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- #41
After 19 logged race days with this chassis, I started running into electrical problems where the wiring to the 5mm bullets on the battery posts would become un-soldered during a race. The excess heat would cause the in-line connects to melt the plastic of the battery case making it unsafe to continue using the same battery:
The cost to replace the battery was going to be around $160+ after shipping so I decided to go a different route and have installed the following electronics for just under $120 shipped total:
Although I probably could've fixed the issue by replacing the worn 5mm bullets with a fresh set, I really didn't like the idea of pushing too much current through on 2S and decided that 3S would be more efficient to help reduce temps and more importantly, extend my run times. I have since ordered the following product which I am told should extend the life of my bullets so they won't tarnish which will prevent the excessive resistance like what was happening to me:
It's worth noting that the 2S pack before weighs only 324g and the 3S pack that I just bought weighs 360g where the extra 36g has made a noticeable improvement in the handling where the truck is more planted and can accelerate faster on corner exit, I was able to drop 0.3 sec off my fast lap time (40 sec hot lap) after swapping out these electronics, and the top speed/acceleration are about the same as before.
Motor Temps:
4300KV@2S = 160°F after 10 min
2500KV@3S = 135°F after 10 min
It really is a no-brainer that I made the right decision to switch over to 3S
I've updated my current setup on the OP as well:
The cost to replace the battery was going to be around $160+ after shipping so I decided to go a different route and have installed the following electronics for just under $120 shipped total:
- HobbyStar Pro4, 4-Pole Brushless Sensored 4x4 SCT Motor - 2500KV
- HobbyStar 5200mAh 11.1V, 3S 50C Hardcase LiPo Battery
Although I probably could've fixed the issue by replacing the worn 5mm bullets with a fresh set, I really didn't like the idea of pushing too much current through on 2S and decided that 3S would be more efficient to help reduce temps and more importantly, extend my run times. I have since ordered the following product which I am told should extend the life of my bullets so they won't tarnish which will prevent the excessive resistance like what was happening to me:
It's worth noting that the 2S pack before weighs only 324g and the 3S pack that I just bought weighs 360g where the extra 36g has made a noticeable improvement in the handling where the truck is more planted and can accelerate faster on corner exit, I was able to drop 0.3 sec off my fast lap time (40 sec hot lap) after swapping out these electronics, and the top speed/acceleration are about the same as before.
Motor Temps:
4300KV@2S = 160°F after 10 min
2500KV@3S = 135°F after 10 min
It really is a no-brainer that I made the right decision to switch over to 3S
I've updated my current setup on the OP as well:
Last edited: