Stationary = 0.5mph

grabla
Posts: 42
Joined: Mon Jun 27, 2011 1:26 pm
Location: Leicestershire
Contact:

Stationary = 0.5mph

Postby grabla » Mon Jul 30, 2012 11:16 am

Why am I not seeing 0mph when the car is stationery?

Data from last weekeds Blyton park sprint can be found here.
http://www.zetecinside.com/xr2/download ... T20120722/

Specifically, 20120722_T2.RUN which was my quickest run of the weekend.
Mygale FF200 EcoBoost
Life F88GDIi, Syvecs X10, & Dash4Pro

Turby
Posts: 296
Joined: Thu Nov 17, 2005 2:28 pm

Postby Turby » Mon Aug 06, 2012 2:07 pm

You never will I'm afraid... the best way to determine the start of your run is to look where the long G's first go over, say, 0.3 long G.

Though looking at your data you need to mount the logger more horizontal, as at rest you are showing around 0.33g braking! I believe this can be tuned with an offset in the vehicle options.

grabla
Posts: 42
Joined: Mon Jun 27, 2011 1:26 pm
Location: Leicestershire
Contact:

Postby grabla » Mon Aug 06, 2012 3:24 pm

I made a new bracket last week so it now sits horizontally :D
Mygale FF200 EcoBoost
Life F88GDIi, Syvecs X10, & Dash4Pro

Turby
Posts: 296
Joined: Thu Nov 17, 2005 2:28 pm

Postby Turby » Mon Aug 06, 2012 3:39 pm

Looking at the data (and knowing the spec of your car), I'm surprised to see the lengthy dips in Long G when you change up the box... you still using the clutch for up-shifts ?

grabla
Posts: 42
Joined: Mon Jun 27, 2011 1:26 pm
Location: Leicestershire
Contact:

Postby grabla » Mon Aug 06, 2012 3:40 pm

Yes, the DTA S80 isn't wired in yet for flat shifts. I need to buy the dual channel sensor from Geartronics, and wire it in. The DTA is flashed with their latest firmware, so its just the wires in between that I need to complete :D

I'm hoping that it'll cure the backlash when I change from 1st to 2nd too, it comes in with a hell of a bang when I release the clutch.
Mygale FF200 EcoBoost
Life F88GDIi, Syvecs X10, & Dash4Pro

Turby
Posts: 296
Joined: Thu Nov 17, 2005 2:28 pm

Postby Turby » Mon Aug 06, 2012 3:47 pm

A friend of mine with a Darrian rally car (Hewland box and DTA ECU) just went through all this, IIRC he also used a sensor from Geartronics - the guy they talked him through it all and was mega helpful at setting it all up.

One thing he did find troublesome was fitting the gear change switch, he used a simple microswitch for the gear change request (rather than expensive strain gauge built into the gearstick). If this switch isn't spot on and moves then you end up with lots of gear cuts being requested... not good for stage times!

grabla
Posts: 42
Joined: Mon Jun 27, 2011 1:26 pm
Location: Leicestershire
Contact:

Postby grabla » Mon Aug 06, 2012 3:57 pm

The DTA firmware detects the rotation of the barrel, and cuts the ignition automatically, with allowance for dwell etc.

Saves the need for the Geartronics black box, additional switches, and about £300 :D
Mygale FF200 EcoBoost
Life F88GDIi, Syvecs X10, & Dash4Pro

grabla
Posts: 42
Joined: Mon Jun 27, 2011 1:26 pm
Location: Leicestershire
Contact:

Postby grabla » Mon Aug 06, 2012 4:00 pm

Mygale FF200 EcoBoost
Life F88GDIi, Syvecs X10, & Dash4Pro


Return to “General support questions”

Who is online

Users browsing this forum: No registered users and 283 guests