33 replies to this topic

[JimmyJamJerusalem]

So I'm playing Racedriver Grid (learning Spa), and the back straight at Spa will undoubtedly induce max velocity from our little plastic cars. Just got me thinking... How fast will our supercharged brothers actually go...? Anybody (under laboratory conditions) found out just how fast the supercharged cars will go...?

[NickB787]

OEM ecu is limited, "standalone" will let you know

[slindborg]

fundamentally depends on rev limit and tyre size.... the power/torque of anything 200bhp+ will have is enough to hit almost any theoretical top speed in a vx/elise. note thats a very broad comment and something geared for 300mph wont hit it without K's of power

[Steve B]

OEM ecu is limited, "standalone" will let you know

rev limited or MPH limited? I'd no idea they had an MPH limit if they do, everything has an RPM limit. The gearing isn't particularly high in the VX220 what does 5th give at 3000rpm? Is it about 70mph if so 6500rpm is a bit over 140mph.

Edited by Steve B, 13 December 2009 - 05:57 PM.

[snowwhite]

I swear I have read Vocky do a run down on this recently, covering all the usual gearbox's (turbo, N/A and 6 speed) and engine speeds for what mph. Can't find it now Hopefully he'll appear soon and dazzle us with his mathematical magic

[slindborg]

www.slindborg.host.sk the custom gear ratio bit should work (I know the normal side is broken) if you look at the F23 info bit and use yer noggin

[southpaw]

Turned out there is a seperate speed limiter on the ECU which kicks in at 242km/h Haven't driven an unlimited version yet, but at least I now know I can get 242km/h with the current state of trim

Around 151 mph according to Mark

[The Batman]

can only go as fast as the rev limit/gearbox will let you, bout 150 top end however my new gearbox will be just a bit below that

[Jameshs]

private testing day got me to speedo indicated 150 sc's with a little more to go

[The Batman]

private testing day got me to speedo indicated 150 sc's with a little more to go

thats good going

[vocky]

with a 6850 rev limit 160mph is the max speed for a 2.2 vx / sc or 150mph with a 4.17 diff

[techieboy]

with a 6850 rev limit 160mph is the max speed for a 2.2 vx / sc

Fcuk that, springs to mind.

[Seb.F]

6850 is quite high is it not? For a rev limit?

[theolodian]

6850 is quite high is it not? For a rev limit?

Wuss.

[vocky]

6850 too high 7800 maybe 8200 soon

[Nelly Vx]

8200 with out throwing a rod I'll have some of that

[theolodian]

8200 with out throwing a rod I'll have some of that

That's not impossible to handle of course. Might be good to consider undersized main bearings if you go much higher than that. Oil shear in the bearings can be an issue. By reducing the diameter you reduce the surface speed.

[Seb.F]

I meant for an S/C... Thought it just gets too high powered at that level?

[The Batman]

Mine is at 7k hopefully soon alot more

[Seb.F]

So with just rods a safe rev limit would be..? Around that? 6850?