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Old 5 Jan 2018, 07:40 (Ref:3790762)   #3226
canaglia
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canaglia should be qualifying in the top 10 on the gridcanaglia should be qualifying in the top 10 on the grid
Because of lack of time, was easy to find out that a destroked 6.2L was the easiest route.
Anyway making some quick maths, 580hp@7000rpm, means something like 590Nm at that rev. No doubts that torque is still on their side.
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Old 5 Jan 2018, 22:45 (Ref:3790939)   #3227
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YZFrider should be qualifying in the top 10 on the gridYZFrider should be qualifying in the top 10 on the grid
Interesting article. By destroking it, it brings it within the performance target of the other motors. Shame, basically they are implying the others motors were held back and only now itís in an even playing field. I suspect with a smaller displacement the new LT will have better fuel consumption in which case the BoP will have to be redone again
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Old 6 Jan 2018, 02:38 (Ref:3790957)   #3228
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Interesting article. By destroking it, it brings it within the performance target of the other motors. Shame, basically they are implying the others motors were held back and only now itís in an even playing field.
The performance target was always the Gibson engine. So yes, everything was being held back, even the Cadillac engine(they just didn't hold them back enough initially).

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I suspect with a smaller displacement the new LT will have better fuel consumption in which case the BoP will have to be redone again
Thus, the entire point of seizing the engine during the previous test. To help get those adjustments done. Hopefully close to correctly on the first try this time.
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Old 6 Jan 2018, 09:20 (Ref:3790981)   #3229
canaglia
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canaglia should be qualifying in the top 10 on the gridcanaglia should be qualifying in the top 10 on the grid
Cadillac teams should not be worried about that.
Last year they had 64L and basically had the same stint lenght of 75-76L fuel tank cars.
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Old 6 Jan 2018, 19:12 (Ref:3791046)   #3230
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Cadillac teams should not be worried about that.
Last year they had 64L and basically had the same stint lenght of 75-76L fuel tank cars.
That was probably aided by the longer gearing too. That on top of the torque they have and the relatively low redline/rev limit.
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Old 6 Jan 2018, 19:49 (Ref:3791053)   #3231
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canaglia should be qualifying in the top 10 on the gridcanaglia should be qualifying in the top 10 on the grid
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That was probably aided by the longer gearing too. That on top of the torque they have and the relatively low redline/rev limit.
longer first and second speed means shorter remaning speeds, consumes should not have changed so much. Hearing engine noise in 2017 onboard videos, cadillac's were using sixth speed in long straight like road america, so it wasn't like audi in 2016 whit so long gears that sixth gear has been used only at le mans. Basically if the car upshifted to third at about 180-200km/h, between that speed and about 270-280km/h there were extra short 3rd, 4th and 5th in the middle.
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Old 7 Jan 2018, 05:06 (Ref:3791138)   #3232
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longer first and second speed means shorter remaning speeds, consumes should not have changed so much. Hearing engine noise in 2017 onboard videos, cadillac's were using sixth speed in long straight like road america, so it wasn't like audi in 2016 whit so long gears that sixth gear has been used only at le mans. Basically if the car upshifted to third at about 180-200km/h, between that speed and about 270-280km/h there were extra short 3rd, 4th and 5th in the middle.
Longer gearing will aid in fuel consumption. The Taylor's were saying the gearing was so long that they were close to stalling in some low speed turns And of course they'll use 6th, because iirc, the series (IMSA) dictates at least some of the gear ratios, they'll run too slow with just going 5th.
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Old 7 Jan 2018, 10:08 (Ref:3791162)   #3233
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canaglia should be qualifying in the top 10 on the gridcanaglia should be qualifying in the top 10 on the grid
https://www.youtube.com/watch?v=P24OSlbRZ3E

onboard with engine sound of #10 cadillac dpi

after slow corner, to me seems that gear shifting was quite usual.... nothing that lets you think about really long ratios at least. For sure taylors were quick shifting in lowest gears.... infact, judging by sound, it seems that the longest ratio was in 3rd or 4th.


ligier lmp2 to compare:
https://www.youtube.com/watch?v=iclJPBv8JK4
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Old 7 Jan 2018, 21:06 (Ref:3791264)   #3234
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Originally Posted by canaglia View Post
https://www.youtube.com/watch?v=P24OSlbRZ3E

onboard with engine sound of #10 cadillac dpi

after slow corner, to me seems that gear shifting was quite usual.... nothing that lets you think about really long ratios at least. For sure taylors were quick shifting in lowest gears.... infact, judging by sound, it seems that the longest ratio was in 3rd or 4th.


ligier lmp2 to compare:
https://www.youtube.com/watch?v=iclJPBv8JK4
I don't know if Road America even uses 1st gear. Detroit I think was when they changed the extra long first gear for the WTR Caddy.
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Old 28 Jan 2018, 21:34 (Ref:3796500)   #3235
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kvenom should be qualifying in the top 10 on the gridkvenom should be qualifying in the top 10 on the grid
Solid debut by the Acuras, niggling problems and some rash driving cost them, but its obvious they are going to win races this season.

Caddies gonna Caddy, although they had more troubles this year.

ESM must be shaking their heads, the car was very strong at the end of last season and had the pace in Daytona.

Mazda....Still caught fire, engine still sucks, even Joest caught a case of Speedsource-itis with the #55 losing a wheel. Car was fast, but I don’t think it will ever be reliable enough for the big races. Have race-winning potential for the rest of the season though.
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Old 28 Jan 2018, 23:45 (Ref:3796510)   #3236
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Solid debut by the Acuras, niggling problems and some rash driving cost them, but its obvious they are going to win races this season.

Caddies gonna Caddy, although they had more troubles this year.

ESM must be shaking their heads, the car was very strong at the end of last season and had the pace in Daytona.

Mazda....Still caught fire, engine still sucks, even Joest caught a case of Speedsource-itis with the #55 losing a wheel. Car was fast, but I donít think it will ever be reliable enough for the big races. Have race-winning potential for the rest of the season though.
I was thinking about the same as you. Mazda might be competitive in the short races, but still problems with the car and engine.
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Old 29 Jan 2018, 00:36 (Ref:3796515)   #3237
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Damian Baldi should be qualifying in the top 5 on the gridDamian Baldi should be qualifying in the top 5 on the grid
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Originally Posted by kvenom View Post
Solid debut by the Acuras, niggling problems and some rash driving cost them, but its obvious they are going to win races this season.

Caddies gonna Caddy, although they had more troubles this year.

ESM must be shaking their heads, the car was very strong at the end of last season and had the pace in Daytona.

Mazda....Still caught fire, engine still sucks, even Joest caught a case of Speedsource-itis with the #55 losing a wheel. Car was fast, but I don’t think it will ever be reliable enough for the big races. Have race-winning potential for the rest of the season though.

Yeah, I think that way too.

About Mazda, I think it's too late now. Joest should have tell Mazda to change the chassis and even the engine for this year. They should had have end in the same way (out of the race) but with more potential for the future. The chassis was faster this year, but it is still unreliable. Maybe the small 4l could run better in an Oreca or Dallara, but they should develop a v6 or a v8.
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Old 29 Jan 2018, 02:20 (Ref:3796532)   #3238
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Yeah, I think that way too.

About Mazda, I think it's too late now. Joest should have tell Mazda to change the chassis and even the engine for this year. They should had have end in the same way (out of the race) but with more potential for the future. The chassis was faster this year, but it is still unreliable. Maybe the small 4l could run better in an Oreca or Dallara, but they should develop a v6 or a v8.
It's nowhere near too late.

Joest and Multimatic have been working on the chassis revamp for a little over half a year. It's going to take at least a full year to address the massive number of problems the car has.

There's no reason the engine can't be made reliable enough while being powerful enough, but that's not on Joest or Multimatic. They addressed the only detail they could when it came to the engine(cooling). The rest is up to AER and Mazda.
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Old 29 Jan 2018, 02:31 (Ref:3796533)   #3239
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Damian Baldi should be qualifying in the top 5 on the gridDamian Baldi should be qualifying in the top 5 on the grid
Yeah, but the rules avoid to change things through the year. So, my point was that it could be better if Jost have told Mazda to review the project. Obviously, it would be too late for this year, but now are are at the same point.

Current car will be good in short races anyway.
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Old 29 Jan 2018, 03:27 (Ref:3796536)   #3240
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Yeah, but the rules avoid to change things through the year. So, my point was that it could be better if Jost have told Mazda to review the project. Obviously, it would be too late for this year, but now are are at the same point.

Current car will be good in short races anyway.
How would it be too late for this year? IMSA has multiple times allowed updates to improve the reliability of engine or chassis and allowed Mazda a few last season I believe. It's not like they can't test any changes at any time, they have the time and tech.
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