LMDh (DPi regulations version 2.0) - Page 13

veeten · 30 Jan 2022, 01:51 (Ref:4096253)

Grand Touring Prototype... not too bad, and has a connection to the past when they had multiple chassis and engines from many manufacturers.
Not to mention that these will be running in both series.

seanyb505 · 9 Feb 2022, 15:12 (Ref:4097946)

https://www.dailysportscar.com/2022/...t-gtp-car.html
Not a bad looking rendition of a car.

**FIRE** · 9 Feb 2022, 15:55 (Ref:4097951)

Quote:

Originally Posted by seanyb505

https://www.dailysportscar.com/2022/...t-gtp-car.html
Not a bad looking rendition of a car.

The front looks more like a GT.

TF110 · 9 Feb 2022, 18:09 (Ref:4097970)

I really like it. Best looking of the new prototypes so far imo.

**joeb** · 9 Feb 2022, 19:41 (Ref:4097986)

Quote:

Originally Posted by FIRE

The front looks more like a GT.

Perhaps Dallara had some internal inspiration

S griffin · 11 Feb 2022, 09:39 (Ref:4098212)

Definitely wouldn't look out of place in a 90s GT series

**joeb** · 15 Mar 2022, 14:25 (Ref:4102591)

porsche has now tested with the spec hybrid unit.

https://racer.com/2022/03/14/porsche...prototype-ers/

pretty low on the details, but it appears to have gone well

S griffin · 15 Mar 2022, 16:29 (Ref:4102629)

Couldn't think of a better marque to first test it. If it's a trouble free run, that's a good start

**Adam43** · 16 Mar 2022, 03:23 (Ref:4102703)

What about Vanwall?

S griffin · 16 Mar 2022, 14:13 (Ref:4102786)

Ask Colin Kolles!

deggis · 11 Apr 2022, 18:04 (Ref:4106356)

LMDh technical regs have been published.

https://www.fia.com/sites/default/fi...2022.04.05.pdf

**joeb** · 11 Apr 2022, 19:36 (Ref:4106377)

Quote:

Originally Posted by deggis

LMDh technical regs have been published.

https://www.fia.com/sites/default/fi...2022.04.05.pdf

Thanks for posting this. Lots to digest in there! I just skimmed through and looked at a few things. Saw that the engine cover fin is compulsory. Not sure if I knew that for lmdh. But they also say it is located on the engine cover, what if you had a front engine car?

seanyb505 · 11 Apr 2022, 19:54 (Ref:4106379)

Now we see the real reason for keeping panoz out!

And we already knew Nissan doesn't care about imsa, or their own front engine race program

broadrun96 · 11 Apr 2022, 21:56 (Ref:4106409)

6.4.6 At least one proximity sensor is mandatory to forbid the start of the ICE or any powering electric motor while the coupling is connected to the car.

Guess we're going back to the engine off refueling? Wonder if they'll expand that to other classes as well?

And for a certain member here who loves the GTs with the fabric tow eyes

14.12 Towing eyes

--must be rigid, made from steel...

canaglia · 11 Apr 2022, 22:53 (Ref:4106414)

Gave a quick eye, maybe I'll read it better some time later in future but it seems most of undercar aero design is basically mandatory/spec. Same kind of torque/power curve used for LMH and strange managment of hybrid boost, 30KW only for LM and daytona, 50KW for other circuits. Mandatory 7 speeds gearbox.

S griffin · 11 Apr 2022, 22:53 (Ref:4106415)

Looks like some teams will need some really good technical brains to help digest the rule book

broadrun96 · 3 Jun 2022, 13:33 (Ref:4112669)

Acura showed something, I guess

https://sportscar365.com/imsa/iwsc/a...x-06-lmdh-car/

**joeb** · 3 Jun 2022, 14:59 (Ref:4112683)

Quote:

Originally Posted by broadrun96

Acura showed something, I guess

https://sportscar365.com/imsa/iwsc/a...x-06-lmdh-car/

It's a new Oreca, and the styling of new Oreca prototypes has been, lets say, incremental, going back 15 years!

I'm sure once we get a non camo look we will notice some differences.

possibly some different ducting on the rear fenders and a different splitter shape.

veeten · 3 Jun 2022, 19:21 (Ref:4112714)

Well, now that we've seen both the Acura and cadillac GTPs (LMDh), this should have us "all a twitter" for the rest of them(BMW, Porsche, Lamborghini, et al).

**Adam43** · 4 Jun 2022, 00:35 (Ref:4112757)

Quote:

Originally Posted by broadrun96

Acura showed something, I guess

https://sportscar365.com/imsa/iwsc/a...x-06-lmdh-car/

Meet the new car, same as the old car.

**joeb** · 4 Jun 2022, 00:55 (Ref:4112758)

Quote:

Originally Posted by Adam43

Meet the new car, same as the old car.

We won't get fooled again!

broadrun96 · 4 Jun 2022, 01:12 (Ref:4112761)

Quote:

Originally Posted by Adam43

Meet the new car, same as the old car.

Hey, they changed from purple lights to white paint strip sir, that's new

seanyb505 · 4 Jun 2022, 10:37 (Ref:4112814)

I like that the pattern is the type S logos.

**joeb** · 4 Jun 2022, 11:58 (Ref:4112823)

Quote:

Originally Posted by seanyb505

I like that the pattern is the type S logos.

It took me a few hours to figure out why they used the S in their camo.

**joeb** · 10 Jun 2022, 15:05 (Ref:4114012)

In an article on Road and Track about the new Caddy engine they had this info on engine regulations that I hadn't seen before:

Quote:

Regulations for LMDh engines are fairly open. They don't need to be production based, and as long as they fit within specified dimensions, don't rev beyond 10,000 rpm, and exceed 110 decibels in noise testing, they're good to go. Power at the rear axle is limited to between 644 and 697 hp depending on Balance of Performance, and manufacturers can decide how much of that comes from the ICE and how much of it is provided by the hybrid system shared among all LMDh cars.

Any idea how loud the cars are currently? is that 110 decibels similar or a reduction?

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