Mulling This Over In My Head... 26b

[Grant Monkhouse]

Forging is far superior in strength than machining. People have got so blinded by the words billet and cnc that they don\'t know the benefits of old tech. Lol.

Forging keeps the grain structure of what the object is forged into. Whereas cnc is cutting through the grain structure. A simple explanation but others that understand know what I\'m talking about.

For example a rolled thread on a bolt is far stronger than a cut thread on a bolt

[Grant Monkhouse]

That guy knows what he is doing and I\'m sure his bearing seats will be just fine

[- Fezcat -]

so realistically then forge casting and machining the shaft is going to be faaar superior in strenght, structure etc..
 
Shaun I totally see what you\'re on about with the hardening on the lobe surfaces, im sure that there must be more work to be done on that shaft...

[shaunwil]

That guy knows what he is doing and I\'m sure his bearing seats will be just fine

I hope so, looks an awesome build. Thinking about it he did mention grinding in the soft stage so he may have sorted that problem out before heat treatment.

Always sticks in my mind we used to machine Flanges and if the bearing wasn\'t ground oil would spurt out in reverse regardless the turned finish.

Shaun

[shaunwil]

so realistically then forge casting and machining the shaft is going to be faaar superior in strenght, structure etc..
 
Shaun I totally see what you\'re on about with the hardening on the lobe surfaces, im sure that there must be more work to be done on that shaft...

I hope so. It was always the thing I couldn\'t get my head round. On a shaft you reuse the centres for all the operations, rough cut, finish cut, then final grinding and honing / superfinishing. Keeps things consistent. The Boring takes the centres out of the picture.

Did think about induction hardening all the bearing surfaces to only harden the bearing surfaces with a case hardening and then bore the hole at then end, but it depends if the bore needs to be hardened too.

Shaun

[shaunwil]

Not sure what business he is in so he may have something like this :



Shaun

[dthebuk]

What about running two exhausts? then you can run slightly smaller Diameter pipes and quite a few more silencers.

I was under the impression that proper silencers shouldn\'t restrict flow?

Though now you\'ll have the problem of where to put them.

Also you could get those dolphin tips that just point downwards, I heard they help quite a bit

[Speedworks]

easiest way would be to couple two 13b blocks:

Correct me if I\'m wrong but that clip shows 2 13B\'s mated together by a 20B thick center plate iron.
Which, in theorie, makes perfect sense. You would just need 2 13B exc. shafts with machined matching ends...

[- Fezcat -]

firing order wouldnt be right iirc, firing order for the 26b (to make that sound ) is 1/3/2/4
 
lobe phases as follows
 
L1 0° (TDC)
L3 90°
L2 180°
L4 270°
 
In my head, coupling two together cant match this? or can it?

[shaunwil]

Not too sure, you could offset the cranks by 90deg to get those angles. Would fire 1,3,2,4 possibly ??

Shaun

[shaunwil]

Could you set a 2nd crank angle sensor at 90deg and run it on 2 PFC\'s

Shaun

[- Fezcat -]

Interesting idea dude, but i really dont like bodge - If I do something, it would be done properly!

[shaunwil]

Stick it on a LinkECU G4 Extreme, supposed to be good for a 4 Rotor !

Shaun

[shaunwil]

Thinking about it the Quad 12a of Re-A was done with 2 PFCs if I can remember rightly !

Shaun

[- Fezcat -]

you\'re a mod - please can we be allowed to edit our posts?! lol