Lightened flywheels?

[schnitzer teil-jäger]

who has the best pricing and weights of finished product?
w

[Jordan]

I am bringing my stock single mass flywheel to the machine shop tomorrow. I am going to show them how I want it lathed down. I will be sure to make before and after specs and pics.

[schnitzer teil-jäger]

what is your target weight? I am looking for about 12 pounds, tep says thiers is 16. Mine will be for track only or to track and track only.
w

[Jordan]

what is your target weight? I am looking for about 12 pounds, tep says thiers is 16. Mine will be for track only or to track and track only.
w

I want to loose as much as is possible.... I dont have a specific weight in mind. I will instruct them how much to take off and where.. as we shall see how it adds up.

[Jordan]

After doing some calutations, and using my 3D modeling programs internal mass, and weight program....

From my 3D model it should be 21lbs.

After the material was removed on the 3D model, it then was 18lbs.

12 isnt possible IMO on a stock flywheel... it just isnt happenin.

here is a cross section, red shows material i am having removed.

[MattM20]

some one on E3S got down to 13lbs on the stock flywheel.

also, will having a lighter flywheel make more clatter, or is that a matter of balance?

[schnitzer teil-jäger]

jordan think outside the box.

http://www.todaracing.com/images/product_toyota_flywheel.jpg

http://store3.yimg.com/I/ntnsracing_1753_61177766

http://www.intakeone.com/images/Flywheels/index_EXEDYflywheelBIG.gif

http://www.clutchcityonline.com/pictures/act-fw.jpg

w

[Jordan]

Thats all fine and dandy, but none of those are stock m20 single mass flywheels.

If those are engerneered that way, fine sure... works great... but doing that kind of material removal on a m20 flywheel, and expecting it to hold up.... just isnt going to happen. the costs involved in even doing something like that to a m20 flywheel far surpass that of buying a damn aluminum one.

[Jordan]

Alright bro, I just invested about an hour into this, so at least give me props eh?

Here I superlightened a stock flywheel in my modeling program.




All that material removed, holy shit eh? Thats amazing... guess how much it weighs?

11.51lbs ( from 21.28 )

Honestly man, as I said before, good god damn luck shooting for 12lbs out of the stock flywheel.

[SlammedE30]

My stock flywheel weighs 11.5 lbs. It has been cut on a lathe and machined in a CNC Mill. Stock weight it was 19 lbs, the machine shop's calculations said they took 40% of the weight out of it. It spins up fast (not to mention my Pauter rods and forged pistons :twisted: ) See what they can do (if they have a CNC mill).
-Ted

EDIT: My flywheels has no where near the amount of weight cut out of it compared to your superlightened model Jordan.

[Jordan]

Do you have any pictures of it Ted???

Seriously.. I want to know whats up here, because its just not adding up well with me.

[SlammedE30]

I don't have pictures of the flywheel itself, but I could see if the machine shop would let me take pictures of the plans for it. And next time the tranny is out of the car and the flywheel off, I'll definetly get pics. (you aren't the first person this has surprised)
-Ted

[E30godz]

I'm curious as to why you haven't actually weighed the flywheel to see the difference between the program and real life. Im sure there are some descrepencies.

[gstuning]

There is a stock M20 flywheel that weighes 6kg or 13lbs, it´s from a old model E21 320 or a old M20 E12/E28

I was going to put such a wheel on my S50B30 as I spoke to a guy who had one on his S50B30, it needed slight milling to fit, otherwise it was great, It´s alot better then my stock 25lbs flywheel

[Jordan]

I'm curious as to why you haven't actually weighed the flywheel to see the difference between the program and real life. Im sure there are some descrepencies.

this is a $5000 industrial parts modeling program. It calculates overall mass by volume, and known mass per volume. It has many many many materials you can select from. Its correct. Ive created many parts before in it, that matched the mass of its real counterpart.