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Search took 0.02 seconds. Search: Posts Made By: HypermilerAX
Forum: Hypermiling / EcoDriver's Ed 09-10-2018, 04:05 PM
Replies: 11
Views: 3,621
Posted By HypermilerAX
https://www.youtube.com/watch?v=MJFxY7j9ZkY

https://www.youtube.com/watch?v=MJFxY7j9ZkY
Forum: EcoModding Central 10-20-2015, 05:24 AM
Replies: 131
Views: 72,426
Posted By HypermilerAX
Hi, the code is 20CB98 but with a custom 5th gear...

Hi, the code is 20CB98 but with a custom 5th gear out of the 1.4 HDi engine which is 12.7% higher. I also have bigger tires. By the way, I will make an update regarding this because things changed on...
Forum: Aerodynamics 01-01-2015, 02:27 PM
Replies: 31
Views: 5,051
Posted By HypermilerAX
Saw this last day. Not home-made but I see this...

Saw this last day. Not home-made but I see this aero accessory rarely enough to post it.
Forum: General Efficiency Discussion 11-01-2013, 02:07 PM
Replies: 39
Views: 11,243
Posted By HypermilerAX
Idle consumption of a 1.5 diesel vs engine temp

Measurement method:
Fuel pumped out of a bottle and weighed with 0.1 g precision. The scale was oscillating a lot though (vibrations?).

I ran the engine for a minute or so in order to expel all...
Forum: Success Stories 10-21-2013, 04:04 AM
Replies: 16
Views: 5,921
Posted By HypermilerAX
57 mpg @ 80 mph!

I did a high speed test on the freeway, I was very curious to see how much I would consume at high speeds. I used my usual method: filled to the top manually between 2 tolls and weighed what I filled...
Forum: EcoModding Central 10-05-2013, 06:21 AM
Replies: 20
Views: 13,022
Posted By HypermilerAX
I corrected the volume of the first test. I took...

I corrected the volume of the first test. I took 1,00 L for the first bottle I put but the station volume is not as accurate (only 10 mL) as weighing.

Recap :

Before :
Temperature : 25,7°C...
Forum: EcoModding Central 10-04-2013, 12:48 PM
Replies: 20
Views: 13,022
Posted By HypermilerAX
I took the car one week to do a MPG test. I drove...

I took the car one week to do a MPG test. I drove at 56 mph average (GPS) on 70% of the commute, the remaining at 45/50 mph. I got an impressive 3,43 l/100 km (3,53 with GPS distance). At same speed...
Forum: Success Stories 09-30-2013, 02:08 PM
Replies: 30
Views: 8,304
Posted By HypermilerAX
Yep, P&G works great whenever engine load is low....

Yep, P&G works great whenever engine load is low. A powerful, aero and short-geared car will work best. An underpowered car and/or with very high gearing will work less.

My AX's engine, with its...
Forum: EcoModding Central 09-24-2013, 05:45 PM
Replies: 20
Views: 13,022
Posted By HypermilerAX
We did the swap yesterday, everything went fine....

We did the swap yesterday, everything went fine. To test the gearing, I turned the brake disc and compared to the primary cog (=engine). I got 8 revs on engine = 7 revs on wheel but the other wheel...
Forum: EcoModding Central 09-21-2013, 01:28 PM
Replies: 20
Views: 13,022
Posted By HypermilerAX
We did the before test this afternoon. We have a...

We did the before test this afternoon. We have a nice stretch of a road not far away which is good for testing. It's a straight 14,5-km road with a 0,048% grade (according to local topographical...
Forum: EcoModding Central 09-20-2013, 05:49 AM
Replies: 20
Views: 13,022
Posted By HypermilerAX
Peugeot 205 5th gear swap (8.2% improvement at constant 50 mph)

My father introduced me to hypermiling 3 years ago and then I discovered ecomodding myself. And now, my father asks me about ecomodding when he saw what I did on my car. He’s interested in having a...
Forum: Aerodynamics 09-17-2013, 12:50 AM
Replies: 45
Views: 6,629
Posted By HypermilerAX
I'm myself a cat 2 racer. On a traditional bike,...

I'm myself a cat 2 racer. On a traditional bike, the last thing we're looking at is aero as most of the drag is coming from our position and aero effect is much reduced when drafting. We're looking...
Forum: Aerodynamics 09-08-2013, 12:52 PM
Replies: 46
Views: 7,857
Posted By HypermilerAX
In the same vein, a guy mounted an AX diesel...

In the same vein, a guy mounted an AX diesel engine is a plane. He gets 70 mpg at 137 mph.

Gaz'aile 2 : caractéristiques et performances (http://gazaile2.free.fr/caracteristiques.php)
Forum: EcoModding Central 09-01-2013, 04:51 PM
Replies: 92
Views: 39,082
Posted By HypermilerAX
Following. 144 hp for 1400 kg seems...

Following.

144 hp for 1400 kg seems overpowered to me. I would cut at least one cylinder out. :D
Forum: EcoModding Central 09-01-2013, 01:26 PM
Replies: 131
Views: 72,426
Posted By HypermilerAX
I did that before but I was afraid I could loose...

I did that before but I was afraid I could loose some fuel if filled too much to the top. I once had some fuel flowing out of the wheelwell. Filled to the top and probably took some roundabounts a...
Forum: EcoModding Central 08-29-2013, 06:25 PM
Replies: 131
Views: 72,426
Posted By HypermilerAX
The new tires are good, they roll very well and...

The new tires are good, they roll very well and are inflatable up to 51 psi. 5th gear is now 44,7 km/h at 1000 rpm, which is enough (future mods will reduce engine load anyway). Last tank 2,87 l/100...
Forum: General Efficiency Discussion 08-29-2013, 12:13 PM
Replies: 36
Views: 7,131
Posted By HypermilerAX
2CVs have 125R15 tires and they have terrible...

2CVs have 125R15 tires and they have terrible rolling resistance. I had 145R14 tires of similar construction on my car for tests and the rolling resistance was very bad. The tires were nearly hot...
Forum: EcoModding Central 08-27-2013, 01:56 PM
Replies: 392
Views: 103,950
Posted By HypermilerAX
I had made a thread about this. ...

I had made a thread about this.

http://ecomodder.com/forum/showthread.php/do-all-excel-calculator-24478.html

The file is attached in the first post. Go on the Cd/Cr tab. You'll probably have...
Forum: EcoModding Central 08-27-2013, 10:28 AM
Replies: 392
Views: 103,950
Posted By HypermilerAX
You can't determine the drag reduction just out...

You can't determine the drag reduction just out of the increased costing time. I made an excel sheet to calculate the Cd with a coast down test.
I don't know the exact values for your car but I...
Forum: Hypermiling / EcoDriver's Ed 08-13-2013, 03:05 AM
Replies: 243
Views: 41,415
Posted By HypermilerAX
I always drive 50 mph on 70 mph divided highway...

I always drive 50 mph on 70 mph divided highway and never have problems. At rush hour, 55 mph minimum is better but I only drive at 5am, 12am, 2pm and 10pm so there is almost no traffic. Besides,...
Forum: EcoModding Central 07-19-2013, 11:44 AM
Replies: 51
Views: 14,098
Posted By HypermilerAX
It entirely depends on driving. At perfect...

It entirely depends on driving. At perfect constant speed, fuel economy will be exactly the same (never the case in real life though).
On highway driving, the difference is almost negligible. In...
Forum: General Efficiency Discussion 06-17-2013, 03:01 PM
Replies: 14
Views: 5,002
Posted By HypermilerAX
Fr = Cr*m*g Fa = 0,5*rho*CdA*v² Fg =...

Fr = Cr*m*g
Fa = 0,5*rho*CdA*v²
Fg = m*9,81*sin(atan(slope/100)) (slope in %)

P = (Fr+Fa+Fg)*v
Forum: EcoModding Central 05-14-2013, 07:23 PM
Replies: 131
Views: 72,426
Posted By HypermilerAX
Cool, so you got your own 100 mpg project ? Let's...

Cool, so you got your own 100 mpg project ? Let's see who will have the best ideas :D I'm happy to already have been a source of inspiration for you. Good luck !

85 mpg fillup tonight :) My second...
Forum: EcoModding Central 05-10-2013, 04:40 PM
Replies: 131
Views: 72,426
Posted By HypermilerAX
Some pics of the 5th gear change. I swapped 43x33...

Some pics of the 5th gear change. I swapped 43x33 to 47x32 (12,7% longer), which makes 40,8 km/h at 1000 rpm (36,2 before). It really feels amazing, as if the car would need less power to roll. The...
Forum: EcoModding Central 05-10-2013, 02:30 PM
Replies: 131
Views: 72,426
Posted By HypermilerAX
Hello. I don't think the 106 had longer ratios....

Hello. I don't think the 106 had longer ratios. Here is what I know :
The AX diesel from '89 to '92 had a 16x63 differential and 17x61 after '92 (10% longer).
The 106 had a 17x64 differential (the...
Showing results 1 to 25 of 37
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