Quote:
Originally Posted by Piwoslaw
Groar is getting amazing fuel economy  His mods (and those a few other ecomodders) inspired me to go ahead and make my own mods.
Iirc, the Coupe version has slightly lower frontal area, but I have no idea if the Cd is better, and by how much it can be improved. Unless you need a new car, you might want to keep the ZX for a few years and ecomod it to death  Since the transmission needs replacing, maybe it can be regeared with taller gearing?
The rule of thumb is a 12°-14° drop, and the same for the inward angle of the Kammback's sides. Slightly more towards the rear end if it's a long boattail. Have you seen the aero template floating around the forum?
Looks nice from that angle. Do you have a side view? |
Here is side view, I did put one extension on, which brings it out by same distance the original piece did, but still left to do is to add sides and I think getting extension piece cut to get bit more angle to meet that 12-14 degrees inward angle.
Trunk door is made from plastic, really easy to attach things to it as no worries of rusting.
Unfortainely here gearing transmission is several thousands of euros, even used box would be worth of car, which has severe rot problem underside.
Might squeeze one more year out from it if box is staying together, but in my line of work can't risk too much, car's value is 1000 at most, new old Megane Mk1 is around 2000.
This long roof break has bit too long roof for good aero, I did do teardrop photoshop test and according to that I should chop last window section to half at it's rear part to keep it within teardrop shape, so even by adding kammback shape to rear which should be in proper angle, well that is what I hope at least, it is bit too late, might be that there is more to be gained from underside then, spare wheel is underside of the car for example, quite ugly underside means of course lot of losses there.
In megane Coupé rear angle should be such that adding kammback should not be too difficult, I'm restricted to inside bumper level, can't have anything poking outside of that, same for sides and lowest point of vehicle is limited too, so it is quite difficult to get most from the break/stw shape, I at least think Megane Coupé might be easier as it has original shape closer to optimal.
I'm sure you with Groar have gotten your share of young guys with baseball cap sideways pointing, taking pictures and laughing?
I think lost are ignorant ones, but maybe it is us that get the last laugh, in next 10 years not all have chance to drive because of increasing price of fuel and too slow introducing of alternative fuel options.
My first test mods did wake up some unwanted attention for sure, but I hope to make current mods such that those are bit less 'screaming' if you get the idea, I think that is why Groar likes black tape better even it is not so well sticking from what I did read.
My solution, get matching paint to car and paint over silver tape
That is until I get around to fill gaps with plaster of some sort.
I have gravel everywhere in my car, also radiator was quite filled, some of our roads are not so great during spring, so my front air dam transformed to twisted metal after impacting with road at some 40-50kph, got engine bay also filled with mud, air filter soaked and muddy, rocks and mud flew to wind shield too. It was no more than a inch lower than standard bumper, but road was soft and wheels did sank into it quite a bit at that spot.
That occurrence lead me to think about putting metal belly pan, I'm sure anything less will just be broken.