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This is a place to share knowledge related to 1/12th scale racing. It is not to be used for conversations.

1/12th Scale Pan Car Kits:

Click links to go to manufacturer product page. If any are missing please add them!

Associated 12R6
https://www.teamassociated.com/cars_.../Factory_Team/ Jul 2017 release
DISCUSSION THREAD - Team Associated 12R6

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Old 09-16-2018, 09:16 PM
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Originally Posted by 1/8 IC Fan View Post


Now we are getting some Aero wheels from Arena 12, reminds me of the old aero discs on BBS Wheels.

Red RC ? RC Car News Ľ Arena 12 1/12th scale pan car wheels
where can foam donuts be sourced for total do it yourself? What for glue? Rubber cement?
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Old 09-16-2018, 09:26 PM
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Originally Posted by 1/8 IC Fan View Post


Now we are getting some Aero wheels from Arena 12, reminds me of the old aero discs on BBS Wheels.

Red RC ? RC Car News Ľ Arena 12 1/12th scale pan car wheels
I am confused. These Aero wheels would need to have a left and a right wheel, in order for one to not be drawing air under the car while the other is blowing it out.
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Old 09-16-2018, 09:32 PM
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Originally Posted by JeffofSpace View Post

where can foam donuts be sourced for total do it yourself? What for glue? Rubber cement?
Ulti:
Fronts doughnuts: https://ultitires.com/index.php?rout...47_173_174_176
Rear doughnuts: https://ultitires.com/index.php?rout...47_173_178_180

Glue: https://www.amainhobbies.com/aka-pre...ka38001/p28069

Video on how to glue 1:12 tires:

Yokomo tires video:
Yokomo front wheels: https://www.amainhobbies.com/yokomo-...x-274y/p585220
Yokomo rear wheels: https://www.amainhobbies.com/yokomo-...x-284y/p585222
Yokomo front tires: https://www.amainhobbies.com/yokomo-...4661wx/p585203
Yokomo rear tires: https://www.amainhobbies.com/yokomo-...4622wx/p585202

*Note: the Yokomo wheels above have a standard offset.
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Old 09-16-2018, 09:37 PM
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Originally Posted by DesertRat View Post
I am confused. These Aero wheels would need to have a left and a right wheel, in order for one to not be drawing air under the car while the other is blowing it out.
Apparently they are one direction, so you would not be able to rotate tires.

SAMOSTATN… DISKY ARENA 12 TCA 1:12
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Old 09-18-2018, 09:34 PM
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Old 09-19-2018, 01:32 PM
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Originally Posted by fathead View Post
It isn't that difficult.
On a macpherson strut type suspension (inverted or not) the king pin inclination or steering axis inclination affects the roll centre position
This discussion has been had on here before, a bit over 10yrs ago in fact, here is a link, has quite a few illustrations
https://www.rctech.net/forum/electri...ml#post4298057
Discussion starts at post 1949 and post 1955 has a good sketch
on the oval side of things people started running 4 ish deg of camber several years ago and then cut 2 deg in the tire. There was a discussion on how it changed contact patch. IMHO the real change was it lowered the roll center as the king pin angle was now 4 deg. The 2 deg in the tire was just to speed break in. I would guess it hasn't been used in 1/12 scale because it would make the cars turn too hard. If xenon made 2 deg inline axles I would have tried 4 deg king pin angle to see if 2 deg chamber and 2 deg kpi work the same as 4 deg chamber and 2 deg cut tire.
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Old 09-27-2018, 10:06 AM
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New Schumacher Eclipse 2

Red RC ? RC Car News Ľ Schumacher Eclipse 2 LMP12 1/12th scale pan car
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Old 09-27-2018, 12:42 PM
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Originally Posted by 1/8 IC Fan View Post
Hopefully the front end is more durable than the Kawada front end on the last generation Eclipse. This new version also looks like it will be heavier than the last, which is not a good thing. Even with a Pro-Lite body my gen 1 Eclipse was 752 grams ready to race (with titanium screws). By comparison, my Roche P12 2016 was 712 grams with the same electronics and body.
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Old 09-30-2018, 04:37 PM
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Time to delve into the 1/12 collective again -

Going to be running 13.5 1s for the first and, most likely, only time so looking for a bit of advice on a motor and gearing - track looks to be a medium sized outdoor track (I've never visited it before so don't have a lot of knowledge), main straight looks to be about 40m if you include the sweeper in the middle.

Also need advice on using Mighty Gripper 3 Red - its the control additive for the event with a saucing station so can only do tyres etc there - some ideas on how long to leave it for etc would be appreciated. (Don't bother including info using other cleaners or additives as not allowed)

Thanks
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Old 09-30-2018, 09:09 PM
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Hi Everyone,

Having some issues with my x12 Ď18 with a 6.5 on gray (will prob be magnified on upcoming black). The car is pushing hardcore off power. Iíve tried less sauce...inner ring only...but then it pushes more. Less camber same issue. With more camber or sauce, it turns in well, but then traction rolls at mid corner exit. In fact, it turns in well in all cases...it is right after entry push.

Donít know where to go first. Was 4 laps down from last season. Same car was on asphalt all summer.

Current:

caster 7
camber 1-1.5
toe out 1
sauce inner ring to 1/2 tire
center spring xray black (do have Xray kit gold)
center oil 425
Kit front and side springs
10k tubes
rear droop 1.5
lilacs all the way around (last indoor season on same gray were perfect)
diff mid tight
kingpins 20k
ride 3.8 front 4.25 rear
Aluminum chassis
sxt 3 sauce required

Thanks much!

Last edited by JeffofSpace; 09-30-2018 at 09:22 PM.
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Old 09-30-2018, 09:35 PM
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If you havenít done so already, you could/should try supergluing the outer sidewall of the front tires. These days, thatís pretty much standard issue
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Old 10-01-2018, 05:25 AM
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Originally Posted by JeffofSpace View Post
Hi Everyone,

Having some issues with my x12 Ď18 with a 6.5 on gray (will prob be magnified on upcoming black). The car is pushing hardcore off power. Iíve tried less sauce...inner ring only...but then it pushes more. Less camber same issue. With more camber or sauce, it turns in well, but then traction rolls at mid corner exit. In fact, it turns in well in all cases...it is right after entry push.

Donít know where to go first. Was 4 laps down from last season. Same car was on asphalt all summer.

Current:

caster 7
camber 1-1.5
toe out 1
sauce inner ring to 1/2 tire
center spring xray black (do have Xray kit gold)
center oil 425
Kit front and side springs
10k tubes
rear droop 1.5
lilacs all the way around (last indoor season on same gray were perfect)
diff mid tight
kingpins 20k
ride 3.8 front 4.25 rear
Aluminum chassis
sxt 3 sauce required

Thanks much!
Originally Posted by vafactor View Post
If you havenít done so already, you could/should try supergluing the outer sidewall of the front tires. These days, thatís pretty much standard issue
I don't know much about mod setup, but the kit front spring is pretty hard, Gold (C=3.5). We run much softer in the spec classes, Silver (C=2.0). You could try either the Grey (C=3.0) or Black (C=2.5) to see if this is the right direction for you. I think that may help increase steering and calm the tipping/rolling in the center of the corner. As the Godfather mentioned, you definitely want to make sure your glue is good on the front sidewalls.
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Old 10-01-2018, 06:29 AM
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Way way way to much caster.. Should be 4 at the most. It will make a huge difference. And .5 camber on black carpet, with 1.5 its going to hike and/or roll
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Old 10-01-2018, 09:10 AM
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JeffofSpace,
Of your listed setup the item I see that would cause traction roll is your ride height. Try 3.2 front and 3.4 rear. Also make sure your tires aren't too big. On either carpet I found I don't like to start any bigger than 42mm front and 43mm rear.

When you get on the black carpet make sure you glue your front tire sidewalls! With that done, don't shy away from high camber numbers. I run Mod (3.5 blinky) on black carpet, and will sometimes run my camber as high as 2.5į, per my Hudy setup station, to get even tire wear.

As a last thought, you could have an issue with pickup so make sure you clean your tires between runs. I'm lazy and simply apply the SXT to the tires and then scrub them with a blue towel, but it does the job.
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Old 10-01-2018, 04:28 PM
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Thanks, Everyone!
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