Hey guys,
I am about to start building an open-wheel style car based on an old FSAE chassis I found off marketplace. What features should I really be focusing on?
I am trying to ensure that each of the systems can be easily serviceable/upgradable so I can easily swap parts, I'm currently working on the drivetrain setup where I'm planning on using a 120kW electric motor along with a 7.2kW battery setup, maybe more if I manage to scrounge up some additional funds. And the next thing on my list is going to be a steering setup.
I am planning on using it for time attacks and endurance-style races.
I think most time attack rules don't allow open wheel cars.
kb58
UltraDork
8/3/24 11:40 a.m.
First step is reading up on the rules for whatever events you want to run it in.
Any chance you could grab an e-Golf from Copart and steal the entire powertrain. I fully understand the battery might be too large for you to work with, but it's an incredibly reliable turn key package that I'll bet you could buy very cheaply and have all the pieces you need.
Since you mentioned endurance events, I would encourage you to double check your math for the battery. Seems that 7.2 kwhr battery would last 0.06 hours at 120kW running. Might finish 4 autocross runs doing that.
In reply to hollynicholas :
A F600 car would be a good starting place, they have wide sidepods that would give you more room for batteries and such. An obsolete one would start well sub5k. There were some super old ones posted here recently for 2k
I considered an EV swap for my F-mod but it was too expensive for me.
Lithium titanate batteries are your friend.
Pros:
1. Very fast recharge.
2. 10C discharge rate.
3. Light weight.
4. Easy packaging.
Cons:
1. Cost.
2. Some sanctioning bodies may not allow EVs for safety reasons.
3. Cost.
4. Complexity.
5. Cost.
6. Motor selection is critical to balance both acceleration and top speed. You want to avoid a transmission.
7. Charging. Even though it charges fast, infrastructrue may not be available.
