vega's blog

143 kph/88.85 mph, 50%-60% of throttle

2008-09-15T22:33:00.000-07:00

Again, I'm still continuing the test. Today I got 143 kph on my radar gun with a little bit over 50% to 60% of throttle. I tried to push the car more but I couldn't. I had 3 runs, and in the last run the car was flipped twice, and the receiver battery went off. So I didn't continue the test. Next time I will try to push it more.

134 kph/83.26 mph, 50% of throttle

2008-09-12T19:40:00.000-07:00

I have changed the system to Neu 1509/2Y and CC-HV with 10s Lipo. The car is geared to 2.75:1. I went to test it, and I got 134 on the radar gun with 50% of the throttle. The weather was windy. I hope I can push it to100% of throttle before I travel :)

Below are the video of my test and some pictures of the car.

My Tamiya TA-05 pics.

2008-09-09T11:05:00.000-07:00

Video of the cars cars

2008-09-09T11:03:00.000-07:00

Some pics of my friends cars

2008-09-08T20:36:00.000-07:00

Today, me and friends we meet in some place, just for fun and not for speed run.
Below are the pictures of our cars. The yellow Corvette is my Tamiya TA-05, and the red one is my TC4.

151 kph / 93.82 mph with Tamiya TA-05

2008-09-03T23:12:00.000-07:00

Finally got something makes me happy, and satisfied. I went to run my car, and I got 151kph/93.82mph on my radar. The weather was wet, and the street is very good, and clean, but sloppy (this is one of the reason explains why my car's speed is 93 and not more).

My car is Tamiya TA-05 4WD belt drive with the following setup:
ESC: Mamba Max
Motor: Mamba CMS-7700
Battery: Flight Power 4s lipo
Servo: Futaba S3050
Internal gear ratio: 2:1
Spur gear: 75T
Pinion gear: 30T
Total gear ratio: 5:1
Body: HPI Corvette (modified, wings are added)

Now it's Neu turn to break 200kph :)

134 kph/83.26 mph with Tamiya TA-05

2008-09-03T15:53:00.000-07:00

Today I went to test my car at 5pm. The radar was reading correctly, and I got 134kph. After a while, the radar gun gave me wrong readings because the batteries are dissipated.

This test was unsuccessful because of the wrong reading. The first 2 runs, which are in the video below, are successful reading. The speed of 2 cars which passed the radar was approximately 110khp and below.

I have just replaced the batteries of the radar, and I'm going to re-run the car again with mamba max.

The video and the picture are below. The weather in this run was very wet (In Kuwait), and the temperature was approximately betwen 38 to 42 celsius.

148 kph / 91.96 mph with Tamiya TA-05

2008-09-01T20:44:00.000-07:00

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

2008-08-26T17:40:00.000-07:00

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

2008-08-19T18:12:00.000-07:00

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

2008-08-16T17:01:00.000-07:00

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

2008-06-18T14:59:00.000-07:00

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

Tamiya semi-assembled

2008-05-25T23:52:00.000-07:00

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

2008-05-14T00:16:00.000-07:00

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).

Old test video for my custom works 2WD

2008-05-13T00:52:00.000-07:00

This is an old video shows my test for the custom works 2wd, I still didn't push the trigger to 100%, because I have faced some issues with the gear. So I was just testing the car.

This video was recorded in Kuwait at 6am.

Sorry for the bad video quality because I'm using my mobile camera (3.2 mpx)

Modified XRay T2'008 Prototype

2008-05-12T19:29:00.000-07:00

This is my modified XRay T2'008 US edistion 1/10 scale prototype.
The equipment that will be installed on this car are same as
that are in my Tamiya except that the gears ratio are differ.

The only thing modified is the motor mount. Actually I created a
new motor mount from scratch.

Here are the specification of this car:

Motor: Neumotor 1515/3D
Batteries: Thunderpower 3S+3S+6S = 12S
ESC: CC HV110
Internal gear ratio: 1.7
Final gear ratio: 1.7 * (60/150) = 0.68
OR
Final gear ratio: 1.7 * (60/120) = 0.85
since the the gear with 150T may hit the body (I may cut the body from the top).

Tamiya Evo 5: More photos

2008-05-12T18:59:00.000-07:00

These are some photos of my Tamiya Evo 5.

Modified Tamiya Prototype

2008-05-04T02:02:00.000-07:00

This is my modified Tamiya Evo 5. I put all the batteries, and also I mounted the motor. This is what it will look like. I'm going to install:

Motor: Neumotor 1515/3D
Batteries: Thunderpower 3S+3S+6S = 12S
ESC: CC HV110
Final gear ratio: 1.42

The only thing modified is the motor mount.

New car

2008-03-08T11:54:00.000-08:00

This is my last 1/10 scale car, and I have a feeling that tells me this car will be going the fastest one (it will run at least 150+ mph, and it may reach 200+ mph). I'm not going to tell what equipment will be installed, but after finishing from it, and measuring its speed I will let you know what kind of equipments are installed.

You may know the car from the picture. I have done only 1 modification, I created a new motor mount and I installed it.

Below are the picture of my Tamiya & new car.

XRay 1/18 Pro Micro

2008-03-08T11:50:00.000-08:00

I bought it because it is small, and I like small things LOL. But it is really fast, I still didn't run it and also I didn't measure its speed. The big car is my Tamiya 1/10 and it is still not completed because I'm busy with my study.

Modification on Tamiya

2007-12-11T19:47:00.000-08:00

Currently I'm trying to modify the chassis so that there will be a place for the batteries.
Also I'm working on modifying the motor mount, I'm waiting the CAD file to be designed.

Once the CAD is finished, I will go to some machinist to cut the new modified motor mount for me.

Once I finish from the motor mount, later I will publish about it in details. If there is any helper, I will list him/her/them in the blog.

Tamiya Evolution 5 on the way

2007-12-11T19:36:00.000-08:00

I got Tamiya Evo. 5 since 2 months, and I have built it. Now I'm going to work on 2 cars, 2wd and 4wd drive. I'm still working on them and it will take some time since I will be busy with my study.

Here are few pictures of my new car:

Going abroad & another car on the way

2007-09-22T09:00:00.000-07:00

Hello,

My RC car is finished, and I'm looking for long road to test my car with full speed. But I will stop working on my RC car right now since I'm going abroad and I can't bring all kits, tools, ... etc with me.

Now I'm thinking to build another car, and the old one will remain in my home so that once I get back I will work on it. The first car is finished, and as I said its theoritical speed is 160+ mph and the practical one is ??? unknown. The second car which I will build will be with me while I'm abroad, and maybe I will publish its information later.

Venom is burned since it cannot hold 9999+ mph :P

2007-09-18T10:44:00.000-07:00

I was testing my car, and my venom speed meter is burned since it is 4 digits, and my car was over 9999+ mph (just kidding :P).

Seriously, It is burned because the sensor had broken, and the mechanical power produces electrical power, and then from electrical power a heat power produced then it burned.
I broke the tail of the sensor so that I can place it closed to the wheel, but the head of the sensor has been broken and it is the cause of the burning.

I was going very very fast, I wish that I saw the meter before it's burned. I'm going to replace it and test the car again before I travel.

Here are some pictures. The burned venom, and the broken sensor.

98mph with 45%-60% of throttle on suface

2007-09-13T19:24:00.000-07:00

I have tested my car today at 5am, I got 98mph with 45% to 60% of throttle on surface, and suddenly it flew LOL. "Thanks God it did not crash" :).

The car flew because I pushed on the trigger quickly to speed up the car since the road is not long enough to run the car with full speed. I should push on the trigger slowly so that the car will not fly.

Still I did not test my car with full speed neither on surface or air.

Here are some pictures that shows the speed meter with 98mph:

New painted body

2007-09-10T06:37:00.000-07:00

Today I have painted the new body which I bought last week.
Here are some pictures of my car with new painted body:

2 Tests: 117mph & 195mph on air

2007-09-03T11:12:00.000-07:00

Today I was testing my car on air, half of it was on the table, and the second half of my car was on air (The drive wheel). I didn't find a clean and long road to test my car, but once day I will find it and I will test my car on surface.

I went through 2 tests, and here is my description for both of them:
the first test was 117mph with 30%-40% of throttle, I was afraid while I'm holding the car ad it is running, and then I stopped the car because I lost a screw that I didn't tight it very well. I tight all parts that are not tight very well.

The second test was 195mph, and the throttle was between 50%-60%. Unfortunately, I lost the magnet of the speed meter (Thanks God it didn't go to my eyes). Once it went to 195mph then the meter quickly went to 0000mph LOL, the magnet which I place it on the gear is gone.

I was afraid while I'm holding the car by my hand since it is running 200+mph and it is shaking my hand.

My testing was on air, and not on surface, and since I got 195mph with throttle was between 50% to 60%, I'm sure it will be more than 250mph on air with full of throttle.

On the surface It will be at least 160mph since there are a lot of factors can affect speed.

I have recorded the car with my phone camera, and I was confused once I got 195mph because I'm holding a car while it is running very fast and then I stopped the camera and I closed the receiver, and receiver shuts down the speed meter. unfortunately I didn't take a picture of the fastest speed.

Here are some videos (I hope they are clear):

First test 117 mph

Second test 195mph

Few changes on my RC car

2007-09-01T16:46:00.001-07:00

I just got my new RC car body, digital servo, speed meter.

Here are my modificaion:
The gear ratio was 2.166:1, and now it is 1.5:1.
New Body (Custom Works)
Speed meter: Venom
Futaba digital servo.

Here are some pictures after modification:

My RC Car

2007-08-31T04:26:00.000-07:00

Hello,

I have read news about the fastest RC car in world, and now I'm following the news about fastest RC car on Nic's site fastestrc.blogspot.com.

I have encouraged to build my own RC car and make it as fast as I can according to my background. I'm still reading about everything related to RC car and how to make it as fast as possible.

I have learned a lot about motor, and what factors that can make the car run fast.

My car specifications are:
Chassis: Custom Works Slider Kit.
Drive: 2W Front Drive
Radio: Futaba 3PK
Servo: Futaba S3305 (Maybe it will be changed to a digital servo)
Motor: NeuMotor 1509/2y
ESC: CC HV-85
Gear ratio: 1.5:1 (it will bechanged to 1:1 or lower if it is possible)
Tire: BSR Purple/Jaco Purple (Currently they are under the testing)
Batteries: 8s lipo

Note:
Total Motor RPM: 1820 (per volt)x 29.6 (8s lipo) = 53872
Tire diameter: 58-60 mm

I'm taking the worst case senario with consideration of factors (weather,air, wind, surface ... etc) that may affect the speed:
Total Motor RPM: 35000
Tire Diameter: 58mm
Gear ratio: 1.5:1

The speed has been calculated according to these sites:
http://www.easy-rc.com/cgi-bin/gearratios.cgi
http://www.teamassociated.com/racerhub/techhelp/marc/JavaMath.html

Theaoritical Speed: 160+ mph
Practical Speed: ??

I took this car from the shelf, and nothing is hand made. All parts are on the shelf without any hand made.Except that I cut a small piece from car so that the motor can fit very well in its place.

Best regards,
vega

Here some pictures of my car: