won't fit: https://www.google.be/search?q=matrix+trucks&newwindow=1&espv=2&es_sm=93&source=lnms&tbm=isch&sa=X&ei=yw2eU8Jow6M73OSB8AQ&ved=0CAgQ_AUoAQ&biw=1680&bih=906#facrc=_&imgdii=_&imgrc=WG_dMTbK9iZEsM%253A%3B1IHsvr5d-pZ99M%3Bhttp%253A%25...
by Murfix
Jun 15, 2014 3:58 pm
Forum: Items for Sale - New
Topic: Murfix's durable bolt on motor mounts ;-)
Replies: 18
Views: 2852

Re: Murfix's durable bolt on motor mounts ;-)

I was thinking of something like paris trucks (or clones) that seem to have a round axle, but I don't have any, so maybe someone else knows. Just thought that there is no bolt on for round axle longboard trucks yet. I'm hoping to run a 5 inch pneumatic setup with longboard trucks and 48/12 gearing ...
by Murfix
Jun 15, 2014 11:46 am
Forum: Items for Sale - New
Topic: Murfix's durable bolt on motor mounts ;-)
Replies: 18
Views: 2852

Re: Murfix's durable bolt on motor mounts ;-)

Thanks for the input guys! Hey Murfix, looks like a good idea to me. Just a couple of points: 1) Would it be worth getting two designs made up? It makes no difference in functionality but aesthetically speaking, they might look unnecessarily large for 50mm motors. 2) Is there a grub screw to stop ro...
by Murfix
Jun 15, 2014 4:22 am
Forum: Battery Technology
Topic: LiFePo4 C-rating confusion: 1C or 20C?
Replies: 18
Views: 1202

Re: LiFePo4 C-rating confusion: 1C or 20C?

Thanks :) I think my best suitable pack would be 12s2p. It can deliver the amps I need and can still be small and light enough to be carried underneath an eboard. I will definitely be needing a BMS though. I don't want to hook 'em up on the balance charger every time I've been riding. I just want to...
by Murfix
Jun 15, 2014 3:34 am
Forum: Items for Sale - New
Topic: Murfix's durable bolt on motor mounts ;-)
Replies: 18
Views: 2852

Re: Murfix's durable bolt on motor mounts ;-)

Sorry guys, I meant to add all the info on the same day I posted this, but I ran into a small accident, and then I couldn't run anymore... I've added more details in the first post. Would you see some details changed/added, let me know! Any input is appreciated. I just want to upgrade my design skil...
by Murfix
Jun 15, 2014 3:21 am
Forum: Stand-up E-scooters and E-skateboards
Topic: Electric MBS Comp16 Mountainboard Build
Replies: 40
Views: 3761

Re: Electric MBS Comp16 Mountainboard Build

michaeliam wrote:I could also put a spacer between the motor and the mount to bring the shaft a bit to the right couldn't I?
Yes, that's the way to go!
by Murfix
Jun 14, 2014 8:00 am
Forum: Battery Technology
Topic: LiFePo4 C-rating confusion: 1C or 20C?
Replies: 18
Views: 1202

Re: LiFePo4 C-rating confusion: 1C or 20C?

Thanks for the explanations. It seems there is a lot more variety in lifepo cells than in lipo cells. Could you recommend a BMS that can handle 50A and peaks up to 100A (for use with 26650's, 40V) ? I'm in Europe if that helps. I've been reading about the characteristics and found tons of charts for...
by Murfix
Jun 13, 2014 10:30 am
Forum: Battery Technology
Topic: LiFePo4 C-rating confusion: 1C or 20C?
Replies: 18
Views: 1202

Re: LiFePo4 C-rating confusion: 1C or 20C?

Schlafmutze wrote:first one is very unlikely 20c

second one (a123) is.
Thanks for the quick reply.

Could you clarify why I've been reading claims of only 1C? My best guess would be because of a different cell type? For example 18650?