R/C Tech Forums

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

Like Tree1Likes
Closed Thread
 
Thread Tools Search this Thread
Old 06-25-2008, 09:46 PM   #1366
Tech Champion
 
robk's Avatar
 
Join Date: Aug 2001
Location: Macho Business Donkey Wrestler
Posts: 7,588
Trader Rating: 22 (100%+)
Default

Quote:
Originally Posted by revolution31 View Post
I haven't really read very far back...but I didn't see anything about this (please point me to a specific thread if I missed it)...

Has anyone been playing with the 21.5 or 17.5 timing? Any suggestions/likes/dislikes with the 4-cell power? (I am running 17.5 right now)
Crank em'. If you have a ESC with electronic timing (LRP, SP) you may have to play around until you find some setting you like.
__________________
A mutually re-enforcing cascade of failure

"Failior [sic] crowns enterprise." Robert Goddard

I-Lap Scoring Systems http://www.rclapcounter.com/
robk is offline  
Old 06-25-2008, 10:22 PM   #1367
Tech Champion
 
geeunit1014's Avatar
 
Join Date: Sep 2005
Location: The dirty burnie
Posts: 5,506
Trader Rating: 12 (100%+)
Default

Quote:
Originally Posted by revolution31 View Post
I haven't really read very far back...but I didn't see anything about this (please point me to a specific thread if I missed it)...

Has anyone been playing with the 21.5 or 17.5 timing? Any suggestions/likes/dislikes with the 4-cell power? (I am running 17.5 right now)

with the 21.5 since there is an FDR limit you will probably want to crank the timing since your gear is fixed (depending on track size, cranking it will do better on big tracks) with the 17.5, since the ratios are open, leave the timing at 0 and gear away.. its just as fast and the motor runs cooler
__________________
Mike Gee

Awesomatix USA/Pyscho Cells Racing/Tekin/Sweep Racing/RSD/180 Raceway/Johns Mobile Raceway/TQ Wire/Avid/Sanwa
geeunit1014 is offline  
Old 06-26-2008, 08:47 AM   #1368
Tech Addict
 
Join Date: Nov 2007
Location: Colorado
Posts: 627
Trader Rating: 6 (100%+)
Send a message via Skype™ to revolution31
Default

Quote:
Originally Posted by robk View Post
Crank em'. If you have a ESC with electronic timing (LRP, SP) you may have to play around until you find some setting you like.
Quote:
Originally Posted by geeunit1014 View Post
with the 21.5 since there is an FDR limit you will probably want to crank the timing since your gear is fixed (depending on track size, cranking it will do better on big tracks) with the 17.5, since the ratios are open, leave the timing at 0 and gear away.. its just as fast and the motor runs cooler
Thanks for the input.. I am running a Sphere Comp with a Novak 17.5...I have been messing around with the ESC timing and it just keeps getting faster...so I figured I might as well see if anyone else is adjusting timing on the motors too
revolution31 is offline  
Old 06-26-2008, 08:53 AM   #1369
Tech Elite
 
squarehead's Avatar
R/C Tech Charter Subscriber
 
Join Date: Nov 2003
Location: Wheaton, Illinois
Posts: 4,211
Trader Rating: 75 (100%+)
Send a message via AIM to squarehead Send a message via MSN to squarehead Send a message via Yahoo to squarehead Send a message via Skype™ to squarehead
Thumbs up

FWIW, most of our testing was done with the timing fully advanced on the 17.5 and 21.5 motors. We found that there were marginal gains to be made, but all of the equality in the motor formulas was done with the timing factored in.


Crank 'em up.
__________________
Everything depends.
Nothing is always.
Everything is sometimes.
squarehead is offline  
Old 06-26-2008, 09:31 AM   #1370
Tech Elite
 
Join Date: Apr 2007
Location: Winthrop harbor
Posts: 2,293
Trader Rating: 1 (100%+)
Default USVTA DVD's

I have a few extra copies of the race if anyone is interested.
__________________
Team Novak,Gravity RC,
ercwhtsd is offline  
Old 06-26-2008, 02:05 PM   #1371
Tech Master
 
f1larry's Avatar
R/C Tech Charter Subscriber
 
Join Date: Oct 2003
Location: Buffalo Grove, IL
Posts: 1,785
Trader Rating: 17 (100%+)
Send a message via AIM to f1larry
Default

Quote:
Originally Posted by ercwhtsd View Post
I have a few extra copies of the race if anyone is interested.

Eric,

Is there any of the video stuff Zion Benton did on Youtube.

Thanks,
Larry
__________________
Windy City RC Raceway & Hobbies, Arlington Heights, IL
Exotek F1R3|X-Ray T4 16|CRC WC-Xti|TT02|TA05|TL01|
f1larry is offline  
Old 06-26-2008, 02:11 PM   #1372
Tech Elite
 
Join Date: Apr 2007
Location: Winthrop harbor
Posts: 2,293
Trader Rating: 1 (100%+)
Default

Larry-

I am not that talented , just ask around .

I will try and figure out how to do it, or have one of the kids do it
__________________
Team Novak,Gravity RC,
ercwhtsd is offline  
Old 06-26-2008, 03:12 PM   #1373
Tech Elite
 
HobbyPLEX's Avatar
 
Join Date: Aug 2005
Location: Omaha, NE
Posts: 2,370
Default

Hey guys, we ran a 1.2 hour Trans Am enduro last night. Three man teams, one car and a mandatory tire change, I believe everyone ran 21.5/Lipo. The race turned out awesome, only 2.4 seconds between first and second at the finish!! Here's a link to the results:
http://www.hobbyplexraceway.com/resu...h=2008+Summer/

Tim Ski
__________________
www.hobbyplexraceway.com
** 2017 TLR Offroad Cup @ the 'PLEX April 28th-30th **
Tamiya Championship Series since 2009 ** J-Concept Spring Nitro Nationals
ROAR NATS - '16 & '09 Electric Offroad/'14 & '08 Carpet Onroad/'11 1/8 Electric
'16, '11, '08 BRL NOVAK National Finals
HobbyPLEX is offline  
Old 06-26-2008, 07:08 PM   #1374
Tech Fanatic
 
IL_AudiRacer's Avatar
 
Join Date: Jan 2008
Location: Clearwater FL
Posts: 981
Trader Rating: 58 (100%+)
Default

Quote:
Originally Posted by HobbyPLEX View Post
Hey guys, we ran a 1.2 hour Trans Am enduro last night. Three man teams, one car and a mandatory tire change, I believe everyone ran 21.5/Lipo. The race turned out awesome, only 2.4 seconds between first and second at the finish!! Here's a link to the results:
http://www.hobbyplexraceway.com/resu...h=2008+Summer/

Tim Ski
Thats awesome how many Batteries did you go through and what size were you using ?? hopefully we can get something like this going at our local track
IL_AudiRacer is offline  
Old 06-26-2008, 08:39 PM   #1375
Tech Master
 
padailey's Avatar
 
Join Date: Nov 2005
Location: Council Bluffs, IA
Posts: 1,603
Trader Rating: 11 (100%+)
Default

Quote:
Originally Posted by IL_AudiRacer View Post
Thats awesome how many Batteries did you go through and what size were you using ?? hopefully we can get something like this going at our local track

Most had batteries around 5000 mah. I think most were getting around 25+ minutes of run time if they were able to run a full pack. 30 I think would be possible if someone ran real smooth. So you could do the 72 minutes on 3 batteries. However it was pretty hard to just use 3 unless your pit strategy paid off just right. We made it on 3 but we were in 3rd and about 5-6 laps down and 4th was a few laps down to us so I took it easy to make sure I made it. We had a thermal before the second battery ran out which threw our strategy off; that and we were hoping for 30 mins out of a 5000 and didn't make it.

It was good fun though.... tire change was good but man it was frustrating sitting in the pits that long! Made it interesting!
__________________
www.hobbyplexraceway.com

Tamiya TRF417X (Lion's Automotive GTR)
Tamiya TRF416X
Tamiya F104W MP6/4 converted to F104X1 (Renault R30)
padailey is offline  
Old 06-26-2008, 10:25 PM   #1376
Tech Elite
 
Grenade10's Avatar
 
Join Date: Nov 2003
Location: Fort Collins, Colorado
Posts: 4,674
Trader Rating: 37 (100%+)
Default

Quote:
Originally Posted by padailey View Post
Most had batteries around 5000 mah. I think most were getting around 25+ minutes of run time if they were able to run a full pack. 30 I think would be possible if someone ran real smooth. So you could do the 72 minutes on 3 batteries. However it was pretty hard to just use 3 unless your pit strategy paid off just right. We made it on 3 but we were in 3rd and about 5-6 laps down and 4th was a few laps down to us so I took it easy to make sure I made it. We had a thermal before the second battery ran out which threw our strategy off; that and we were hoping for 30 mins out of a 5000 and didn't make it.

It was good fun though.... tire change was good but man it was frustrating sitting in the pits that long! Made it interesting!
You guy's all ways seem to come up with some good idea's!!!
__________________
Darkside, Sweep, BSR, Fantom, IGT Hobbies and IGT8
Byrons Fuel, ProtoForm Bodies & Futaba Radio Gear by Choice
Founding Member of CORRC .... 5280raceway
www.darksidems.com www.igthobbies.com www.IGT8.com
Grenade10 is offline  
Old 06-27-2008, 08:06 AM   #1377
Tech Elite
 
Join Date: Nov 2006
Posts: 4,324
Trader Rating: 24 (100%+)
Default

Quote:
I would go with the futaba 9550 or the KO Propo PDS-2413ICS fast and strong .10 speed,8.5kg torque and its low profile....
Thanks to ChicagoKenji and crew, I am joining the TA class (at StrictlyRC). I was almost going to get the NiMH batteries and charger and brushed motor (yuk, yuk, and yuk) because the class was so much fun. The ability to run the LiPo and 21.5 just sealed the deal. I hope to try out the car (a xxx-s) this weekend.

I have a KO PDS-2413ICS in my xxx-4, and it works great there. For the TA class, I will be trying out a Futaba S9650, a "high-torque" 12th scale servo.
BobWoodhouse is offline  
Old 06-27-2008, 08:17 AM   #1378
Tech Elite
 
squarehead's Avatar
R/C Tech Charter Subscriber
 
Join Date: Nov 2003
Location: Wheaton, Illinois
Posts: 4,211
Trader Rating: 75 (100%+)
Send a message via AIM to squarehead Send a message via MSN to squarehead Send a message via Yahoo to squarehead Send a message via Skype™ to squarehead
Default

Quote:
Originally Posted by BobWoodhouse View Post
For the TA class, I will be trying out a Futaba S9650, a "high-torque" 12th scale servo.
Welcome to Trans Am, Bob!

Bring a few spare servos, as even with 62.5 oz-in. of torque on 6v, that's not enough for a touring car. I wouldn't think the durability will be up to par on that for a heavier touring car, either. You'd be better off with a s9551 or s9452. Look for something with at least 80-100 oz-in. of torque and a standard size (think gear durability). The s9650 won't survive in a TC chassis, otherwise everyone would be using them.

Consider that the steering servo is your only connection to the way the car will react to your steering input at the radio, and it makes sense to not skimp on a steering servo. It will definitely make a big difference in how the car "feels" to you on the track.


doug
__________________
Everything depends.
Nothing is always.
Everything is sometimes.
squarehead is offline  
Old 06-27-2008, 09:00 AM   #1379
Tech Elite
 
Join Date: Nov 2006
Posts: 4,324
Trader Rating: 24 (100%+)
Default

Doug,

Thanks for the advice. I will be trying it out since it is what I have for this weekend. I borrowed one of ChicagoKenji's cars a few weeks ago, so after racing once, I thought that the forces and impacts in TA were really not that much, which is why I thought of venturing out with the 9650. You think running only in asphalt TA will be tough on the 9650?

I am guessing the C-Kenji car had a Z590m in it. There was only one place where I thought I was lacking for steering, which was in a little switchback area before entering the sweeper to the back straight -- I had to really plan out that turn. The modified cars would just wiggle their tail at that area. I don't know what the other TA cars did there.

Best,
Bob
BobWoodhouse is offline  
Old 06-27-2008, 09:11 AM   #1380
Tech Champion
 
TimPotter's Avatar
 
Join Date: Sep 2001
Location: Boynton Beach Fl > Randoph NJ
Posts: 7,481
Trader Rating: 14 (100%+)
Send a message via AIM to TimPotter
Default

Did you guys have a quick change system for the batteries ? Or a minimum pit time.... like 1 minute ?


Quote:
Originally Posted by padailey View Post
Most had batteries around 5000 mah. I think most were getting around 25+ minutes of run time if they were able to run a full pack. 30 I think would be possible if someone ran real smooth. So you could do the 72 minutes on 3 batteries. However it was pretty hard to just use 3 unless your pit strategy paid off just right. We made it on 3 but we were in 3rd and about 5-6 laps down and 4th was a few laps down to us so I took it easy to make sure I made it. We had a thermal before the second battery ran out which threw our strategy off; that and we were hoping for 30 mins out of a 5000 and didn't make it.

It was good fun though.... tire change was good but man it was frustrating sitting in the pits that long! Made it interesting!
__________________
Clean Title & Escrow|p3|TRF|Tamiya|SerpentAmerica|FSEARA|Team Butter|RC 3|Munno |RCTECH #29|EAMotorsports|BMI|Novak|SpeedPassion|RadioPost
TimPotter is offline  
Closed Thread

Similar Threads
Thread Thread Starter Forum Replies Last Post
Georgia Vintage Trans Am Racing shadow102 Georgia Racing 725 02-24-2012 09:56 AM
Vintage Trans Am Scottrik Electric On-Road 47 02-24-2012 08:21 AM
Vintage Trans-Am TC hlpressley R/C Items: Wanted to Buy 5 10-23-2008 04:00 PM
Thursday Vintage Trans Am racing at Victory in Green Bay Brian F Wisconsin & Illinois Racing 13 05-10-2008 08:37 AM



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 02:26 AM.


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