Virgin Racing was left frustrated by poor weather conditions at Jerez as the team was only able to complete limited mileage for the third successive day of F1 testing.
After a series of installation laps on Wednesday, Timo Glock saw his running limited to just eleven laps on Thursday before an issue with the front wing forced the German to end his running.
The need to make modifications to the front wing mounting on the VR-01 forced the team to sit out the morning running on Friday, with Lucas di Grassi only able to venture onto the track during the afternoon once rain had started to fall.
As a result, di Grassi managed just eight laps during the afternoon, although the team remains hopeful of finally putting some significant mileage on the car on the final day of running on Saturday.
“Once again, despite working round-the-clock to remedy yesterday's problem, we not only missed the opportunity for dry running early this morning, but it was so wet this afternoon that we and all the other teams lost a lot of running later in the session when we were finally able to get going,” technical director Nick Wirth said. “This was particularly annoying given the great efforts by Wirth Research who, rather than just dispatching existing parts from our Bicester base, designed and manufactured new parts, R&D tested them and got them out to the circuit within a 24 hour period.
“Nevertheless, as was the case with the early issues we encountered with last year's Championship-winning LMP1 Acura, the harder you work, the luckier you get and with the hours we are putting in at the moment we are all hoping that our fortunes will change soon!
“The drivers remain positive, the data we are gathering is as expected and we're all keeping our heads down and just getting on with what we need to do at this early stage in our development.”
Di Grassi is due at the wheel of the car again for the final day of running.