ALU. Rotor. SHHHH!TOP SECRET.

[Bob Monkhouse]

Just thought everyone would like to see what I\'ve knocked up with a file and a hammer and chisel in the garden shed.(Its supposed to be a secret so don\'t tell anyone).

[Brett]

Amazing what you can acheive with a coarse b@stard file :Giggle

[monkey-fd3s]

Looks amazing....

Only thing... Isn\'t the melting point of aluminium about 660.32 °C

I\'m not sure what the combustion temperature is inside a rotary engine but would it possibly be higher that 660°C at high/prolonged RPM.

[BlitzBoy]

So have you made your own Bob?

http://www.eastcoastparts.com/html/billet_rotor.html

This are the people who make them in the US, they have been tested on a 8 second drag car as well. Rotaryarts over here are UK dealers over here

[najiru]

Looks nice.
 
I\'d be interested in the long term durability of these parts. Engine temps for long exposure times could significantly reduce properties over time in alu. Would look up the curves but they gave only the temper and not the actual alloy?? Would want to see some calcs to reassure me they know what they\'re doing

[trotter]

Looks amazing....

Only thing... Isn\'t the melting point of aluminium about 660.32 °C

I\'m not sure what the combustion temperature is inside a rotary engine but would it possibly be higher that 660°C at high/prolonged RPM.

Can you see the irony in that statement? :rollin :rollin

[Timmy]

well it wouldn\'t 660.32c if you weren\'t at sea level.

I think the intake cools it down quick to not allow it to melt. Combustion temps are probably near 1000c.

[Bob Monkhouse]

Oh dear, you are all missing the point here. Aluminium/silicon alloy has been and will forever continue to be used in internal combustion engines, the things called pistons haven\'t been made of iron since the first world war.Aluminium cylinder heads are now de rigeur on most engines particularly on performance engines where the extra heat dissipation allows the tuner to use higher compression ratios- high cr.s=high power-without the engine knocking itsself to death.Titanium inserts for the apex seals will ensure seal/rotor longevity. Oh,and the melting temp of al/silicon alloy is approx. 800c.

[Bob Monkhouse]

Ps these definately are not Eastcoast rotors.

[m1tch]

Those aren\'t the eastcoast rotors, although they have dyno run them and got some stupidly high figures off them lol should be able to rev the engine to 15k+ lol

P.S. Can I have two

[turbo boy]

Very impressive. When is someone gonna build some titanium rotors.

[m1tch]

Or carbon fibre ones lol they would weigh nothing lol

[Bob Monkhouse]

Hahahahahaha! Have you any idea how much titanium is? I have 8 titanium screws in my head(no I\'m not joking for once) and they were £150 EACH!!It serves no purpose to make them from titanium anyway, aluminium with titanium inserts is more than adequate.

[Bob Monkhouse]

Ps. apparently carbon fibre pistons are being developed and no doubt are being used in F1 as we speak. How light do you think something has to be to rev to 19000!! They also have a really short stroke also. Balsa wood might be the future, they just have to figure out how to stop it burning(oh dear, I\'m getting silly again, time for my medication).

[m1tch]

Honda have created \'rotary valves\' on piston engines, which rotate at the top of the cylnder meaning that a race engine can rev to 25k lol *sigh* lol