R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Electric On-Road

Closed Thread
Thread Tools Search this Thread
Old 12-22-2009, 07:05 PM   #151
Tech Regular
Brollywood's Avatar
Join Date: Aug 2008
Posts: 331
Trader Rating: 11 (100%+)

Why is everyone surprised? This is what roar does. They stand back for so long, let everyone (companies/racers) stretch the rules to the max then change the rules. Then they change their mind on how they enforce it. Remember the carpet nats in Conn. Orr won with brushless and they had no clue what to do. So they let it run. He won. Then years later they finally put guidlines up. This rule is a joke. Now after coming back into onroad and getting the right chargers with the right update, they are changing the rules. wasted racers money. Im not surprised. ROAR is a joke. The only reason i go to the nationals is because the track thats hosting it. not the roar crew or their rules. supporting the tracks not the problem
Brollywood is offline  
Old 12-22-2009, 07:05 PM   #152
Tech Elite
L.Fairtrace's Avatar
Join Date: Apr 2004
Location: Beyond the Wall
Posts: 3,773
Trader Rating: 23 (100%+)
Send a message via AIM to L.Fairtrace

Who Cares

Awesomatix USA - EaMotorsports - RocheUSA - MonTech - Sanwa - BSR Racing Tires - TQ Wire - Solaris Racing Tires - Side Piece Racing

180 and 360 Raceway. Best on the East Coast. Take your pick
L.Fairtrace is offline  
Old 12-22-2009, 07:22 PM   #153
Tech Champion
STLNLST's Avatar
Join Date: Sep 2001
Location: Sacramento
Posts: 8,996
Trader Rating: 21 (100%+)

TOAST-to-the- T..........
STLNLST is offline  
Old 12-22-2009, 07:30 PM   #154
Regional Moderator
CarbonJoe's Avatar
Join Date: Jul 2006
Posts: 2,661

Like it or not, there are tolerances on everything electronic, computer controlled or not. A lot of electronic components are spec'ed with either 5% or 10% tolerance. For example, the second meter we used at the Halloween Classic, a Fluke 77, has an published accuracy of +/- 0.3%. There isn't a specification for repeatability, so even if the battery is exactly 8.400 volts, the meter could read 8.425 volts. Or an illegal 8.425 v battery could read 8.400 v. Adam claims that this would result in the racer being DQ'd for that round, when in fact it is the measuring device that is wrong. Also, note that Fluke specifies this as the "Best Accuracy", whatever that means. And the values also vary with temperature.


To the best of my knowledge, my ICE and Checkpoint chargers aren't upgradable, and are pre-programmed to stop the charging process at a non-configurable voltage (and mine read back the voltage as between 8.401 and 8.405 when charging is complete). So if the tolerances line up such that the charger's built-in meter reads low, and the ROAR meter reads high, what should the racer do? (Don't forget the repeatability factor). If you say that they should come and check the voltage after every charging cycle during the Nats on the ROAR meter before coming through tech, you're not being realistic.

Why not use some common sense and allow the racer to run the car to drop the voltage into the "legal" range before being allowed through tech? The last thing that this hobby needs is to alienate paying customers in the current economy.
*** The Gate - Celebrating 8 years at the same location ***
The difference between genius and stupidity is that genius has its limits. - Albert Einstein
Understeer is when you hit the wall with the front of the car and oversteer is when you hit the wall with the rear of the car
CarbonJoe is offline  
Old 12-22-2009, 07:43 PM   #155
Super Moderator
Kraig's Avatar
Join Date: Aug 2001
Location: Sun Prairie, WI
Posts: 6,489
Trader Rating: 71 (100%+)

I think we have more important issues than arguing over 0.04 or 0.02 volts.

Here is a summary.

ROAR removed the .04 and .02 tolerance for Lipo Batteries for their events.

The tech team is there to help you match your battery charger voltage reading with their meter. You figure out through simple math calculations where your charger needs to stop charging, either manually or automatic.

If everyone is being measured by the same meter from when the doors open to when the doors close does it really matter if it is 100% accurate or not? Probably not.

You move forward from that point on.

This thread is closed.
There is great need for a sarcasm font.

You never know when it will strike, but there comes a moment at work when you know that you just aren't going to do anything productive for the rest of the day.

Sometimes I post just to look at my avatar.
Kraig is offline  
Closed Thread

Similar Threads
Thread Thread Starter Forum Replies Last Post
The future of 1/12 scale Roland S Electric On-Road 1004 06-16-2017 02:04 PM
Electric 1/8th Scale conversion kits. DJ1978 Electric Off-Road 19923 06-12-2017 06:16 AM
5 Cells, the time is now!! Or atleast by 2008 Frank Root Electric Off-Road 421 08-20-2007 05:52 PM
ROAR to 4 cell.... Advil Electric On-Road 1394 12-21-2006 10:50 PM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Trackbacks are On
Pingbacks are On
Refbacks are Off

All times are GMT -7. It is currently 10:12 PM.

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net