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quite possibly ^the coolest thing^ I've yet seen on the intarwebz - thanks for sharing Van

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Old 02-17-2019, 07:39 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #21 (permalink)
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quite possibly ^the coolest thing^ I've yet seen on the intarwebz - thanks for sharing Van
Anytime!


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Old 02-22-2019, 03:01 AM
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Anytime!


I so want a tour of your shop. You have the coolest Porsche collection ever!
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Old 02-22-2019, 06:39 AM
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holy crap van . thats incredible . fock CRISPR . you got the technology man . best . frank
Old 10-02-2019, 09:01 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #24 (permalink)
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So awesome
Why wouldn’t one use an electric motor to power the fan and eliminate the whole belt drive assy?
Tony
Old 10-04-2019, 05:38 AM
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Originally Posted by Bigtoe32067 View Post
So awesome
Why wouldn’t one use an electric motor to power the fan and eliminate the whole belt drive assy?
Tony
The hp to drive the fan is pretty substantial.
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Old 10-04-2019, 05:48 AM
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So awesome
Why wouldn’t one use an electric motor to power the fan and eliminate the whole belt drive assy?
Tony
No one had done this yet because it is far more difficult than you think. A buddy of mine who worked in the composites industry made a fan around 10 years ago with electric motor, I don’t think anyone has pictures of it as he was so secretive, was going to use special modern motors and blah blah he could never get it working enough cool a real engine. The fan/shroud/setup were awesome but the motor didn’t have the power. Not saying it is impossible to cool one of these motors with electric drive but I have never seen one just heard lots of talk.

The flat fan is one of those things you do when you have already done everything else, twin plug, twin turbo, slide valve or ITB, massive intercooling - then the flat fan comes in gives more even cooling so the timing can be changed to areas the 911 fan will not go. Like twin plug it is one of those major cost additions but with only small benefits on the power scale - although huge benefit on the coolness scale.

Good work on this build, looks fun.
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Old 10-04-2019, 06:18 AM
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If you had that engine; Who wouldn't want to take a spin around town Mad Max style?

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Old 10-04-2019, 09:47 AM
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Corvairs have flat fans. So it isn’t like Porsche came first on that. I’m surprised I’ve never seen the Corvair app applied to Porsches. Anyone know why?
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Old 10-04-2019, 02:48 PM
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Because the Corvair set up is fairly janky. Thrown belts were common. They weren’t high rev or high power engines either.
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Old 10-04-2019, 06:23 PM
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7.0:1 > 11.3:1
 
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Seem to recall the pulleys on the corvairs had tall fences to avoid throwing belts, but you couldn't beat the belt drive system for simplicity. Probably fine at lower rpms.
Old 10-04-2019, 08:36 PM
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Maybe if was addressed in the later models. The track models (yenko stinger?) had additional pulleys for sure.
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Old 10-04-2019, 09:17 PM
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I've seen the Corvair style fan on type 4 VW motors using a Porsche fan. I've heard about belt jumping, but no personal experience to share.

The idea of an electric fan is an interesting one, but it would actually cost more power in the end for most applications. Assuming that it would be coupled with a traditional car electric system using a battery and alternator, you'd have to convert mechanical energy to electrical (alternator) and then back to mechanical again (the electric fan). There are losses with each conversion, so one would expect an electric fan to consume more horsepower overall than a belt driven fan.
Old 10-20-2019, 08:02 AM
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Quote:
Originally Posted by Bigtoe32067 View Post
So awesome
Why wouldn’t one use an electric motor to power the fan and eliminate the whole belt drive assy?
Tony
IIRC, the fan puts out over 4000CFM. That takes somes serious power to turn.
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Old 10-22-2019, 12:33 PM
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Stumble on something new every day. It may not add a lot, and it may cost a lot, but unique for sure. It's got cool in spades.
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Old 10-23-2019, 05:33 AM
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Quote:
Originally Posted by Bigtoe32067 View Post
So awesome
Why wouldn’t one use an electric motor to power the fan and eliminate the whole belt drive assy?
Tony
Electric motor weight, size, heat & current draw (hello BIG alternator upgrade) make it bad choice.
Old 10-24-2019, 03:58 PM
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Looking at this, wow!!, it is noisy?

Old 10-29-2019, 09:02 AM
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