Open Source Electric Supercharger

[jamesm]

Originally Posted by SloS14

power porn: http://imgur.com/a/nzq04

That's a beast! I have a few of their esc's, some are great others not so much. I wasn't aware they made a 300a model. That's crazy. What's it for?

[SloS14]

Originally Posted by jamesm

That's a beast! I have a few of their esc's, some are great others not so much. I wasn't aware they made a 300a model. That's crazy. What's it for?

What else would you use them for? A manned multi-rotor of course...with 60lbs of Lipos
http://www.reddit.com/r/radiocontrol...atboy_v2_300a/

[jamesm]

That is bat shit crazy, and I love it. 18kW motor? That's what, like 24hp? And there's 6 of them?!?! I'm inspired lol.

[Frs300]

@jamesm 11hp brushless motor? lol about the size i have for a rc boat a 4082 and a 5682. twin screw and two esc that can handle over 200amps each or 2 5000watt motors lol

when did turnigy aka re branded hobbyking start selling a 300amp esc. i have fried to many turnigy esc

[jamesm]

Originally Posted by Frs300

@jamesm 11hp brushless motor? lol about the size i have for a rc boat a 4082 and a 5682. twin screw and two esc that can handle over 200amps each or 2 5000watt motors lol

when did turnigy aka re branded hobbyking start selling a 300amp esc. i have fried to many turnigy esc

You gotta be careful which of the turnigy ones you buy, most are crap. They do make a few gems though. Their CC clones are nice and reliable in my experience.

[Toma]

Originally Posted by neutron256

You can find all kinds of MAP sensors on eBay for as little as $10. The other option is to just tap into the existing MAP sensor.

Digikey. There are multitudes of various styles under 10. Megasquirt uses a freescale semiconductor one as I recall.

[Frs300]

Originally Posted by jamesm

You gotta be careful which of the turnigy ones you buy, most are crap. They do make a few gems though. Their CC clones are nice and reliable in my experience.

ive only used the marine stuff which is always rebranded hobbyking. stick to fightercat but they are expensive

[200hp/tonne]

Originally Posted by Toma

Digikey. There are multitudes of various styles under 10. Megasquirt uses a freescale semiconductor one as I recall.

MS uses Freescale MPX4250AP, 14$ from Digikey.

On a side note, if you are shooting for low boost levels, 3 psi of boost at 7500 rpm only needs 5 hp compressor work at 70% comp. efficiency. So if you upgrade to a 320 amp alternator, you maybe don't need a capacitor bank...

Combustion engg here, my EE knowledge is sketchy at best.

[neutron256]

Originally Posted by 200hp/tonne

MS uses Freescale MPX4250AP, 14$ from Digikey.

On a side note, if you are shooting for low boost levels, 3 psi of boost at 7500 rpm only needs 5 hp compressor work at 70% comp. efficiency. So if you upgrade to a 320 amp alternator, you maybe don't need a capacitor bank...

Combustion engg here, my EE knowledge is sketchy at best.

Are you talking about driving the system directly off the alternator? Isn't that sort of missing the point? The idea, at least to me is to act more like a hybrid slowly charging the battery during normal driving and then draining the battery for a quick burst of power.

[neutron256]

Originally Posted by jamesm

You gotta be careful which of the turnigy ones you buy, most are crap. They do make a few gems though. Their CC clones are nice and reliable in my experience.

I'm curious what sources for motors everyone has found. Like many of us I've been looking at motors on HobbyKing.com, but haven't found much else.

I'm also curious if anyone else is activly working on the hardware at this point.

[SloS14]

I'm intrigued with the idea of running a bigger alternator in conjunction with a battery bank.

[Toma]

Originally Posted by 200hp/tonne

MS uses Freescale MPX4250AP, 14$ from Digikey.

On a side note, if you are shooting for low boost levels, 3 psi of boost at 7500 rpm only needs 5 hp compressor work at 70% comp. efficiency. So if you upgrade to a 320 amp alternator, you maybe don't need a capacitor bank...

Combustion engg here, my EE knowledge is sketchy at best.

At what mass flow? But it's probably close for 25# per minute.

An old friend of mine measured drive power required for a Vortech supercharger at about 500hp, and like 10 or 12 psi. It was something 40 hp! It's a very steep curve as you start to move some air.

[ML]

Originally Posted by neutron256

I'm curious what sources for motors everyone has found. Like many of us I've been looking at motors on HobbyKing.com, but haven't found much else.

I'm also curious if anyone else is activly working on the hardware at this point.

What about the turbo? what size? find one on CL and disassemble?

[neutron256]

Originally Posted by ML

What about the turbo? what size? find one on CL and disassemble?

Nope you can get brand new just the compressor wheel and housing on ebay or Kinugawaturbo.com http://shopping.kinugawaturbo.com/. They run about $150-$200 for what we want. I've got a TD06 Housing with 20G Wheel on order right now. After doing further research I think a 25G is going to be better suited and I might try and change my order.

Edit: Link added to OP