Cheesy

Basically so they will be slightly stiffer and not fall out of the ports that I am in the process of making, only 3mm because the rotor tips are slightly burred so no longer usefull for 2mm seals.

RETed

Why would it matter if it fell out of not?

Are you going to design the corner seals too to not fall out?

The current 2-piece (2mm) Mazda OEM apex seal cannot fall out?





-Ted

rfreeman27

You keep saying your motovation is cost. Wolnt you end up spending just as much on something that might not even work?

Cheesy

The corner seals wont fall out, I'm looking at a periferal port design and am more concerned about the seals bowing out and catching on the port. As for the cost they will basically be free. I am not just going go grab a block of metal and cut out some seals I have been doing resaerch and testing in this area for a long time now. The mazda seals do work well but that doesn't mean that they are the best for all applications

guitarjunkie28

make them and i'll put them in an engine and torture test it

Apex13B

yeah, use my engine dyno



Go ahead and experiment cheese i have no problem with that, the problem is that you have no idea what you are getting yourself into, like all mech engieers that try to play with motors.

Cheesy

Its not just motors its any thing that we get our hands on

Apex13B

seriously, dont do a thesis on a motor

Cheesy

Its not really the motor just the compresion seals and chamber coatings so what I am doing is bench testing material couples with a tribometer to get friction and wear rate data and than characterising the materials using optical and electron microscopy.



On Thursday I tested a piece of a mazda apex seal on the best chamber coating that I have and found the seal wore faster than the best uncoated seal material that I have which itself does not last very long in the engine (25-40 hours @ 3000rpm 10 kw) which tends to confirm my theory that it is not a material problem but a lubrication or a seal loading problem with the engine which is out of the scope of my work.

Apex13B

ok, as long as you are just doing a "wear rate project" thats cool. Kepp us posted on further findings, formula mazda and lots of e-prod guys would love a set of seal that lasted 2-3 seasons instead of one!





PS us poor piston guys rebuild 1-2 times a season.