Rotary Car Club - Tegheim - Home made 4 rotor Wolvo 142

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- - Tegheim - Home made 4 rotor Wolvo 142 (https://rotarycarclub.com/showthread.php?t=13475)

You mean that the combusion is not the same all over?

It refers to the shape of the combustion chamber.

LDR = Leading deep recess Good performance high emissions.
MDR = Middle deep recess Compromise to get down emissions.

Quote:

Originally Posted by Pettersen (Post 202677)

It refers to the shape of the combustion chamber.

LDR = Leading deep recess Good performance high emissions.
MDR = Middle deep recess Compromise to get down emissions.

Well, I have seen too much data on this stuff so I forget most, but looking at "Recent Technology Development of High-powered Rotary Engine in Mazda", its clear that MDR design produces highest BMEP from all tested variants, especially in the top-end. Note: this is with both spark plugs. Second best was "leading flat" recess and LDR design was third as far as power goes.

With leading only ignition, leading flat was best and LDR/MDR were about the same at the top-end, LDR slightly better in midrange, but both considerably worse than leading flat variant. But the point is moot since the most people do use both spark plugs.

IIRC R26B and 13G also has MDR rotor pockets. Maybe this desing has bad name due to Renesis rotors, but their problem probably lies much more in inferior gas sealing - low dynamic compression.

Finished the lower brackets for the Coilovers.
http://i815.photobucket.com/albums/z...2/IMAG1523.jpg
http://i815.photobucket.com/albums/z...2/IMAG1522.jpg

Have changed my Cad a little. Moved the bracket 50mm to the center of the car, to gain 61.5° angle on the coil at rideheight, and 66.0° angle at full bump.

This is what it looked lite before the change.
http://i815.photobucket.com/albums/z...oilover-01.png

http://i815.photobucket.com/albums/z...oilover-01.png

Today I got the spindle-surface straightend.
To be sure that the caliper and disc are in level.
And also, to get a fine surface to attach to.

http://i815.photobucket.com/albums/z...2/IMAG1526.jpg
http://i815.photobucket.com/albums/z...2/IMAG1528.jpg

Amazing work. Really!

Amazing, I have worked with CNC in the past, but this is well over my head... Excellent build thus far! Cant wait to see it finished!!

Reminds me of designing and building fabricated uprights (and all other parts!) for our Formula SAE cars back and the University I worked at ......... so so so many hours of work and I can relate to what you are doing!@

Keep it up.

This is mind blowing! Hurry and get this done so I can buy one from you to put in my Opel GT!

This is quite the excellent build, sir!

I want to make sweet, sweet love with this build.

I may have to pick your brain in a few years about some of your engine stuff. Consider yourself warned.

I still wish I had half of the skill to do this.