Direct to diff outrunner conversion*update*

We did a direct to diff conversion on a Kyosho Inferno GT with a Neu 1512 1900kv motor. On 5S with 3.9" GRP Rally tires, we clocked it in excess of 90 mph several times.

What is the kv rating of the motor that you are using there?

[lincpimp]

Motor is a 833kv outrunner, got it cheap off ebay.

Not too familiar with the power output of the various sized outrunners. I would do a lower kv next time, 650kv sounds about right. I would also go bigger, like a 45mm can that is longer, so more torque. This setup has plenty of power, but the truck is very light, so that helps. This is not suited to off road IMO, it works great on road, very smooth with the quark and less drivetrain resistance than with a pinion/spur. Seems to be effecient too, not enough testing yet to be sure though.

[zeropointbug]

http://www.greathobbies.com/producti...d_id=EFLM4060A

OR

http://www.greathobbies.com/producti...d_id=EFLM4046A

Those are 50mm cans, and the Power 60 does 1200 watts continuous. It weights the same as an XL motor. 380 grams You can also take the shaft out, and make a custom one, or whatever.

[lincpimp]

Originally Posted by zeropointbug

http://www.greathobbies.com/producti...d_id=EFLM4060A

OR

http://www.greathobbies.com/producti...d_id=EFLM4046A

Those are 50mm cans, and the Power 60 does 1200 watts continuous. It weights the same as an XL motor. 380 grams You can also take the shaft out, and make a custom one, or whatever.

Thanks for the links ZPB (can I call you buggie?)

The 46 size 670 kv looks interesting, The lower kv would let me put larger tires back on it and have more torque for startup. Do you think that the quark 65 would be ablee to handle that motor? Plus I would need to step up to better batteries, I have a pair of 20c 5000 2s lipos to run. And my motor mount would have to be remade to accomodate the larger can size. I will see about finding one of these motors and change up my setup.

[zeropointbug]

Originally Posted by lincpimp

Thanks for the links ZPB (can I call you buggie?)

The 46 size 670 kv looks interesting, The lower kv would let me put larger tires back on it and have more torque for startup. Do you think that the quark 65 would be ablee to handle that motor? Plus I would need to step up to better batteries, I have a pair of 20c 5000 2s lipos to run. And my motor mount would have to be remade to accomodate the larger can size. I will see about finding one of these motors and change up my setup.

Call me buggie? lol sure....

I am not sure if the Quark 65 would handle it. What kind of speed would that get you with 670kv? That is what you need to know.

Now I am curious about running one of these in my Revo... I am gonna go do some calcs.

[Hickoryhead]

Originally Posted by AAngel

We did a direct to diff conversion on a Kyosho Inferno GT with a Neu 1512 1900kv motor. On 5S with 3.9" GRP Rally tires, we clocked it in excess of 90 mph several times.

AAngel, I would like to hear more about your conversion. How did you mount it to the transmission? Did you modify the motor or leave it stock? Who is we and do you or they have pictures? What kind temps did you get? What batteries where you running with?

For me I would like to see this all happen. Both outrunner and inrunner. I like seeing new stuff come to pass. There are many people were I live and on this forum that can't afford to build what most of us talk about. They can't spend the kind of money we do on Lehner's, Neu's, Quark's.... I can see a way for others to build what we have at a 3rd of the cost.
Thumbs up to every one commited to this project!!!

[zeropointbug]

These Scorpian motors look great, I would like to see the 40mm cans... in my hands.

I am just thinking about how much more space I would have on my Revo if the motor was gone from the engine mount, no tranny, and the outrunner motor was mounted down kinda under the tranny. wow. Get some bullet proof diffs and you are set! Nothing to wear out in the tranny... at least anytime soon.

[sikeston34m]

Originally Posted by zeropointbug

These Scorpian motors look great, I would like to see the 40mm cans... in my hands.

I am just thinking about how much more space I would have on my Revo if the motor was gone from the engine mount, no tranny, and the outrunner motor was mounted down kinda under the tranny. wow. Get some bullet proof diffs and you are set! Nothing to wear out in the tranny... at least anytime soon.

Yes ZPB, that's exactly what I'm thinking of. The motor will set about 60% "submerged" in the chassis. Just enough to make the drive shafts as straight as possible.

RCM has the 4.3:1 diff gears. This will drop the gear ratio to almost equal to an E maxx locked in second gear. If more gear reduction is needed, we can do that with the tire height.

The end result will be alot of lost weight. There will be alot of room opened up on the already tight E-Revo chassis. Alot of wear items eliminated means this thing is going to perform longer and hold up better.

[zeropointbug]

The only thing that I am wondering about is the 'spool up' of an outrunner in this configuration... will it have enough 'zap' to make for a pleasant throttle response, you know?