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Old 01-28-2007, 05:51 PM   #91
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Whats a good brushless system for these lil carz
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Old 01-29-2007, 03:51 PM   #92
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I just picked my 18R today and am ready to get it going. Is there anything out of the box that needs to be upgraded?
I plan on converting to FM right away and run it mostly stock since we are promoting a stock class now.

I'm going to grab a 2nd one to modify for an open class we will run. I like the car a few pages back with the 18B body and rear shock tower on it. looks like a sprint car (cool).
I seen some Losi Mini T road foam pre mounted tires. The guy suggested using rears all the way around and trueing them down to a lower profile. Has anyone tried that?
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Old 01-29-2007, 04:40 PM   #93
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Quote:
Originally Posted by danthrc
I seen some Losi Mini T road foam pre mounted tires. The guy suggested using rears all the way around and trueing them down to a lower profile. Has anyone tried that?
They will not fit.....the rc18r has shorter axles....you will need to replace the axles w rc18t axles. They work well right out of the box....the ti turnbuckles will be a good upgrade.
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Old 01-29-2007, 04:56 PM   #94
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Is it the offset? Because for this application (losi foams) I would be using the buggy body for my modified racer. I don't want to change the length of the arms or axles.

Here is a track I just completed at our LHS. We will be doing road racing with all possible 18th scale cars.

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Old 01-29-2007, 06:48 PM   #95
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That track is sweet. Where is it?
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Old 01-29-2007, 08:20 PM   #96
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Quote:
Originally Posted by danthrc
Is it the offset? Because for this application (losi foams) I would be using the buggy body for my modified racer. I don't want to change the length of the arms or axles.

THe rc18r wheels are narrow(.75")....i believe you will not have enough axle for the nut to properly tighten. Maybe you can check it out before you buy the foams....
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Old 01-29-2007, 11:27 PM   #97
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Does anyone know the stock shock oil weights for the 18r?
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Old 01-30-2007, 08:49 AM   #98
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I picked up my 18R yesterday and changed it over to FM and looked it over real well.
Im sure there are tons of aftermarket parts since the B and T have been out for a while. I am a racer, and am used to the M18 and do not want a bunch of aluminum on the car.
The steering linkage looks a bit weak to me. How does it hold up. Are there threaded turnbuckles available so camber and tow can be adjusted.
How are you guys lowering the ride height? Or can you.

I really like the car. Not comparing it to a TC at all, just wondering how to get the most out of it for road racing.
I will be leaving this one all stock other than the receiver, but want to get another one right away and start making it a modified racer.

Its raining today, so I couldnt put it out on the track, but based on wheel speed, it seems like it runs pretty fast out of the box. Has anyone tried it like it is, with the 6 cell pack and a Big Block motor? That is the combo I was wanting to start out with on the modified car, and then eventually go to brushless.
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Old 01-30-2007, 11:29 AM   #99
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They have Ti turnbuckles kit that fit the R. As far as lowering the ride height the obvious would prolly work, remove the preload clips. These cars are great bone stock why put a big motor in these cars? they are uncontollable with to much power, thats not fun.
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Old 01-30-2007, 12:34 PM   #100
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Thanks huffer...

You are correct on "uncontrollable speed" The car is very fast out of the box and most racers don't need much more than that to road race. We are going to start a box stock class as well as modified.
On the mod car I will go brushless. I have a mamba system with a 4800KV motor in one of my Xrays which is far from bullistic but faster and more efficient than a brushed motor. With 6 cells it will probably be just right for racing.
I think the guys are lowering the car with shock limiters. If I take preload out it will droop but will have too much sway because of all the travel. I will probably install the limiters and add more preload to stiffin it up.


The track I posted above is in Houston Texas
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Old 01-30-2007, 12:50 PM   #101
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Your right about the limiters, I didn't think about that. As far as the brushless system the 4800 is perfect I think its the performance pack right? Brushless is the way to go, hastle free. If your going to mod you should go Li-po as well. When you limit your shocks what will you use?o-rings or another piston drilled out?
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Old 01-30-2007, 01:38 PM   #102
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O-Rings.... All it does is limits how far the shock can extend, therefore keeping the chassis pan lower.
Using stiffer springs should help keep the sway down too. Especially in front.

What do you think about the speed control that comes with it compared to the Novak Spy?

Also will the Hitec micro servo fit on the RC18? I'm not sure if that servo mount will work with any other servo.
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Old 01-31-2007, 12:17 PM   #103
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I ran my 18R today for the first time on the track. I have to say, this is a very fun car to drive, and race. The car is box stock since that is what we are pormoting to race at the moment. Its very fast out of the box. On our treated asphalt track, the car had good grip. Not exceptional, but well good enough to race. The car is fast and you have to drive it.

The only thing a little anoying was the turning radius of the car. I have the end points set to what looked like maximum but the car does not turn tight. Put that along with a little natural push and cornering was a challenge.

I did like the balance of the car. Like in real racing if your to hard to quick on the throttle the car spins out. The cool thing was there was a distinct feel in how much throttle would either keep you hooked up or would send you into a spin. Seemed pretty predictible.

I really like the car as a flat track racer. I'm looking forward to Saturday when I can spend allot of time with it, and work out some of the minor issues I seen on first run.

If you havent picked one up, I would reccommend it. Its a fun car!
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Old 01-31-2007, 12:38 PM   #104
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Quote:
O-Rings.... All it does is limits how far the shock can extend, therefore keeping the chassis pan lower.
It does more than that.

I think internal limiters also effect polar movement between the front and rear of the car under velocity. Meaning without limiters, (taking the rear end), letting of the throttle or braking will shift the momentum towards the front of the car. Without limiters, this will allow more shift of the cg forward as the shock can raise higher in its travel. With limiters, it can't shift as much forward.

The front is the same idea, but with acceleration, the front end wont rise as much to shift the cg movement back as much. So under acceleration you will have more steering.

Im probably using the wrong terms, but you get the idea.
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Old 01-31-2007, 12:50 PM   #105
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Yea, I'm sure it effects the geometry of the car in some way, but short of installing shorter shocks, or ae coming out with some sort of ride height adjustment, its the only option.
The weight shift on throttle and brake should happen anyway, with or without limiters. The thing that may change would be the speed of the shift. Shorter travel (limiters installed) would quicken the weight shift. I think it is smart to limit front and rear to balance the car.

My plan would be to limit the shocks to get the car lower. Stiffen the springs, and firm up the shocks with thicker oil. Keep in mind im running on a smooth flat road coarse. This would never work on a rough rally type track.

Has anyone heard when foams will be released for this car?
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