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Old 09-12-2012, 09:30 PM   #8911
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ok after switching the steel drive shaft I see allmost no difference. It is still pushing the ass end out to the left hard when I get on the power. Now I think I know what the problem is I think my gear case is bent or tweaked or something.

My car handeled way better during it's first race. I watched the video again back on page 584 of this thread ( http://www.youtube.com/watch?v=-s5BR8XRlog ), in the video the ass end does not come out like it does now.

Question- can I rebuild the plastic gear case (https://www.tqrcracing.com/shop/prod..._id=&cart_seq=) I have now? or once these are messed up do I just need a new one?
One other thing that can cause an imbalance under acceleration is if the rear axle is set too tight in the pod. When you put the non-diff side hub on if you press it tight when you tighten the setscrew then you will make the axle drag on the bearings. Since the bearings that hold the axle are on one side of the diff then the diff gets slowed on the pod side of the diff which will cause it to pull to one side or the other. Instead when you put the non-diff side hub on put a scrap of paper between the spacer and the bearing. Once the non-diff side hub is tightened you can remove the scrap of paper. Also note that dirty/gritty bearings can cause the same symptoms.
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Old 09-13-2012, 09:56 PM   #8912
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Hey guys, I am aquiring a new f104 pro kit here soon. As I am building it, I wish to know what you guys are running for complete setups, for a indoor prepped carpet track, smooth. Shock oil, ride height, etc. Thanks!
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Old 09-14-2012, 02:55 AM   #8913
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One other thing that can cause an imbalance under acceleration is if the rear axle is set too tight in the pod. When you put the non-diff side hub on if you press it tight when you tighten the setscrew then you will make the axle drag on the bearings. Since the bearings that hold the axle are on one side of the diff then the diff gets slowed on the pod side of the diff which will cause it to pull to one side or the other. Instead when you put the non-diff side hub on put a scrap of paper between the spacer and the bearing. Once the non-diff side hub is tightened you can remove the scrap of paper. Also note that dirty/gritty bearings can cause the same symptoms.
i concur completly. my car had a tendancy to keep steering after i had centered the wheel. after setting the non diff side with a sheet of standard 80gsm paper each time the car returns to center nicely
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Old 09-15-2012, 11:58 AM   #8914
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Anyone? As for now stock foams. What's a recommended rubber tire?
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Old 09-15-2012, 02:55 PM   #8915
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Anyone? As for now stock foams. What's a recommended rubber tire?
Pit Shimizu 0571/0572s
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Old 09-15-2012, 04:58 PM   #8916
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Ok looking for more steering. Or i guess the car seems to slide the front tires instead of turning.
Here is the set up

Rear.
ride height 4 mm
damper. 25 oil. With red spring. And 2 mm shim on rear mount
traction plate. The soft one. With loose screw in middle.
Composite axel
21 grams of weight.
Diff slippes a small amout

Front
short upper deck
silver spring.
ride height is 3.5
Toe is 1
Camber 1.5
Arms are level.

Running tcs tires
f104 with fiberglass chassi.
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Old 09-16-2012, 12:24 AM   #8917
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Originally Posted by Huskerfan1212 View Post
Ok looking for more steering. Or i guess the car seems to slide the front tires instead of turning.
Here is the set up

Rear.
ride height 4 mm
damper. 25 oil. With red spring. And 2 mm shim on rear mount
traction plate. The soft one. With loose screw in middle.
Composite axel
21 grams of weight.
Diff slippes a small amout

Front
short upper deck
silver spring.
ride height is 3.5
Toe is 1
Camber 1.5
Arms are level.

Running tcs tires
f104 with fiberglass chassi.
How much rear droop? Which steering blocks? And how do you have your servo oriented?
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Old 09-16-2012, 05:42 AM   #8918
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Sadly not sure what you mean by rear droop. It is how much the frontend droops to the rear. Servo is mounted vertically. Steering blocks? Steering blocks not sure what you mean.
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Old 09-16-2012, 07:20 AM   #8919
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Sadly not sure what you mean by rear droop. It is how much the frontend droops to the rear. Servo is mounted vertically. Steering blocks? Steering blocks not sure what you mean.
If you put the chassis up on blocks, measure how high off the ground it is. Now let the rear pod hang in space, and measure distance to ground. Take te difference and that is the rear droop. Of the numbers are the same or close to it you have little to no droop, and that is why your car pushes.
Steering blocks are also called front uprights, and are te pieces that contain the front axles. You have two choices here, the online blocks and the 3.5mm offset blocks. The offset blocks have more of a caster effect to them, so the car will be more settled in a straight line. They do seem to provide more steering as well though. I would mount the servo horizontally, as this helps bump steer and gives a better Ackerman angle, which will help the car turn. You didn't mention if the push was off power or on power
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Old 09-16-2012, 08:03 AM   #8920
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The car seems so push on sweeping corners. Tight corners fine. So mid corner on and off power. The other thing that really sucks is that the local track shares pit area with off road. So testing this car is hard do to dusty carpet. But on the night we run carpet the grove comes in well.
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Old 09-16-2012, 08:05 AM   #8921
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Btw lots of guys at the local track are loving the decals you are a master. Still planning on that 555 car.
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Old 09-16-2012, 08:07 AM   #8922
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The car seems so push on sweeping corners. Tight corners fine. So mid corner on and off power. The other thing that really sucks is that the local track shares pit area with off road. So testing this car is hard do to dusty carpet. But on the night we run carpet the grove comes in well.
What tire sauce? and how much of the tire do you sauce?
I would probably increase camber to 2 degrees, and add some preload to the shock. Also go up to a yellow or blue spring
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Old 09-16-2012, 08:10 AM   #8923
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Sxt 2.0. Front tires do seem to glaze over.
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Old 09-16-2012, 08:14 AM   #8924
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Btw lots of guys at the local track are loving the decals you are a master. Still planning on that 555 car.
Thats good to hear, there is lots of new stuff coming soon. I have been looking at the 555 car, and it is doable, but it is a little more involved than I originally thought.

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Sxt 2.0. Front tires do seem to glaze over.
What do you clean with? Saucing all the way across might help the glazing.
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Old 09-16-2012, 08:19 AM   #8925
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I clean with 3.0. Really the diff between fast car and myself is .03 a lap or so. If i could just just find that in my car i would be very happpy. And im mid pack. So there is 4 of 5 cars all able to win mains.
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