Traxxas 4-Tec Conversion - Page 4 - RC-Monster Forums

lincpimp · 03.30.2009, 04:09 PM

Must be that specific motor, all of my 12t motors brake fine. The 12t setup in the blackfoot will stand on its nose with full brakes.

BrianG · 03.30.2009, 04:21 PM

KMN: Yeah, the caps are on there. One from + to the can, and one from the - to the can. Nothing between the two terminals though, but it came that way from Trx.

Linc: Do you have a Titan 550 12T? Maybe other 12T motors are different, but the Titan does not brake well at all. Then again, maybe the motor is on it's way out anyway since I was running 10 cells on it in the Slash for a while.

lincpimp · 03.30.2009, 06:07 PM

Quote:

Originally Posted by BrianG

KMN: Yeah, the caps are on there. One from + to the can, and one from the - to the can. Nothing between the two terminals though, but it came that way from Trx.

Linc: Do you have a Titan 550 12T? Maybe other 12T motors are different, but the Titan does not brake well at all. Then again, maybe the motor is on it's way out anyway since I was running 10 cells on it in the Slash for a while.

I have a few of the traxxas 12t titans, all work fine for me... I think you have a bad one...

KMN · 03.31.2009, 02:59 AM

Quote:

Originally Posted by BrianG

KMN: Yeah, the caps are on there. One from + to the can, and one from the - to the can. Nothing between the two terminals though, but it came that way from Trx.

Linc: Do you have a Titan 550 12T? Maybe other 12T motors are different, but the Titan does not brake well at all. Then again, maybe the motor is on it's way out anyway since I was running 10 cells on it in the Slash for a while.

Sounds like the problem, she's on her way out. Brushes provide all of the braking force in a brushed motor. When they start to wear out, the brakes go first, and after a while they go into "kick start" mode. You'll have to give it a nudge to get it going.

Being labeled as a "12T" motor, and having no experience other than seeing a few peoples problems with them... They're pretty cheap stockers. All of the closed endbell motors that I have run in the past have eventually had the "no brakes" problem though.

BrianG · 03.30.2009, 06:27 PM

Well, I'm not gonna go buy another throw away Titan motor when I can get a Medusa. Until then, curbs/people/trees/cars are gonna have to serve as my braking method.

BrianG · 03.31.2009, 11:01 AM

Kinda figured. I really didn't care about abusing it since it's a crappy motor anyway.

But, even when brand new in the Slash, brakes were always piss poor. So, either the motor was not perfect from the start, I broke it in wrong, the XL-5 ESC brakes suck, or I'm just used to BL braking...

Arct1k · 03.31.2009, 11:11 AM

Option E all of the above... :)

BrianG · 04.05.2009, 12:54 PM

Ok, I'm shopping around for a motor for this setup. I have no more than 67mm mounting length to work with and I'll be running 3s.

I was gonna go with a Medusa 36-60-3100 (SE version), or a Medusa 36-50-3300 (regular or SE version), but I'm also eyeballing the VXL motor. I really like the solder tabs and cover, it's between a 50mm and 60mm motor (55mm), and it's slotless. For this project, I don't need the torque of a slotted stator style, so this might work out the best.

How do these compare to a similar Medusa temp-wise?

lincpimp · 04.05.2009, 01:08 PM

Quote:

Originally Posted by BrianG

Ok, I'm shopping around for a motor for this setup. I have no more than 67mm mounting length to work with and I'll be running 3s.

I was gonna go with a Medusa 36-60-3100 (SE version), or a Medusa 36-50-3300 (regular or SE version), but I'm also eyeballing the VXL motor. I really like the solder tabs and cover, it's between a 50mm and 60mm motor (55mm), and it's slotless. For this project, I don't need the torque of a slotted stator style, so this might work out the best.

How do these compare to a similar Medusa temp-wise?

Well, the vxl motor is just a feigao s can motor. So based on experience with those it should be ok, I would still go with a 50mm medusa. But that is just me. I have had good success with the 15l in my 4 tec, temps are great on 5s. Even geared for 60mph. For some reason tires will not stay on the car though...

A hacker b50 s can would be a better choice over the vxl motor. But the vxl motors are cheap, and many people can get emaxx's to do 140mph with them on 1s lipo, or something like that...

BrianG · 04.05.2009, 01:24 PM

lol, 140mph on 1s in a maxx, eh? Did they mention this was falling off a cliff?

After I posted this, I did some more research and it appears that the VXL is indeed an S motor; the 10s to be exact. Same turn count/kv, and is slotless 2 pole. Yup, a Feigao all right. Hmm, too bad too. I really like the solder tabs; would've made hookup much cleaner. Might contact Mike to see if he has just the motors. 3s 3300mAh lipos won't last a really long time and I'm not shooting for stupid speeds, so temps should be ok. I dunno. Why does Medusa have to have those stiff exit wires? Probably to make my life difficult...

And a Hacker is more than I want to spend for this project TBH, unless you can get one is really good condition (prefereably new) for ~$70-90.

lincpimp · 04.05.2009, 01:28 PM

Quote:

Originally Posted by BrianG

lol, 140mph on 1s in a maxx, eh? Did they mention this was falling off a cliff?

After I posted this, I did some more research and it appears that the VXL is indeed an S motor; the 10s to be exact. Same turn count/kv, and is slotless 2 pole. Yup, a Feigao all right. Hmm, too bad too. I really like the solder tabs; would've made hookup much cleaner. Might contact Mike to see if he has just the motors. 3s 3300mAh lipos won't last a really long time and I'm not shooting for stupid speeds, so temps should be ok. I dunno. Why does Medusa have to have those stiff exit wires? Probably to make my life difficult...

And a Hacker is more than I want to spend for this project TBH, unless you can get one is really good condition (prefereably new) for ~$70-90.

Yep, hard to find a hacker like that, You could also look into the feigao 380c L can motors, or a novak hv, like a 6.5. That is a nice motor, maybe too long for your setup, but would work great for 3s in that beast, and has solder tabs... 2 pole as well.

BrianG · 04.05.2009, 01:32 PM

If I'm gonna go Feigao, I might as well just get the VXL motor. The Novak HV is too long (72.1mm and I have no more than 67mm) and pricey for what it is IMO.

This isn't a really "serious" setup, so I hesitate to spend a ton of cash on it. Most of it was put together from extra stuff I had laying around and a couple custom parts.

lincpimp · 04.05.2009, 01:35 PM

Quote:

Originally Posted by BrianG

If I'm gonna go Feigao, I might as well just get the VXL motor. The Novak HV is too long (72.1mm and I have no more than 67mm) and pricey for what it is IMO.

This isn't a really "serious" setup, so I hesitate to spend a ton of cash on it. Most of it was put together from extra stuff I had laying around and a couple custom parts.

The vxl motor will be fine, but how much can you get one for? Better be cheap, like 30-40 bucks, new.

BrianG · 04.05.2009, 01:46 PM

Don't know yet. Ebay has them for $59, but I might give Mike a call and see if he offers them seperate from the ESC.

lincpimp · 04.05.2009, 01:54 PM

Quote:

Originally Posted by BrianG

Don't know yet. Ebay has them for $59, but I might give Mike a call and see if he offers them seperate from the ESC.

60 bucks is a bit steep, IMO. Just a feigao motor. See what Mike can do!