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Old 04-01-2016, 02:39 PM   #10 (permalink)
gumby79
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Join Date: Dec 2014
Location: Butte, Montana
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little jona - '91 Dodge D 250 first gen cummins LE
Team Streamliner
90 day: 23.4 mpg (US)

Little Jona airo modded - '91 Dodge RAM 3/4 TON D 250 2×4 AUTO
Pickups
Team Cummins
90 day: 18.5 mpg (US)

The Salted Hound Jenny. - '87 Dodge Ram 50/D-50 5sp 4X4
90 day: 20.24 mpg (US)

Jona Allison aero - '91 Dodge Ram D-250 Le
90 day: 20.76 mpg (US)
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Plausible

Quote:
Originally Posted by Xist View Post
I think someone mentioned this idea recently and the answer is that turbos spin far faster than alternators, so much so that it would not work.
Not true any more.
Brushless DC Motors, Servo Motors, DC Motors, Permenant Magnet AC Motors, AC Servo Motors, Permanent Magnet Synchronous Motors, High Speed Motors, Custom Motors, Gearheads, Encoders, Motion Control, Slotless Motors, Sensorless, Ironless Motors, Vacuu
has this

http://www.koford.com/Generators.pdf[/COLOR]
This is rated up to 400,000 rpm

If you use a waste gate housing you can regulat the shaft Speed. Or even better a VGT (Verible Geometry Turbine )

"Oil pan 4 Those step down gear boxes are expensive and the ones I know of are only approved for 40,000 to 50,000 RPM. Most are only used for around half of that.

This system would be so expensive there wouldn't be any point."

With the gen set parts in the link, the need for a gear box removed ,is this posable?
As for expensive all R&D is. The key is to use off the shelf parts.

My thoughts add 2nd turbocharger ,my rig already has1. Maby a vgt turbo link . Replace the impeller (as it is the thrust bearing pre load) with a spacer and direct cupple the BLDC400, 000 rpm motor/gen to the shaft.
The reason for wanting this not to be in my Intake sys., is simple. Any failure bits and pices would go through the engine, resulting in $1000s of damage. Develop and prove the sys. before putting it on the primary turbo. Also on the primary it would increase lag. And the rule of 1/3. You can recover 1/3 of the waste energy per stage. Eg 160hp into the turbo 120hp bown the pipe and 40hp at the shaft
Gumby stay flexible.
__________________
1st gen cummins 91.5 dodge d250 ,HX35W/12/6 QSV
ehxsost manafulld wrap, Aero Tonto
best tank: distance 649gps mi 24.04 mpg 27.011usg
Best mpg : 31.32mpg 100mi 3.193 USG 5/2/20


Former
'83 GMC S-15 Jimmy 2door 2wd O/D auto 3.73R&P
'79 Chevy K20 4X4 350ci 400hp msd custom th400 /np205. 7.5-new 14mpg modded befor modding was a thing
87' Hyundai Excel
83 ranger w/87 2.9 L FI2wd auto 18mpg on the floor
04 Mitsubishi Gallant 2.4L auto 26mpg
06 Subaru Forrester XT(WRX PACKAGE) MT AWD Turbocharged 18 plying dirty best of 26mpg@70mph
95Chevy Blazer 4x4 auto 14-18mpg
04 Chevy Blazer 4x4 auto 16-22mpg


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