Island Radio Operated Car Club

Racing Topics => 12th Scale Racing => Topic started by: Thargor on September 24, 2013, 11:59:35 PM

Title: Blinky
Post by: Thargor on September 24, 2013, 11:59:35 PM
hey new to the forum, hello im Steve,
looking at getting a 13.5 blinky set up has anyone got any suggestions for esc/motor .. I read somewhere the high rev ones would be a good choice
Title: Re: Blinky
Post by: Falcon on September 25, 2013, 11:23:06 AM
I have a tekin RS esc for sale.
Title: Re: Blinky
Post by: dajracer on September 25, 2013, 12:32:37 PM
What are you going to be using this in. It could make a difference whether you will want a high rpm or high torque motor depending on the usage.
Title: Re: Blinky
Post by: valk on September 25, 2013, 01:16:04 PM
For 1/12th, hobbywin 1s, orca vx1 lrp flow seem to be ideal candidates. Anything with native 1s mode. If your on a budget id look for a used hobbywing 1s 120a esc.
Many escs designed for 2s work in 1s mode via a receiver pack or booster capacitor, such as the tekin.
Tekin is anreasonable esc that a lot of our guys use. Some might move away from it for blinky though as newer escs seem to have a more aggressive feel in blinky.

Motor wise everyone will tell you different. D3.5s are a safe bet but wont be an option for roar racing next year. Im personally waiting on approval of the new orca motors. Ive had good luck with reedy and speed passion as well as lrp. That was boosted though. Might be different for blinky. Its new territory for many of us in 1/12.
Title: Re: Blinky
Post by: Shawn68z on September 25, 2013, 09:29:35 PM
Quote from: valk on September 25, 2013, 01:16:04 PM

Motor wise everyone will tell you different. D3.5s are a safe bet but wont be an option for roar racing next year. Im personally waiting on approval of the new orca motors. Ive had good luck with reedy and speed passion as well as lrp. That was boosted though. Might be different for blinky. Its new territory for many of us in 1/12.

13.5 Turn D3.5's are ROAR Legal.  Only the 17.5's wont be.

Shawn.
Title: Re: Blinky
Post by: BCbud on September 25, 2013, 09:45:09 PM
Hi Steve an welcome to the forums.

Since our indoor track is fairly small and can be quite technical at times a higher torque motor may be a bit better. If you are on a budget the Hobbyking motors work well and the price of about $35 is great. I used one for the most of last indoor season for 17.5 boosted and I had no complaints. As for a speed controller, a Tekin RS would do fine with a $6 voltage booster. Some of the racers are moving to the Orca so there old Tekins will most likely be for sale.

Your best bet is to come out to a indoor race and have a look around and ask any questions that you may have. Everyone is more than willing to offer advice.

We do not enforce ROAR motor rules for club racing as we are just out to have fun. At the one big indoor race we have in January the rules are a bit tighter as are most big races.

Neil.
Title: Re: Blinky
Post by: valk on September 25, 2013, 10:34:37 PM
If budget is a concern, well, even if it isn't, its awfully hard to say no to a $31 speed passion motor. rcmart has been practically giving these away.

http://www.rcmart.com/speed-passion-138135v3-competition-motor-ver3-135r-p-32028.html

a few in the club picked some up recently in various flavors. I got one with my reventon stock system for touring car and was running that last race at Queen alexandra. thought the motor might be a liability due to its very low cost but that thing was FAST. just wish i had more time to figure out proper gearing ect, and had known my axle bearings were being compressed in the rear, slowing the car down.

im on the fence about getting a couple more of the motors. a 4.5 to match my vx1 for 1/12, and a 13.5 for blinky, to be powered by a hobbywing 1s v2.1.

everywhere iv'e read on 1/12 seems to have droves of people moving to hobbywing. some places are selling 2.1's for real cheap as its now discontinued. the 3.1 replaces it and has built in booster and even power cap. of considerable benefit with the tight confines of modern 1/12 cars.

I was going to get two orca vx1s but $200 esc seems a waste for blinky racing. my speed passion reventon stock really seemed to handle blinky touring car very well, so im half on a mission to actively find products i can suggest that help bring the cost of racing down and get more people on the track.
Title: Re: Blinky
Post by: Thargor on September 27, 2013, 03:03:49 AM
Hey thanks for the info.didnt realize I'd get so much response.and yes 12 pan car is the application.
I think I've managed to track down a hobby wing 1s 120 amp for a good priCe so I think I'm going to pull the pin on that pretty quick here.
How much is that tekin RS going for by the way? ;)
Finding the right motor / gear ratio is next on the list. Not raced an on road car for years and never indoor so back to total beginner again. What size gears should I be looking at for a base set up? Fairly small track in nanaimo too...
That speed passion revention for  30 bones sounds awesome. What is the shipping like from rcmart?
Title: Re: Blinky
Post by: Thargor on September 27, 2013, 03:12:20 AM
And thanks for the welcome  ;D
Title: Re: Blinky
Post by: valk on September 27, 2013, 11:30:38 AM
Havent heard very much about speed passion in single cell.  Im sure it would work with a booster. Was thinking of trying on my stock club race but its only 40 amps. Single cell will draw much more than 2s amps wise. 13.5 is considerably over the 166 watts you get from 40a.

A rev pro would prob work.

A tekin rs is worth about $80 onrctech. But you might as well look at a gen2 which is $149 new.

For pancars you measure rollout which is ((tire diameter x 3.14)pinion)/spur. This gives you how many mm the car rolls forward for one motor rev. 75-80mm is where we wanna be we think. Tires come from craig at 47mm and as they wear down to 41/42 mm you need several pinions to keep the gear ratio.
I run 73-78 spurs and 41-49 pinions. 64pitch.
Title: Re: Blinky
Post by: Shawn68z on September 27, 2013, 01:19:39 PM
Quote from: valk on September 27, 2013, 11:30:38 AM
Havent heard very much about speed passion in single cell.  Im sure it would work with a booster. Was thinking of trying on my stock club race but its only 40 amps. Single cell will draw much more than 2s amps wise. 13.5 is considerably over the 166 watts you get from 40a.


No. 1S draws 1/2 the current, and gives half the torque of a 2S.  That's why we can use thinner wire in 1/12 scale.

Hobbywing JustStock is also rated at 45 Amps, and can handle a 8.5Turn at 2S. (With Fan). Running it a 13.5, 1S will be no problem at all.


Shawn.

Title: Re: Blinky
Post by: valk on September 27, 2013, 01:41:54 PM
Thats curious to me shawn. Your probably right but with less voltage available, shouldn't you need more amps to meet the motors wattage requirements?

Too late for me but curious. Might try my stock club in 1s.
Title: Re: Blinky
Post by: Shawn68z on September 27, 2013, 05:56:49 PM
Quote from: valk on September 27, 2013, 01:41:54 PM
Thats curious to me shawn. Your probably right but with less voltage available, shouldn't you need more amps to meet the motors wattage requirements?

Too late for me but curious. Might try my stock club in 1s.

   Amps=Voltage/Resistance   

Resistance of the motor does not change, so, with 1/2 the voltage, you have 1/2 the amperage.    Power = I^2*R.

So by 1/2 the voltage, you end up with closer to 1/4 the power going into the motor.

Shawn.
Title: Re: Blinky
Post by: Thargor on September 28, 2013, 02:49:10 AM
this is information gold.. haha and were bringing good old PI into the equation too!!
im stoked to be running this year.
So why is the ideal rollout 75 - 80mm? is it because of the size of the track ?
im going to be running mainly in nanaimo im not sure if that will make my desired roll out different or not?
Title: Re: Blinky
Post by: Shawn68z on September 28, 2013, 12:52:19 PM
Quote from: Thargor on September 28, 2013, 02:49:10 AM
this is information gold.. haha and were bringing good old PI into the equation too!!
im stoked to be running this year.
So why is the ideal rollout 75 - 80mm? is it because of the size of the track ?
im going to be running mainly in nanaimo im not sure if that will make my desired roll out different or not?

When I goto Nanaimo I would reduce my rollout by 4mm.  (2-3 teeth lower on the pinion).. I try to have my car reach top speed approx 2/3 down the main straight.   If the car is still accelerating at the end of the straight, then you either have too high a rollout, or you don't have enough corner speed coming onto the straight. 
Title: Re: Blinky
Post by: valk on September 28, 2013, 02:09:59 PM
Rollout has everything to do with trial and error. Esc setup, motor setup ect. Brushless motors have different characteristics and you will need to play with different rollouts to figure them out. Most of last season i ran 75-78 with the reedy at our track and 81/82 at speed weekend with my tekin gen2 rpm.