As I have mentioned a few times previously in my videos and posts, there are two elements holding me back, distance and finances. Finances makes sense, I am a college student working to pay off loans and other bills, so my hobbies have to get lower priority in terms of funding. But distance might sound a bit odd. I am not sure if I have mentioned this much, but I go to school at the Rochester Institute of Tech in Rochester, New York. My home and family are located in central Connecticut though, about 350 miles away. This is definitely the worse of the two roadblocks, as it costs about $80-100 in gas just to go home to work on it, and often times that cost is more than the part I may have bought to install.
Despite these blocks, I have been doing some important research into this project. My plan is to have most of the components bought before I go home for my month long winter break. Since I’ll have an entire month straight to work on it, uninterrupted, I believe progress should go quickly.
The X-Drive Dilemma
One of the major elements I was able to find out recently was regarding the AWD system on my bimmer. I have gotten a few comments asking what will happen when I remove the ECU, as this is when BMW began using computerized systems to control it’s X-Drive setup.
What I have discovered is that this change will not cripple the car. There are two possible outcomes from the removal of the head computer, either the AWD system will remain enabled at full power to each wheel all the time, or it will disable the front wheels all together and just send the power to the rear wheels. But thankfully both of these options are okay with me.
It would be nice to have the front wheels working, because New England winters can be rough, and it’s actually putting the extra 200 lbs to use. But if they aren’t being used, then the car may have a higher efficiency as the motor isn’t responsible for turning a whole other transfer case and set of wheels.
So now it’s just a matter of seeing what happens when we get to this point, either way, it should be a quick machine.
Is the Torque from the Motor Sufficient?
I got this question on a YouTube video recently, asking whether or not there will be enough torque at high speeds to sustain movement. So here’s the reason why I believe this should be okay, I am running this through a transmission.
If I am running this in 3rd gear (1:1.66), and I take into account the final drive ratio (1:3.23):
(1 : 1.66)*(1 : 3.23) = (1 : 5.36)
5.36 * 100 ft/lbs = 536.3 ft/lbs at the wheels in 3rd gear
That’s a much more reasonable number and I firmly believe this will propel the car at a decent clip.