What are the fastest motor

[Wardy]

Hi i am new to the hobby and wondered what turn motor was the fastest, what brand would you recommend and what esc to go with this motor. I currently have a tt-01 with all hop ups and an rz motor, Is the fastest motor alot faster than what i already have?. I also want to buy another car but want to use my existing controller, where is the best place to buy servo's & receivers and do you have to use the same manufacturer. Cheers.

[mymonsterbeetleisbroken]

Motor "turns" reflects the torque of the motor. The more turns a motor has, the more torque it has.

But, the lower the turns of a motor, the faster its RPM will be.

As its speed your after, you would genrally be looking at a lower turn motor. But dont forget, a lower turn motor has less torque and could effect your cars accelleration by making it slower off the line, but faster in its top speed.

The pinion size and gear ratio then needs to be adjusted to get a balance between top speed and accelleration.

So, a 11 turn motor is loads faster than a 27 turn motor. But the 11 turn motor has less torque, so if you were to try pulling a heavy trailer (very far fetched but just as an example []) the 27 turn motor would pull it along better. 

Nowdays, Brushless motors are the king when it comes to speed. These motors are totally different from your usual brushed motor - i wont go into detail but basicly a brushless motor is very fast and requires little maintenance as it has no electrical contacts inside to wear out.

Brushless is however more expencive, and requires a special speed control.

Back to normal motors - i recommend Mtroniks motors and esc's. They are cheap but very reliable, and their motors are great.

I'd go for an RV Max esc, which has no limit of turns (although 8 turns is about as far down as you can get) and a 15 turn motor.

I've got an mtroniks 15 turn in my tao3-fs. Its got a great balance of speed and power, infact 4 wheel burnouts are almost possible due to the crazy acceleration [H]

[Wardy]

Thankyou so much for that advise and the fact you went to so much detail. Cheers mate

[necronomicon]

Hi Wardy

Another option would be to go for the speed tuned gears for the TT-01 (£6) and the different pinion gears (£3 for 2) to try out different gearing options with the motor you already have.

This would be cheaper and get you nto 'tinkering' etc with the gearing options and learning about the TT-01. Also bear in mind with hot motors, more speed= much more wear on tyres and more damage in a crash!

cheers

Neil

[Wardy]

What sort of speed do you think my car runs at mph wise, i just wondered as you see some on ebay saying theirs go 70mph with is an obvious lie i think. Cheers

[rhenbelz]

Probably around 20MPH.

70 is possible with many modern nitro touring cars, but there are a lot of liars out there too.

[Wardy]

Thanks for the reply, so how fast would a 15 turn go cheers

[rhenbelz]

I don't know, it depends on which 15. You can usually find specs on the web.

You'd likely get more speed out of a quality 19 turn motor, with different gearing to take advantage of the crazy torque those things put out.

[DeeMiller]

When it comes to speed: don't guess, use a radar gun.

Why do I say this?

My friend has a nitro 3-speed race car (Parsec) and has a lot of experience with club racing.

He said, the thing goes over 125km/h with a new motor.

He showed it and we thought he was right!

It went like badword!!!

The radar gun showed it ran only 96km/h...

I had the same experience with my Alpine which has a 5,5t brushless motor.

It may look like it's going ridiculous fast but a radar gun (or other device) will show you it's not as high as you may think it is...

I can tell you, 70mph is ridiculous fast...even for a brushless/nitro set-up.

 

Dee.

[Wardy]

On another matter dee, how much did it cost to create that gt40, I need one but i dread to hear the answer lol cheers

[DeeMiller]

I think you mean the one Steve built?

http://www.tamiyaclub.com/showroom_model.a...267&id=5414

 

Dee.

[petris]

If you want to go fast really fast - a brushless setup is the only way to go.  Definitely a bit more money but the difference isn't even close.  My electric (brushless) setup is just as fast as the gas cars at the track!  Check it out.  For ease of purchase a Novak motor/esc combo would do you just fine.  Speeds over 50 MPH are easily obtained  -switch to a 3 cell Li-Po battery pack and you will push the 70 MPH mark before you know what has happened.  Just remember at those speeds aerodynamics do play a role, spoilers and lips make a huge difference!  Good Luck -

[DeeMiller]

Now that we're talking about Lipos: 

-Weight only plays a role in acceleration (and in a lesser role: road contact).

-Resistance (air/road contact/internal) plays a role in top-end speed.

-Gear ratio plays a role in both acceleration and top-end speed.

When you use a Lipo, it will reach it's top-end speed quicker, it will not be higher though, that is, only if the power output of the Lipo is the same as a NiCd/MH, don't know if that's the case though...(would like to know that myself, anyone?).

 

Dee.

 

[rhenbelz]

With brushless, Li-Po will only result in faster acceleration because it can handle current draw better and the battery pack is lighter. This doesn't really matter if you can't put the power to the ground.

Top speed will be a bit higher. Li-Po standard voltage for two cells is 7.4v as opposed to 7.2v for conventional cells. A Li-Po pack is equivalent to a matched standard pack for quality of power.

[DeeMiller]

My thoughts about the 30% lighter LiPo batteries:

You will get a better acceleration due to the degrease of weight but it will also degrease traction.

What advantage is there when you can't put the power to the ground?

Therefore, I'll stick to the NiCd/MH to keep the weight on the (rear)wheels.

More weight is better but it will significantly degrease the accelleration...

It's also important to get as much downforce from the rearwing as possible when you're going over, let's say, 60 km/h.

Only then, a LiPo is more suiteable but on the lower top-end speeds I don't see any advantage in LiPos...

 

Dee.