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Old 11-22-2014, 03:30 PM   #13156
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Well, I am a little disappointed. I have one of my Club Racers set up with a Castle Sidewinder 2 and a 5700kv motor geared at 66/27. Running on 3S, my GPS clocked its speed at only 60mph. Worse, it was cold out (only around 35*F), and the foam tires had no traction. Stopping got a bit hairy on several occasions. I'm not sure if there's a lot of binding in the drive train (though it rolls smoothly when the motor is disconnected) or aerodynamic drag (running HPI '68 Camaro body). Oh well. I'll probably end up waiting until Spring to try to improve.
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Old 11-22-2014, 05:33 PM   #13157
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I used blue in the front and green in the back springs.
Shock oil 30.
But i dont hot 60 mph, at the most 30 mph.
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Old 11-22-2014, 06:31 PM   #13158
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Cool thanks for all the info guys! I will definitely look in to all the suggestions.
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Old 11-26-2014, 02:16 AM   #13159
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Well, I am a little disappointed. I have one of my Club Racers set up with a Castle Sidewinder 2 and a 5700kv motor geared at 66/27. Running on 3S, my GPS clocked its speed at only 60mph. Worse, it was cold out (only around 35*F), and the foam tires had no traction. Stopping got a bit hairy on several occasions. I'm not sure if there's a lot of binding in the drive train (though it rolls smoothly when the motor is disconnected) or aerodynamic drag (running HPI '68 Camaro body). Oh well. I'll probably end up waiting until Spring to try to improve.
60 mph sounds about right for your gearing and low traction conditions. Is it a 4 pole motor? If you start going any faster, the old school Camaro body will cause your TC4 to lift up into the air sometimes at around 70 mph. I have a similar setup with Castle 5700kv 4 pole and it goes 80 mph geared at 60/36 on 3s.
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Old 11-26-2014, 08:14 AM   #13160
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Can someone link me to or tell me a good starting set up for the TC4? 17.5 blinky with rubber tires on carpet is what my local track will be running. What springs and swaybars in the front and back, what weight oil, ride hight, diff tightness etc. My TC4 also has a sold diff in the front... Bought it that way. Should I get the regular one?
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Old 11-26-2014, 10:03 AM   #13161
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Team Associated has a number of good baseline setups for the TC4
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Old 11-26-2014, 02:22 PM   #13162
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Ha ha, tc4Basher, you're dead on. The car caught a little air over a manhole cover while accelerating, caught air under the body, and lifted two feet into the air, landing on its roof and sliding about 75 feet. It is a 4-pole motor.
I realized why traction was so low; the drive shaft housing was loose, and had slid off the pin. Essentially, the car was rear drive. After tightening it and swapping back to the stock TC4 body, I tried again the following day. Same speed, but at least it was controllable. ...Until I hit full brakes (which were set at 60%) at full speed. Now I'm waiting for a new spur gear in the mail.
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Old 11-30-2014, 04:25 PM   #13163
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Ha ha, tc4Basher, you're dead on. The car caught a little air over a manhole cover while accelerating, caught air under the body, and lifted two feet into the air, landing on its roof and sliding about 75 feet. It is a 4-pole motor.
I realized why traction was so low; the drive shaft housing was loose, and had slid off the pin. Essentially, the car was rear drive. After tightening it and swapping back to the stock TC4 body, I tried again the following day. Same speed, but at least it was controllable. ...Until I hit full brakes (which were set at 60%) at full speed. Now I'm waiting for a new spur gear in the mail.
Glad you got your TC4 running better. How much faster are you trying to get it?
My fastest mph so far is 108 mph with the 5700kv on 4s. Gearing is 55/43.
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Old 12-01-2014, 04:40 PM   #13164
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I was hoping to get 70+mph with that setup. My other TC4 is running a Hobbywing 120A esc with a Turnigy 9.5T (4120kv) on 2S and will break 40mph geared at 66/24 when running boosted. It seemed to me that the higher kv motor, lower gear ratio, and 3S battery would give me more than another 50% speed combined. I guess aerodynamic drag becomes much more significant as speeds get that high?
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Old 12-01-2014, 05:38 PM   #13165
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I was hoping to get 70+mph with that setup. My other TC4 is running a Hobbywing 120A esc with a Turnigy 9.5T (4120kv) on 2S and will break 40mph geared at 66/24 when running boosted. It seemed to me that the higher kv motor, lower gear ratio, and 3S battery would give me more than another 50% speed combined. I guess aerodynamic drag becomes much more significant as speeds get that high?
I think you just need a bigger pinion gear/smaller spur. 66s/27p is only 6.11 gearing. Most serious top speed cars run about 3.0 gearing. You could probably reach 70 mph with around 4.7 gearing from my experience. Make sure you got some good fans/heatsink and keep an eye on temps. A more aerodynamic body will help too. I run a modified HPI F1 Mclaren body.
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Old 12-02-2014, 09:31 AM   #13166
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Recently got a 3d printer and decided to play with making tc4 parts .
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Old 12-02-2014, 09:56 AM   #13167
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Recently got a 3d printer and decided to play with making tc4 parts .
Wow, how strong are the plastics? Didn't think the personal printers could do that stuff yet.

I like that rear toe plate.
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Old 12-02-2014, 10:20 AM   #13168
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Wow, how strong are the plastics? Didn't think the personal printers could do that stuff yet.

I like that rear toe plate.
they seem plenty strong . they are abs so i wont really know till i take it to the track and try it out.
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Old 12-02-2014, 10:43 AM   #13169
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Hey, Jeff!! I'm talented at stress testing and finding the limits of materials!
Love the parts. Adj rear toe and anti-squat is interesting. NOW if you can find a way to get a gear diff to fit....

Scott
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Old 12-02-2014, 12:13 PM   #13170
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Recently got a 3d printer and decided to play with making tc4 parts .
Very nice work Jeff... I wonder if that rear plate could be made out of Carbon Fiber ..??
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