Search found 39 matches

by BladeScraper
Apr 06 2015 4:25pm
Forum: E-Bike Non-hub Motor Drives
Topic: Help me get my setup good
Replies: 1
Views: 377

Help me get my setup good

Ok, so I am looking into an e-bike to get me around, for 0.5 to 1 mile hops around the neighbourhood as well as the occasional drive-til-battery's flat ride. I've decided on this setup Turnigy 6374-149Kv Motor 12s LiPo Castle ICE2 120HV ESC (good, because it has current limiting, soft start to preve...
by BladeScraper
Apr 06 2015 11:05am
Forum: E-Bike Non-hub Motor Drives
Topic: How to mount sprocket to rear wheel
Replies: 16
Views: 1787

Re: How to mount sprocket to rear wheel

Dude... you are amazing 8)

This is exactly what I want
http://www.dmrbikes.com/products/hubs/s ... -freewheel


do you know what rim I should get? 20" bike.
by BladeScraper
Apr 05 2015 11:31pm
Forum: E-Bike Non-hub Motor Drives
Topic: How to mount sprocket to rear wheel
Replies: 16
Views: 1787

Question about FW sprocket adapter on bike wheel

Ok, quick question: Would this be able to connect to the threaded hub of a BMX bike and function like I want it to (freewheel when I turn off throttle)? http://www.monsterscooterparts.com/freewheel-assembly.html http://www.ebay.com/itm/201145431105?var=500307760954 Also one more small question, how ...
by BladeScraper
Apr 05 2015 7:15pm
Forum: E-Bike Non-hub Motor Drives
Topic: How to mount sprocket to rear wheel
Replies: 16
Views: 1787

Re: How to mount sprocket to rear wheel

Ok, I've got it, I'll be finding a 20" wheel with disc brake mount. (or making one)

So now the question is, where can I find a good selection of sprockets that will fit that mounting pattern and is either #25 or #35 chain?
by BladeScraper
Apr 05 2015 4:48pm
Forum: E-Bike Non-hub Motor Drives
Topic: How to mount sprocket to rear wheel
Replies: 16
Views: 1787

How to mount sprocket to rear wheel

Also I need a sprocket in the 60-80t range to get good gearing even with dual stage drive due to a high kv motor. If you can find a 20" bike wheel with disc brakes that doesn't cost a fortune and a 60-80t sprocket that has a 6 hole disc brake mounting pattern, that would be great :D
by BladeScraper
Apr 05 2015 4:44pm
Forum: E-Bike Non-hub Motor Drives
Topic: How to mount sprocket to rear wheel
Replies: 16
Views: 1787

Re: How to mount sprocket to rear wheel

I wanted to do that but I haven't been able to find a 20 inch wheel with disc brakes.
by BladeScraper
Apr 05 2015 11:14am
Forum: E-Bike Non-hub Motor Drives
Topic: How to mount sprocket to rear wheel
Replies: 16
Views: 1787

How to mount sprocket to rear wheel

I want to use #25 because surplus center has a MASSIVE selection of #25 sprockets. I especially like their 5/16 bore sizes. They have 11t through 23t :) and those would go on my motor (would have to slightly reduce shaft diameter from 8mm to 5/16" otherwise it won't fit in the sprocket) they also ha...
by BladeScraper
Apr 05 2015 9:15am
Forum: E-Bike Non-hub Motor Drives
Topic: How to mount sprocket to rear wheel
Replies: 16
Views: 1787

Re: How to mount sprocket to rear wheel

Just had an idea for a freewheel: I can use a one way bearing and a normal sprocket. The sprocket can be bored out to 3/4" (max bore is stated as 3/4") http://www.surpluscenter.com/Power-Transmission/Sprockets/Finished-Bore-Sprockets/18T-1-2-BORE-25P-SPROCKET-1-2742-18-D.axd then this one way needle...
by BladeScraper
Apr 05 2015 9:09am
Forum: E-Bike Non-hub Motor Drives
Topic: How to mount sprocket to rear wheel
Replies: 16
Views: 1787

Re: How to mount sprocket to rear wheel

What is the motor do you have, you mean that there are not possibility to mount a freewheel in your build? I'm making a dual stage drive. Turnigy 6374-149Kv. First stage is 11/48t, second is 14/80t (both can be changed for higher speed) If you are using a wheel with the standard 6-hole mount for a ...
by BladeScraper
Apr 05 2015 1:35am
Forum: E-Bike Non-hub Motor Drives
Topic: How to mount sprocket to rear wheel
Replies: 16
Views: 1787

How to mount sprocket to rear wheel

Been looking for ages and have gotten nowhere... anyone know how to mount something like this to the left side of a wheel (so that I can still use the pedals if necessary)?


http://www.monsterscooterparts.com/25sp80to2moh.html
by BladeScraper
Nov 20 2014 8:11am
Forum: Stand-up E-scooters and E-skateboards
Topic: My Razor E100 ---> Brushless
Replies: 3
Views: 1608

Re: My Razor E100 ---> Brushless

I'm faced with a decision - I talked to Tony @ Scorpion Power Systems, and he says that I can get a custom rewind on my Scorpion 4025 to make it 150~180Kv, and also a custom 8mm shaft, for $85 plus shipping. That is a Kv geared for 12s LiPo so I would need a ~80A HV ESC. Worth it?
by BladeScraper
Nov 20 2014 8:11am
Forum: Stand-up E-scooters and E-skateboards
Topic: My Razor E100 ---> Brushless
Replies: 3
Views: 1608

Re: My Razor E100 ---> Brushless

I'm faced with a decision - I talked to Tony @ Scorpion Power Systems, and he says that I can get a custom rewind on my Scorpion 4025 to make it 150~180Kv, and also a custom 8mm shaft, for $85 plus shipping. That is a Kv geared for 12s LiPo so I would need a ~80A HV ESC. Worth it?
by BladeScraper
Nov 13 2014 11:04pm
Forum: Motor Technology
Topic: Can I use this ESC with the Turnigy 6374-149kv?
Replies: 12
Views: 1221

Re: Can I use this ESC with the Turnigy 6374-149kv?

You can get ultra high RPM firmware for up to 100,000 ERPM (rpm x pole count) for the Kelly, but at a hefty $100 price tag...


Question:
How can I go about mounting hall sensors to this motor?
by BladeScraper
Nov 13 2014 10:43am
Forum: Motor Technology
Topic: Can I use this ESC with the Turnigy 6374-149kv?
Replies: 12
Views: 1221

Re: Can I use this ESC with the Turnigy 6374-149kv?

The main problem with using the 6374 on this controller is it's sensorless (no hall sensors). Do a search for people using Kelly Controllers with RC outrunners, I'm pretty sure a few have done that. I was thinking that was something that may make it not work (because I've seen some that REQUIRE sen...
by BladeScraper
Nov 13 2014 10:40am
Forum: Motor Technology
Topic: Can I use this ESC with the Turnigy 6374-149kv?
Replies: 12
Views: 1221

Re: Can I use this ESC with the Turnigy 6374-149kv?

Wouldn't recommend it. The motor has a max current draw of 80a, using a 60a is asking for trouble, especially on those hills. More along the line of: http://www.aliexpress.com/item/24FET-IRFB4110-s-3000W-48-84V-80Amax-BLDC-motor-controller-EV-brushless-speed-controller-sensor-sensorless/522263950.h...
by BladeScraper
Nov 13 2014 10:37am
Forum: Motor Technology
Topic: Can I use this ESC with the Turnigy 6374-149kv?
Replies: 12
Views: 1221

Re: Can I use this ESC with the Turnigy 6374-149kv?

Gregory wrote:First that's not called an ESC but a controller.
electronic speed controller :) It may not be always called that in the ev world, but in the RC world, it is an ESC :) and since I am a RC guy, it's an ESC ;)


Anyway, I've seen them called both ESC and just controller. So yeah :)
by BladeScraper
Nov 12 2014 8:14pm
Forum: Motor Technology
Topic: Can I use this ESC with the Turnigy 6374-149kv?
Replies: 12
Views: 1221

Can I use this ESC with the Turnigy 6374-149kv?

http://www.ebay.com/itm/New-72V-2000W-Electric-Bicycle-Brushless-Motor-Controller-For-E-bike-Scooter-/360966243465?pt=LH_DefaultDomain_0&hash=item540b43c489 Will it work? I want it because it has a 60A current rating and I live around lots of hills and I want to be able to haul up the hills without ...
by BladeScraper
Nov 12 2014 6:12pm
Forum: Electric Aircraft
Topic: Flying my Gaui X3 (450 Class Helicopter)
Replies: 5
Views: 1540

Re: Flying my Gaui X3 (450 Class Helicopter)

that is friken AWESOME :) How long did it take you to learn to fly like this? Any tips? :shock: I'm 14 and I've been flying about 2 or 2.5 years. :) Simulator simulator simulator. RealFlight 7.5 is my favorite. such extreme acceleration oh. you have no idea :mrgreen: https://www.youtube.com/watch?v...
by BladeScraper
Nov 11 2014 7:06pm
Forum: Stand-up E-scooters and E-skateboards
Topic: Anyone used Turnigy 6374 149Kv, and other questions
Replies: 17
Views: 1871

Re: Anyone used Turnigy 6374 149Kv, and other questions

All of the things used in Ohm's law equations can be used to find the other ones.

Since P = IC, then I = P / V, also V = P / I

http://www.sengpielaudio.com/calculator-ohm.htm

Type any two options in those boxes and it solves for the other two :)
by BladeScraper
Nov 11 2014 5:30pm
Forum: Stand-up E-scooters and E-skateboards
Topic: Anyone used Turnigy 6374 149Kv, and other questions
Replies: 17
Views: 1871

Re: Anyone used Turnigy 6374 149Kv, and other questions

I am aware that the gearing gets torque and not Kv. But when you want more torque and you can't really do anything with gearing (in fact, in my case I actually have to go up to a 11t from 9t that I have now because 9t isn't available the way I need (8mm Bore and set screw), you can either go with a ...
by BladeScraper
Nov 11 2014 4:33pm
Forum: Stand-up E-scooters and E-skateboards
Topic: Anyone used Turnigy 6374 149Kv, and other questions
Replies: 17
Views: 1871

Re: Anyone used Turnigy 6374 149Kv, and other questions

The problem with bigger gears are that there are none that will fit. 47t is what there is, and there's all there is. Mainly because if you had a bigger gear, it would be bigger than the wheel is. Which would be very very bad obviously. The main thing is, if I got a bigger motor, I COULD gear it high...
by BladeScraper
Nov 11 2014 3:06pm
Forum: Stand-up E-scooters and E-skateboards
Topic: Anyone used Turnigy 6374 149Kv, and other questions
Replies: 17
Views: 1871

Re: Anyone used Turnigy 6374 149Kv, and other questions

Here's my problems with the 4025: 1. Tooooooo fast. It's 740Kv. No doubt the heat is lack of voltage... but I can't run it any faster. Running 12s would make it turn 28,000 RPM, which according to a calculator would do 84MPH :P Even 6s would give me over 40MPH... all I want is ~20-25 and high torque...
by BladeScraper
Nov 11 2014 8:09am
Forum: Stand-up E-scooters and E-skateboards
Topic: Anyone used Turnigy 6374 149Kv, and other questions
Replies: 17
Views: 1871

Re: Anyone used Turnigy 6374 149Kv, and other questions

5.5" Razor wheel (probably worn down to 5 or 5.25 by now, its old)
9T on motor
47T on wheel
20MPH
1.5-1.75 miles and motor searing hot if I don't let it rest for a bit
by BladeScraper
Nov 10 2014 4:25pm
Forum: Battery Technology
Topic: MultiStar 10,000mAh 10C 6s LiPo's from HobbyKing
Replies: 8
Views: 1494

Re: MultiStar 10,000mAh 10C 6s LiPo's from HobbyKing

I searched for a while and couldn't find anything ;)