Go Back   RCCrawler Forums > RCCrawler General Tech > Electronics
Loading

Notices

Thread: Have tech questions? Will answer.

Reply
 
LinkBack Thread Tools Display Modes
Old 10-17-2020, 01:39 PM   #1861
I wanna be Dave
 
Join Date: Jun 2016
Location: Deep in the Everglades
Posts: 5,416
Default Re: Have tech questions? Will answer.

Start by following the instructions. Castle esc and Futaba the esc channel needs to be reversed.

Look at your LED on the esc. Yellow is neutral/ stopped, Red should be reverse direction and green should be forward. If not , reverse channel 2


Hang up and Drive
mikemcE is offline   Reply With Quote
Sponsored Links
Old 10-17-2020, 02:37 PM   #1862
Newbie
 
Join Date: Jun 2015
Location: Vallejo
Posts: 8
Default Re: Have tech questions? Will answer.

I reversed throttle, then had to reverse motor direction, works right!
Thank you for taking time to help me out. Soooo much to learn.
Dirt Diggler is offline   Reply With Quote
Old 10-17-2020, 02:41 PM   #1863
Newbie
 
Join Date: Jun 2015
Location: Vallejo
Posts: 8
Thumbs up Re: Have tech questions? Will answer.

Thanks for the input, got it corrected. Reversed throttle and then motor direction.
Dirt Diggler is offline   Reply With Quote
Old 11-24-2020, 09:54 PM   #1864
Newbie
 
Join Date: Oct 2020
Location: San Jose
Posts: 28
Default Re: Have tech questions? Will answer.

How much torque do you get from a motor?


I did some math and it looks like not much, but I may have missed something?

KT=1/KV. So a 2850KV has .0035 Nm/A Torque (KT).
Max RPM is 31,635 on an 11.1V (3S) Lipo.

For the sake of argument lets say it pulls 40A.
So the total torque output would be 0.01404 Nm or 0.00143 Kg-m.

Which is pretty dang low.


The it's compounded by the transmission, transfer case and axles, but still even at 100:1 it's still super low.


What did I miss?
itr1275 is online now   Reply With Quote
Old 11-24-2020, 10:21 PM   #1865
RCC Addict
 
Join Date: Feb 2017
Location: My mothers basement
Posts: 1,677
Default Re: Have tech questions? Will answer.

Quote:
Originally Posted by itr1275 View Post
How much torque do you get from a motor?


I did some math and it looks like not much, but I may have missed something?

KT=1/KV. So a 2850KV has .0035 Nm/A Torque (KT).
Max RPM is 31,635 on an 11.1V (3S) Lipo.

For the sake of argument lets say it pulls 40A.
So the total torque output would be 0.01404 Nm or 0.00143 Kg-m.

Which is pretty dang low.


The it's compounded by the transmission, transfer case and axles, but still even at 100:1 it's still super low.


What did I miss?
I don't know what you missed, https://m.facebook.com/groups/161551...1703704152535/

Here is a some motors from a dyno showing their torque.

The torque is linear, and not constant.

__________________________
Handy gearing spreadsheet

Last edited by Voodoobrew; 11-24-2020 at 10:23 PM.
Voodoobrew is offline   Reply With Quote
Reply



Have tech questions? Will answer. - Similar Threads
Thread Thread Starter Forum Replies Last Post
suspension tech questions. Gen3_Teg_88 General Crawlers 9 07-13-2018 09:29 AM
axle tech questions 808eng_rc Multi Axle Rigs 4 11-07-2013 03:08 PM
(HH) Tech Questions and Customer support thread JohnRobHolmes Holmes Hobbies 3483 02-05-2013 10:08 PM
2 stupid newbie questions needs answer Mysterious Axial XR10 21 06-18-2012 10:22 AM
? Who has the answer to thes questions ? mik236 Team Losi Comp Crawler 12 05-23-2010 03:40 PM
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -6. The time now is 01:25 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO ©2011, Crawlability, Inc.
Copyright 2004-2014 RCCrawler.com