Don't forget, the flat-12 engine in the 917 used the Type 912 designator.

 

A little bird told me that they've recalled all of the new Ricardo gearboxes back to PMNA for an "update". Don't know if it is related to CORE's issues.

All the GTD cars were delivered with the older **** RSR gearboxes in the cars and they were given the Ricardo gearbox in a crate and asked not to run them until race weekend. Those are the boxes Porsche wants back.

 

Matt, keep us posted…very interested in hearing how things are going for the Core/PMNA cars !

 

have you heard what the root cause is? i.e. a manufacturing defect in a batch, early design flaw, excessive stress from the banking at Daytona, etc?

 

hum....

 

I honestly know nothing other than they want the boxes back to look at them. Could be preemptive inspection. Could be to remedy a flaw revealed in the testing. Don't know if they will ever tell us why either.

But knowing Porsche they take this stuff seriously. If they doubt that new gearbox at all I bet they have the cars run the previous box if they can't work out the bugs in time.

Hopefully it is something they can solve internally. Based on my experiences with manufacturing with Ricardo things happen at a glacial pace.

PMNA and I sometimes compete for the same customers but at the end of the day I always want to see the marque succeed regardless of whose parts are in the cars.

 

Racer is reporting that it is a driveshaft problem, not transmission http://www.racer.com/imsa-roar-befor...icle/328298/3/

 

Driveshaft angles have always been the achilles heel of the 911s at Daytona. Maybe the gearbox return isn't related. Or maybe their driveshaft solution requires updating the output flanges on the gearboxes themselves.

The interesting thing is that the 2010-2013 **** RSR gearbox and this new Ricardo gearbox run a drop gear design specifically to adjust the location of the output flanges so that they are lower and able to run the cars with more drop without putting those high angles on the axles.

 

Not good news coming out of Dubai. Molitor went through two gearboxes before DNFing. Don't know the exact nature of the failures but have heard it may be related to the layshaft (which has replaced the pinion in the new design).

 

Time to go back to what works then. Did you get my care package?