Canadian818
11-20-2011, 11:11 AM
First heard about the 818 back when the design contest was first started, forgot about it, and then when a buddy showed me some pics of one of the 1/4 scale models. Now i'm hooked, thrown my ideas of building an evo out the window, and have spent the last few weeks reading these fourms. After reading through the EV thread, seeing regen braking mentioned over and over, it got me thinking. Would a KERS system be feasible for the front wheels of an 818?
I've only just started googling the idea, but there seems to be a lot of EV savy people on these fourms so i thought i'd see if there was any interest in playing out my idea. Or shooting it down and saving me time(most likely).
The only KERS systems i know of are the ones developed for F1. For the 2009 race year, the teams were split between storing the energy in batteries or via a flywheel. For the 2011 season, all the teams have switched to batteries, however Porsche has taken the Williams designed flywheel setup and adapted it to a GT3 for racing. The idea is that for a few seconds(7sec per lap in F1), the driver would have an extra 80hp available at the push of a button. F1 does it all through the rear wheels, however Porsche went a different route. Not being restricted by how much they could use the system a lap, they basically made their RR GT3 a AWD monster coming out of every hard corner. They recover energy under braking, use it on corner exit, and because its all on the front wheels they can take advantage of AWD and get on the throttle sooner.
Thats about where my knowledge ends and i start asking for help.
So how could we adapt this to a 818?
I'd imagine we would have two motors(each front wheel), a battery pack, and a way to control it all. What else would be needed?
Could the hub mounted motors provide the power and harvest the energy? I'm pretty sure the answer is yes, but i don't know how.
Since the power would only need to be stored for a few seconds(as little as 10secs, however 30secs would be ideal), how much battery would we need? Size? Weight? Cost?
I have a bunch of other questions, but depending on the answers to the above questions they might be irrelivant. I would be looking to use the 818 in tarmac rallies, we have two in Canada, and the roads are usually less than ideal with some sections having gravel on the road. So AWD might just be enough to keep me out of the ditch. Any help would be great, thanks!
I've only just started googling the idea, but there seems to be a lot of EV savy people on these fourms so i thought i'd see if there was any interest in playing out my idea. Or shooting it down and saving me time(most likely).
The only KERS systems i know of are the ones developed for F1. For the 2009 race year, the teams were split between storing the energy in batteries or via a flywheel. For the 2011 season, all the teams have switched to batteries, however Porsche has taken the Williams designed flywheel setup and adapted it to a GT3 for racing. The idea is that for a few seconds(7sec per lap in F1), the driver would have an extra 80hp available at the push of a button. F1 does it all through the rear wheels, however Porsche went a different route. Not being restricted by how much they could use the system a lap, they basically made their RR GT3 a AWD monster coming out of every hard corner. They recover energy under braking, use it on corner exit, and because its all on the front wheels they can take advantage of AWD and get on the throttle sooner.
Thats about where my knowledge ends and i start asking for help.
So how could we adapt this to a 818?
I'd imagine we would have two motors(each front wheel), a battery pack, and a way to control it all. What else would be needed?
Could the hub mounted motors provide the power and harvest the energy? I'm pretty sure the answer is yes, but i don't know how.
Since the power would only need to be stored for a few seconds(as little as 10secs, however 30secs would be ideal), how much battery would we need? Size? Weight? Cost?
I have a bunch of other questions, but depending on the answers to the above questions they might be irrelivant. I would be looking to use the 818 in tarmac rallies, we have two in Canada, and the roads are usually less than ideal with some sections having gravel on the road. So AWD might just be enough to keep me out of the ditch. Any help would be great, thanks!