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Old 10-21-2007, 08:14 AM   #1
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Default rookie plz help

ok i just got a L4 about 3 weeks ago and i have been in offroad for 1 1/2 years and here are the results:
great acceleration
very fast

the misses:
bad traction even with tracton compound. can you tell me wich one is best for foam
why always traction?
plus what servos r u guys using? is it good? how good in a scale 1-10
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Old 10-21-2007, 08:21 AM   #2
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Are you racing on carpet or ashalt?

What T-bar thickness and front springs are you using?

JR 3550 or 3560 servos are very good.
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Old 10-21-2007, 08:27 AM   #3
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oops...JR 3650, not 3560
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Old 10-21-2007, 10:22 AM   #4
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Quote:
Originally Posted by cm367700 View Post
ok i just got a L4 about 3 weeks ago and i have been in offroad for 1 1/2 years and here are the results:
great acceleration
very fast

the misses:
bad traction even with tracton compound. can you tell me wich one is best for foam
why always traction?
plus what servos r u guys using? is it good? how good in a scale 1-10
Mr. Larry Brown can get you in the ballpark without a doubt sir!

Tires for carpet lately have been Jaco Prism Yellow Rears and Jaco Prism Double Pink Fronts (Jaco Prism Lilac Fronts if the Double Pinks are turning too much for you). For asphalt typically Jaco Prism Pink Rears and Jaco Prism Double Pink Fronts (again Jaco Prism Lilac Fronts if the Double Pinks are turning too much for you).

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Old 10-21-2007, 10:46 AM   #5
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Nick from Team Kwik also knows his stuff very well The reason I asked about your setup is that the thin (.063") T-bar and .018" or .020" front springs is the most popular setup...and will work very well with Nick's tire recommendations. If your setup is different, I recommend that you change the setup and follow that recommendation.
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Old 10-21-2007, 01:43 PM   #6
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ok first of all my t bar thickness - idk but its pretty thick
im racing on carpet i got a 19t stock 22/75
gray compund (rears)
pink compund (front)
hitec HS-225BB servo
GT7
spectrum dsm
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Old 10-21-2007, 02:25 PM   #7
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Quote:
Originally Posted by cm367700 View Post
ok first of all my t bar thickness - idk but its pretty thick
im racing on carpet i got a 19t stock 22/75
gray compund (rears)
pink compund (front)
hitec HS-225BB servo
GT7
spectrum dsm
The tires are without a doubt going to be your first area of attention. Grey in the back with Pink in the front is going to make for a car that has massive amounts of steering. I would recommend going with one of the combinations I suggested before for carpet.

Get some 64 pitch gears on that car without a doubt! Your gearing seems pretty close so pick up a 100t spur along with 28,29 & 30 tooth pinions to start with.

Most Hitec servos while inexpensive and good to start with don't belong in 12th scale cars. Hitec servos are cheap and the quality reflects that. In 12th scale you are moving a very small car at a very high rate of speed and you need an accurate and slop free servo that centers up well. I have watched many newcomers sabotaged by a poor quality servo, it's just not worth it in the end. Larry's recommendations are spot on!

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Last edited by Team Kwik; 10-22-2007 at 05:12 PM.
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Old 10-22-2007, 04:23 PM   #8
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wait so which T bar do i need?and what traction compound?
i know i need Jaco prism yellow rears and prism double pink fronts
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Old 10-22-2007, 04:29 PM   #9
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double post
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Old 10-22-2007, 04:29 PM   #10
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Pink rears also work well for high- bite traction, at least for my track. I used he Ko Propo pds-949ICS servo in my 1/12 scale.
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Old 10-22-2007, 06:43 PM   #11
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You need the .063" Associated T-bar, and Paragon Grounds Effects traction compound if allowed at your track. If not allowed, talk to the other racers to find out what they like.

Remember to check your front springs and use .020' to start, .018" if you need more steering.
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Old 10-22-2007, 07:41 PM   #12
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ok so i need .063 t bar
prism double pink fronts
prism yellow rears or pink rears
plus will traction compund for rubber tires work cause i didn't read the label well
plus thanks 4 the fast responses
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Old 10-22-2007, 08:26 PM   #13
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Quote:
plus will traction compund for rubber tires work cause i didn't read the label well
Since you didn't say what brand of compound it is, we have no way of knowing. Most rubber tire compounds are not suitable for foam, however, so I refer you to my previous recommendation.
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Old 10-26-2007, 10:20 PM   #14
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so what other upgrades/hopups should i get 4 my L4?
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Old 10-27-2007, 05:35 AM   #15
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If you follow the recommendations above, your car will be capable of making the A main as is without further hopups. The key to going fast is tuning the car to the the track you run. This means adjusting ride height (you will need ride height adjusters if you don't have them), adjusting rear pod dampening via the discs and shock oil, choosing the shock spring that works best (you'll need a set of these as well), front springs, traction compound width on front tire, etc.

Most racers spend months to years to learn proper tuning. I suggest you browse this forum for any thread dealing with 1/12 scale cars regularly, and look for tuning guides to help you understand what each change will do. Rich Chang put together a very nice tuning guide, although I don't have the link. Perhaps someone else can chime in with that. That guide would be an excellent place to start your education.
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