Motors YouTube Videos

silversurfer · 17 Sep 2018 at 20:44

Frozennova said:
Correct, 'Vette with lots chopped off.

There's a pretty interesting wind tunnel vid they did a while ago

I thought that was a relevant post considering that old Lotus big wing thread a while back and how hard it is to improve aerodynamics. An extra 250bhp required to go 170mph then over stock corvette setup I think he says at the end

https://twitter.com/JoshChapinABC11/status/1030285273748385794

Following on from this news video we were trying to figure the air resistance at 198mph for such a high profile car (bit like Leroy) using an old equation I learnt and forgot

The standard Hellcat gets a power bump too. ... Demon territory, the new range-topper features the most powerful production V8 engine with 797 horsepower (594 kilowatts) and 707 pound-feet (958 Newton-meters) of torque

0.5 x 1.293 x 0.383 x 2.4 x 7214.4 = 4287 ~ 958/0.2286 = 4190

The 0.2286 if I remember right is the radius of the wheel. On the plain numbers it looks like the factory hellcat even with 800bhp struggles with 190mph as in above equation 84.9m/s^2
I'm surprised there isnt a website that calculates these figures, anyone know of one because it'd be good to confirm especially the torque/radius thing

Frozennova · 17 Sep 2018 at 20:56

silversurfer said:
I thought that was a relevant post considering that old Lotus big wing thread a while back and how hard it is to improve aerodynamics. An extra 250bhp required to go 170mph then over stock corvette setup I think he says at the end

https://twitter.com/JoshChapinABC11/status/1030285273748385794

Following on from this news video we were trying to figure the air resistance at 198mph for such a high profile car (bit like Leroy) using an old equation I learnt and forgot

0.5 x 1.293 x 0.383 x 2.4 x 7214.4 = 4287 ~ 958/0.2286 = 4190

The 0.2286 if I remember right is the radius of the wheel. On the plain numbers it looks like the factory hellcat even with 800bhp struggles with 190mph as in above equation 84.9m/s^2
I'm surprised there isnt a website that calculates these figures, anyone know of one because it'd be good to confirm especially the torque/radius thing

This will take aero, weight and desired speed as inputs and tell you how much power is needed

http://www.apexgarage.com/tech/horsepower_calc.shtml

Malevolence · 18 Sep 2018 at 20:16

IC3 · 20 Sep 2018 at 22:07

SupraWez · 21 Sep 2018 at 10:43

Bignum (Si) with his Supra doing some laps at Brands

JRS · 21 Sep 2018 at 15:56

Motor Trend's 2018 World's Greatest Drag Race

dacads · 21 Sep 2018 at 22:40

@Acme fancy a new engine?

IC3 · 22 Sep 2018 at 11:56

dacads said:
@Acme fancy a new engine?

225 on the rear is crazy considering this thing actually has 490bhp... :eek:

IC3 · 25 Sep 2018 at 18:51

Firestar_3x · 26 Sep 2018 at 15:00

One for @Lashout_UK IIRC

Gibbo · 26 Sep 2018 at 15:53

I do love Harry's Garage videos, for me he is one of the best and most technical yet brutality honest reviewers.

And I enjoy Chris Harris best for all the skids.

adam cool dude · 26 Sep 2018 at 16:26

JRS said:
Motor Trend's 2018 World's Greatest Drag Race

No GTR?

JRS · 26 Sep 2018 at 16:46

adam cool dude said:
No GTR?

AFAIK the Nissan GT-R hasn't changed much since the NISMO one featured in WGDR 2017 where it finished 5th (11.0 in the 1/4), and looking at the times it would have finished 5th again so no great advertising gains to be made by providing MT with a car.

InvaderGIR · 2 Oct 2018 at 13:20

Temujin · 3 Oct 2018 at 14:19

InvaderGIR said:

I do love the over-engineering of this series, it's always interesting to watch no matter which boring job they're tackling!

Malevolence · 4 Oct 2018 at 19:07

Jonnycoupe · 4 Oct 2018 at 19:31

akaFonzie said:
I do love the over-engineering of this series, it's always interesting to watch no matter which boring job they're tackling!

I like it but it’s a bit a bit OTT. Weld on studs and the push on cable ties would have been neater and lighter.

That starter cable looks a disaster waiting to happen in the engine bay. No evidence of a grommet where it comes out out the longit and then direct to the starter motor, ideally it wants a clipping point to the body before the dynamic loop to the moving starter.

Battery bracket would have been better and half the weight as a tray with a simple strap over the top!

Temujin · 5 Oct 2018 at 08:02

Jonnycoupe said:
That starter cable looks a disaster waiting to happen in the engine bay. No evidence of a grommet where it comes out out the longit and then direct to the starter motor, ideally it wants a clipping point to the body before the dynamic loop to the moving starter.

Battery bracket would have been better and half the weight as a tray with a simple strap over the top!

I don't want to assume you don't know what you're talking about, and i sure don't, but given their proclivity for going OTT on nearly all jobs is there a reason your approach would be inherently better or why theirs is not fit for purpose? They did state in a response on FB that not everything is fully plumbed as a final state right now because it'll all be removed for paint anyway.

IC3 · 6 Oct 2018 at 12:58

Looks familiar.... hmm

Jonnycoupe · 6 Oct 2018 at 15:29

akaFonzie said:
I don't want to assume you don't know what you're talking about, and i sure don't, but given their proclivity for going OTT on nearly all jobs is there a reason your approach would be inherently better or why theirs is not fit for purpose? They did state in a response on FB that not everything is fully plumbed as a final state right now because it'll all be removed for paint anyway.

Fair points but they ain’t gonna get a decent grommet on the starter infused starter cable after crimping on the terminals.

I have spent the last 18months doing the engine bay layout and managing a number of standards and requirements for things exactly like that - so I guess a bit of OEM detail that isn’t completed necessarily for projects like Binky but in the engineering elegance phase both should have the same goal of minimal parts and weight.