ORIGINAL: bikenewby
Hi,
I've just got the 42'' Deep V hull from Hobbyking (link below) and wondor what would be a good matched for brushless motor?
I'll go with Feigao 580XL size but still considering if I should get 1300KV, 1000KV or 750KV? The prop size is around 2.12'' (Hyperformance 240 size).
What would be a matched KV if I run 6 cells? and what's about 8 cells?
Thanks in advance.
http://www.hobbyking.com/hobbyking/s...dproduct=15235
If this is not too late. I would not go any higher than 1000kv. 750kv would almost be a better choice for just fun running on 8 cell LiPo.
hi can you tell me how to work out what size flex cable to use.
thanks very much
ps great thread very informative thanks
How much power do you plan to run? Flex cable decision depends on the amount of power or better yet the amount of torque placed on the driveline.
Here is a rough chart for size vs power for fun run type boats. This is not set in stone for example I have run smaller cable on some 2 cell hulls and currently run .187" for a 4s hull.
.125" for hulls running 2 cell LiPo
.150" for hulls running 4 cell LiPo
.187" for hulls running 6 / 8 cell LiPo
.250" for hulls running 8 / 10+ cell LiPo
Getting a little technical, A 1000W system running at 40 000RPM will not need as thick of a flex cable vs one running 1000W at 20 000RPM. At a lower RPM the same amount of wattage will produce more twisting torque on the flex cable.
Ryan