Transmission Goes Back Into Humpty Dumpty - Almost!

Robert Linton · 07-09-2005, 09:17 AM

With the help of various people from Germany and America, the transmission started to go back into Humpty Dumpty:

1. Tiptronic® Transmission – Blueprinted, Polished, Reinforced And Dynamometer Tested Race Version

2. High Performance Software For Tiptronic® Transmission Including:

a. Specially Programmed For Use With 3.8 Liter Engine

b. Permits Driver To Hold Transmission In Gear In "Tip" Mode – Transmission Will Not Override Driver

c. Higher Performance In Automatic Mode

d. Transmission "Learning" More Rapid In Automatic Mode

3. Torque Sensing Differential Mounted To Ring Gear With Specifically Made Stainless Steel Bolts

4. Carbon Fiber/Titanium Side Transmission/Differential Housing

5. Wire Electro-Discharge Machined 300M Transmission Output Flanges

6. Lightweight Flywheel

7. Titanium Transmission Linkage Brackets

8. Aluminum High Efficiency, Lightweight Transmission Oil Cooler

9. Goodridge G-Line XF –8 Hoses With Machined Aluminum AN Fittings From Transmission To Transmission Oil Cooler

10. –8 Aluminum Quick Disconnects Between Transmission And Transmission Oil Cooler

11. Titanium Transmission Fluid Fill Plug

12. Carbon Fiber Transmission Fluid Pan Including:

a. Titanium Banjo Level Indicator Fitting

b. Titanium Drain Plug

c. Aluminum Fasteners

13. Titanium Transmission Fasteners Throughout

14. Titanium Transmission Mounting Fasteners

15. Titanium Differential Fluid Fill Plug

16. Magnetized Aluminum Differential Fluid Drain Plug

But as this was being done, the assembled group had three more "simple ideas" -- which, together, will save over a 500 grams of weight:

1. Replace the black steel mounting arms with titanium equivalents.

2. Modify the carrier so as to reduce weight.

3. Remake the mounting bracket to reduce its size and the size of the Delrin® mount.

So, a few more weeks! And, yes, after the car is complete, one might look at remaking the entire case in magnesium (given the liquid cooling channels and other design features of the Tiptronic,® an entire carbon fiber casing would not be practical) and/or redesigning certain components such as the torque converter!!

warmfuzzies · 07-09-2005, 10:01 AM

Nice job as usual Robert, one question though, the taper roller in the last pic looks worn, is this just a trick of the light?

kevin

garrett376 · 07-09-2005, 11:02 AM

I'd be pretty nervous if I was one of those guys balancing that "fortune" on the jack!!!!

Thanks again for sharing these pictures - what a beautiful creation!

Robert Linton · 07-09-2005, 11:06 AM

Yes, it has about 350 miles on it.

jimq · 07-09-2005, 11:08 AM

Any chance the reprograming would be possible in the future for us TIP drivers? Something I am sure a lot of us would be interested in buying

Robert Linton · 07-09-2005, 11:13 AM

It is, of course, technically possible but I would not let anyone but an expert do it. And, as for each action there is a reaction, changing the programming can have a variety of effects on the wear characteristics of the entire drivetrain (e.g., the internals of Humpty Dumpty's unit are quite different from the standard -- for this reason and due to its increased torque), on safety, etc.

cobalt · 07-13-2005, 04:07 PM

You might actually use Magnesium on this beauty? Didn't think you were a big fan of the material.

About time Magnesium gets some credit for being of value when it comes to weight savings.

ltc · 07-13-2005, 04:40 PM

Quote:

Originally Posted by Robert Linton

16. Magnetized Aluminum Differential Fluid Drain Plug

Exactly how does one go about magnetizing aluminum?

Heirsh · 07-13-2005, 04:52 PM

you bore/drill a hole in the plug and glue the cylindrical magnet in it. (in answer to previous question) I noticed this in the drain plugs in my car and I was ecstatic. Used to do this to all my old cars, though I never kept them long enough for it to matter.

I have a question. Why stainless steel bolts instead of high grade titanium. Similar alloys for expansion reasons perhaps? High strength Ti alloys are comparable to HS SS's and are more corrosion resistant at normal temperatures. I don't recall the fatigue data, but I think the good Ti alloys are superior to SS in that regard. Just curious since cost doesnt seem to be an issue with this project.

07-09-2005, 10:01 AM	#2
warmfuzzies Addict Rennlist Member Join Date: Jun 2002 Location: colchester UK Posts: 2,257	Nice job as usual Robert, one question though, the taper roller in the last pic looks worn, is this just a trick of the light? kevin __________________ http://www.encantada-vacation.com/ Our holiday home from home.

07-09-2005, 11:08 AM	#5
jimq Burgled Rennlist Member Join Date: Aug 2003 Location: Altamonte Springs, Fl/Gwynns Island, Va. Posts: 17,066	Any chance the reprograming would be possible in the future for us TIP drivers? Something I am sure a lot of us would be interested in buying __________________ jim *Conservatives....We work hard so you don't have to* "Apparently, I'm supposed to be more angry about what Mitt Romney does with his money than what Barack Obama does with mine." 91 White C2 Cab tiptronic 03 Black 996TT X-50 Grocery getter 2002 Dodge Ram 5.9L Gas Hog Bend-Pak Scissor Lift 64 230SL Mercedes (SOLD after 18 years ) Some other Porsche's

07-13-2005, 04:07 PM	#7
cobalt Addict Rennlist Member Join Date: Oct 2003 Location: New Jersey Posts: 10,215	You might actually use Magnesium on this beauty? Didn't think you were a big fan of the material. About time Magnesium gets some credit for being of value when it comes to weight savings. __________________ Anthony '04 Cayenne Turbo Jarama Beige/Black '94 Turbo 3.6, Cobalt Blue/Black(430Hp) '93 928 GTS 5 speed Amazon Green/Cashmere '93 964 C2 Amazon Green/Cashmere Many upgrades Past worth mentioning '89 944S2 black w/ red stripe As seen in issue 158 Excellence magazine '74 914 2.0L Marathon Blue/Black '79 SC Euro Blk/Blk (74 RS replica) (270HP 2390 lbs) 79 SC Copper/Tan '80 928 Euro 5 spd White/Black white pasha

07-13-2005, 04:52 PM	#9
Heirsh Addict Rennlist Member Join Date: Mar 2005 Posts: 909	you bore/drill a hole in the plug and glue the cylindrical magnet in it. (in answer to previous question) I noticed this in the drain plugs in my car and I was ecstatic. Used to do this to all my old cars, though I never kept them long enough for it to matter. I have a question. Why stainless steel bolts instead of high grade titanium. Similar alloys for expansion reasons perhaps? High strength Ti alloys are comparable to HS SS's and are more corrosion resistant at normal temperatures. I don't recall the fatigue data, but I think the good Ti alloys are superior to SS in that regard. Just curious since cost doesnt seem to be an issue with this project. __________________ 1990 C2 White

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

07-09-2005, 11:02 AM	#3
garrett376 C4 Specialist Rennlist Member Join Date: Oct 2003 Posts: 4,416	I'd be pretty nervous if I was one of those guys balancing that "fortune" on the jack!!!! Thanks again for sharing these pictures - what a beautiful creation!

07-09-2005, 11:06 AM	#4
Robert Linton Addict Rennlist Member Join Date: Mar 2002 Posts: 1,821	Yes, it has about 350 miles on it.

07-09-2005, 11:13 AM	#6
Robert Linton Addict Rennlist Member Join Date: Mar 2002 Posts: 1,821	It is, of course, technically possible but I would not let anyone but an expert do it. And, as for each action there is a reaction, changing the programming can have a variety of effects on the wear characteristics of the entire drivetrain (e.g., the internals of Humpty Dumpty's unit are quite different from the standard -- for this reason and due to its increased torque), on safety, etc.