RC-Monster Forums  

Go Back   RC-Monster Forums > Support Forums > Brushless

Reply
 
Thread Tools Rate Thread Display Modes
Old
  (#1)
BrianG
RC-Monster Admin
 
BrianG's Avatar
 
Offline
Posts: 14,609
Join Date: Nov 2005
Location: Des Moines, IA
05.03.2007, 09:55 AM

Wow, 200! I was thinking of about 20, lol. But yeah, the ones they use in the Quark, just more of them would be nice to use.
  Send a message via Yahoo to BrianG Send a message via MSN to BrianG  
Reply With Quote
Old
  (#2)
zeropointbug
Z-Pinch racer
 
zeropointbug's Avatar
 
Offline
Posts: 3,141
Join Date: Nov 2006
Location: SK, Canada
05.03.2007, 01:39 PM

HERE is the data sheet on those, they are Nichicon PM series caps. They are the best series that have 35v rated.

The 330uF has 0.06ohm (100khz), and the 1500uF has 0.024ohm (100khz). So five of the 330uF to get roughly the same capacity as the 1500uF will get you 0.012ohm, pretty good.

I am trying to decide between these. :024:


“The modern astrophysical concept that ascribes the sun’s energy to thermonuclear reactions deep in the solar interior is contradicted by nearly every observable aspect of the sun.” —Ralph E. Juergens

Last edited by zeropointbug; 05.03.2007 at 01:40 PM.
   
Reply With Quote
Old
  (#3)
zeropointbug
Z-Pinch racer
 
zeropointbug's Avatar
 
Offline
Posts: 3,141
Join Date: Nov 2006
Location: SK, Canada
05.03.2007, 06:06 PM

I still want to try those 140 farad Maxwell Ultra capacitors, it appears as thought they have better ESR than these low-ESR caps. Even factoring in the frequency coefficient for ESR

DC ESR: .0072ohm

1KHz ESR: .0036ohm

It looks like to me they would do a better job with such low esr, and very large capacitance available. Plus you would have extremely high power on tap. Batts would only deliver the average current draw. They are rated for 530 amps with a short circuit, and 15,000 watts/kg. $5 a cap, you would need 8 for 4s LiPo.


“The modern astrophysical concept that ascribes the sun’s energy to thermonuclear reactions deep in the solar interior is contradicted by nearly every observable aspect of the sun.” —Ralph E. Juergens
   
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes Rate This Thread
Rate This Thread:

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

Forum Jump







Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2026, vBulletin Solutions Inc.
vBulletin Skin developed by: vBStyles.com