I was going to take a speed controler out of one of my TC's and was not sure what one I should use,I also have a V12 GM,I was running an LRP 7.1 in my 12L3 but it is a bit on the big side and I wanted to down size my radio gear on my CRC,The track I race at all they run is stock,heck I cant even talk anyone into running 19 turn..:eek: I was even thinking about using an LRP sport..just not to sure on that one.

I think taking the Quantum Comp out of one of your touring cars is your best bet. The quantum sport would be fine for stock though. But if you have the quantum comp too, it would probably do a better job.

I strongly encourage LRP Quantum Competition users to either utilize a 5 cell receiver pack or a large capacitor with this speedo. It has worked for me. I use the capacitor, 1000 microfarad @ 35VDC, when running stock motors and the 5 cell battery pack with modified motors. When using the receiver pack, I only use the switch on the pack to activate the system.

The receiver pack ensures enough voltage in the speedo, the receiver and servo for proper operation. The capacitor holds enough voltage during heavy acceleration to help the same 3 components operate with glitching. Radio interference on 4 cells is difficult to contain.

The next thing regarding inter-car radio interference is to locate the negative wire to the speedo from the main battery as far away from the radio antenna as you can. Also, make that wire as short as possible.

How close are your 12th scales to the weight limits for major races? (I am at work so you will have to forgive the lack of any actual numbers) I was thinking back to the last large race I was at... (NORRCA carpet something or other)... I recall my 12th scaler being well over weight. I was running a 12L3 at the time. But I remember being heavy enough that I could not even imagine what I would need to do to get down to the limit. The guy next to me had the similiar issue and was running a CarpetKnife. So my question to you guys out there is... what are the running weights of your cars and do you have trouble getting down to the weight limits at big races? If everyone has this problem, I wont worry about it. But if you can get your car that light, fill me in on some of the stuff you guys do to them. I should be receiving my speedmerchant soon for the fall season and I would like to be as light as possible :)

My CK is about 3 oz over last time I was teched. I have changed speedo's since then.

On the battery thing, I saw a nice post about adding ONE AAA battery to your system so a full 6 volts gets to the reciever with out the weight or trouble of a rechargable 5 cell pack.

Hook the - of the AAA to in series to the + side of the pack and the + side to the + side of the reciever. Leave the Speedo switch off and you have 6 volts on a 4 cell system. 4.8 + 1.5 = 6.3 This will help your servo go faster (If you need that) and reciever run on a full 6 volts which will help reception a lot especially at long distances when you floor it.

I hope this helps
David Root

Does anyone know what the ROAR legal minimum weight limit is? I'm just wondering how much over weight my CK is. One thing you can do for keeping your car light, is to get a light weight body. And also not to do a thick coat of paint. If you can stand to have your car one color, than do a one color paint job if you want the lightest body. Silver, black, and red all cover well so you won't need a lot of coats to cover well.

29 Oz.
 

Where I race, its 29 oz mimimum and 1/8 ground clearance. they have a scale and a 1/8 rod they run under the car to make sure you are within the limits.

How is the CRC going DX6?

ROAR made a mistake in this year's rulebook reguarding 12th scale weight (as well as some other things that i wont go into). they converted from oz to grams incorrectly so its 711g, however it should be 811g or close to that. my car was 830 at the paved nats (w/ the 2003 rulebook) while at the carpet nats a few months prior with the same exact chassis and electronics was only an OZ overweight (the 2002 was used at the 2003 carpet nats since the 03 rulebook wasnt out yet, go figure, lol). however i was told that ROAR was not going to change it, however 2003 is basically over for ROAR sanctioned 12th scale races, except for regionals, so it should not be a big deal.

A lightweight body is a must for 12th scale, however ontop of that... run a quantom esc (or a keyence or GM), and old style front end and stock AE bulkheads for all cars that apply. My Rev. 3 has the dress kit, foam bumper, alum braces for the old style front end and IRS rear bulkheads, so its not exactly on a diet, lol, however its not that much over to really make a difference.

Re: 29 Oz.
 

I love this car. It's so much fun to drive, and its so quick. I haven't been able to race against anyone else at my track, so I've just been practicing with it. But I'll be able to race with it tomorrow probably. Or atleast practice with some other 1/12th scale cars. Even if a bunch of people at my track say that the Carpet Knife isn't any good. I still like it, and how could it not be good if its won big races? But most of the things people say, they are just kidding around.

How does a tri shock set up compare to a single shock set up???
It seems that a tri shock set up would stiffen up the car, with less side to side flexing, but if you didnt have a little flexing wouldnt you lose some traction? And i dont know if this is a big deal, but wouldnt the extra 2 shocks add a considerable amput of weight?? My switch blade has the ability for a tri shock set up, and am wondering if there are any benafits.

thanks

Are you asking me that question switch blade? Because the carpet knife doest have three shocks. only one and damper tubes.

no.......the question wasnt for a perticular person;) i just am asking in general........sorry i guess i didnt specify

Ok, thanks for clearing that up. I think the only time someone would use the 3 shocks on a 1/12th scale would be on an oval car.

Carpet Knife has 3 shocks
 

The damper tubes are shocks, just no coil springs on (or in) them. The springs are on the sides of the chasis. BASICLY it is a tri shock car because it has NO T-Bar.

And is better..:sneaky: