Turkey 2018

[mknight]

It's not strange at all. The biggest stress for the whole drivetrain comes at the start from zero speed. I would say that majority of drivestahfts and diffs get broken during starts or in first gear corners.

I though it was strange right after service if it was to be caused by an impact or wear. But I have no idea how much diagnostics they do in service (and how many sensors they have to monitor the health).

If it was just caused by a hidden manufacturing defect or something like that I get that it's not strange.

[SubaruNorway]

I though it was strange if it was to be caused by an impact or wear. But I have no idea how much diagnostics they do in service (and how many sensors they have to monitor the health).

If it was just caused by a hidden manufacturing defect or something like that I get that it's not strange.

Could maybe have something to do with them running the car higher than normal, causes more stress on the drive shaft joints due to the angle they are at.

Just out of interest, did anyone on here manage to drive the stages in a rental?

[Rally Power]

i am wondering if this was good thing or bad that in addition to being twisty, rough roads were also quite narrow. I believe Latvala mentioned before event that due to narrow roads there are less options to avoid things and choose other lines.

Actually, the parts I’ve mentioned (after a quick check on onboards) were quite narrow (the second is where Evans/Ostberg drama took place), resulting on a harsh combination of deep roots and big stones.

From this interview (only parts related to the topic translated by me): https://sport.idnes.cz/jan-kopecky-t...motorsport_tof

Who am I to question Kopecky words, but from the onboards anyone can see that the most problematic sections of Friday stages weren’t that long and Saturday or Sunday SS’s were far less rough. What probably made his life harder was having to deal with a permanent rocky surface, once WRC2 tyres are still looking to be more prone to punctures.

[dimviii]

or in first gear corners.

specially with a lot of steering.

[Mirek]

I though it was strange right after service if it was to be caused by an impact or wear. But I have no idea how much diagnostics they do in service (and how many sensors they have to monitor the health).

If it was just caused by a hidden manufacturing defect or something like that I get that it's not strange.

Well, I think that there is no way how to find some internal cracks in the material during service stop because You can't do an X-Ray or ultrasonic scan there. You have to trust Your experience. The thing is that if there is a crack in the material already initiated it will most likely result in a breakage when there is the highest load. That is when there is the highest torque (acceleration on first gear from zero speed) or when there is high torque combined with an extreme angle of the driveshaft joint (full steering at jump landing as the most extreme case).

specially with a lot of steering.

Yes, I know that on asphalt with gr.N Civic You can nearly brake the driveshaft at will...

[Indreq]

specially with a lot of steering.

i am driving competitively off-road and there sure way to break driveshaft or diff is when slipping tire suddenly finds traction. Especially on low gears when lot of torque is applied. Could be similar thing on 1st gear corners also in rally - quite slowly rotating tires at full engine power (= huge torque applied) and if thread catches at some edge of embedded rock then it easily may break something. At higher speeds torque is substantially smaller. And torque is what breaks things.

[Indreq]

Yes, I know that on asphalt with gr.N Civic You can nearly brake the driveshaft at will...

True. Strangely, when i did some light hobby-rallying 2003-2007 (FWD Kadett GSI, 190hp) then most driveshafts i broke during winter, on spikes (swedish rally tire). Perhaps because i drove very little on tarmac...

[Ucci]

I also have to say I like the idea of having one slower and rougher rally in the calendar. The team with the most durable car can shine, and also drivers who can manage a more sensible speed.

100% agree! Rally is not a circuit racing and sometimes you need to lift the right leg....tactical approach.

[EstWRC]

https://www.youtube.com/watch?v=dq59W8iJJIo

[Rallyper]

100% agree! Rally is not a circuit racing and sometimes you need to lift the right leg....tactical approach.

Having said that, you must consider the small amount of competitors. Only those having enough money to spend on a car in an one off rally, more or less useless after such rally.

There´s been much talk like black and white. I´m not against different kinds of rallies, but much of what have been seen from Turkey isn´t in favour for more of this hard ad ruff kind of rallies.