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Search took 0.01 seconds. Search: Posts Made By: Nautilus
Forum: Aerodynamics 04-16-2023, 05:21 PM
Replies: 34
Views: 9,065
Posted By Nautilus
Just came back. Had some very unpleasant...

Just came back.

Had some very unpleasant adventures with the car as the last wave of the pandemic unfolded. The car is now on its second coolant radiator, second set of power steering lines,...
Forum: Aerodynamics 09-14-2020, 04:14 AM
Replies: 35
Views: 10,750
Posted By Nautilus
Mamut High Tack Glue: ...

Mamut High Tack Glue:

https://fixa3.pt/2523-large_default/mamut-glue.jpg

Patented by Den Braven, rebranded as Bostik after Bostik took over the original company.

It's not a temporary...
Forum: Aerodynamics 09-10-2020, 05:31 AM
Replies: 34
Views: 9,065
Posted By Nautilus
Of course, this is why I didn't add them together...

Of course, this is why I didn't add them together and quote a precise number, just assumed a serious drop in Cd.

VAG judged, due to late-2000s experiments with eco versions of Audis and Skodas,...
Forum: Aerodynamics 08-24-2020, 03:14 PM
Replies: 34
Views: 9,065
Posted By Nautilus
Thank you, Sir The experiments on Autospeed...

Thank you, Sir

The experiments on Autospeed gave me the right info to solve a very annoying problem, which comes directly from VW design: the engine bay of the 1.8T is murderously hot.

The...
Forum: Aerodynamics 08-15-2020, 04:54 PM
Replies: 35
Views: 10,750
Posted By Nautilus
On topic: how does all those posted above have...

On topic: how does all those posted above have anything to do with skirts?

Three problems when dealing with skirts:

1. Are they effective at all?
2. How to fit them properly to stay still at...
Forum: Aerodynamics 08-14-2020, 09:06 PM
Replies: 35
Views: 10,750
Posted By Nautilus
UPDATE As of July 2020, the underbelly of...

UPDATE

As of July 2020, the underbelly of the car had been modded as such:

1. Plastic undertray from front bumper lip to just after front axle subframe, at the front end of the catalytic...
Forum: EcoModding Central 05-26-2020, 09:10 AM
Replies: 37
Views: 4,836
Posted By Nautilus
They are made from aluminium, therefore softer...

They are made from aluminium, therefore softer than a solid steel pulley.

Hydraulic / spring belt tensioners from modern days keep the belt tight like a guitar wire, it vibrates when you knock it...
Forum: EcoModding Central 05-25-2020, 04:35 AM
Replies: 37
Views: 4,836
Posted By Nautilus
Been there, done that, ended up poorly :p ...

Been there, done that, ended up poorly :p

There was some formula floating around the net, showing how to calculate joules/second needed to spin a disc of given weight from zero to 6000rpm. It fell...
Forum: General Efficiency Discussion 01-01-2018, 04:33 PM
Replies: 30
Views: 6,245
Posted By Nautilus
The insulated Coolant Recovery Tank: ...

The insulated Coolant Recovery Tank:

https://perfectionistul.files.wordpress.com/2018/01/dsc00146.jpg?w=663

Also visible:

- reflective-insulative material on bulkhead;
- insulative material...
Forum: General Efficiency Discussion 12-31-2017, 01:39 PM
Replies: 30
Views: 6,245
Posted By Nautilus
Background: did too many short city trips, engine...

Background: did too many short city trips, engine took some time to warm itself up.

Problem: too much driving when cold wears engine out, burns too much fuel, and runs the engine pretty noisy and...
Forum: EcoModding Central 10-11-2017, 07:44 AM
Replies: 104
Views: 34,867
Posted By Nautilus
Conclusion after 9 months: some cold water poured...

Conclusion after 9 months: some cold water poured over the initial enthusiasm. The AGM battery did not withstand the test of time.

Supercaps did always fire the needed amps to start the engine in...
Forum: Aerodynamics 07-19-2017, 03:04 AM
Replies: 35
Views: 10,750
Posted By Nautilus
1. There is some small amount of front end lift....

1. There is some small amount of front end lift. Moving non-essential parts from front to rear also lightened the front and contributed to lift.

But, as Dick Shine proved with his track Golf Mk 4,...
Forum: Aerodynamics 07-18-2017, 05:37 AM
Replies: 35
Views: 10,750
Posted By Nautilus
I've tried to cover as much as possible from the...

I've tried to cover as much as possible from the rough parts of the underside with a tray on my car. Less for mileage improvements, although they are, but for a better handling at speed.

Original:...
Forum: EcoModding Central 01-24-2017, 01:00 PM
Replies: 104
Views: 34,867
Posted By Nautilus
120 kms (75 miles) of road tests with new...

120 kms (75 miles) of road tests with new capacitor-battery combo (Varta 12Ah AGM, thicker copper strips between supercaps, no balancing boards) over 2 days and 2 nights.

Temperatures: -2 to 5ºC...
Forum: The Unicorn Corral 01-20-2017, 04:57 PM
Replies: 29
Views: 9,941
Posted By Nautilus
The basic problem of the lead-acid battery is not...

The basic problem of the lead-acid battery is not voltage drop. In fact, on most cars voltage drops under cranking towards 9 volts, and truck industry rate the CCAs as the amps a battery can give...
Forum: EcoModding Central 01-01-2017, 05:31 AM
Replies: 104
Views: 34,867
Posted By Nautilus
The fact lithium ion doesn't do very well at low...

The fact lithium ion doesn't do very well at low temps in terms of power is a minor problem. We can always use a bigger one. The worst thing is lithium-ion doesn't charge properly at low temps, it...
Forum: EcoModding Central 12-31-2016, 04:52 PM
Replies: 104
Views: 34,867
Posted By Nautilus
Supercapacitor + AGM Hybrid

Hello everyone. I've registered my account here firstly and foremostly to reply to this matter.

Having found out Laserhacker's experiment back in 2014, I've tried to replicate it myself. The...
Showing results 1 to 17 of 17

 
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