Yeah, the bigger wheels definitely help for stability but it’s still scary
What did you use for a mount? I was thinking about a RAM mount.
On my 2000, where it was mounted under the dash, my sevcon would overheat on hot days in SD. Usually when hill climbing, it would rather quickly reduce power and then stop. I actually bought a heat sink that I was going to try to install and potentially look to relocate the controller to the empty battery tray under the hood… But then bought the 2016 and sold the 2000. Finally said enough to throwing $$ and time into that old car.
I think where it’s mounted, with the bottom facing forward, it would get good airflow. My plan was just to drive it until there was a issue. I’m also not running as high voltage as you.
Found the cutback curve in the manual the first time this happened to me.
Thunderstruck has them if you don’t want to mess with custom building one. ThunderStruck Motors - Heatsinks
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Looks like you have 20 degrees before any cutback - maybe just a little more airflow to the controller somehow, air scoops, air tubes to vent around the plate?
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… and another 18 before you are pushing it home.
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Great thanks, seems like The heat sink is a good idea since I believe temp would be higher if carrying 4 ppl, but now it can wait since I wouldn’t be driving aggressively when having more people and the hottest days are gone.
I’m running a heat sink on mine. The wall where my controller is mounted has a cutout. I bought this:
Cut a fin or two off so it fit through the hole, used a thermal pad (paste is too messy)
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Thanks Max, I didn’t see it before
Not sure if this is still the right group but this is the throttle fault I’m getting.
17:39:13. Node 1 fault set (0x4981, Throttle Fault, data 0x00 0x00 0x00). CANopen Error Code:
Potential Cause: Throttle Value (0x2620,0) is greater than %20 at powerup.
Suggested Action: Release throttle and re-apply. Check wiring.
It happens 2 or 3 times in an hour of driving. Any suggestions on a fix would be great.
Thanks.
This is the exact same error that I’ve been chasing. Usually would happen around 3500 rpm and searching for top end. Don’t believe it’s rpm related. Still trying to pinpoint the exact issue but are close on a workaround. Thinking something throttle voltage related. @Inwo is working up some options to test
For me, it is always on acceleration. The light turns green I accelerate up to 25 mph or so then it faults out and it feels like it is costing and not accelerating and then you realize what is happening and cycle the key and then the direction then you are up and running again and you are good to go the rest of the trip. It is a tuff one to nail down because it seems pretty random. I’ll see if I can pay a little more attention to the computer while I’m driving and see if I can chase it down a little closer.
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Yup… Same problem. On acceleration and I found around 3500 rpms. Also found that I didn’t need to cycle the key. Just shift into neutral, back into drive, and keep going. The 3500 was inconsistent e.g happen only a few times per trip, give or take some speed but usually accelerating. I could almost always get it to fault at the top end around 38 mph. Didn’t matter if I was going up or downhill.
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Let’s start over. What car is this in? Reading fault from the Gem ecm?
High voltage conversion? You had a classic Gem too, no?
This is the 2 door blue one 80 volt with the Sevcon 6 I believe. I also have the Classic with the Chevy Volt Batteries and AC Conversion. The classic works perfectly. It is my New one giving me the problems.
Read the fault on the dash?
That’s what surprised me. I didn’t realize dashboard displayed generic Sevcon faults.
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