Thinking about a speed run car - Page 2 - RC-Monster Forums

nitrostarter · 06.03.2009, 12:38 PM

Newer model.

Making a body? Companies do sell them, why make one?

Metallover · 06.03.2009, 12:43 PM

Quote:

Originally Posted by nitrostarter

Newer model.

Making a body? Companies do sell them, why make one?

I want to car to be a low set as possible, have cooling holes, and have a boat tail if possible.

That guy running the tc4 with the 7700 completely stock,,, will I need to upgrade the tc3 to make it hold up to the power the tc4 does?

speedracer1129 · 06.14.2009, 11:07 PM

Quote:

Originally Posted by Metallover

I want to car to be a low set as possible, have cooling holes, and have a boat tail if possible.

That guy running the tc4 with the 7700 completely stock,,, will I need to upgrade the tc3 to make it hold up to the power the tc4 does?

The TC3 and TC4 have the same drivetrain. It will hold the power......

http://www.youtube.com/watch?v=GzRAOMMd8a4

Metallover · 11:45 PM

I just made an offer on a used tc3. $110 shipped. I hope I get it. It's rtr with a 11t brushed motor.

If I get it, I'll have to start thinking about electronics. I could probably borrow my mamba max from the revo. Now I just need the biggest motor that will fit that runs good on 4s.

Turnigy 36-56-2600 5mm shaft - http://www.hobbycity.com/hobbycity/s...600kv_Inrunner

KD 36-60-3000 5mm shaft - http://www.hobbycity.com/hobbycity/s...hless_Inrunner

I want to use a 3.2mm shafted motor as I have lots of pinions that size I want to use. Is it too risky to grind the shaft down to 3.2mm?

lincpimp · 06.04.2009, 01:11 AM

Quote:

Originally Posted by Metallover

I just made an offer on a used tc3. $110 shipped. I hope I get it. It's rtr with a 11t brushed motor.

If I get it, I'll have to start thinking about electronics. I could probably borrow my mamba max from the revo. Now I just need the biggest motor that will fit that runs good on 4s.

Turnigy 36-56-2600 5mm shaft - http://www.hobbycity.com/hobbycity/s...600kv_Inrunner

KD 36-60-3000 5mm shaft - http://www.hobbycity.com/hobbycity/s...hless_Inrunner

I want to use a 3.2mm shafted motor as I have lots of pinions that size I want to use. Is it too risky to grind the shaft down to 3.2mm?

Get a medusa, and you will not want to run heavy batts in a tc, really throws off the balance and causes handling issues. 1/8 shaft is a good idea, as 48p pinion are not too easy to come by in 5mm bore. Or go to a 32p spur, then the sky is the limit with 5mm bore pinions.

Metallover · 06.04.2009, 01:20 AM

Quote:

Originally Posted by lincpimp

Get a medusa, and you will not want to run heavy batts in a tc, really throws off the balance and causes handling issues. 1/8 shaft is a good idea, as 48p pinion are not too easy to come by in 5mm bore. Or go to a 32p spur, then the sky is the limit with 5mm bore pinions.

How do you run light batteries in a speed run car?

lincpimp · 06.04.2009, 01:24 AM

Quote:

Originally Posted by Metallover

How do you run light batteries in a speed run car?

Low mah high C rating... If you really go for all out speed, you are only making a few passes, so runtime is of no concern. Plus you want freshly charged batts, to get the most zap.. Usually after a few passes the voltage comes down a bit, so the speed is not as good. I plan to run a kevlar wrapped rotor hacker 5s motor on 3s lipo in my speed 10th scale. Fan and ubec on the MM or course. Getting all of that tucked into a tc chassis is a tricky proposition.

My layout is similar to the tc3, servo esc and motor on one side and batt on the other. I am using a neu 5000 25c 3s, almost the same weight as the other components...

What's_nitro? · 06.04.2009, 01:23 AM

Let them puff and the hydrogen will make them lighter........

Metallover · 06.04.2009, 01:27 AM

I have a flightpower 30c 3300mah 3s lipo, but I'm not sure that'll have the punch. Maybe I can use that and the frickin castle normally-useless 9000kv motor?

speedracer1129 · 06.14.2009, 11:11 PM

Quote:

Originally Posted by Metallover

I have a flightpower 30c 3300mah 3s lipo, but I'm not sure that'll have the punch. Maybe I can use that and the frickin castle normally-useless 9000kv motor?

This battery fits fine. The above car in the vid is running the same batt but in 4S.

lincpimp · 06.04.2009, 01:29 AM

Stick with the 5700 motor and big pinions... you will be surprised how light a 10th electric tc is. I did 74 with a feigao 380c s can motor and 3s maxamps lipo...

What's_nitro? · 06.04.2009, 01:31 AM

Quote:

Originally Posted by Metallover

I have a flightpower 30c 3300mah 3s lipo, but I'm not sure that'll have the punch. Maybe I can use that and the frickin castle normally-useless 9000kv motor?

That actually sounds like a good combo. Do you think an MM would handle the current?

snellemin · 06.04.2009, 02:27 PM

Quote:

Originally Posted by What's_nitro?

That actually sounds like a good combo. Do you think an MM would handle the current?

It will handle a 2s fine, but 3s will be iffy.

Metallover · 06.04.2009, 02:52 PM

Quote:

Originally Posted by snellemin

It will handle a 2s fine, but 3s will be iffy.

Should do 3s with the bec disabled. I'm getting a fan & cap soon so it should really be able to handle it then.

Metallover · 06.04.2009, 01:33 AM

Would you recommend a 28mm motor, or should I go for a castle motor, or should I get a medusa motor? How will each compare? Why am I asking so many questions?