I'm stationed out East and have no time to practice. But when I'm home in the Midwest, I'd like to race more competitively. Got my Slash 4x4 in November and its completely stock (the 'ultimate' package). I'm competitive enough to race against other racers on my stock tires, which if youre racer, you know is tough to race with.
I'm looking to invest about $200 or a little more when I get back. Minus the tires, what would be a good upgrade?
a new servo
a fan and/or heat sink for the ESC
or new motor
I'd like to be at least competitive with possibly the mid-pack racers out there. I'm currently able to get 13laps in a 5min session up at Trackside w/ stock tires, the stock 7cell NiMH battery, 3500 motor. Also swapped out the slip-dif and put in a 52T gear.
Any suggestions would be greatly appreciated.
I am not a racer. On my Ultimate I put Mip X-Duty's, RPM a arms, Proline Power Stroke shocks, King Headz motor mount and a Castle MMP and 2400 motor. It has been bulletproof for eleven months now.
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I would pick up some 2S lipos, and then save the rest to see what tires, etc, the guys at your hometown track are running. Or you could order a tenshock motor with hobbiewing wp sc8 like I just did, but I'm biased.
I would take the STRC LCG chassis if you want to be competitive, it will change everything. I dont know how much lipos youve got?... Dont waste your money on a new motor. The velineon is a good motor to start with. And yes, a fan for the ESC is a good idea...
Last edited by Beholder_74; 01-06-2013 at 08:02 AM.
Last edited by cooleocool; 01-06-2013 at 10:13 PM. Reason: post merge
At the moment I´m using Team Orion Rocket Sport Lipos 7.4V with 25C and 4200mAh. I´m racing for about a year and the power of them is enough to start with... The next Lipos I will buy are Gens Ace 5300mAh 7.4V 30C 2S1P Hard Case. I chose them because I´ve got the new STRC chassis and its a little bit heavier than the stock one and because of the better capacity.
Last edited by Beholder_74; 01-06-2013 at 01:33 PM.
Thanks B_74. I dont think the 3s are allowed either in races now that Ive read up on them more. I just initially thought more voltage would help.
Just an advice... start with the following parts, ok the fans didnt make you more competitive, but they will save your expensive electronics:
- Lipo batteries
- Hot Racing linear springs for your shocks (18 Dollars) = 2 Sets (front and rear) with 3 different spring rates
- Velineon cooling fan for ESC (20 bucks)
- Ezrun cooling fan and heatsink for the Motor (10 bucks)
I´m just using 2S and my electronics were hot too (in summer)... Buy the traxxas ESC fan and if you´ve got acces to a dremel (its a little bit work) take the EZRUN 5V Cooling Fan & 36 x 55mm Motor Heat Sink (very cheap 10$) from E-beach. With the EZRUN Cooling system my motor temperatures are about 20 degrees (Celsius) less. An aluminum motormount will help also.
If you choose the EZRUN System, I can help you to make it fit to your motor... Just write me a message
We´ve got 10 degrees Celsius outdoor temperature at the moment. With the Ezrun setup and an aluminum motormount (STRC LCG chassis) my motor (Velinon) gets only 30 degrees hot (2S /25c + 16t pinion/52 gear) on a 10minute full-speed run.
DONT BUY A JCONCEPTS CHASSIS OVERTRAY... ITS A HEAT COLLECTOR!
Last edited by Beholder_74; 01-06-2013 at 03:22 PM.
What are others times per lap?
Yours is 23 seconds
Slash 2wd, Slash 4x4, 30th digger, Rustler VXL
And yes... tires are important, too. Pro-Line is the brand to buy... but what kind of tire depends on the surface of the track.
Go with a venom 2s hard case with a 40c or higher rating. Venoms warranty is hard to beat.
Always stick with hard case lipos
SL4SH Mamba Monster-Rustler Mamba Max 2400kv
On the subject of suspension and jumps, I'm hearing a slight grinding sound when the truck compresses before a jump.
At first I thought it might be from the tires rubbing up underneath the body which Ive noticed before (the paint is wearing away in under the rear fenders.) I want to say its not bottoming out anymore after the adjustments but not sure. I'm still hearing it.
I'm still running the stock springs and shocks, though Ive changed the mounting positions on top and bottom (both in the front and rear) I've also added bigger spacers to compress the springs, make it a little stiffer, and give a little more ride height.
Will new shocks & springs solve this problem or is there something else I should look at or be looking for?
Thanks for the help guys! Everyones been helpful and now Ive got a shopping list and some more research to do haha!
No pal, the stock shocks are great, but the stock springs are trash. The stock springs are to soft at the beginning and to hard at the end. Thats what we call progressiv springs. Take a look at the winding of them... on the outside of the springs their is more windig than at the inside. You need new springs and shock oil too. At the moment I´m driving the silver springs from the Hot Racing Set with 42,5 WT in front (50WT is stock) and 32,5 WT in rear (40 WT is stock). A lower WT-rate means thin oil > they react faster.
The problem with the stock setup is the following: Youve got a very high ground cleareance and the car tends to flip. To get rid of this problem is to incline the shocks, but inclining shocks make them more stiff (progressiv)... and you shorten the damping way also (beccause of the additional C-Clips).
Forget the stock set-up. I learned setting up my car by doing a base setup on street and then modifing it for off-road.
I will take a few photos now and post them here.
First off all 2 photos of my car with front and rear pushed to the ground (with lipo)
Dont forget, that I´ve got a lipo (lighter than stock nimh batterie) and the STRC chassis (a little bit heavier than stock) and also the silver springs on my car.
If I set the general ride high I always look, that my drifeshaft are almost parallel to the ground.
Best torque and also a flat ride high. At the rear you can take a little more ride hight (not parallel to ground) because the rear will compress if you have your finger on the throttle trigger.
I dont need much ride hight because I´m driving street and
carpet off road (no big stones on the track)
And now without compression. You see, that the A-arms facing down to get more ground cleareance before the impact after jumping.
Last edited by cooleocool; 01-06-2013 at 10:18 PM. Reason: post merge (and edited for language abuse by another mod.)