Plastic Engine Cooling Fan
05-17-2016, 12:04 PM
#47
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I assume this is Adam Palanuk's design that he showed at the FD campsite during Rennsport V? At that time, his design was to 5-axis mill the fan out of aluminum for more accuracy than cast, and he based the design on a scan of the turbo fan - or at least that is what I remember. He talked about tweaking the blade design for better airflow at the time. Looked like an interesting project.
Cheers,
Mike
Cheers,
Mike
05-17-2016, 12:36 PM
#48
Hey Mike, Adam Palanuk here.
Yes I did share a prototype fan at Rennsport. I cannot take full credit for the design as it has been an ongoing team effort over the last couple years. Everybody can be assured that development and testing have been taken seriously.
Steve will provide updates as the product is finalized.
Yes I did share a prototype fan at Rennsport. I cannot take full credit for the design as it has been an ongoing team effort over the last couple years. Everybody can be assured that development and testing have been taken seriously.
Steve will provide updates as the product is finalized.
I assume this is Adam Palanuk's design that he showed at the FD campsite during Rennsport V? At that time, his design was to 5-axis mill the fan out of aluminum for more accuracy than cast, and he based the design on a scan of the turbo fan - or at least that is what I remember. He talked about tweaking the blade design for better airflow at the time. Looked like an interesting project.
Cheers,
Mike
Cheers,
Mike
05-17-2016, 01:30 PM
#49
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Hey Mike, Adam Palanuk here.
Yes I did share a prototype fan at Rennsport. I cannot take full credit for the design as it has been an ongoing team effort over the last couple years. Everybody can be assured that development and testing have been taken seriously.
Steve will provide updates as the product is finalized.
Yes I did share a prototype fan at Rennsport. I cannot take full credit for the design as it has been an ongoing team effort over the last couple years. Everybody can be assured that development and testing have been taken seriously.
Steve will provide updates as the product is finalized.
05-17-2016, 02:52 PM
#50
Seared
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Rennlist Member
Hey Mike, Adam Palanuk here.
Yes I did share a prototype fan at Rennsport. I cannot take full credit for the design as it has been an ongoing team effort over the last couple years. Everybody can be assured that development and testing have been taken seriously.
Steve will provide updates as the product is finalized.
Yes I did share a prototype fan at Rennsport. I cannot take full credit for the design as it has been an ongoing team effort over the last couple years. Everybody can be assured that development and testing have been taken seriously.
Steve will provide updates as the product is finalized.
Let me know if you have any fans with blemishes.
Andreas
05-17-2016, 04:54 PM
#51
7th Gear
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We had three main design objectives before starting this project:
1) Increasing airflow over the original fan to improve hot weather performance where there is a natural power loss due to higher cylinder head temperatures. Our fan has 11 blades to meet our design criteria.
2) Use a much more durable material (instead of Mg) to eliminate blade cracking and related failures.
3) Maintain or improve Moment of Inertia to control power losses and ensure no belt issues.
1) Increasing airflow over the original fan to improve hot weather performance where there is a natural power loss due to higher cylinder head temperatures. Our fan has 11 blades to meet our design criteria.
2) Use a much more durable material (instead of Mg) to eliminate blade cracking and related failures.
3) Maintain or improve Moment of Inertia to control power losses and ensure no belt issues.
05-17-2016, 05:35 PM
#52
RL Technical Advisor
LOL,..I'm not Rothsport (although we are very close and coordinate on many projects). Testing and validation is underway and once thats completed, I'll post on my own website, on our FB Page, and here.
05-18-2016, 12:07 PM
#54
Burning Brakes
This cant come soon enough my fan isn't looking too good and is due for at the least a refinish or perhaps a full replacement...patiently waiting
05-18-2016, 04:30 PM
#56
RL Technical Advisor
Let's complicate things a bit!
Make it variable while we're at it.
Then you lose these HP only when things get hot...Attachment 1052369
Make it variable while we're at it.
Then you lose these HP only when things get hot...Attachment 1052369
I'm a NOTAR fan, myself.
05-19-2016, 01:03 AM
#57
Instructor
Thread Starter
I've got loads of questions for you, Steve. I'll wait until the right time to get answers. Seems that the best way to assert the practicality of such a project is to improve on the airflow, as well as reduce weight/distribution for moment of inertia improvements, and improve durability. That way, with re-design for better airflow, it's something to everyone.
I've been told that the older turbo fans are of a different design and they provide increased flow compared to the ones in our Carreras. Can anyone speak to this?
I've been told that the older turbo fans are of a different design and they provide increased flow compared to the ones in our Carreras. Can anyone speak to this?
05-19-2016, 03:39 AM
#58
RL Technical Advisor
I've got loads of questions for you, Steve. I'll wait until the right time to get answers. Seems that the best way to assert the practicality of such a project is to improve on the airflow, as well as reduce weight/distribution for moment of inertia improvements, and improve durability. That way, with re-design for better airflow, it's something to everyone.
I've been told that the older turbo fans are of a different design and they provide increased flow compared to the ones in our Carreras. Can anyone speak to this?
I've been told that the older turbo fans are of a different design and they provide increased flow compared to the ones in our Carreras. Can anyone speak to this?
The straight-blade fans as used on Turbo's from '76 to '97 most definitely flow more than the 3.6 (NA)'s curved blade ones which were designed to reduce drive-by noise.
Porsche knew that the turbocharged models needed reduced cylinder head temps to help prevent detonation and reduce cylinder temps for improved ring sealing.
05-19-2016, 08:29 AM
#59
Rennlist Member
Which leads to a question I've been holding (Due to myself feeling bad to add another question to the heap) as you have been bombarded already Steve.
Will there be a version for the TT?
Thanks, and best of luck!
Regards,
Al
Will there be a version for the TT?
Thanks, and best of luck!
Regards,
Al
05-19-2016, 02:04 PM
#60
RL Technical Advisor
The TT doesn't need this at the moment; it already has a good fan. We may elect to offer a forged, billet aluminum version depending on demand.