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Old 08-10-2015, 07:34 AM   #1051
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i'm new to F1, i have been running my car for a few weeks now and cannot open up the throttle on exit without spinning out. I'm running the stock setup. i've tried a couple different rear spirngs but same result...

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I had the same problem when I first started driving my X1. This car is the first 2WD solid rear axle car I have ever driven. All of my previous cars have been 4WD Touring Cars. One thing is certain, driving a 2WD solid rear axle car takes much more finesse than a 4WD. Rule #1 is you cannot pull the trigger while the front wheels are turned, not even a little. The car will spin out. Rule #2 is it is very very important that the weight distribution from left to right of the X1 is 50/50. If one side has more weight then you will spin out.
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Old 08-10-2015, 09:01 AM   #1052
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Originally Posted by junior1178 View Post
i'm new to F1, i have been running my car for a few weeks now and cannot open up the throttle on exit without spinning out. I'm running the stock setup. i've tried a couple different rear spirngs but same result...

thanks,

jose'
AS the previous comments suggested, driving style is important.

But also check the diff is set correctly, and check the tweak of the side springs.
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Old 08-10-2015, 09:32 AM   #1053
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I am new to driving F1 also, -the X1 is my first F1 car.

I noticed the same thing that is being described, -rear end swinging out upon near full throttle. What helped me a ton was spending 2 full days at a practice track. I fiddled w/ the diff' setting over and over until I got it the way I liked. Seriously turning the diff' screw even a 1/2 turn makes a noticeable difference. If the diff is too tight or too loose the car will not perform well. Second was getting used to driving a rwd car like the X1. Easy, feathered movements are what I suggest. What helped me (I believe) is that I also race in a Tamiya Mini class, -those Mini's take a lot of finesse and careful control to get them to perform well. The X1 is nothing like a TC where you can just point and shoot (sort of speak). The X1 really needs to be finessed like mentioned.

In my first race w/ the X1 I placed 5th out of 9 racers. I never full throttled the car, what I found was easy controlled driving is what put me ahead. Not crashing or spinning out. ...and when I did start to spin I was able to correct it by letting off on the throttle.

I hope this helps.
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Old 08-10-2015, 09:40 AM   #1054
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By the way, I really love this class and my X1.
I really can't find any fault w/ the X1, ...maybe, maybe if I wanted to be a bit picky I could say that it is a bit of a hassle getting the battery in-out of the car for charging. You have to slide it out at just the correct angle. But that isn't really isn't a fault or something I would hold against the car. Just takes a little practice.
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Old 08-10-2015, 10:45 PM   #1055
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thanks... tweak is good... i'll mess with the diff settings... might be too tight...
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Old 08-11-2015, 03:48 AM   #1056
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If you are running the battery across the chassis and find the rear end is breaking out in the corners then I suggest changing to an inline battery. I found that made a huge difference in driveability on our outdoor asphalt tracks here in Aus.

Diff settings are very important. You should be able to accelerate out of a corner but you won't be able to grab full throttle unless the traction is extemely high. I found that if the diff is too loose the X1 became difficult to drive and a slightly tighter diff made the car much more predictable and easier to drive.
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Old 08-11-2015, 05:24 AM   #1057
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Other things to look at: center shock setup, maybe as cheap as the angle of it, but maybe different dampening too... side spring dampening, it may be too thick not allowing the car to square up as you exit.... adding droop to the front kingpins (taking out shims above the upper A-arm) will allow more weight to transfer to the rear... and tire combination.... (not necessarily in that order).
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Old 08-11-2015, 09:28 PM   #1058
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Quote:
Originally Posted by luda View Post
If you are running the battery across the chassis and find the rear end is breaking out in the corners then I suggest changing to an inline battery. I found that made a huge difference in driveability on our outdoor asphalt tracks here in Aus.

Diff settings are very important. You should be able to accelerate out of a corner but you won't be able to grab full throttle unless the traction is extemely high. I found that if the diff is too loose the X1 became difficult to drive and a slightly tighter diff made the car much more predictable and easier to drive.
+1 And try using only one conical diff spring in the diff.

Also you may want to try changing the caster on the front from 9 degree's to 6 degree's, this will help to reduce the rear end of the car from spinning out on corner exit.
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Old 08-17-2015, 05:01 AM   #1059
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Just purchased a 2nd hand X1 that is fitted with a T4 centre shock, is there any advantage using this?
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Old 08-17-2015, 05:02 AM   #1060
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Just purchased a 2nd hand X1 that is fitted with a T4 centre shock, is there any advantage using this?
Doubt it, apart from more springs etc to choose from.

N.B. I don't think it's a disadvantage either
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Old 08-17-2015, 05:45 AM   #1061
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The box stock shock is a T4 shock............
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Old 08-17-2015, 07:41 AM   #1062
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In the discussion of the car being difficult to drive, don't forget radio tuning. Turn down the throttle, change the throttle expo, etc. As was stated, 2WD solid axle cars are about finesse.
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Old 08-17-2015, 07:42 AM   #1063
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"In the discussion of the car being difficult to drive, don't forget radio tuning. Turn down the throttle, change the throttle expo, etc. As was stated, 2WD solid axle cars are about finesse"

Awesome point!
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Old 08-17-2015, 03:48 PM   #1064
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Did some weighing in....

X-Ray 2mm Carbon Chassis - 48.5g
2mm Carbon Rear Pod - 6.8g
= 55.3g total


X-Ray 2mm Aluminum Chassis - 88.1g
2mm Aluminum Rear Pod - 12.4g
= 100.5g total

Stock 2.5mm Chassis - 60.7g
Stock 2.5mm Rear Pod - 8.6g
= 69.3 (Plus maybe an additional gram or two for wear)

Last edited by Dan; 08-17-2015 at 07:26 PM.
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Old 08-18-2015, 09:57 AM   #1065
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ran this setup Sun at my home track. Sooo good, fast easy to drive and it got better through the run. Ride tires have never worked at my track in previous tests. TQ and Fast Lap
Thanks to Xrays F1 Master Jan R. for the help!

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