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By Kyler
Put new fuel in this thing, new battery I can get it to turn over but want stay running it’ll try to run with starting fluid but shuts right back off what could the problem be?
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By gridlock
After three years, my Sector completely died. Something caused the hot wire under the seat from the charger to disintegrate, so the batteries weren't being charged. The batteries weren't charging 100% anymore, so decided to convert to lithium.
As most others have done, I went with 4-48v batteries in parallel, as I believe that will be plenty of amp-hours for my needs, but can always add more if needed. I went with LiTime wired CAN batteries and mounted their digital gauge on the dash above the current one, which fit perfectly. I didn't think the existing battery brackets worked well for the new batteries, so made my own out of aluminum L rails, which makes it much more secure (and saves a few more ounces :)). Since I wired them in a 'balanced' configuration, I had to make all new cables from 0/1 gauge wire and 8mm posts. I updated the DeltaQ charger to profile 233. Cleaned everything up (I must have vacuumed 20 pounds of dirt!), put it all together and... wham!
So far, it definitely is better than with the original AGM batteries. Sustains speed better going up hills, and seems to have plenty of reserve current. The difference in weight with 4 LiPo vs 8 AGM batteries surely doesn't hurt!
Thanks to everyone on this forum, but special shoutout to GNFO who was a big help.
A few questions:
In the 'any tips' thread, EVSupport mentioned reprogramming the Sevcon to reflect the new discharge curve of the lithium cells, but I didn't see any more info about that or how to do that. Is there any more info about that?
Have folks replaced the onboard 12v battery, and if so, with lithium? I'm not sure why there is a 12v battery; why didn't they just step down the current of the 48v system to provide power to accessories?
Is there a recommendation as far as charging with the lithium conversion? As far as I understand, it is better to let lithium batteries discharge somewhat (but not completely) than keep them charging all the time. What do you think?
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By Jamesshoop1
This was happening to me regularly with the original battery pack, I would drive a few yards and power cut to the motor, no error code, dash works, lights etc, just no drive. Brake lights not on so I don’t think it’s a switch thing. Sometimes it would go back to normal after a few day sitting in the barn. I ended up changing to lithium ion battery 100amp 48v and the problem completely went away for two months so I figured it was something worth the old battteries. Now it’s doing the same thing again, I’ve removed every main electrical connection, cleaned it good, and put it back together. Battery is at100 percent and good voltage. What is interesting is it doesn’t matter how much power I’m drawing, if I’m just creeping along in low or flooring it in high it stops after the same amount of time, about 7 seconds. If I let go of the acceleration right before the 7 seconds I can keep driving like that indefinitely but obviously that’s pretty annoying. Or if I switch immediately to reverse I can back up and go back to F without cycling the key. Has anyone else run into this? It really seems like a safety switch issue to me but unsure what else to check.
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By malenurse13
We've had the Predator 459cc on our American Landmaster TW450 for about one month now. And I've got to say, this has been a solid motor! My kids have really put the motor and the whole side-by-side to the test. But it's running great! The original motor was a Kohler ECH440 with 14hp.
We've had ice and snow all weekend. But we can feel the extra power with the Predator 459cc (15.8hp). Just wanted to let y'all know, if you're looking for something to replace your motor on the TW450... We considered the cheaper Predator 420. But I'm really glad we got the 459!
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