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I love being blown but going a different method over winter!
Antnicuk - 24/10/09 at 07:15 PM

I currently have a to4e fitted but always wanted to try supercharging a rotary so i'm going to give it a go over winter.

Not really sure what to expect but i will report back.

This is coming off



and this little beast is going on!



CraigJ - 24/10/09 at 07:25 PM

Or why not use both?????

speedyxjs - 24/10/09 at 07:57 PM

quote:
Originally posted by CraigJ
Or why not use both?????


Yeah, i would. Just look at the hypercharged rally cars of the 80's. 700+hp from a 1.8

Antnicuk - 24/10/09 at 08:15 PM

there isnt that much room in my little engine bay, also, its not about more power, ultimately i wont get more power but hopefully it will be a different power, but its more about having a play and the supercharger is borrowed from a friend

Xtreme Kermit - 24/10/09 at 08:27 PM

Won't it leave a bit of a gap if he asks for it back...

BenB - 24/10/09 at 09:15 PM

Nice

Centrifugal blowers are quite nice. Bit of a compromise between the roots type (X% extra through the rpm range) and the turbo (ie big wallop of boost at possibly high RPM).

snapper - 25/10/09 at 07:19 AM

I have always thought that a supercharger would deliver torque in a smoother more manegable way in a light car, look forward to your conclutions.

Ivan - 25/10/09 at 07:34 AM

Please keep us updated on your findings - is it really that much better than a turbo on the track or does it just require a different driving style without really affecting lap times? I would love to know!!

Ben_Copeland - 25/10/09 at 07:40 AM

The problem with Turbos is they tend to "kick" in at the wrong point on a corner. So if you have a big turbo and light car you tend to spin the rear wheels in the middle of a corner. Not good.

SuperChargers give a more gradual boost all through the rev range. So theres a lot less kick because its already working!

indykid - 25/10/09 at 09:36 AM

if you have good management on a turbo, there's no reason it can't be as smooth and progressive as a supercharger

the kick is purely down to setup
tom

Antnicuk - 25/10/09 at 11:02 AM

quote:
Originally posted by indykid
if you have good management on a turbo, there's no reason it can't be as smooth and progressive as a supercharger

the kick is purely down to setup
tom


you have a point but unfortunately, especially with rotaries, the more freeflowing the turbo is the bigger the kick and you cant really do much about it, its ok with small turbos but you are then limited with the power.

here is one of my old power graphs, the higher line is BHP at the wheels at 0.7 bar boost.
As you can see its quite a smooth power curve but was still an animal mid corner especially at higher boost levels.

I am going to have a play at controlling the boost without changing pullies and belts. Using a wastegate and a boost controller (which i already have.)



[Edited on 25-10-09 by Antnicuk]