Go Back   oOple.com Forums > General > 1/8th ELECTRIC Off Road

Reply
 
Thread Tools Display Modes
  #21  
Old 14-01-2010
Marvin's Avatar
Marvin Marvin is offline
Senior Member
 
Join Date: Jun 2008
Location: Maidstone
Posts: 871
Default

5S or 4S (5S for sprightly performance, 4S if you have a tight track, and need more controlability).
__________________
Reply With Quote
  #22  
Old 14-01-2010
450kid's Avatar
450kid 450kid is offline
Member
 
Join Date: Dec 2008
Posts: 217
Default

just trying to work this out is the motor more efficent if th wh is higher or lower?
Reply With Quote
  #23  
Old 15-01-2010
jasonwipf jasonwipf is offline
Member
 
Join Date: Dec 2009
Location: Houston Texas
Posts: 242
Default

Ya the higher the voltage the more efficient so cooler system and better milage.

Gnr racer: depends, what run time are you shooting for in that buggy?
Reply With Quote
  #24  
Old 15-01-2010
gnr racer's Avatar
gnr racer gnr racer is offline
Senior Member
 
Join Date: Jan 2009
Location: South Wales
Posts: 339
Default

Quote:
Originally Posted by jasonwipf View Post
Ya the higher the voltage the more efficient so cooler system and better milage.

Gnr racer: depends, what run time are you shooting for in that buggy?
Im looking for as much run time as possible to be honest &i do want to go 5 cell for that extra punch but im looking at weight too....
the Hyperion 5cell 5500mah is 745g! where as the 5cell 4200mah is 561g
I did read on rc tech that it is recommended to keep the lipo weight in the Losi buggy to less than 600g so im not to sure if the 4200 would suit the conversion better
Reply With Quote
  #25  
Old 15-01-2010
Marvin's Avatar
Marvin Marvin is offline
Senior Member
 
Join Date: Jun 2008
Location: Maidstone
Posts: 871
Default

Right. Higher voltage is ONLY more efficient WHEN the same power is required (ie overall speed) as the lower voltage set-ups.

A 4S set up geared for 40mph is less efficient than a 6S set-up geared for 40mph. A 4S set-up geared for 40 compared with a 6S set up geared for 60 isn't a fair comparison.

So a low KV motor paired with high voltage, geared for x, is more efficient than a high KV motor paired with low voltage, geared for x.

I ran a 5S 5500mAh Hyperion in my buggy (XB808) and it went well - the Losi conversion doesn't place the battery in the optimum location for heavier batteries - in this case a custom build would be better.

5S doesn't always give more punch - only if you don't change the gearing or motor from the lower voltage. It's possible to have a faster low voltage car than the high voltage - it's not all down to the voltage - the motor and gearing also play a big factor.
__________________
Reply With Quote
Reply

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 Off

Forum Jump


All times are GMT. The time now is 07:49 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
oOple.com