Upcoming Castle Outrunner Motors

[sikeston34m]

Originally Posted by MetalMan

Where is Patrick when you need him?
But to be fair, Metallover would need one too

Yeppers, after all, Metallover was the one that sent the spark that got this fire going again.

[Metallover]

Originally Posted by sikeston34m

Yeppers, after all, Metallover was the one that sent the spark that got this fire going again.

That's too true. I'm the most deserving person on this forum.

But really... I am.

[lincpimp]

Originally Posted by Metallover

That's too true. I'm the most deserving person on this forum.

But really... I am.

And the most modest too. Wow you are definately a catch!

(the preceeding was complete sarcasm, no aminals were harmed in the making of this sarcasm)

[What's_nitro?]

Originally Posted by lincpimp

(the preceeding was complete sarcasm, no aminals were harmed in the making of this sarcasm)

Closed-captioning provided by:

[Metallover]

Originally Posted by lincpimp

And the most modest too. Wow you are definately a catch!

(the preceeding was complete sarcasm, no aminals were harmed in the making of this sarcasm)

I'm working on the Modest-ness. Off the forums I have started to show people my projects. I actually drove my crt in front of my dad the other day! I even revved my bad ass 318 for the first time!

[SunnyHouTX]

Originally Posted by MetalMan

The max RPM will greatly depend on the diameter of the motor. However, many 800kv motors won't be able to cope with more than probably 6s.

So if I remove the center diff of my truggy and replace it with the 770Kv Castle outrunner, it should be OK, correct? Max RPM with a fully charged 6S is about 19,400. Run times should be much longer than what I get with my Medusa 36-70-2000?

Thanks for your input.

[MetalMan]

Originally Posted by SunnyHouTX

So if I remove the center diff of my truggy and replace it with the 770Kv Castle outrunner, it should be OK, correct? Max RPM with a fully charged 6S is about 19,400. Run times should be much longer than what I get with my Medusa 36-70-2000?

Thanks for your input.

Can't comment on the max. RPM of the Castle outrunners, but as a guess I would say that RPM is too much.
Also, assuming a truggy diff ratio, your theoretical top speed is past 60mph which is IMO too much stress to put on a reasonably sized outrunner.
A kv of up to 550 will net a top speed of about 45mph, which is the highest I think you should shoot for (again, my opinion). Outrunners don't make the same power inrunners do.

[SunnyHouTX]

You are correct, with a CC 770Kv outrunner, the theoretical top speed will be about 66mph without any losses factored in. At 30% loss, top speed will be about 45mph. Of course I can set throttle EPA lower if it gets to be too uncontrollable. To me that point where I lose control comes in at around 60mph for a 1/8 scale. I am worried more about overheating and demagging the motor. I really don't want that to happen.

Now, when you say that outrunners don't make the same power as inrunners, does it mean that the motor will tend to overheat piddling around in my truggy? Or will the outrunner generate enough torque for a lower amp value (lower power) to move the truck satisfactorily?

Thanks MetalMan.

[brushlessboy16]

770 is definately way to high of a kv, i ran a Buggy with a 550kv motor and it was always smoking hot after a run.. but yeah they are torque monsters.

[DLS II]

You mean like this?

[SunnyHouTX]

Yes, EXACTLY like that. That looks great DLS II. What Kv is that then? Where can I get one? And what true speeds are you getting out of it? And how long of a run time?

[rotary rocket]

DLS, how did you mount that motor? I love your setup.

Close up shots of the motor mount would be great.

[MetalMan]

Originally Posted by SunnyHouTX

Now, when you say that outrunners don't make the same power as inrunners, does it mean that the motor will tend to overheat piddling around in my truggy? Or will the outrunner generate enough torque for a lower amp value (lower power) to move the truck satisfactorily?

Thanks MetalMan.

This is a hard comparison to make, considering the use of outrunners in cars is still relatively new and untested. However, for the same weight as an inrunner, outrunners generally are rated for less power. They do produce a lot of torque, as noted above, but I can't make a direct comparison to inrunners.

Just remember that your truck will require a certain level of power to move/accelerate, which won't necessarily be dependent on the motor.

[DLS II]

The motor is 600kv. It weighs 7.75 lbs. I've yet to test it. It should do 40-45 mph and run (I hope) 15 min. The mount was made by Monster Mike. I tried getting some shots of the mount, but they didn't come out so well. It's set up 6s A123. The outrunner is a Rimfire 42-60-600. The car is a Kyosho MP-6. I call it an EMP-6. The motor mount is secured to the stationary end of the motor with 4 screws. It bolts down to the front 2 mount holes of the center diff. It is secured by the top brace that runs from the top of the mount to the steering assembly brace. It came out very well. Mike's work-mount,brace,rear dog bone and design are superb! Don

[SunnyHouTX]

Thanks for the info DLSII and MetalMan. Looks like I will have to keep running inrunners for the time being.