power vs fastness? This should start some comments!

[mkoch1]

Here are my g50/50 numbers

ring 3.4444
1st 2.6154
2nd 1.789
3rd 1.269
4th .967
5th .756

At the track the car weighed 2550 with me in it. rwhp 511, rwtq 530

mark

[Mr Mac]

Richard

Add a 300 and 800bhp at either end of the range - trying to work out how my 330 will perform. (Nobody say slowly - it wont be funny....)

Regards

Mr Mac

[ultimad]

Sounds interesting.

Getrag 6 Speed :
1st 2nd 3rd 4th 5th 6th Final ratio
3.820 2.200 1.520 1.220 1.020 0.840 3.444

Engine : 610BHP (Flywheel), 560 lb ft

Dunno weight of Can-am ?

Edited by ultimad on Tuesday 20th March 12:39

[RichardD]

Good stuff chaps, will get back on this later this afternoon. Have got to do a 640 or 720 version to mimic the factories 0-100-0 runs

Going back to my previous post, anyone like to guess at the drag coefficient, got 0.344 for my TVR Griffith, Ultima must be pretty close ? (down to adding drag for downforce I suppose and that rear wing?)

Just found the figure for a "1994 Ford Scorpio 24v Ultima", on the WWW, that's not helping

[RichardD]

mkoch1 said:

Here are my g50/50 numbers

Mark, if you have the @rpm's for the power/torque numbers, they would help a lot, plus the engines redline.

[RichardD]

Mr Mac said:

...trying to work out how my 330 will perform. (Nobody say slowly - it wont be funny....)

Would say like a normal modern TVR, .

Hopefully in the 9's to 100mph and low to mid 4's to 60mph, assuming that the gearing would allow 100 to be reached in 3rd.

[mkoch1]

I think the rev limiter is set at 6200. I try to shift around 6K



mark

[steve_d]

.................1st....2nd....3rd....4th....5th....6th....Final
G50/00 1987………………3.500..2.059..1.409..1.074..0.861..0.861..3.444
G50/00 1988………………3.500..2.059..1.409..1.074..0.868..0.868..3.444
G50/01 1987………………3.500..2.059..1.409..1.125..0.889..0.889..3.444
G50/01 1988………………3.500..2.059..1.409..1.125..0.892..0.892..3.444
G50/02 1987………………3.154..1.895..1.333..1.036..0.861..0.861..3.444
G50/02 1988+……………..3.154..1.895..1.333..1.036..0.868..0.868..3.444
G50/50……………………..3.154..1.789..1.269..0.967..0.756..0.756..3.444
M64/00……………………..3.500..2.118..1.444..1.086..0.868..0.868..3.444
G50/03……………………..3.500..2.059..1.407..1.086..0.868..0.868..3.444
G50/04……………………..3.154..1.895..1.333..1.029..0.868..0.868..3.444
M64/02……………………..3.154..1.895..1.333..1.029..0.756..0.756..3.444
G50/05……………………..3.500..2.059..1.407..1.086..0.868..0.868..3.333
G50/10……………………..3.154..1.695..1.407..1.086..0.868..0.868..3.444
G50/52……………………..3.154..1.789..1.269..0.967..0.756..0.756..3.444
G50 6 speed
(Non turbo)...3.820..2.050..1.410..1.120..0.920..0.780..3.444
G50 6 speed
(Turbo)…….....3.818..2.150..1.560..1.210..0.970..0.750..3.444
Getrag 6 Speed……3.820..2.200..1.520..1.220..1.020..0.840..3.444
Getrag 6 Speed
(Turbo)..........….3.820..2.140..1.480..1.180..0.970..0.790..3.444
Getrag 6 Speed
(X50)….......…3.820..2.050..1.410..1.120..0.920..0.750..3.444
4 Speed 930
Turbo…......…….2.250..1.300..0.890..0.660..0.660..0.660..4.220
G50/21……………………..3.818..2.150..1.560..1.242..1.027..0.820..3.444
G50/20……………………..3.818..2.048..1.407..1.118..0.921..0.755..3.444
G50/20 high 6th……3.818..2.048..1.407..1.118..0.921..0.688..3.444
G50/50 or 52
high 6th……......3.154..1.789..1.269..0.967..0.688..0.688..3.444

Sod it... I'm not going to p1ss about any more trying to get the columns to line up.

Steve

[shithotfast]

mine is a g50/03 box, dyno shows peek torque of 387.8, and 328.4 hp. Spyder weighs 1970lb / 850 kg (the ultima specs say. MAX revs of 5800. So what other info do you need? Technical stuff like "it goes really wizzy??

[RichardD]

steve_d said:

More numbers than want to shake a stick at

That's great, do you have an idea which one the factory record breaking cars would have, believe they would hit 60 in first and 100 in 2nd (hence not wasting time changing gears for the 0-100-0) ?

[RichardD]

mkoch1 said:

I think the rev limiter is set at 6200. I try to shift around 6K

mark

Right overload here we go !!

Is your engine really a 600bhp or thereabouts engine as I don't fully understand the US rwhp, are US "hp" as big as European ones? Am sure they are generally bigger than TVR ones anyway

With 305/35 * 18 wheels and the gearing you gave earlier am getting :-

I get gear speeds of 55,80,109,141 and 194 in 5th.
0-60 mph 4.17
0-100 mph 7.85
0-150 mph 16.23

1/4 mile 11.91 secs @ 128 mph using a launch of 4500 revs. It optimised this launch based on filling in the blanks on the dyno graph at low revs, if you have actual numbers for low rpm for the engine it may help.

Changing the final drive to something like 3.1 would give a 200mph top speed.

However, changing the numbers to being at the wheels rather than engine :-

1/4 mile 11.38 secs @ 136 mph.
0-60 mph 3.84
0-100 mph 7.10
0-150 mph 13.78

(These numbers guess the drag coeff at 0.36)
(Oh and coef of static friction 0.8 and coef of kinetic friction 0.75 - these could be increased for the special tyres on a drag strip ! )

[Mr Mac]

RichardD said:

Mr Mac said:

...trying to work out how my 330 will perform. (Nobody say slowly - it wont be funny....)

Would say like a normal modern TVR, .

Hopefully in the 9's to 100mph and low to mid 4's to 60mph, assuming that the gearing would allow 100 to be reached in 3rd.

Well that's not technically slow, and at least I know what the next project is........

[chuntington101]

mkoch1 said:

I think the rev limiter is set at 6200. I try to shift around 6K



mark

mark, that curve looks amazing for a turbo motor! really nice work.


thanks Chris.

[gtr-tt]

Here's another one. This is a run without boost controller activated. With it activated I can lift the powerband in the lower region. You can see how the boost comes on slowly.

[splatspeed]

gtr-tt said:

Here's another one. This is a run without boost controller activated. With it activated I can lift the powerband in the lower region. You can see how the boost comes on slowly.

i am in love

[RichardD]

gtr-tt said:

Here's another one. This is a run without boost controller activated. With it activated I can lift the powerband in the lower region. You can see how the boost comes on slowly.

(That's one per turbo plus an extra one for that many rpm!)

Hello Mikael

Can I ask which gearbox option you have please (hopefully listed previously)? Would be great if its the same as Mark (top of page), as with that much power, you don't want to be wasting time changing gears too much!

[gtr-tt]

RichardD said:

(That's one per turbo plus an extra one for that many rpm!)

Hello Mikael

Can I ask which gearbox option you have please (hopefully listed previously)? Would be great if its the same as Mark (top of page), as with that much power, you don't want to be wasting time changing gears too much!

I use a four speed 930 box
2.250
1.304
0.892
0.625
Final 4.222

www.kenson.nu/ultima/930T.htm

The "gap" from 1st to 2nd is a bit big so I rev to 9000 in 1st if I'm in a hurry

[RichardD]

shithotfast said:

mine is a g50/03 box, dyno shows peek torque of 387.8, and 328.4 hp. Spyder weighs 1970lb / 850 kg (the ultima specs say. MAX revs of 5800. So what other info do you need? Technical stuff like "it goes really wizzy??

Hello Paul. Could do with the revs for bhp and torque really. There are wizzy things like engine bog down deceleration rate but I leave them alone

What rear tyre size, have 305/35*18 here ?

[andygtt]

I used the 930 box in my Canam and I used to swear by it, as its as strong as they come, perfect gearing for acceleration IMO only let down by the clunky gearchange.

[andygtt]

Blimey thats one hell of a power curve.... and all the way to 8000rpm!!!

If I can get my twin turbo V12 to rev that high I'd have a theoretical 300mph 6th!!!!