1515 2Y on 6S???

[Patrick]

Originally Posted by jzemaxx

Thinking about trying this as a test. I am running now the MMM with a 1515 1Y (2200KV) on 3S 5000mah (10000K total) parallel. I am getting around 23mins with that setup and runs fairly cool. I am thinking about dropping down to the 1515 2Y (1100KV) and going 6S 5000mah. Would I gain anything from this swap? I am thinking I might gain some runtime and drop in heat......it will be geared for the same 36mph. I am trying to get as close to 30mins as possible without a swap, but weight is a major concern. Our races keep getting longer and the pro classes are minimum 30mins and I their is a 45min race coming up later this summer. I would like to keep it down to 1 stop and still have some breathing room.

I've tried racing 3s on the 1515 1y as well. I was probably geared a couple of mph's slower than you, but I was pretty happy with it, everything ran really cool after 15 mins. 15mins is the longest I've ran it like that, but I used ~6000mah out of 9800 total, which means 24-25min max.
When I use that motor on 4s 4900 the most runtime I will get from it is about 12mins. Most of the guys I race with are using about the amount of power as mine, sometimes more.
I used to race 5s 4900mah with the 1515 2.5d, and that would get between 16 and 18min racing.
I haven't done an actual race with 6s in it, but geared to the same speed as my 4 and 5s setups, I would only expect 22 or 23 min.
From all the setups I've used and all the setups I've raced against I just don't see much more than about 25mins possible in a truggy, on 6s 5000, in a race, with a good driver, unless your car is somehow super light or it's geared to be super slow. For bashing sure I could do 30mins plus, but I've always found racing runtime is always less.

[jzemaxx]

Originally Posted by Patrick

I've tried racing 3s on the 1515 1y as well. I was probably geared a couple of mph's slower than you, but I was pretty happy with it, everything ran really cool after 15 mins. 15mins is the longest I've ran it like that, but I used ~6000mah out of 9800 total, which means 24-25min max.
When I use that motor on 4s 4900 the most runtime I will get from it is about 12mins. Most of the guys I race with are using about the amount of power as mine, sometimes more.
I used to race 5s 4900mah with the 1515 2.5d, and that would get between 16 and 18min racing.
I haven't done an actual race with 6s in it, but geared to the same speed as my 4 and 5s setups, I would only expect 22 or 23 min.
From all the setups I've used and all the setups I've raced against I just don't see much more than about 25mins possible in a truggy, on 6s 5000, in a race, with a good driver, unless your car is somehow super light or it's geared to be super slow. For bashing sure I could do 30mins plus, but I've always found racing runtime is always less.

Yeah looking at this more and more, it looks like 3S is still the way for me to stay. Maybe just look for larger MAH batts that will fit and keep going.

[zeropointbug]

I still think you are better off using 6s and practice some throttle control... afterall it takes X amount of power to get the truck around the track or bashing for a given driving style... and higher voltage will do that better.