would this be a good conversion for a direct drive?

[BL_RV0]

http://www.hobbytron.com/GasPoweredR...rdGTJHCH5.html

with this outrunner
http://www.hobbycity.com/hobbycity/s...idProduct=5139

running on 2 of these
http://www.hobbycity.com/hobbycity/s...idProduct=4289

and this esc
http://www.hobbycity.com/hobbycity/s...idProduct=4691

would it work? what speed? btw, this will be a direct drive setup.

[BL-Power]

Originally Posted by BL_RV0

http://www.hobbytron.com/GasPoweredR...rdGTJHCH5.html

with this outrunner
http://www.hobbycity.com/hobbycity/s...idProduct=5139

running on 2 of these
http://www.hobbycity.com/hobbycity/s...idProduct=4289

and this esc
http://www.hobbycity.com/hobbycity/s...idProduct=4691

would it work? what speed? btw, this will be a direct drive setup.

I would use another motor, i think 1500g are a bit heavy. I would look for a motor with around 600g-800g
The Lipos are very nice, i have 2 packs of them and they are nearly as powerful as my Enerland (Polyquest) Lipos.

[lincpimp]

I have a feeling if you bought that vehicle you would leave gas powered as they are tons of fun. I do not do nitro anymore, but the actual gas powered large scale stuff is great and most get at least 30-40min on a tank. I am looking at getting a baja 5b ss kit, just looks like alot of fun!

[What's_nitro?]

Yeah that motor is a bit heavy. On the other hand, it is 3-4 times as powerful as the gas engine it's replacing!

[Hakan_J]

Hmm that page has alot of interesting ecs that I havent seen before, look at this one for instance:
http://www.hobbycity.com/hobbycity/s...idProduct=4316

Very cheap for a 3-6Lipo 120A esc?

[aqwut]

Originally Posted by Hakan_J

Hmm that page has alot of interesting ecs that I havent seen before, look at this one for instance:
http://www.hobbycity.com/hobbycity/s...idProduct=4316

Very cheap for a 3-6Lipo 120A esc?

I have two of those ESCs.. they cog a lot up to 25% throttle(no matter what you do, load or no load..).... after that it's smooth sailing... other than that, the ESC works great... programming is easy also...

[zeropointbug]

Sike, it's 745.7 watts(round to 746) is one horsepower... just so you know, it's a very handy number, I use it a lot.

[sikeston34m]

Originally Posted by zeropointbug

Sike, it's 745.7 watts(round to 746) is one horsepower... just so you know, it's a very handy number, I use it a lot.

Aaah OK. Thanks for the info ZPB.

That's still a whopping outrunner. I wonder how fast it can carry my butt on a bicycle?

I wonder if these figures would plug into the speed calculator? LOL

Mount this motor up where the pedals normally are. Then get that 6 geared step sprocket that mounts on the rear rim, only mount it directly on the motor shaft. Then it would be easy to find the gearing that the motor likes. Even better, would be a setup that could be shifted "on the fly"

Chain drive and run it off Dewalt 36 volt packs. It should boogie.

Ummmm............This doesn't sound like something I could make the Darwin Awards with does it?

LOL

[BrianG]

I think this project would be ideal for a dual brushless setup. A couple of largish size outrunners (so you won't need to gear down a whole lot) running on dual 6s lipos in parallel with dual ESCs. This would let you use relatively cheap ESCs for 5s or 6s operation and lower current. Even at 6s and say 60A each, that's over 3.5HP total. Then, something like the Nomadio radio in "tank mode" (where turning the wheel adjusts the throttle speed of each side) as a sort of differential.

[zeropointbug]

I agree, that motor is WAY overkill... it would be like someone putting a 1527 Neu in a Revo and expecting it to be controllable.

In fact, I would seriously consider a 1527 in this car. Or an outruner, such as THIS.

[lincpimp]

Originally Posted by BrianG

I think this project would be ideal for a dual brushless setup. A couple of largish size outrunners (so you won't need to gear down a whole lot) running on dual 6s lipos in parallel with dual ESCs. This would let you use relatively cheap ESCs for 5s or 6s operation and lower current. Even at 6s and say 60A each, that's over 3.5HP total. Then, something like the Nomadio radio in "tank mode" (where turning the wheel adjusts the throttle speed of each side) as a sort of differential.

I like your idea of dual motors, but how about a pair of outrunners, each powering one diff. I have a hb lightning street, which is basically a stretched out 1/8 buggy with street tires. I was thinking another direct to diff drive, but use two outrunners and two cheap escs, both run on a pair or large lipos, 6s at least, maybe 10000mah total.

Wow, disc brakes on each wheel!

The gas version looks slow. I would consider a Neu 2215/2.5Y powered by a PowerJazz on 14S lipo.

[zeropointbug]

The guy said the car weights 20 lbs... so when you take out that heavy engine, and all components not needed, your weight goes down significantly. WHen all said and done, the total weight could quite possibly be less than the gas version, RTR.

[sikeston34m]

I've read it somewhere that 700 watts of electric power equals 1 horsepower? Is this correct?

If so, the HXT 80-100-A 180Kv Brushless Outrunner is a 10 horse motor!

I just bought a HXT 80-100-A 180Kv Brushless Outrunner. It is HUGE. I'm thinking about doing an Electric Bicycle with it. Running the ESC that you have pictured and power it with 36 volt Dewalt packs.

You'll never get the diffs to hold up to that motor. Which btw, before you decide on a vehicle to do a Direct Drive to Diff conversion on, take a close look at the diffs and the gear ratios of those diffs. What's the diff ratio on this car? Are they upgradeable or tough already?

The dual outrunner thing might be pretty interesting, but the rear diff ALWAYS see the majority of the load. The rear is where you would see the most amp draw and is where the most useable power would find it way to the ground.

I think it would add another element of uncontrollability. The front being powered the same as the rear but not connected to each other, would make the front wheels spin their ass off, while the rear was getting under the load and doing the work.

The front tries to lift when you accelerate hard. This reduces traction there alot by itself. With actual tire speed not being equal, It would get out of hand pretty quick.

That's a cool looking car though.

[lincpimp]

Hey sike, I threw up a thread of my newest proposed project. If the dual out runners were connected by a center driveshaft, would that work better? I am sure that they would have to be timed together, and maybe that would not work either, or have a clutch to connect them at a certain speed.