R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 03-09-2012, 06:09 PM   #91
Tech Master
 
Alex C's Avatar
 
Join Date: Feb 2005
Location: On a ship in the warm seas with no sail !!!
Posts: 1,638
Trader Rating: 50 (100%+)
Default

For those of you out there running Mod 1/12 Scale here is my base setup, feel free to utilize and provide any feedback ............ all the best!!!

A few build tips specific to the car are explained as per the following sections below.



Front End:
  • First thing I would recommend to polish both king pins with mothers polish.
  • On both of the of the Composite Suspension Arm Front Lower Mounts I would remove a bit of the plastic that is molded into the arm. Reasoning for this is because on both Left and Right Arm you are going to add a total of 3mm spacers on both sides to take away camber gain on both arms.
  • Additionally I would remove all shims as recommeded per the instruction manual and place them on top of the upper ball joint.
  • Further I would preload the gold springs by at lease one .2mm shim on both sides. Thus with the car at rest you should have no droop in the front end what so ever.
  • I would use the 5* Initial setting of the reactive castor block.
  • On both steering blocks I would shim both links with a total of 3mm spacers to elivate unwanted bump steer in the car.
  • Dependent upon which servo you plan on utlizing (KO Propo 951-ICS) preferably. I would mount the servo on the left most side of the chassis (same side as the battery).
  • Additonally I would shim the servo in a manner in which both turnbuckles are about even or a bit forward in relationship to the front end. In other words the turnbuckles are angling back slightly.
Center Shock
  • Plan on purchasing the NEW Black Shock Spring C=2.1.
  • I would recommend to start with atleast Xray 700Cst for the center dampner.
  • Shock build should be as per the manual, initial rebound set at 50%.
  • Place atleast 2.5mm of shim on the front shock mount, and 4mm on the rear of the shock ball mounting to the rear upper pod plate.
Side Links / Center Link
  • Plan on polishing all of the steel pivot balls with Mother Polish yet again to fine mirror image.
Side Dampner
  • I would recommend to use 7K.Cst on the dampner and apply as mentioned per the manual.
Rear Pod Plate
  • Shim atleast 3mm of black shims on both sides of the upper pod plate, In order to provide an angled side dampner angle thus giving a more smoother softer side to side motion of the pod plate.
Final Setup
  • Front Spring "Gold" C=3.5 or Associated .20
  • Front Ride Height 3.6mm
  • Rear Ride Height 3.8mm
  • Pod Droop 1.0mm
  • Rear width 171.5mm
  • Front Camber -1.5
  • Toe Out .25 -.5mm out Right / Left.
  • Parma Magenta Front 41mm
  • Parma Magenta Rear 43mm
  • Side Springs either Associated "Black" Springs or Xray Kit Silver Side Springs.
  • The most important thing to remember is not to preload the side springs, just set them with the car ready to race and turn each screw down evenly just when they start to touch and provide a quarter turn.
  • Check and set final left / right tweak.
Attached Thumbnails
TEAM XRAY X12-img_0053.jpg   TEAM XRAY X12-img_0054.jpg   TEAM XRAY X12-img_0055.jpg   TEAM XRAY X12-img_0056.jpg  
__________________
Alex Cortez
Thank You to all My Sponsors
Ko Propo USA / RC America - Xray - Hudy / Max Power Engines / VP PowerMaster Fuel / Team Espo - "Lay it down Prop"!!!!

Last edited by Alex C; 03-10-2012 at 01:18 PM.
Alex C is offline   Reply With Quote
Old 03-10-2012, 12:30 PM   #92
Tech Regular
 
Join Date: Jan 2004
Location: New Zealand
Posts: 358
Trader Rating: 1 (100%+)
Default

Hi Alex,

Thanks for the info, much appreciated.
These settings are specific to carpet or asphalt or both?

Cheers
Andrew
Lycan is offline   Reply With Quote
Old 03-10-2012, 01:17 PM   #93
Tech Master
 
Alex C's Avatar
 
Join Date: Feb 2005
Location: On a ship in the warm seas with no sail !!!
Posts: 1,638
Trader Rating: 50 (100%+)
Default

Quote:
Originally Posted by Lycan View Post
Hi Alex,

Thanks for the info, much appreciated.
These settings are specific to carpet or asphalt or both?

Cheers
Andrew
Andrew .............. the settings provided seems to work on a fast flowing technical medium to low traction carpet. I have not had the opportunity to drive the car in a high traction track yet.

Although please feel free to reply back once you tried the setup and the conditions.

Kind Regards,
__________________
Alex Cortez
Thank You to all My Sponsors
Ko Propo USA / RC America - Xray - Hudy / Max Power Engines / VP PowerMaster Fuel / Team Espo - "Lay it down Prop"!!!!

Last edited by Alex C; 03-10-2012 at 11:34 PM.
Alex C is offline   Reply With Quote
Old 03-10-2012, 02:56 PM   #94
Tech Adept
 
Join Date: Oct 2011
Location: Bronx, NY
Posts: 163
Default

I feel like my car scrubs soooo much speed in tight corners, what can i try to stop this ?
Shortbusallstar is offline   Reply With Quote
Old 03-15-2012, 09:48 AM   #95
Tech Adept
 
Dread Pirate's Avatar
 
Join Date: Jun 2010
Location: OC/RC Raceway
Posts: 248
Trader Rating: 15 (100%+)
Default

I raced my X12 for the 1st time last weekend and it really handled great; didn't have time to tune, just ran the stock setup on a good size, good traction carpet track.

A couple questions:
1) I struggled with getting the 4 clip stock servo saver together and it popped apart when hit during the 1st race. I went back together I think ok, but has anyone else had this problem?

2) Stock built, the car is pretty heavy at 740+g (min weight at IIC is 730g). Would like to add lightness. Not that its a lot of weight savings, but has anyone converted to titanium screws/ballstuds? Which ones? My cursury searches didn't find a set, and not all of the individual sizes.

Thanks,
Jeff Smith
__________________
"We face each other as God intended. Sportsman-like. No tricks, skill against skill alone." -Fezzik
Dread Pirate is offline   Reply With Quote
Old 04-11-2012, 10:32 AM   #96
Tech Addict
 
tnewlon's Avatar
 
Join Date: Jan 2012
Location: Glen Carbon, IL
Posts: 616
Trader Rating: 15 (100%+)
Default

Putting my new X12 together. My question is this:
Has anyone ran the JR Z3650 servo? If so, how did you mount it? Noticed it is smaller than the futaba in my old 1/12 scale and does not fit mounting holes. Please help (I do not want to glue in car)
__________________
Tom Newlon

Xray X1, X10
Tamiya RM01
ProlevelRC * ProlevelRC Service
tnewlon is offline   Reply With Quote
Old 04-15-2012, 06:32 PM   #97
Tech Regular
 
Mr.T3's Avatar
 
Join Date: Jun 2010
Location: Queensland
Posts: 273
Trader Rating: 3 (100%+)
Default

Hi, just wondering if anyone has a base setup for an outdoor asphalt track medium to low traction with mod class. Thanks
__________________
B-rad

VBC DO8... Sanwa M12... Hudy... Muchmore Racing... Roche...Volante...
Mr.T3 is offline   Reply With Quote
Old 04-26-2012, 09:19 PM   #98
Tech Regular
 
Join Date: Jan 2004
Location: New Zealand
Posts: 358
Trader Rating: 1 (100%+)
Default

I'm looking for a similar setup too... but was wondering if it would be a safe assumption that todays modern 1/12th cars are designed for carpet rather than asphalt?
Most talk about extra stiff chassis which is great if you have traction and most primarily come with a carpet setup (springs, shocks, oils, etc) out of the box.
I know it would be possible to get a 1/12th to work OK on low traction asphalt but with manufacturers now ignoring asphalt as an option, will the cars ever reach their full potential.
What made me ask is the aftermarket stuff a japanese company released for the CRC:
http://www.redrc.net/2007/08/crc-gen...pec/#more-5212
Thinner chassis, extended wheelbase, all designed to work with low traction tracks.
Lycan is offline   Reply With Quote
Old 04-27-2012, 08:56 AM   #99
Tech Master
 
Car Breaker's Avatar
 
Join Date: Apr 2004
Location: Grave Yard
Posts: 1,261
Trader Rating: 10 (100%+)
Default

I run medium traction asphalt outdoor track, I have 1/12 of CRC, Kyosho and X Ray. I usually run AE 0.18 front spring with no oil on front kingpin, 1 degree toe out and camber with 5 degree active caster. AE blue spring and 5k~10k oil in the tubes, 35~40 oil in shock, tire of the choice of our track is double pink front and pink rear, maybe you can try start with that.
__________________
Xray X12 2015
ARC R10 ATS
Car Breaker is offline   Reply With Quote
Old 05-31-2012, 05:12 PM   #100
Tech Master
 
silvalis's Avatar
 
Join Date: Aug 2011
Location: Brisbane
Posts: 1,545
Trader Rating: 29 (100%+)
Default

does anyone know what is the largest pinion that can be used with the xray 78t spur? Any chance of fitting a 46t?
silvalis is offline   Reply With Quote
Old 06-01-2012, 09:55 AM   #101
Tech Regular
 
Join Date: Jun 2007
Posts: 325
Default

Quote:
Originally Posted by silvalis View Post
does anyone know what is the largest pinion that can be used with the xray 78t spur? Any chance of fitting a 46t?
Not sure, but if it doesn't just get a 71 spur from PRS.

Steve Dunn
sdunnmcp is offline   Reply With Quote
Old 06-16-2012, 04:49 AM   #102
Tech Master
 
silvalis's Avatar
 
Join Date: Aug 2011
Location: Brisbane
Posts: 1,545
Trader Rating: 29 (100%+)
Default

I'm having issues with the car pulling hard to the left under acceleration. Thinking its the diff, but have rebuilt it twice.

Any suggestions?
__________________
2013 QLD Champion Potato Sack Racer
silvalis is offline   Reply With Quote
Old 06-16-2012, 09:35 AM   #103
Tech Master
 
ByteStream's Avatar
 
Join Date: Jan 2010
Location: 5280 Raceway
Posts: 1,145
Trader Rating: 2 (100%+)
Default

Quote:
Originally Posted by silvalis View Post
I'm having issues with the car pulling hard to the left under acceleration. Thinking its the diff, but have rebuilt it twice.

Any suggestions?
What motor are you running? Just curious, because you'll need to be more gentle with the throttle with a mod motor as opposed to something like a 17.5, wheel slip can be a cause.

Are you pulling while going straight? or before/after a turn?

I would go through the following list as a check:

Is the car balanced?
Is the car tweaked?
Is the camber the same left/right?
Is the castor the same left/right?
Is the toe equal left/right?
Is there any binding? side-links? rear pivot?
Is one of your front springs colapsed?
Is your front droop the same left/right?
Is the servo loose?
Are your tires the same size in the front?
Are you using the same number of shims for ride height in the front left/right?
Are you using the same number of shims on the rear axle left/right and is it centered?
__________________
RCAmerica | Xray | Hudy | KO Propo | Hobbywing HWNA | R1Wurks | BSR Tires
5280 Raceway - www.5280raceway.com
MILE HIGH INDOOR CHAMPS April 19-22nd 2018 @ www.milehighindoorchamps.com
ByteStream is offline   Reply With Quote
Old 06-16-2012, 06:12 PM   #104
Tech Master
 
silvalis's Avatar
 
Join Date: Aug 2011
Location: Brisbane
Posts: 1,545
Trader Rating: 29 (100%+)
Default

Quote:
Originally Posted by ByteStream View Post
What motor are you running? Just curious, because you'll need to be more gentle with the throttle with a mod motor as opposed to something like a 17.5, wheel slip can be a cause.

Are you pulling while going straight? or before/after a turn?

I would go through the following list as a check:

Is the car balanced?
Is the car tweaked?
Is the camber the same left/right?
Is the castor the same left/right?
Is the toe equal left/right?
Is there any binding? side-links? rear pivot?
Is one of your front springs colapsed?
Is your front droop the same left/right?
Is the servo loose?
Are your tires the same size in the front?
Are you using the same number of shims for ride height in the front left/right?
Are you using the same number of shims on the rear axle left/right and is it centered?
it's a Ion3 13.5/VTX1 currently in blinky. It's pulling while going straight, no steering input.

I'm pretty sure most of the above is fine, but looking at your list I'll have to go over it with a fine tooth comb.

I'm still leaning towards it being the diff for some reason. Any hints on what to look for in a ball diff that pulls unevenly?
__________________
2013 QLD Champion Potato Sack Racer
silvalis is offline   Reply With Quote
Old 06-16-2012, 06:49 PM   #105
Tech Master
 
ByteStream's Avatar
 
Join Date: Jan 2010
Location: 5280 Raceway
Posts: 1,145
Trader Rating: 2 (100%+)
Default

Quote:
Originally Posted by silvalis View Post
it's a Ion3 13.5/VTX1 currently in blinky. It's pulling while going straight, no steering input.

I'm pretty sure most of the above is fine, but looking at your list I'll have to go over it with a fine tooth comb.

I'm still leaning towards it being the diff for some reason. Any hints on what to look for in a ball diff that pulls unevenly?
If you've rebuilt it correctly a couple of times so far .. then I'd look to the list I provided. Just in case though ..

1. Make sure the balls don't have flat spots (I use ceramics)
2. Make sure the rings are not grooved too badly (new rings or flip them or sand them.
3. Make sure the bearings spin freely.
4. Make sure the thrust washer is installed correctly.
5. Make sure the cone washers are installed correctly.
6. I use associated silicon diff grease (clear grease- red label).

Alot of times, a crash can knock some toe/camber into the car .. put it on a setup station to check.

Also sometimes, the front end can get a little tweaked, loosen the screws that hold the front end on, and re-tighten them equally, alternating screws.

Do you rotate your front tires, left/right ever? every run? doing so, will give you more tire life as wel.
__________________
RCAmerica | Xray | Hudy | KO Propo | Hobbywing HWNA | R1Wurks | BSR Tires
5280 Raceway - www.5280raceway.com
MILE HIGH INDOOR CHAMPS April 19-22nd 2018 @ www.milehighindoorchamps.com
ByteStream is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
New TEAM WAVE racing brushless system TEAMWAVE Electric On-Road 1930 07-25-2014 07:12 AM
XRAY T2'008 US Competition RTR w/lots of upgrades and more - LQQK! jt415gz R/C Items: For Sale/Trade 35 08-06-2010 03:13 PM
LRP Sphere TC - DX3R - X12 4.0T jt415gz Electric On-Road 6 07-06-2009 03:33 PM



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 10:36 PM.


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