G-Tech figures.

[Dan_G]

got my G-tech from WODJ yesterday so did a couple of tests in the VR4 today.

0-60 in 6.08secs.
and 1/4 in 14.52 secs @101.2

And yesterday I tested my 1.6 Escort 16v and got
0-60 in 12.53 secs and 1/4 in 20.03 secs @ 74.4

right what other vehicles do I have lying around...

cool little device... much smaller than I was expecting

[psbarham]

whos gonna be the first to put it on a moped or a push bike down a very steep hill, i'll let you know what a transit does tomorrow

[Dan_G]

whos gonna be the first to put it on a moped or a push bike down a very steep hill, i'll let you know what a transit does tomorrow

yeah, I think I'm gonna test it on every car I can now....

wonder if car dealers would let you stick it on a car for a test drive

that would be f

[psbarham]

i'm now wondering what the 1/4 mile times are for our kubota ride on mower

[enigma]

0-60 in 6.08secs.
and 1/4 in 14.52 secs @101.2

Cant help thinking that the 1/4 mile times are a tad optomistic

[colVR4]

Was all set to have a play tonight on my private test track (Higham 2 Kimbolton for those that know it) but it started to piss it down and I get wheel spin in the dry when I boot it from first so flooring it in the wet is a non-starter. I will try again when it dries up a bit.

[Dan_G]

Cant help thinking that the 1/4 mile times are a tad optomistic

yeah me too.....

did'nt get to do to many 1/4 runs unfortunatley(not enough road ) ..... with good launches they ranged from 14.5 to 15 secs

although on what felt like my best launch/run I had to lift off quite early(bloody farmers!) but still got a 14.8 @ 81mph but had already hit 90odd and was slowing down
was running 0.9 bar boost at the time...

its just a gizzmo after all...... aint no substitute for a proper run down the 1/4 mile...

[enigma]

yeah me too.....

did'nt get to do to many 1/4 runs unfortunatley(not enough road ) ..... with good launches they ranged from 14.5 to 15 secs

although on what felt like my best launch/run I had to lift off quite early(bloody farmers!) but still got a 14.8 @ 81mph but had already hit 90odd and was slowing down
was running 0.9 bar boost at the time...

its just a gizzmo after all...... aint no substitute for a proper run down the 1/4 mile...

I think its worth doing back to back tests with the APEXI RSM, AP22 and the real deal!

[Roadrunner]

Cant help thinking that the 1/4 mile times are a tad optomistic

I don't know, I don't think they're too optimistic. I did an official run at Crail in my standard manual Legacy RS-B at 13.72s and 102.6mph so the VR-4 times are what I'd expect.

[enigma]

I don't know, I don't think they're too optimistic. I did an official run at Crail in my standard manual Legacy RS-B at 13.72s and 102.6mph so the VR-4 times are what I'd expect.

Looking at the number of people cracking 100 at the 1/4 mile with the G-Tech and comparing that to the reality of modified cars at Santa Pod breaking 100 you will see that Nitrous is required for this feat! Derek and I have both snuck under 14 seconds with no gas, but have been in the 90-95 area.

[enigma]

OK, some quick calcs from THIS PAGE which states MPH is almost directly associated with BHP.

H7 314BHP
Spirit 256BHP
WODJNO 238BHP

All similar spec cars running near identical times.

[colVR4]

Had a quick go this morning, just the one blast on the way to work and got a 8.03 0-60. I didn't think that was too bad for a first attempt, with a little bit of wheelspin. I shall of course be trying to beat that

[pezza]

Hmm a very interesting read in this thread since yesterday evening...

I have been using the G-Tech a fair bit, and yup the results do vary but with
the explanations about heat issues auto box and turbo, this now makes more sense.. I cannot beat 6.01 with .9 bar boost. Wirdy your best time is still safe..
for now

To get an idea what other cars are doing using the G-Tech is def interesting
Keep em coming in..

I am not sure how accurate these gadgets are but how do APEX RSM and AP22
do the same job?

Am still interested in V6-24 estate times.. any one out there tried yet? The saloon times from PSB & Col sound way way quicker that me old estate would ever have been!


Pezzz

[enigma]

The AP22 works in a very similar way using accelerometers

The Apexi uses a combination of accelerometers and actual speed input from the car. So it takes in to account wheelspin etc and self verifies the acceleration calculations. You would expect this to be more accurate.

The G-Tech and AP22 have no idea how far you have actually travelled or your speed, but base their numbers on calculations. I would expect the further you travel the more inaccurate they would be. If the sampling rate is not very high then these inaccuracies will grow as they become less and less representative of real world events.

So for the G-Tech 0-60 would be quite a good representation, but 1/4 mile in my opinion is too far to determine accurately using acceleration alone.

[colVR4]

I did notice that the 0-60 time was displayed before my speedo was reading 60, so I think that it was slightly out. Need to do some more playing and find a better (quieter) test track.

[Roadrunner]

OK, some quick calcs from THIS PAGE which states MPH is almost directly associated with BHP.

H7 314BHP
Spirit 256BHP
WODJNO 238BHP

All similar spec cars running near identical times.

Yep, and that power figure is around what I would expect from my car (decat, running 0.95bar on a cold day). My Legacy didn't have Nitrous either ...

[enigma]

Yep, and that power figure is around what I would expect from my car (decat, running 0.95bar on a cold day). My Legacy didn't have Nitrous either ...

But Petes car is identical if not higher spec than yours and runs a slower mph?

Derek has hit a 13.7 with no gas and I have squeezed under 14

[Roadrunner]

But Petes car is identical if not higher spec than yours and runs a slower mph?

Who knows, maybe his box doesn't respond as quickly.

Derek has hit a 13.7 with no gas and I have squeezed under 14

Yeah, but you guys are launching from 3000rpm! My times were taken with an 800rpm (tickover) start.

From the link you posted, the confusing thing is why neither Derek nor you have terminal velocities in excess of 111mph ...

[enigma]

Who knows, maybe his box doesn't respond as quickly.


Yeah, but you guys are launching from 3000rpm! My times were taken with an 800rpm (tickover) start.

From the link you posted, the confusing thing is why neither Derek nor you have terminal velocities in excess of 111mph ...

This will be down to transmission losses. Those calcs are theoretical and will not take this in to consideration.

The tickover start will primarily affect the ET and not the MPH.

[psbarham]

whos gonna be the first to put it on a moped or a push bike down a very steep hill, i'll let you know what a transit does tomorrow

well the figures you have all been waiting for are in, this was done with optimal performance enhancing factors such as miday sun beating down , red hot engine and the most important bit 3 1/2 tonnes of trailer behind me ,well here we go bet you vr4 lot are starting to panic waiting for this , 0-60 in 68.05 sec , positivly spritely , can i have the top spot on the chart now please ? oops sorry i thought that was slowest times because derek was so anxious to get no.1 , waiting for the to start