R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 06-16-2011, 09:58 PM   #31
Tech Elite
 
Big Midget's Avatar
R/C Tech Elite Subscriber
 
Join Date: Jul 2007
Location: Lawrence, Ks
Posts: 4,334
Trader Rating: 100 (100%+)
Default

Sorry but I gotta ask this. what do you guys mean by adjust my roll out or go to a bigger roll out? I've heard of roll out before but always thought it was something to do with racing foam tires.(is this what you guys are referring too)
or.....
__________________
UltralineHobbies.com
Ultraline Raceway Topeka Ks
Dee & Mee Hobbies RickyRacer Lidz,Absolute Tattoo,Fuzzy Dice Decals
Big Midget is offline   Reply With Quote
Old 06-16-2011, 10:19 PM   #32
Tech Master
 
andrew-01's Avatar
 
Join Date: Mar 2007
Location: SOCAL
Posts: 1,210
Trader Rating: 22 (100%+)
Default

Quote:
Originally Posted by Big Midget View Post
Sorry but I gotta ask this. what do you guys mean by adjust my roll out or go to a bigger roll out? I've heard of roll out before but always thought it was something to do with racing foam tires.(is this what you guys are referring too)
or.....
Yes, they are referring to racing with foam tires. The title of the thread, and original poster were asking about settings for a 1/12th pan car which use foam tires.

Roll-out: how many inches(millimeters) your tire rolls/how far your car travels for each turn of the motor.

Tire Diameter x PI (3.14) = Circumference of tire
Spur / Pinion (120/43 is 2.7907 for example) = Gear Ratio
Tire Circumference / Gear ratio = Roll out

Check out Gearchart.com as you can enter tire diam, spur, pinion sizes etc and it will do the calculations for you.
__________________
ANDRXW.com
andrew-01 is offline   Reply With Quote
Old 06-16-2011, 10:41 PM   #33
Tech Elite
 
Big Midget's Avatar
R/C Tech Elite Subscriber
 
Join Date: Jul 2007
Location: Lawrence, Ks
Posts: 4,334
Trader Rating: 100 (100%+)
Default

So, to go with a larger roll out without gearing up. Would you run a set of tires with a larger circumference? If thats right then you'd only change the rears since we're talking about 2wd cars?

Sorry to get a little off topic. I'm new to foam and 12th scale.
__________________
UltralineHobbies.com
Ultraline Raceway Topeka Ks
Dee & Mee Hobbies RickyRacer Lidz,Absolute Tattoo,Fuzzy Dice Decals
Big Midget is offline   Reply With Quote
Old 06-16-2011, 10:48 PM   #34
Tech Master
 
andrew-01's Avatar
 
Join Date: Mar 2007
Location: SOCAL
Posts: 1,210
Trader Rating: 22 (100%+)
Default

Quote:
Originally Posted by Big Midget View Post
So, to go with a larger roll out without gearing up. Would you run a set of tires with a larger circumference? If thats right then you'd only change the rears since we're talking about 2wd cars?

Sorry to get a little off topic. I'm new to foam and 12th scale.
That's correct, but you want to keep your tire sizes in check. Larger tires tend to 'chunk' easier, they will need more power to spin them, and from what I've experienced the car seems to drive better with a consistent difference in front-to-rear tire size. It would also be easier, cheaper to go up a pinion tooth rather than throw on a new set of tires.

Check out these sites for a vast amount of info/knowledge:
http://richardchang.com/hobby.php?topic=112setup
http://www.petitrc.com/_forumphp/showthread.php?t=14314
http://www.rctech.net/forum/electric...orum-2401.html
__________________
ANDRXW.com
andrew-01 is offline   Reply With Quote
Old 06-16-2011, 10:53 PM   #35
Tech Elite
 
Big Midget's Avatar
R/C Tech Elite Subscriber
 
Join Date: Jul 2007
Location: Lawrence, Ks
Posts: 4,334
Trader Rating: 100 (100%+)
Default

Thanks for the help and the links andrew.
__________________
UltralineHobbies.com
Ultraline Raceway Topeka Ks
Dee & Mee Hobbies RickyRacer Lidz,Absolute Tattoo,Fuzzy Dice Decals
Big Midget is offline   Reply With Quote
Old 06-17-2011, 05:06 AM   #36
Tech Apprentice
 
Join Date: May 2011
Location: Canada
Posts: 67
Trader Rating: 1 (100%+)
Default LRP SXX V2 1/12 ROLLOUT

can you summarize what rollout to use in 1/12 with these ESC - mine hasn't arrived yet but my 17.5 Fantom motor is begging for a day of racing. My track is approx 100 feet long with the normal amount of turns....what would be my starting rollout then for a Duo3 17.5? lower 60 or higher 70?
Pokey72 is offline   Reply With Quote
Old 06-17-2011, 05:34 AM   #37
Tech Elite
 
MugenDrew's Avatar
 
Join Date: Aug 2006
Location: Apollo Beach, Florida
Posts: 2,098
Trader Rating: 30 (100%+)
Default

Quote:
Originally Posted by Pokey72 View Post
can you summarize what rollout to use in 1/12 with these ESC - mine hasn't arrived yet but my 17.5 Fantom motor is begging for a day of racing. My track is approx 100 feet long with the normal amount of turns....what would be my starting rollout then for a Duo3 17.5? lower 60 or higher 70?
I would assume 70mm or higher. There is a little chart that is in the instruction manual that provides starting settings and roll out.
What they have listed for 13.5 works, but I wouls add 10mm to the roll out for both the LRP motors as well as the "other" motors.
__________________
Mugen Seiki Racing Desoto Racing Race AKA Byron Original Fuels Arrowmax Sanwa RC America
MugenDrew is offline   Reply With Quote
Old 06-17-2011, 08:31 AM   #38
Tech Champion
 
RedBullFiXX's Avatar
R/C Tech Elite Subscriber
 
Join Date: Mar 2003
Location: Intergalactic Planetary
Posts: 6,542
Trader Rating: 34 (100%+)
Default

Quote:
Originally Posted by Pokey72 View Post
can you summarize what rollout to use in 1/12 with these ESC - mine hasn't arrived yet but my 17.5 Fantom motor is begging for a day of racing. My track is approx 100 feet long with the normal amount of turns....what would be my starting rollout then for a Duo3 17.5? lower 60 or higher 70?
If we can assume you are running non-boost, 95-100 roll is close for a 90x45 track.

As pointed out above, this esc is not best used for boosting stock spec motors.
__________________
--> 12th scale Information Source <--

"Men do not quit playing because they grow old; they grow old because they quit playing."
― Oliver Wendell Holmes Jr.
RedBullFiXX is offline   Reply With Quote
Old 06-17-2011, 10:20 AM   #39
Tech Apprentice
 
Join Date: May 2011
Location: Canada
Posts: 67
Trader Rating: 1 (100%+)
Default LRP SXX V2 1/12

Thanks guys...I love this thread!

Granted most guys at my track are running the RS, but in 17.5 I don't see the 1/12 cars "surge" or turbo like the larger TC vehicles. I'm sure it's due to the 1s vs 2s but still......so will it really be that much slower than a RS for 17.5 1/12 where they use the so called Turbo? Is there a setting or profile on the SXX v2 comp that would be comparable?

I'm sure it will make sense once I get mine...still waiting. Now, our Canada Post is on strike and RCBoys just mailed it...DOH!
Pokey72 is offline   Reply With Quote
Old 06-17-2011, 10:33 AM   #40
Tech Champion
 
RedBullFiXX's Avatar
R/C Tech Elite Subscriber
 
Join Date: Mar 2003
Location: Intergalactic Planetary
Posts: 6,542
Trader Rating: 34 (100%+)
Default

Quote:
Originally Posted by Pokey72 View Post
Thanks guys...I love this thread!

Granted most guys at my track are running the RS, but in 17.5 I don't see the 1/12 cars "surge" or turbo like the larger TC vehicles. I'm sure it's due to the 1s vs 2s but still......so will it really be that much slower than a RS for 17.5 1/12 where they use the so called Turbo? Is there a setting or profile on the SXX v2 comp that would be comparable?

I'm sure it will make sense once I get mine...still waiting. Now, our Canada Post is on strike and RCBoys just mailed it...DOH!
If you plan to use the SXX comp v2 in a class with boosted esc's be sure to stay off the racing line

Seriously.
Try the SXX Stock Spec v2 if you want to run boosted.

The SXX comp v2 is for mod, and can also run blinky.
__________________
--> 12th scale Information Source <--

"Men do not quit playing because they grow old; they grow old because they quit playing."
― Oliver Wendell Holmes Jr.
RedBullFiXX is offline   Reply With Quote
Old 06-17-2011, 01:28 PM   #41
Tech Apprentice
 
Join Date: May 2011
Location: Canada
Posts: 67
Trader Rating: 1 (100%+)
Default LRP SXX V2 FOR 1/12

Well it's too late then BC I ordered it and paid for it....based on my research (not track time). I went with the LRP SXX Comp V2 beucase it had a lower profile without the heatsink. the TC Spec or Stock Spec both had heat sinks which might make it too tall for 1/12 bodies.

The manual clearly shows BOOST settings and I like the idea of having seperate BOOST & FEEL settings....their manual states :

MODE 1 - lipo cutoff - for 1s it suggests setting #1 3.2v/cell

MODE 2 - ADPC FEEL setting for throttle feel Setting #1 is soft setting #10 is very aggressive. For 1s anything 5 and up is game I think.

MODE 3 - ADPC BOOST setting for active motor timing. It's software will read your RPM, throttle position, and current and make adjustments from their. Setting 1 - 10 implies 5 degree increments (if most systems top out approx 60 degrees) then most people run 30 - 40 degrees of boost which means any setting between 6 and 8 should work.

So I understand where you're coming from but I've great success with my previous LRP ESC's that I was willing to give the Comp V2 a chance.....I will be comparing it all to my MMPro 1 Cell and will post pictures when it arrives.

As suggested I will start my rollout at 70mm for my Fantom Duo 3 17.5 Spec motor.

Keep talking guys...MORE INFORMATION!
Pokey72 is offline   Reply With Quote
Old 06-17-2011, 04:20 PM   #42
Tech Champion
 
RedBullFiXX's Avatar
R/C Tech Elite Subscriber
 
Join Date: Mar 2003
Location: Intergalactic Planetary
Posts: 6,542
Trader Rating: 34 (100%+)
Default

Quote:
Originally Posted by Pokey72 View Post
Well it's too late then BC I ordered it and paid for it....based on my research (not track time). I went with the LRP SXX Comp V2 beucase it had a lower profile without the heatsink. the TC Spec or Stock Spec both had heat sinks which might make it too tall for 1/12 bodies.

The manual clearly shows BOOST settings and I like the idea of having seperate BOOST & FEEL settings....their manual states :

MODE 1 - lipo cutoff - for 1s it suggests setting #1 3.2v/cell

MODE 2 - ADPC FEEL setting for throttle feel Setting #1 is soft setting #10 is very aggressive. For 1s anything 5 and up is game I think.

MODE 3 - ADPC BOOST setting for active motor timing. It's software will read your RPM, throttle position, and current and make adjustments from their. Setting 1 - 10 implies 5 degree increments (if most systems top out approx 60 degrees) then most people run 30 - 40 degrees of boost which means any setting between 6 and 8 should work.

So I understand where you're coming from but I've great success with my previous LRP ESC's that I was willing to give the Comp V2 a chance.....I will be comparing it all to my MMPro 1 Cell and will post pictures when it arrives.

As suggested I will start my rollout at 70mm for my Fantom Duo 3 17.5 Spec motor.

Keep talking guys...MORE INFORMATION!
I have both the SXX SS and the SXX Comp.
Both are great.
The SXXSS does fit under the lowest bodies without any issues.
Hard part is to route wires so they don't interfere with anything.

Work on your infield skills, and you may not be too far off the pace.
It's still a drivers class.
__________________
--> 12th scale Information Source <--

"Men do not quit playing because they grow old; they grow old because they quit playing."
― Oliver Wendell Holmes Jr.
RedBullFiXX is offline   Reply With Quote
Old 06-18-2011, 01:34 AM   #43
Tech Regular
 
Join Date: Aug 2007
Posts: 399
Default rollout required

Classes for the IIC have just been announced for WGT 1S 13.5 blinky Looking for a rollout.
X12 2 dot insert and 72mm has been suggested any opinions.
__________________
MB Models Leeds,RC4LESS,Troy McKune
V-DEZIGN CR5 ,LRP SXX, CRC cells,
tellan is offline   Reply With Quote
Reply



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 06:43 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