IMSA DPi Discussion - Page 71

JHamilton · 14 Dec 2016, 21:43 (Ref:3696236)

Quote:

Originally Posted by canaglia

Pheraps mazda has a worse top speed because the engine developes less than 600hp, surely because of reliability issues (not surprised about that)

We're on day 2 of testing as well. It's way too early to draw any conclusions.

TF110 · 14 Dec 2016, 22:10 (Ref:3696240)

Maybe Mazda turned the engine down a bit because of the cooling factor, but the cooling issue was supposed to be the gearbox.

Damian Baldi · 14 Dec 2016, 22:27 (Ref:3696245)

The Cadillac cars reached 196 to 201 mph today, that's 321 km/h top speed.

The Riley with the Gibson engine 194 mph, and the Mazda was by far the slowest with just 186 mph

FormulaFox · 15 Dec 2016, 00:10 (Ref:3696270)

Quote:

Originally Posted by TF110

Maybe Mazda turned the engine down a bit because of the cooling factor, but the cooling issue was supposed to be the gearbox.

Yeah, people keep talking about the engine, but that engine was actually pretty solid last year - IIRC, there was only one failure of the actual engine, with everything else being caused by other components around it and the gearbox being the biggest single problem. Any or all of these issues could have been effectively addressed in the offseason.

It's not like the Mazda MZR engine line hasn't already been proven capable of producing this power reliably - the expected 2017 power output is on par with what the MZR was supposedly pushing out in the P1 Dysons.

godlameroso · 15 Dec 2016, 00:13 (Ref:3696272)

Mazda is either sand bagging or someone is getting fired.

TF110 · 15 Dec 2016, 00:17 (Ref:3696274)

No reason for panic. It's not like their diesel car, they're down on top speed but I think they can get there.

Damian Baldi · 15 Dec 2016, 00:21 (Ref:3696275)

I have read that they were using the 2017 spec engine for the first time this week. All the previous tests were made with with the 2016 engine. So, maybe they have just one engine for this test and they tried to focus on the chassis setup, detuning the engine to keep it safe.

However, I don't know how this could be any usefull for IMSA BoP, because it's obvious that the car is 2 seconds slow.

Damian Baldi · 15 Dec 2016, 00:39 (Ref:3696279)

On the link, you can see top speeds for each car. The Gibson engined Riley is on the same speed as the Cadillac, but you can see how slow was the Mazda. Ricky Taylor got the higher final speed, but not the best lap time, so maybe they were using low downforce.

http://results.imsa.com/Results/16_2...ession%204.PDF

MoMedic9019 · 15 Dec 2016, 01:27 (Ref:3696288)

Quote:

Originally Posted by Damian Baldi

I have read that they were using the 2017 spec engine for the first time this week. All the previous tests were made with with the 2016 engine. So, maybe they have just one engine for this test and they tried to focus on the chassis setup, detuning the engine to keep it safe.

This is one of their first major shakedown tests with the full package. They've had cooling issues and other things, top-speed and even overall lap time is not what they were aiming for in this run. Look for them to be much more competitive come the roar.

Quote:

However, I don't know how this could be any usefull for IMSA BoP, because it's obvious that the car is 2 seconds slow.

IMSA won't be bothered with full BoP evaluation this week. They know that few cars have a handle on anything.

FormulaFox · 15 Dec 2016, 01:50 (Ref:3696292)

Quote:

Originally Posted by godlameroso

Mazda is either sand bagging or someone is getting fired.

Or they're still learning a new car and just aren't pushing until they learn it's quirks - just like everyone else.

I honestly expect times at the Roar to be even quicker than this test across the board specifically due to this. (the real question will be by how much)

DistortedSmile · 15 Dec 2016, 02:41 (Ref:3696302)

The Mazda is a work of art, shame it doesn't have a 4-rotor in the back to make it sound as good as it looks

fieldodreams79 · 15 Dec 2016, 03:17 (Ref:3696308)

Quote:

Originally Posted by DistortedSmile

The Mazda is a work of art, shame it doesn't have a 4-rotor in the back to make it sound as good as it looks

While I agree, I know some that don't appreciate the lovely noise of a 4 rotor.

I certainly feel like Mazda is the underdog, again, but I do hope they can pull at least one race win off this year. Say what we want about their prototype effort, they've been consistently in the series for a while and I'd like to see a trophy for them.

truebeliever · 15 Dec 2016, 07:14 (Ref:3696333)

Quote:

Originally Posted by godlameroso

Mazda is either sand bagging or someone is getting fired.

I think par for the course.

Speedsource are doing what they do best.

Maelochs · 15 Dec 2016, 12:15 (Ref:3696384)

Quote:

Originally Posted by fieldodreams79

While I agree, I know some that don't appreciate the lovely noise of a 4 rotor.

Everyone does ... in the brief period before they lose their hearing permanently.

As a Mazda fan, I am a little concerned that the 2-liter AER/MZR simply won't be able to keep up with the much bigger competition ... on the other hand, Mazda was able to keep up with the old MZR in their old Lola chassis ... complete dinosaur bodies with weak engines, and they still could have podiumed and even won if other things hadn't gone wrong.

Coach Ep · 15 Dec 2016, 13:02 (Ref:3696397)

how about this X-mas song!

https://www.youtube.com/watch?v=pX7T2Q7xqQM

(I'm sure I've told the story about the car off track at T10 many times before...)

JLGarcia · 15 Dec 2016, 13:09 (Ref:3696398)

Quote:

Originally Posted by DistortedSmile

The Mazda is a work of art, shame it doesn't have a 4-rotor in the back to make it sound as good as it looks

Yeah, because the last rotary prototype outing worked out so well.

wdave0 · 15 Dec 2016, 13:49 (Ref:3696409)

Quote:

Originally Posted by JLGarcia

Yeah, because the last rotary prototype outing worked out so well.

Jim Downing's Kudzu 4 rotor sounded great without being annoying and ran very well - I believe that was the last 4 rotor racing. Agreed, the 787 was a bit too loud.

fieldodreams79 · 15 Dec 2016, 13:51 (Ref:3696412)

Quote:

Originally Posted by Maelochs

Everyone does ... in the brief period before they lose their hearing permanently.

As a Mazda fan, I am a little concerned that the 2-liter AER/MZR simply won't be able to keep up with the much bigger competition ... on the other hand, Mazda was able to keep up with the old MZR in their old Lola chassis ... complete dinosaur bodies with weak engines, and they still could have podiumed and even won if other things hadn't gone wrong.

I give them a shot. A small one with an AER, but it's a shot.

wdave0 · 15 Dec 2016, 13:52 (Ref:3696413)

Quote:

Originally Posted by truebeliever

I think par for the course.

Speedsource are doing what they do best.

I'd bet they have the engine turned down both because it is new and to lighten the load on the transmission until they can get the overheating issues straightened out.

fieldodreams79 · 15 Dec 2016, 14:11 (Ref:3696415)

Quote:

Originally Posted by wdave0

Jim Downing's Kudzu 4 rotor sounded great without being annoying and ran very well - I believe that was the last 4 rotor racing. Agreed, the 787 was a bit too loud.

It looked cool too, but there were some others that were painfully loud and slow.

CyberMotor · 15 Dec 2016, 14:27 (Ref:3696418)

Quote:

Originally Posted by wdave0

Jim Downing's Kudzu 4 rotor sounded great without being annoying and ran very well - I believe that was the last 4 rotor racing. Agreed, the 787 was a bit too loud.

I agree, the four-rotor was one sweet sounding machine. It was very close to sounding like the V-12s.

fieldodreams79 · 15 Dec 2016, 15:50 (Ref:3696437)

That's what I'm talkin' bout:

what's the dumbbell for? Reps in between services?

from here:
http://www.racer.com/imsa/item/13716...ett_1213__733a

JLGarcia · 15 Dec 2016, 16:26 (Ref:3696445)

Quote:

Originally Posted by wdave0

Jim Downing's Kudzu 4 rotor sounded great without being annoying and ran very well - I believe that was the last 4 rotor racing. Agreed, the 787 was a bit too loud.

The last 4-rotor, but there was a rather disastrous 3-rotor since then.

HORNDAWG · 15 Dec 2016, 16:45 (Ref:3696451)

Quote:

Originally Posted by fieldodreams79

That's what I'm talkin' bout:

what's the dumbbell for? Reps in between services?

from here:
http://www.racer.com/imsa/item/13716...ett_1213__733a

It is there to keep the car weight right while it is on the set up pads/scales when the nose/tail and panels are off, to be able to make adjustments to it.

L.P.

fieldodreams79 · 15 Dec 2016, 16:51 (Ref:3696455)

Quote:

Originally Posted by HORNDAWG

It is there to keep the car weight right while it is on the set up pads/scales when the nose/tail and panels are off, to be able to make adjustments to it.

L.P.

Interesting. Figured it was something like that.

Can't believe with the number of times I've been in a prototype paddock that I've never noticed that.

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