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Old 03-23-2009, 01:37 PM   #1
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Default Slash gearing for spec class? (your suggestions)

So basically, I am trying to push this slash to be a little faster, and still fit in the spec class. What gearings are you finding to be most effective? You CAN swap out the spur gear in the spec class right?
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Old 03-23-2009, 01:38 PM   #2
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Ask whoever runs your spec class and your fellow racers. In our spec class we cannot change the pinion/spur, we must run 18/86.
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Old 03-23-2009, 01:53 PM   #3
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Yeah I was under the impression that you can pretty much only run what came in the box. So that means either 18/86 or 23/86 because it comes with both pinions. In the end it's all up to your track.

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Old 03-23-2009, 02:00 PM   #4
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Most tracks only allow you to use the pinions that came in the box and allow you to use your own receiver/transmitter combo . It makes for good close racing !
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Old 03-23-2009, 02:33 PM   #5
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I got ya, so should I opt for the 23 tooth pinion? Being that the Slash is a “momentum based” vehicle, acceleration is key, but will I lose a lot of that with the 23T? I know I would have more top end. What do you yall think? Worth it?
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Old 03-23-2009, 02:52 PM   #6
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My thought is if the truck is at full speed before the end of the longest strait then go up in gearing on pinion. This depend on traction surface of track.
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Old 03-23-2009, 02:53 PM   #7
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That depends on how big your track is. If it's a smaller tight or technical track then I would stick with the 18t pinion. If it's bigger and your truck is topping out before the end of the straight, then I would go with the 23t.

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Old 03-23-2009, 02:58 PM   #8
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Quote:
Originally Posted by pyro18t View Post
That depends on how big your track is. If it's a smaller tight or technical track then I would stick with the 18t pinion. If it's bigger and your truck is topping out before the end of the straight, then I would go with the 23t.

J
Oh it is topping out about HALFWAY down the straight.
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Old 03-23-2009, 03:17 PM   #9
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If your track allows it throw in the 23T. It doesn't take that much away from the bottom end, she'll still scoot pretty good!

J
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Old 03-23-2009, 03:22 PM   #10
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We are allowing any gearing since all motors have a different powerband. It seems that most of us have gone to a 23/90 combo that works well on our track.
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Old 03-23-2009, 05:04 PM   #11
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at my local track i use a 83/23 and it feels good.
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Old 03-23-2009, 05:32 PM   #12
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The stock tires are traction limited so having a ton of low end grunt w/ (18/86) insufficient traction will require a smoother trigger finger or some radio adjustments.

Best thing to do is try 'em out for yourself.
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Old 03-23-2009, 06:46 PM   #13
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I run the 21/90 and I love it. Our track is pretty small with a 3/4 oval and technical with small jumps in the infield. My truck will top out 1/2 to 3/4 down the front straight but it also allows me to control the speed throughout the track. It definately lost some of it's low-end grunt but it will still break the rear lose on command, gotta love the Slash! It's all about throttle control with this truck.


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Old 03-23-2009, 09:15 PM   #14
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Quote:
Originally Posted by pyro18t View Post
If your track allows it throw in the 23T. It doesn't take that much away from the bottom end, she'll still scoot pretty good!

J
I agree, I put the 23 in on saturday at pegasus hobbies and what a difference: clearing the double no prob, less spin outs, more top speed, more control all together, watch your motor temps though
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Old 03-23-2009, 09:55 PM   #15
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for our spec racing we're limited to stock spur and 18, 19 and 23 pinion.



The slash parts manual says the car comes with a 19t pinion, the car itself comes with an 18t pinion installed and the 23t optional. Traxxas messed up on that one, we however allow both the 18 and 19t so if anyone buys a replacement they aren't disqualified because of misprint



I've run both and the 23t is better for larger tracks or oval, the smaller gear is better for shorter, tighter courses.
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