High rpm alternator

[Blaster11]

I am looking for a company possibly NASCAR related which can build or balance a alternator for high RPM (10,000) use. I have a alternator which is 28 volts and puts out in excess of 200 amps which have exhibited problems (fire) when run for extended periods of time at high RPM. If you guys know anyone please help.

Thanks,

Bruce B.

[ProStreet R/T]

I'm not sure anyone does such things, most just slow the alternator down via pulley changes.

[Blaster11]

We've actually increased the speed of the alternator to to get the current up at lower (idle) RPM. I need max current at low rpm.

Bruce

[Matt@RFR]

That's the first time I've ever heard of anyone with an engine that spins 10,000 RPM and was concerned with anything working at "idle".

You're going to have to give up some details on this one. Details like:

Why 28 volts?? and Why 200 amps??

[speedster]

Bruce -

What use do you have that requires such high amps at idle yet needs to turn 10K? You can put an external field controller that essentially no loads the alternator that you can switch if you know when you are going to rev it up.

If that doesn't help you out, I will try and get a hold of our turbine guy. We have put some crusher alternators on the starboard engines on those that put out ungodly amperage at 24 Volts. Is 24V enough for you ? What are your size restrictions? These are BIG units.

The one crucial part I don't know is the reduction to the alternator since the T55's 100% N1 is about 17,000 rpm. We have buzzed them to 21,000.

[Blaster11]

Sorry I guess I didn't provide quite enough information. This is a work project, late model Chevrolet with a 6.0l engine which is loaded with electronic gear. Electronics must be able to be powered while vehicle is at idle, what we have done for a short term solution is take a commercial alternator and overdriven it(2:1) that how I am seeing 10,000 RPM (at alternator). Why am I overdriving you ask because alternators won't make maximum power off idle. So when you take commercial items and take them way out of spec sometimes to get fire and brimstone. I would like to start by having my current alternators balanced and fully checked out and then maybe a custom one built. So if anyone knows anyone that has this capability please let me know. Specs- 28v 250A minimum

Thanks,

Bruce

[esc1]

I would contact Powermaster and tell them your requirements

[speedster]

People that run the super huge competition audio systems run multiple alternators. You may want to find their websites. I would be very surprised if they don't have solutions.

[speedster]

Bruce -
Check this out. They discuss high amps and multi alternators.

http://www.zena.net/htdocs/alternators/AutoSound.shtml

[rocketman]

check out msd

[Blaster11]

Thanks guys I will start calling on Monday but if you have any moe ideas please keep them coming.

Bruce

[ProStreet R/T]

T55's 100% N1 is about 17,000 rpm. We have buzzed them to 21,000.

T55 you say... ya know, if you guys happen to have an extra or two, I can probably dig up a nice offshore boat that could use some new power :naughty:

Couple BMP surface drives and 200mph here we come :D

[GetMore]

http://www.electrodyne.com/about.html
http://www.eco-techalternators.com/alternators_14.htm

FWIW, for higher output at idle you need a larger alternator. It's almost a physical law.

[Blaster11]

I just got done buying a couple of electrodyne 400A alternators but they are HUGE. How huge you ask, large enough to have its own lifting lug!!:eek: Major mods will be necessary to install.

Thanks again,

Bruce

[GetMore]

They may be huge, but they'll put out enough power at idle to drive one of those hybrids!

[speedster]

T55 you say... ya know, if you guys happen to have an extra or two, I can probably dig up a nice offshore boat that could use some new power :naughty:

Couple BMP surface drives and 200mph here we come :D

Guess you have done this at sometime. We use BMPs and 200+ mph has been hit dozens of times with that combo. Fuel economy doesn't quite meet CAFE standards though. 125 gal/hr at ground idle.:hammer:

[ProStreet R/T]

Really? Not too many 200+ offshore boats that I've heard of so far. I believe skater and possibly MTI have them but those weren't turbine.

Got any pics or links? 200 on water is absolutely NUTS :rolleyes:

Yeah i've played with a couple turbine boats. Mostly T53 stuff though one guy has a nice super short (like 4ft overall length) 55 he's trying to fit in a nortech.

hehe you guys think cars are expensive, offshore boats will make the mule look down right economical.

[speedster]

Hey ProStreet. The white boat is the old one. The green one is the new one. Both go well over 200. (Well the white one is no more, it delaminated in Key West over a year ago.)

[ProStreet R/T]

:eek: NICE! :woot:

Do you work for a marine turbine conversion company or something?


need any engineers? :fingersx:

[speedster]

Nah, it's just for the adrenaline rush.:seizure:

[speedster]

I just got done buying a couple of electrodyne 400A alternators but they are HUGE. How huge you ask, large enough to have its own lifting lug!!:eek: Major mods will be necessary to install.

Thanks again,
Bruce

A pair of 400A alternators is like adding another engine! Hope you got what you want.

[silver69camaro]

This doesn't make sense to me. That kind of power draw from the alternator will stall a motor if it's idling. You'd need several batteries to take some of the load off of the alternator.

[Blaster11]

I am not putting all the alternators on one vehicle, they are going on several vehicles. The motor doesn't even hiccup now when I am drawing 200 amps and yes I am running a battery bank also. Have not had the time this week to call all of the people you guys have reccomended but thanks for the help.

Bruce