Ive heard of crystal(sapphire maybe) viewing ports in the head of test engines, but never a full head or cylinder

 

Today I made a decision... and ordered some material...





typical me...

 

This is amazing.

 

Got an big piece yesterday...

 

Today the E-shaft was left to it first grinding-session. Feels strange

I should add that I am not entirely alone in this with billet rotors.

My friend Gustav and I often get yelled at for talking more with each other, then our partner's when we are sitting with headsets and drawing SolidWorks at night

We have our visions. I want my 4rotor, and Gustav wants his "tired" 770hk 13B will go a bit better

 

are u and john sharing info on ur builds? what are the differences in the motors?

 

Now lately we talk little about our builds. But no one of us had copied the other.

We have both drawned and design our own E-shaft.

I think John is a little more "builder" than me, he uses no CNC-machines

 

Nope I don't, I wish I could, but I don't have acces to them.

I'm also not taking things as far as you have, I'm just fabricating the most basic parts needed to run a 4-rotor, so no billet rotors or anything.



Nice pieces of round material, is that the same type of material that you used for the e-shaft?

I still think you should've gone with aluminium though, yeah the seal grooves will wear more quickly but engine response will be insane.

Maybe a DLC coating (www.kexel.de) or a TiN coating.

 

But with awsome response, the driving trough town will be harder

At first we try iron-rotors with less then 4000grams. Then we go futher.

 

Added the primary-port. If you don't want to PP...