R/C Tech Forums - 1/12 forum

I have had an on-going problem with my Assoc. 12L3, that is the car doesn't want to square-up coming out of turns. It wants to continue to turn as I begin to ease off on the radio wheel.

A thought has crossed my mind that the front end may be binding when the car is under a strong side load, preventing the car from squaring-up coming out of the turn.

Asphalt track (So Cal Raceway) and I currently do not use any lube on the damper plate or on the front suspension componets.

My Question is this: Do you serious 12 scale guys lube the kingpins to prevent binding? Does this issue sound like something that is caused by a lack of lube?

What is the therory for lubing the kingpins and damper plate?

I see CypressMidwest on here....always enjoyed you ideas! Any comments?

We only use the lube on king pins and damper plates or tubes to dampen the spring action of those parts. thicker lube to slow chassis roll, etc. It sounds like either the front end is binding, or possibly a binding T-bar pivot. It could also be the damper plates hanging up on the upper pod plate. You can polish the surfaces with very very fine steel wool to remove any imperfections, and see if that helps.....

theisgroup

10-07-2005 05:08 PM

lube is also a tuning aid. you can slow down the rear pod by applying thicker fluid between the disc and top plate. similar with lub on the king pins.

CypressMidWest

10-08-2005 12:48 PM

Quote:

Originally Posted by theisgroup

lube is also a tuning aid. you can slow down the rear pod by applying thicker fluid between the disc and top plate. similar with lub on the king pins.

That's kinda what I meant.

K.Copeland

10-09-2005 07:16 AM

I just picked up a Rev3 the other day and had the opportunity to race it yesterday and all I can say is I should have done it years ago. I sauced the tires, threw the car on the track and within 3 laps I was hooked. I did hit some boards as I'm still new to carpet ( total of about 20 battery packs time running on carpet ) but this will be what I run this winter. Practice went good but come race time, I was stricken with the jitters and only did a few laps in 2 of my qualifiers. Maybe with a few more practice days I'll feel comfortable running on carpet and can start to lay down some decent laps.

jjmudd

10-09-2005 02:17 PM

What will be the difference in handling characteristics when running the IRS lowered and elongated rear pods compared to the normal length pods?

Still Bill

10-09-2005 04:26 PM

I believe the elongated IRS pods are specifically for oval track racing.

jammin jim

10-09-2005 05:45 PM

Hi Guys, Sorry to butt in here but I need some advice on how to tune a 1/12th scale car. I run a Hara Hammer currently and was wondering where, if at all I could find some sort of tuning guide for these cars. I've been looking all over the net but have yet to find anything good. Please let me know if you are aware of anything.
Thanks a million,
Jim

jjmudd

10-09-2005 06:56 PM

Quote:

Originally Posted by JRX-S Bill

I believe the elongated IRS pods are specifically for oval track racing.

I thought they were made have a wider range of gearing options? Just wondering how they affected the handling of these cars?

odpurple

10-09-2005 07:04 PM

Quote:

Originally Posted by jjmudd

I thought they were made have a wider range of gearing options? Just wondering how they affected the handling of these cars?

The longer motor plates do allow you to use a larger spur gear, but they also lengthen the car's wheelbase. This affects the cars handling, making the car feel a little more stable but at the cost of steering. The lowered plates don't affect handling other than what you get when you use a smaller diameter tire. As you can see on the IRS website, the motor plates come lowered only or lowered and lengthened.

I used Niftech lowered and lengthened plates on my Quad 12 when I ran it on asphalt, and it worked quite well.

protc3

10-09-2005 07:24 PM

1 Attachment(s)

Hey Guys,

Paul Wynn took 3rd in mod 1/12th at the onroad nats today with his BMI 12L4A.Awesome runs today paul. :nod:

kklemmo

10-09-2005 08:38 PM

Quote:

Originally Posted by Team Girth

You could get the whole pod assembly that Masami used at the words from Yokomo. Also that kit is available now.

Any idea where to find that Yokomo 12L4 pod lowering kit?

Still Bill

10-09-2005 08:50 PM

Thanks Michael.

Seano

10-09-2005 08:58 PM

Quote:

Originally Posted by jammin jim

Try here :) http://home.sc.rr.com/mlufaso/rc/12l4/index.html

StoneMan

10-10-2005 06:45 AM

Want to change to Spektrum DSM in my T-Force. Did a search and I'm satisfied that there doesn't seem to be any issues with 19T.
My question is do you leave the ridgid antenae on the car, cut it down, or replace it with a flex one? I run a short one on the TC and Nitro.
I think that cutting it down will lower the CG quite a bit.
Any opinions?
Thanks

Fuzzy

10-10-2005 06:53 AM

Quote:

Originally Posted by StoneMan

Don't cut it down or replace it with a flex tube. The first time your car rolls over from contact you'll be regreting it. The fiberglass post gives the car a better chance of flipping back onto it's wheels after contact.

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