Direct to Diff Redcat Updates

[sikeston34m]

Woo Hoo! The Mail Lady came today bearing gifts!


Hey! There's something there on the left that you could use Linc. (Notice: The little smiley is looking right at it! LOL)

[lincpimp]

Originally Posted by sikeston34m

Hey! There's something there on the left that you could use Linc. (Notice: The little smiley is looking right at it! LOL)

Yeah, I have 2 of the ccbec brand new in the packs. I like to attach them to the esc wires by means of a short length of small gauge wire with a micro deans on it. That way I can remove the esc without having to remove the bec. For 20 bucks or so the ccbec is cheap enought to have one on each vehicle. I need some micro connectors so I just used the rec pack.

Metalman: so far the red cat seems to be well made in the diff and suspension department. I am having issues with the steering servo saver that is built into the bellcrank. I will try to find a stronger spring to tighten it up, it is a little sloppy at the moment. I am actually thinking of moving the steering servo and the motor mount so that I can fit an emaxx tray on the battery side of the chassis. Would lower my cg and look neater. I am sure that the off set motor would be ok, as the torque effect would be less pronounced. Moving the motor over would give the chassis more leverage in counteracting the torquing of the motor. I wil lift the steering side tires almost off the ground under hard acceration now!

[sikeston34m]

How hard does it accelerate?

[BL_RV0]

let us know how that fan works.

[lincpimp]

Originally Posted by sikeston34m

How hard does it accelerate?

Very Hard!!!!

If you punch it from a standstill it takes off spinning the tires violently, and then usually torques the chassis and unloads both tires on one side and then spins out, sometimes flipping over. Once the tires warm up the grip much better and that helps. It is not slow at all, must be near 40mph, need to radar it when I charge the battery again.

[sikeston34m]

Originally Posted by lincpimp

Very Hard!!!!

If you punch it from a standstill it takes off spinning the tires violently, and then usually torques the chassis and unloads both tires on one side and then spins out, sometimes flipping over. Once the tires warm up the grip much better and that helps. It is not slow at all, must be near 40mph, need to radar it when I charge the battery again.

There has been some concern expressed in the past about "spool up" time when using outrunner motors. How would you describe the AXI's "spool up" time?

Can you get us a video sometime?

I thought you might be pleased with that motor.

[lincpimp]

Ahh "spool up time"

I will say that it does not spool up as fast as an inrunner with a transmission. Now I will also say that I do not have any experience with a direct to diff setup using an inrunner. I will say that my experiences running an align 600 l and xl thru a stock emaxx tranny on 5s was different than a similar inrunner setup. The align had tons of power, but it did accelerae more smoothly, and slightly slower. Still emough rpm to brake the tires loose and wheely, but not as violent as a similar kv inrunner with the same batts, gearing, etc.

The axi in the redcat can still light up the tires till 20mph or so and has enough rpm to flip it over if the tires get loose and it slides sideways. I may try a monster 125 and 4s 5000 20c batts with some taller tires and see how the startup is. The taller tires should make the motor work harder and the 125 and 5k batts should be able to provide the necessary current if the motor needs alot to get moving. Performance on 5s is great, but I would like to run a taller tire and if I stick with 5s it will be geared for almost 60mph, which is a bit much.

[sikeston34m]

Originally Posted by lincpimp

Ahh "spool up time"

I will say that it does not spool up as fast as an inrunner with a transmission. Now I will also say that I do not have any experience with a direct to diff setup using an inrunner. I will say that my experiences running an align 600 l and xl thru a stock emaxx tranny on 5s was different than a similar inrunner setup. The align had tons of power, but it did accelerae more smoothly, and slightly slower. Still emough rpm to brake the tires loose and wheely, but not as violent as a similar kv inrunner with the same batts, gearing, etc.

The axi in the redcat can still light up the tires till 20mph or so and has enough rpm to flip it over if the tires get loose and it slides sideways. I may try a monster 125 and 4s 5000 20c batts with some taller tires and see how the startup is. The taller tires should make the motor work harder and the 125 and 5k batts should be able to provide the necessary current if the motor needs alot to get moving. Performance on 5s is great, but I would like to run a taller tire and if I stick with 5s it will be geared for almost 60mph, which is a bit much.

The outrunner has plenty of torque to push it geared for 60mph. When you do tire/battery changes, let the starting behavior show you the limits.

With the Revo, I have noticed if I "blip" it to about 1/4 throttle just for an instant, then back off, it starts great.

It doesn't seem to like trying to start with that first small step on the trigger.

Aaah, Rain, Rain, go away. I wanna take my Revo outside and Play.