148 kph / 91.96 mph with Tamiya TA-05

I just came from testing my car, it was 6:15am. The place which I ran my car is a new spot. I think I will stick with this spot until I find another good spot. The length of the road was approximately 2km to 3km, but there were a lot of big cars (6 wheels) that their speed was between 60 to 80kph, and I can't take my rest there. Once I found another spot I will run my car there.

The car was running very fast, it was 148kph. Below is the picture of my run. I'm so sorry because I don't have any video,I regret for that , for this test since my phone came is a cybershot and its video quality is very low. In addition to that, my phone camera (video only) is not working, once I push record it stops recording immediately because of the software damage. Anyway it is an old phone. Next time I will try to borrow my brother's camera.

118 kph/73.32 mph with Tamiya TA-05

I just came from testing my car, I have reached 118 kph/73.32 mph. It is still not full of throttle, again same reason as previous test. Below are the video and the picture of the speed.

Sorry for the low quality of the video. I was using my phone camera 3.2mp.

115 kph/71.45 mph with Tamiya TA-05

Today I have tested my car again, and I got 115 kph/71.45 mph in the last run using Mamba Max 7700 with 4 cells, and the gear ratio is 5.175. The parking lot was not long enough, and it is approximately 170 meters. I still didn't give it the full throttle, and I feel that car can do more than that it does.

I will try to find another spot next time. Here are the video and a picture of my run and radar.

112 kph/69.59 mph with Tamiya TA-05

I went to test my car with my friend last week, and I had several runs.
Before the last run I got 105 kph, and I got 112 kph for the last run.

By using google calculator I got: 112 kph = 69.5935735 mph

After passing the radar I continued to push my car more, and I got 77 mph with the venom speed meter which is installed in the car.

Note that the energy of the battery in the last two runs was almost fully dissipated. I tried to discharge it completely but i was unable to discharge it since the battery has low energy and its voltage was 12 and something. So I fully charged the battery, and I got 16.8v. I hope next time I run it with a fully charged battery.

The total gear ratio was 6.21, and I'm going to reduce it to 5.175.

below are the video and pictures of my test:

Tamiya: 2.145 KG

After installing all the equipments on my Tamiya, I decided to measure its weight. This is what I got:

Tamiya semi-assembled

Below are two pictures of my Tamiya with batteries & ESC installed.
Next, I'm going to install the receiver and the motor after awhile.

The theoretical speed of Tamiya & XRay

Below you find the estimated theoretical speed, all calculations are done by using this website: http://www.easy-rc.com/cgi-bin/gearratios.cgi

Wheel diameter (mm): 60 (I used 60 as a worst case and not 62, 63, or 64)
Motor max speed (RPM): 35000 (I put this number as a worst case, the actual number is 12S * 3.7 * 1360rpm = 60384)

Tamiya TB Evo 5 results:
Final gear ratio: 1.5:1
Its roll-out is: 125 mm/revolution (4 inches/revolution)
Its maximum speed is: 263 km/hour (163 miles/hours)



XRay T2'008 results:
Final gear ratio: 0.68 (Pinion 150T)
Its roll-out is: 277 mm/revolution (10 inches/revolution)
Its maximum speed is: 582 km/hour (361 miles/hours)
LOL IT IS REALLY GONA FLY!!

Final gear ratio: 0.85 (Pinion 120T)
Its roll-out is: 221 mm/revolution (8 inches/revolution)
Its maximum speed is: 465 km/hour (289 miles/hours)

Final gear ratio: 1.02 (Pinion 100T)
Its roll-out is: 184 mm/revolution (7 inches/revolution)
Its maximum speed is: 388 km/hour (241 miles/hours)

I will measure the actual speed when I have a chance to run them after testing them (I know that it will take some time to reach the goal).