My RX7SP build up

RICE RACING · 12-05-2010, 12:50 AM

Quote:

Originally Posted by NoDOHC

How level does the surface have to be to get accurate numbers from the VBOX?

My G-Tech gives dramatically different numbers if I am going uphill or downhill. It reads higher going up a hill. I know that the VBOX is to the G-Tech what a machine gun is to a dart gun, but I am curious what is required for a test setup.

The level makes no difference in a VBOX unlike a G-Tech which only works off an G reading. The G is derived via GPS doppler measure. On my VBOX3i I use also an accel and gyro unit which corrects for use in noisy (read satellite challenged area's). So I can have the ultimate/highest dynamic setting on my VBOX with no draw backs.

When you are coming to testing standards then I always use a known area that is flat within less than 0.5% over the distance, this is only so I have a relative comparison over the many hundreds of logs I have on file from cars I test. As any incline or decline has an effect on the vehicle performance... Any formula can be set up in the VBOX as it measures altitude variations so the power will always be correct

but as stated for ideal vehicle performance always a flat track is best. Corrections can be applied for all normal atmospheric changes due to altitude or temperature as well, this is all common practice but is up to the end user to apply. As VBOX is used by engineers the company does not offer any of this stuff to you in "software" you develop it all yourself

The G-Tech can be a good tool if you respect these limits on basic devices like the Tesla item, > here is a factory proper lab test comparing it to various VBOX units.... its a good read and what got me into VBOX in the first place ! http://www.ausrotary.com/viewtopic.php?f=4&t=143457

Direct link to test http://www.performancebox.co.uk/down...CHvPB_Test.pdf

Here is the finished camera mount

got the position good *I think* same as what I had it before I think, will test it out soon

RICE RACING · 12-06-2010, 05:41 AM

got milk!

RICE RACING · 12-06-2010, 06:39 AM

I have edited video showing the beast (beating all but 1 F40 and having no respect for tire grip!) , but youtube is going BDC style and failing on me

so until then here is some reading

Quote:

Originally Posted by RICE RACING

Are you ready for the results cunts

"Here's the raw Excel data for the fastest 60 to 130 in 9.4 seconds. Do not use data before 60 mph or after 130 mph since I may let up before or after that.

I weighed the car right after the runs:

2,917 lbs (1323kg) without driver
3,113 lbs (1412kg!) with driver " (note 478bhp rated motor)

Car does 60mph to 85mph in ~2.10 seconds compared to RICESP 2.23 seconds

*I need to turn the boost up just a little* ~5k to 7krpm for both vehicles. I estimate my thing has around ~440bhp on ~17psi setting, aiming for honest ~500 honest bhp on 1.5bar boost setting, which should achieve the goal of matching/beating? the F40. My power figure average for the SP is ~270rwkw on my VBOX measure (going off my experience * 1.2 = engine power = ~435bhp)

60mph to 85mph now is .......................... 2.11 seconds basically exactly equal to the USA F40 for which I have a VBOX test from an owner *above* his was on small decent too! so artificially fast in my books.
100-140kmh is 2.10 seconds 70.36 meters (EURO F40 apparently does 2.0 seconds and 67.60 meters but have only ever found one magazine test on that, fastest one ever recorded too btw) listed earlier on.

Basically It's allot faster than the all but one of the Ferrari F40's listed *euro F40 Italian test, probably a boosted up special lol* (USA ones tested by Road and Track I obliterate in same rpm speed tests.)

I have a video of it and will do up a VBOX report showing the boost, back pressure, EGT, Turbine speed, and all the shit I do...... its a very impressive car for what it is. Hiring an air port not far from me for some high speed testing and full performance review. If you compare it to the Domar Jap 500ps cars that cant char the semi slicks as hard as mine nor accelerate no where near as quickly its even more impressive. I love it.

Additional information 17th Dec 2010 test update
60-130mph for RICESP at Aerodrome test is 8.62 seconds (lot faster than the VBOX proof from the F40)

RICE RACING · 12-06-2010, 08:37 AM

http://www.youtube.com/watch?v=k2YVuJg4rSg

As fast as a Pagani Zonda and Ferrari F40, I'll put up the VBOX proof later

Quote:

Originally Posted by RICE RACING

Quote:

Originally Posted by rotorpsi1

Quote:

And that was on Rice's private test track, not some traction prepped drag strip. I seem to recall that the 'supercar' benchmark of the Ford GTHO was around 14.4 or even as low as 14.1. You'd run that with the air con and stereo pumping!

Pete, out of inane curiousity.... what is the highest peak g-force you've managed to log or come across on 'street' tyres? .72 looks pretty good.

i have had cars pull over 1G of accelleration (around 1-1.15G actually)on the street on street tyres,all have been evo's or wrx's or sti's though,i have had my rx7 as hi as 0.95G on the street,and some other cars in the hi 0.8's,all rwd and in the 12 sec bracket.that should give u an idea

i can garauntee the peak g reading u get on the v box will be in first gear,unless ur getting heavy wheelspin,but i doubt it,adn a low 13sec car will not pull 0.72G in second gear thats for sure.

my 1150kg rx7 with 360rwhp and toyo proxes tyres does just over 0.8G in second gear,thats zero wheelpsin and all power,and about 0.65G in 3rd,to give u an idea again,thats harder than most cars pull in first,and im in 3rd

also,u need a G graph,as peak doesnt give u a true idea,if u have huge grip and no power,u can give a huge dump and create a massive g froce spike on launch but it may only last an instant,then falls away to the normal g force.

Please tell me what G you have @ exactly 130kph in 3rd gear when doing a pull from 100 to 160kph *no gear change shunts*.... If you can tell me any G between revs of 6600rpm to 8000rpm in 3rd gear, but preferably at the above road speed to compare and apple to an apple
I tested a car today on road tires 235's that did a honest 0.657G :bow: which is 35% more G than a Pagani Zonda !!!!! which is at its power peak at that speed.
This car 11.4% wheel slip (so near perfect traction capacity) @ 24psi gauge boost pressure 2.6bar absolute pressure *948kpa and 35 deg C! test conditions*.Pump fuel and my WATER INJECTION

The car I tested has 260% more acceleration force than a Spirit R type A @ 130kph which in its own right is not a slow car :laugh:

**110kph to 144kph** (all listed in one gear with no changes involved)
1.55 sec in 54 meters
^ test car
1.83 sec in 65 meters
^ Pagani Zonda
2.42 sec in 86 meters
^ F360 Ferrari
2.91 sec in 103 meters
^ 230rwkw Spirit R Type A

RICESP is 1.84 seconds in 65.38 meters
*Pagani Zonda its test is slighly down hill so I will call myself just as fast! probably faster, have more top end G *acceleration* where as it's Mazzive 6+lt N/A V12 has a superior spread of power*. (It traps 128mph in 400m test) we both do similar 0-100kmh times for what its worth (within 0.1 seconds). I'll update with a full test when time permits

along with overlays between the two cars

EDIT (additional info, back up of first result)
17th Dec 2010 TESTS RICESP is 1.82 seconds in 64.53 meters *From Aerodrome test* SO ITS *officially* FASTER THAN A ZONDA !

RICE RACING · 12-10-2010, 08:36 PM

Here is the graph showing some detail of various parameters & performance. Average figures between test lines shown (Avg-b) *report screen* and peak on datum line of graph in top left box snapshot of instant Graph data figures at that point.

RICE RACING · 12-11-2010, 08:23 AM

I'll post up some other incremental times of the F40, I have 3 separate tests (one factory) two independent (USA and UERO models) and on peak power band test 60mph to 90mph and 70mph to 90mph I have ........

(Peak power band for all cars)

60mph-90mph
EURO F40 = 2.70 seconds
USA F40 = 2.90 seconds
RICESP = 2.59 seconds

70mph-90mph
EURO F40 = 1.90 seconds
USA F40 = 2.10 seconds
RICESP = 1.76 seconds

^ back this up with 2.56 and 1.73 seconds (on a quite damp track too)

so no one hit wonder

Ian · 12-11-2010, 09:04 AM

Just out of curiosity how is your bottom end. Do you have enough pull out of corners IE is the car good for the track or just high power runs?

RICE RACING · 12-11-2010, 09:14 AM

Quote:

Originally Posted by Ian

Just out of curiosity how is your bottom end. Do you have enough pull out of corners IE is the car good for the track or just high power runs?

Did you watch the youtube video? it is insane. for spread of power. In 2nd gear I just roll onto it really gently as if I stab it at low revs I end up off the road (this is why I have traction control fitted, but turned off in that vid to illustrate the power).

I have full 20psi boost at 4400rpm (not just the boost but the power is very strong from these revs onwards, its average power is flat out unreal from 4k to 8k rpm very flexible for a 13B engine)

the whole set up is more around mid range power rather than anything to do with top end

I could improve it even more by dropping the exhaust system pressure by not running a catalyst, but I like it legal and the sound is really nice too in note and volume.

Ian · 12-11-2010, 11:08 AM

Quote:

Originally Posted by RICE RACING

Did you watch the youtube video? it is insane. for spread of power. In 2nd gear I just roll onto it really gently as if I stab it at low revs I end up off the road (this is why I have traction control fitted, but turned off in that vid to illustrate the power).

I have full 20psi boost at 4400rpm (not just the boost but the power is very strong from these revs onwards, its average power is flat out unreal from 4k to 8k rpm very flexible for a 13B engine)

the whole set up is more around mid range power rather than anything to do with top end

I could improve it even more by dropping the exhaust system pressure by not running a catalyst, but I like it legal and the sound is really nice too in note and volume.

Well I am impressed that you are running a cat converter. This is something I will have to install this year. Just surprised you do not burn through those cat converters. Do you have a air pump attached to your catalyst? Do you have to pass emissions?

RICE RACING · 12-17-2010, 10:36 PM

New record for my little cat equipped road going RX7 100kmh to 200kmh of 7.53 seconds!

RICE RACING · 12-18-2010, 01:59 AM

http://www.youtube.com/watch?v=OqvaMTJZn8k

12-06-2010, 05:41 AM	#2
RICE RACING Don Mega Join Date: Dec 2008 Location: Utopia Posts: 1,688 Rep Power: 18	got milk! __________________ www.riceracing.com.au Worlds best Apex Seals Coil on Plug Water Injection ECU Calibration

12-10-2010, 08:36 PM	#5
RICE RACING Don Mega Join Date: Dec 2008 Location: Utopia Posts: 1,688 Rep Power: 18	Here is the graph showing some detail of various parameters & performance. Average figures between test lines shown (Avg-b) report screen and peak on datum line of graph in top left box snapshot of instant Graph data figures at that point. __________________ www.riceracing.com.au Worlds best Apex Seals Coil on Plug Water Injection ECU Calibration

12-11-2010, 08:23 AM	#6
RICE RACING Don Mega Join Date: Dec 2008 Location: Utopia Posts: 1,688 Rep Power: 18	I'll post up some other incremental times of the F40, I have 3 separate tests (one factory) two independent (USA and UERO models) and on peak power band test 60mph to 90mph and 70mph to 90mph I have ........ (Peak power band for all cars) 60mph-90mph EURO F40 = 2.70 seconds USA F40 = 2.90 seconds RICESP = 2.59 seconds 70mph-90mph EURO F40 = 1.90 seconds USA F40 = 2.10 seconds RICESP = 1.76 seconds ^ back this up with 2.56 and 1.73 seconds (on a quite damp track too) so no one hit wonder __________________ www.riceracing.com.au Worlds best Apex Seals Coil on Plug Water Injection ECU Calibration Last edited by RICE RACING; 12-17-2010 at 10:46 PM.

12-11-2010, 09:04 AM	#7
Ian REIAN Join Date: Feb 2008 Posts: 112 Rep Power: 18	Just out of curiosity how is your bottom end. Do you have enough pull out of corners IE is the car good for the track or just high power runs? __________________ 1989 Turbo II. Track Car 1988 10thAE. Garage Queen 400+rwhp

12-17-2010, 10:36 PM	#10
RICE RACING Don Mega Join Date: Dec 2008 Location: Utopia Posts: 1,688 Rep Power: 18	New record for my little cat equipped road going RX7 100kmh to 200kmh of 7.53 seconds! __________________ www.riceracing.com.au Worlds best Apex Seals Coil on Plug Water Injection ECU Calibration Last edited by RICE RACING; 12-17-2010 at 10:40 PM.

12-18-2010, 01:59 AM	#11
RICE RACING Don Mega Join Date: Dec 2008 Location: Utopia Posts: 1,688 Rep Power: 18	http://www.youtube.com/watch?v=OqvaMTJZn8k __________________ www.riceracing.com.au Worlds best Apex Seals Coil on Plug Water Injection ECU Calibration Last edited by RICE RACING; 12-18-2010 at 03:13 AM.