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On a great circle route
Join Date: Feb 2003
Location: recalculating...
Posts: 680
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Boring Fuchs, An experiment in reduced unsprung weight and rotating mass.
Since the Fuchs factory put holes in the petals of the 914 wheels-
 I thought "Why not bore some holes in those five spoke Fuchs too?" Less unsprung weight, less rotating mass, better brake cooling-  Further weight reduction is achieved by inflating the tires with hydrogen. With this performance upgrade I can reach 175 MPH with the top down. ( On the Bonnieville Salt Flats of course, don't try this at home!!!) Any possible issues with strength reduction have been addressed by backyard shot-peening. (12 guage magnum loads) Be sure to remove the tires before this step. YMMV. Let me know what you think, and have a nice DAY! 
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Russ |
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04-01-2009, 06:32 AM
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Registered
Join Date: Apr 2008
Location: Houston TX
Posts: 8,705
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I assume you included symmetric speed holes in the bonnet, right?
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Mike Bradshaw 1980 911SC sunroof coupe, silver/black Putting the sick back into sycophant! |
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04-01-2009, 06:44 AM
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Hmm,
Why not three lightening holes in each pedal with a smaller hole closer to the center of the wheel, and getting progressively larger towards the diameter. Were you serious about 175 mph? If so, I think not.
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If it flows, it goes. If its smooth, it moves. Any questions? 96 993 C2 (Current) 87 911 Factory Turbo-Look Cab (Sold) 85 911 Factory Turbo-Look Targa (Gone) |
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04-01-2009, 07:12 AM
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Get off my lawn!
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Cross drilling the rotors with 3/4 inch diameter holes will help even more. If you go all out you can go to one inch holes and get to 180 MPH!
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Glen 49 Year member of the Porsche Club of America 1985 911 Carrera; 2017 Macan 1986 El Camino with Fuel Injected 350 Crate Engine My Motto: I will never be too old to have a happy childhood! |
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04-01-2009, 07:27 AM
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It's definitely April 1st...
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Mike 1976 Euro 911 3.2 w/10.3 compression & SSIs 22/29 torsions, 22/22 adjustable sways, Carrera brakes |
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04-01-2009, 07:30 AM
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Registered
Join Date: Jul 2003
Location: Upstate N'York
Posts: 166
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Rotate the tires parallel to the ground, replace petals with large fan blades and you can make a hovercraft!!! 0 unsprung weight!!!!
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joe >82 3.0 SC >01 Audi S4 Avant |
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04-01-2009, 08:38 AM
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Diss Member
Join Date: Jul 2002
Location: SC - (Aiken in the 'other' SC)
Posts: 5,020
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Quote:
It would just end up flipping over the front bumper onto its roof... (BTW- That would massively increase the unsprung weight. When it is on the roof the whole car is unsprung except the wheels would be sprung weight...) On the later all wheel drive cars it would work better.
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- "Speed kills! How fast do you want to go?" - anon. - "If More is better then Too Much is just right!!!" - Mad Mac Durgeloh -- Wayne - 87 Carrera coupe -> The pooch. |
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04-01-2009, 09:03 AM
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Registered
Join Date: Jul 2003
Location: Upstate N'York
Posts: 166
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Plus, no rotating mass!!!
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joe >82 3.0 SC >01 Audi S4 Avant |
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04-01-2009, 09:36 AM
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In the shop at Pelican
Join Date: Aug 2002
Location: Los Angeles, CA
Posts: 10,459
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I assume you had the wheels re-balanced on a homebuilt jig too?
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04-01-2009, 10:00 AM
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abit off center
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If the front edges are beveled it will scoop air in for the brakes.
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______________________ Craig G2Performance Twinplug, head work, case savers, rockers arms, etc. |
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04-01-2009, 10:04 AM
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Registered
Join Date: Jul 2000
Location: So. Calif.
Posts: 19,910
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The windshield is a large contributor to drag. Remove it. And since it's a Targa, the windshield frame as well. Put the rear view mirror elsewhere. Don't forget the aero-bicycle helmet.
 Sherwood |
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04-01-2009, 11:53 AM
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Join Date: Mar 2009
Posts: 27
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a haircut & shave will do a lot at diminishing drag as well.
You could easily jump the 200 mph barrier!! |
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04-01-2009, 01:43 PM
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Registered
Join Date: Nov 2006
Location: Ontario, California
Posts: 1,141
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Although it's April 1st, the reality of drilling holes in the wheels will not cause better brake cooling. At Speed, the holes don't let in any air as they are rotating too fast and act just as a solid piece of metal. Unless you add an air foil to scoop up air and viola, you have that hovercraft as indicated above via joecrum's post.
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___________________________________________ 2001 Boxster S, Orient Red Current Vehicle, 1973.5 911 full factory "S" trim with a 3.2 engine **Sold**,2002 996 **Sold**,1975 911S **Sold**, 1971 911T **Sold**, 1968 912 **Sold** |
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04-01-2009, 01:53 PM
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AutoBahned
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you need to talk to the Porsche R&D people about the 993 wheels
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04-01-2009, 03:12 PM
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1987 Porsche 911 3.2
Carrera
1976 Porsche 911
1969 and 1986 Porsche Targa and Coupe 1720cc and 3
