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Old 03-07-2009, 06:46 PM   #571
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Old 03-24-2009, 07:28 AM   #572
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Default SP12X Rear Track Width

Hi All

I was wondering what is the maximum rear track width people have been using with the US Axle and a Brushless setup that requires the use of a standard 64p pinion?

I noticed with a 1mm installed on each side of the axle carrier, that the pinion barely makes contact properly with the spur. If it does make contact, it may be lopsided when rotating.

Thanks
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Old 03-24-2009, 10:24 AM   #573
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Originally Posted by rinkrat99 View Post
Hi All

I was wondering what is the maximum rear track width people have been using with the US Axle and a Brushless setup that requires the use of a standard 64p pinion?

I noticed with a 1mm installed on each side of the axle carrier, that the pinion barely makes contact properly with the spur. If it does make contact, it may be lopsided when rotating.

Thanks
Hi,

In front we drive 168mm and in the rear we drive 170mm

Grts Ollie
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Old 03-24-2009, 10:43 AM   #574
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Quote:
Originally Posted by rinkrat99 View Post
Hi All

I was wondering what is the maximum rear track width people have been using with the US Axle and a Brushless setup that requires the use of a standard 64p pinion?

I noticed with a 1mm installed on each side of the axle carrier, that the pinion barely makes contact properly with the spur. If it does make contact, it may be lopsided when rotating.

Thanks
What motor/pinion brands are you using? With the big gears that are normally required for brushless motors people are shortening the motor shaft and using the Niftech pinion extender. http://www.niftech.com/catalog.php?mode=4000 This lets you use bigger pinions from Robinson, PRS, etc. and still have it line up correctly with the spur.

-James
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Old 03-24-2009, 10:56 AM   #575
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Hi,

we drive:
front 168mm and in the rear 172mm with Jaco Prisms.
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Old 03-24-2009, 02:12 PM   #576
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Hi,

we drive:
front 168mm and in the rear 172mm with Jaco Prisms.
172mm is to width, you'll have no more steering.
We always drive 170mm in the rear 172mm is for outdoor asphalt.

Greetings Ollie
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Old 03-25-2009, 01:03 PM   #577
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OllieRDX

do you mean that a 170mm width is enough for carpet?
We always drove the 172mm and had enough steering.
We will try the 170mm.
Thanks man.

Mike
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Old 03-25-2009, 11:48 PM   #578
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OllieRDX

do you mean that a 170mm width is enough for carpet?
We always drove the 172mm and had enough steering.
We will try the 170mm.
Thanks man.

Mike
Hi Mike,

Yeah 170mm is for carpet racing, it gives you allot more corner speed then 172mm. 172mm is make the car to stable and to sloppy to steer in.
Try 170mm and you'll be faster. :-)

Greetings Ollie
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Old 04-10-2009, 09:46 PM   #579
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Default Corally Front End

Hi all

Picked up a second 12X for 13.5 Carpet and ran the 17.5 this past week with CRC FE and it picked up over 0.7 sec per lap over my SP12G3 with brushed motor.

On the 13.5 car, I am switching to the Corally FE to use the Corally wheels but when I assembled the FE it appears the arms are hitting the damper posts on both sides. Anyone have this issue before?

See the attached pic right arm specifically

Thanks
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Old 04-10-2009, 10:08 PM   #580
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Hi,
you have assembly wrongly. The whole orientation is wrong, turn it over 180 degree and you should be fine.


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Originally Posted by rinkrat99 View Post
Hi all

Picked up a second 12X for 13.5 Carpet and ran the 17.5 this past week with CRC FE and it picked up over 0.7 sec per lap over my SP12G3 with brushed motor.

On the 13.5 car, I am switching to the Corally FE to use the Corally wheels but when I assembled the FE it appears the arms are hitting the damper posts on both sides. Anyone have this issue before?

See the attached pic right arm specifically

Thanks
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Old 04-13-2009, 02:57 PM   #581
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If 170mm track width increases corner speed over 172mm Ollie, how narrow can you go before it starts to hurt corner speed and handling. I was having a similar discussion the other day with a mate, my SP12M Euro runs about 166/167mm rear track width. My mate who i trust said running the 12X us rear axle and us wheels which are 2mm wider than corally's would help alot in corners speed.
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Old 04-18-2009, 10:23 PM   #582
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Default Corally front end

Hello guys,

Why most of you go with A/E, CRC or Corally Wc front end???

Is that due to easy share of information as almost everybody uses this kind of front end or is the dynamic strut front end proven to be really faster than original SP12X front end????
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Old 04-19-2009, 04:10 AM   #583
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AE front end all the way. The Corally front end is just plain difficult to race with (hasn't ever had a good result) and I feel that the CRC front end gives too much understeer. All these things were tried in our National series, and everyone who made the top twenty ended up with the AE front end. HTH
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Old 04-19-2009, 09:24 PM   #584
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Hi Slower One

I am gonna do a Corally FE and compare the results with my other Gen-X FE. I really am trying to use up the set of Corally tires with this car first.

What I did find was something was drilled wrong on the US Chassis cause as you can see in my posts, the center of the arm is not centered on the post. I had to elongate the hole to make it work.

Any idea what function the o-ring under arm does?
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Old 04-20-2009, 11:27 AM   #585
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If anyone is interested in a spare car or spare parts I've got one of these for sale. I purcahsed it in January for the snowbird nationals. I ran it for 3 battery packs for practice thats it. I wasnt able to make it down to florida to the snowbirds and its been sitting on my racing shelf ever since. It will come with two sets of CRC pro cut tires and an Associated front end. I just dont need it collecting dust anymore. I'll take a huge loss on it for $110 shipped if anyone wants it. I have pics. [email protected]

Thanks,
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