tomislavp4 wrote:11 guys have seen my previous post and none of them wrote something
I wonder, is it so hard to write few words like "it sucks", "it´s not gonna work", "looks childlish", "I like it" etc
I need your feedback, positive or negative, it doesn´t metter
You're very impatient! I think it's
because in here, most people don't want to leave it at "I like it" or "it sucks". I like many aspects of the concept and some others I would question a bit. Unrelated/general advice to start with ... whenever you get to the actual building phase, you'll need a facility where you can leave your stuff as it may fall (and I don't mean untidy!). Starting and finishing every day with a major organizing effort is very unproductive. The same applies to design, actually. You'll need a "zone". At least that's my experience.
Dumrick beat me to some points, but I guess you can handle some repetition. Regarding the vehicle, I'll start off with what I see as the positives:
The drop shape, well worth exploring in a vehicle that has no great demands for internal space. Try and keep it clean and simple, IMHO, and it'll be all the better. The serious aero guys can elaborate further, I'm sure. I don't know what you're considering as the guiding principle for your chassis structure, but I'd explore using a triangular spaceframe that'd fit inside the "drop" like a hand in a glove - something that could also prove very rigid indeed.
Then, moving on to the grey area: I can't remember seeing an all wheel drive trike/three wheeler, ever. From your drawing it isn't even clear which wheels are supposed to be the steering ones. One, two, all? I recommend the Gordon Murray approach - from the very beginning, do not only do designs/drawings but also a very rough dynamic physics model with enough tolerance so that it can be continually refined within acceptable values as the design gets more and more accurate. (Amazing as the McLaren F1 looks, the outward appearance was designed late in the process. It tends to be that good physics produce beautiful shapes.)
The physics model I'd see especially important as it seems likely that in such a shape most of the mass has to be near the front. Not only that, most of the aero load would also be produced near the front (is that a ground effect shape towards the rear?). But then again as there’s only one wheel at the back, it might experience a comparable force to any ONE wheel ... I won’t consider this further now, but you’ll have to. And if there's an electric motor inside every wheel, clearly that'd add to unsprung weight. Widthwise you’re in supercar territory with 2 m, but it might well be that you need that ... dunno, I’ve only had a very superficial look at three wheelers.
And onwards to what I see as potential negatives: Is this supposed to be a road going vehicle? If so, you need to consider ground clearance. Whereas I can well imagine the drop shape being advantageous within your set of performance goals, your height (or “lowness” rather ...) seems pretty darn optimistic for an enclosed vehicle anyway. Your eye level would be around 70 cm at the most. Perhaps suitable for Formula 1, but considering that you’d have the front wheel well and other bodywork extending a full metre to the side from where your head is – and almost as high – your visibility could be dangerously blocked.
You certainly can’t hit the apexes like that – not without extrasensory perception. It’s no accident that the smallest roadsters tend to be soft top vehicles with (near) open wheel configurations at the front. Also the angle of your windscreen/glass roof seems to be quite shallow. Remember that with light passing through a denser substance than air, the larger the angle to the normal of the transparent surface, the less of the light is transmitted and more reflected. So you’ll have to make sure that when you sit down and look forward you’ll actually see something else than the reflection of your thighs ... !
Finally a disclaimer. In the end, you have to think for yourself. Even if I, and others, might have their ideas it’s not us that are going to go through with this. It’s you behind the wheel. Figuratively speaking and in the end in very real terms too.
. I am waiting to be amazed.