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Old 05-15-2014, 11:39 PM   #901
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Originally Posted by PutAwayWet View Post
Looks pretty quick to me.

Not to say that the high voltage high turn combo isn't interesting. But slow, it's not.

https://www.youtube.com/watch?v=DJ0uWybYH1Q
s


It's fast alright, but the video you're watching is of the top tier drivers at that track. So their batteries and motors are being pushed to the limits.
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Old 05-16-2014, 02:54 AM   #902
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I mentioned the chances of breaking is minimal.

Tire wear

Okay, I would say tire wear is reduced slightly. But, I can run one set of tires in a day 3 heats and qualifier without wearing them down to the rim. That's with tires trued at 44 front and 45 rear. Total laps would be in the 200-250 range before the tires are carpet worthy.

The above statements are just observations I have made while running both classes.
Yes but compared to what 1 cell version of 1/12th scale? Based on the video and what I've seen in F1 it looks like 2 cell 21.5 1/12th scale is moving at mod speeds. At the very least it looks significantly faster than 1 cell 13.5.
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Old 05-16-2014, 03:13 AM   #903
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Yes but compared to what 1 cell version of 1/12th scale? Based on the video and what I've seen in F1 it looks like 2 cell 21.5 1/12th scale is moving at mod speeds. At the very least it looks significantly faster than 1 cell 13.5.
21.5/2s gives almost exactly the same power as 10.5/1s.
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Old 05-16-2014, 05:45 AM   #904
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Thanks for your input InspGadgt

I too race F1 2 cell 21.5, but on foam tires . Obviously, you cant compare lap times with rubber tire F1 with 1/12th. However, I can tell you this. I run both F1 foam and 1/12th at the same track using the same motors. I can say with confidence the lap times only differ by 0.5-0.7 a lap. Yes, the 1/12th much lighter, faster and nimble in the infield, but the speed difference isn't all that much on the straight. The F1 in the infield is quite cumbersome and not as nimble in the handling department which results in slower lap times. But, it's straightway speed isn't far off from 1/12th. That being said, from my experience running F1 foam, I think it would easy for someone to transition from F1 21.5 to 1/12 21.5 with relative ease. Also, if someone can drive a F1 21.5 rubber with ease than 1/12th 21.5 will be a breeze to handle.


I mentioned the chances of breaking is minimal.

I can say I've broken more parts on my F1 than my 1/12. This is inherent with an open wheel design such as F1. The only part I've broken on my 1/12 is a pillow ball on my 1/12th. But, every driver is different and every circuit is different. I run on an outdoor asphalt track with no wood boards, just concrete curbing.

Tire wear

Okay, I would say tire wear is reduced slightly. But, I can run one set of tires in a day 3 heats and qualifier without wearing them down to the rim. That's with tires trued at 44 front and 45 rear. Total laps would be in the 200-250 range before the tires are carpet worthy.

The above statements are just observations I have made while running both classes.
Sounds like a fun class. I'd love it if the standard was 2S for anything smaller than 1/8th scale in electric on-road.
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Old 05-16-2014, 06:49 AM   #905
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I had no idea that brushless goes all the way down to 25.5 now.
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Old 05-16-2014, 06:53 AM   #906
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higher voltage the better for all classes as far as i can see, also current voltage limitations also create battery wars with people looking for any edge whereas higher voltages can get away with lower spec batteries, for instance in the 1/10 pro 10 class i run in if you dont have a 90c 2s lipo your gone before you start whereas a 40 to 60c 3s or heaven forbid 4s would suffice, yeah sure after a while it would probably happen again with 3 or 4 s in this situation but would not be as critical as in 2s 1/10 classes. also if people reckon 2s 21.5 is too fast for novice 1/12th fair enough then bring in control brushed mabuchi motors or something like that, this will also be cheaper to run and closer racing and surely slow enough, if its still too fast then simply limit the gearing. maybe i am wrong so don't crucify me for my opinion but it looks like i am not alone in believing in higher voltages for 1/12th and other classes, changing is the hardest bit because everyone is invested in there own classes, and we don't like change.
the wheels can only turn slowly on this one i think.
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P.s zerodefect has posted while i was creating my post with some great info about 25.5 t motors being available , this is also another option if 21.5 is too fast

Last edited by oldenuff; 05-16-2014 at 06:56 AM. Reason: new post
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Old 05-16-2014, 06:57 AM   #907
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Brushless motors go down to 30.5 and they are perfect for 1/12 beginners. I'll take some video of them this weekend for you. I'll also take video of 21.5 1/12th and 21.5 F1.
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Old 05-16-2014, 07:02 AM   #908
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I guess youve been hiding under that off road rock to not know that you can get 25.5 motors.
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Old 05-16-2014, 07:12 AM   #909
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what the a 30.5t brushless motor surely that would be slow enough but i have never seen one where i live ( Australia ) but we do usually get things last...you see guys there is a solution!
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Old 05-16-2014, 07:14 AM   #910
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What do people think are the most prevailent factors which influence the whether somebody decides to try racing 1/12 scale or not?

I guess the answers to this question could be different depending on whether the people in question are already experienced RC competitiors, or are completely new to the world of RC.

If you were stood on the outside and looking to come into 1/12 scale, what is attractive about it and what puts you off?
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Old 05-16-2014, 07:18 AM   #911
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Originally Posted by theproffesor View Post
I guess youve been hiding under that off road rock to not know that you can get 25.5 motors.
Yup. Open 1/8th E, and 1/5th scale SCT.
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Old 05-16-2014, 07:28 AM   #912
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Originally Posted by oldenuff View Post
what the a 30.5t brushless motor surely that would be slow enough but i have never seen one where i live ( Australia ) but we do usually get things last...you see guys there is a solution!

http://www.redrc.net/2014/02/kawada-...shless-motors/

Kawada and a few other companies offer 30.5. The speed is perfect for beginners. Everyone runs the same motor, same timing, same lipo, same tires, same rollout and same chassis Kyosho 1/12 LM. The racing is extremely close regardless of your expertise. Close racing makes for great fun and builds the confidence in the drivers ability to navigate the course. Which will give them confidence in moving up to faster racing classes.
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Old 05-16-2014, 07:30 AM   #913
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Originally Posted by oldenuff View Post
higher voltage the better for all classes as far as i can see... higher voltages can get away with lower spec batteries
This doesn't apply in our case. The 2s batteries used in 1/12 scale are the same size and weight as 1s cells, so the energy storage is the same. If the motor wind is changed to maintain the same power level (i.e. 1s/10.5 versus 2s/21.5) then the battery will see the same C-rate load.

The only thing that the higher voltage buys for performance is that lighter gauge wires may be used. For a 1/12 scale car, that's a good thing!
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Old 05-16-2014, 07:37 AM   #914
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Originally Posted by Mark Stiles View Post
If you were stood on the outside and looking to come into 1/12 scale, what is attractive about it and what puts you off?
I'm new.

+ultra fast
+clean
+indoor
+cheap
+attention to detail is fun tuning
+small tool boxes (my 5th scale box is bigger than a Smartcar)
+world class racing from the very beginning of RC.
+cool looking cars
+stupid easy repairs and dissassembly

-hard pileup crashes
-rules
-rules changing often can be annoying (1/8th has been the same for about my entire life)
-attention to detail can get tedious eventually
-tracks never have elevation changes, kinda boring
-chemical smells (back in the day)

The speed is a plus to us. We're hoping that off road will seem slower when we return to it in the spring. The sooner I can get to mod without being a hack or roadblock the better.

Last edited by Zerodefect; 05-16-2014 at 07:48 AM.
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Old 05-16-2014, 07:42 AM   #915
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Originally Posted by Mark Stiles View Post
What do people think are the most prevailent factors which influence the whether somebody decides to try racing 1/12 scale or not?

I guess the answers to this question could be different depending on whether the people in question are already experienced RC competitiors, or are completely new to the world of RC.

If you were stood on the outside and looking to come into 1/12 scale, what is attractive about it and what puts you off?
1 - close racing, cool looks and handling.
2 - simple maintenance
3 - setup and build assistance (my first set of tires were ruined because I glued them like sedan tires #fail)
4 - cost of the kit, motor, esc, battery, tires, body.
5 - everyone following the rules
6 - everyone helping each other out i.e setup assistance ect.
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