The BD Bat 110 is designed to get the best performance and thrust to weight ratio from a 1s LiPo/LiHv battery.

This kit includes the 1.5mm thick chassis, the 2mm thick chassis will add just over 1.5g.

The BD Bat is heavily inspired by the FulSpeed Bat-100, in fact, you can build the components straight across, provided the motor wires are long enough?! Also consider that the frame has been designed for the larger spaced motor mounts, so may be incompatible with the smaller mounting of the RacerStar motors.

I have squashed the streched X format slightly, (despite the apperance the motors are almost exactly positioned for a true X) to get less prop in the FPV image. Also the arms have been extended to support use with 65mm (Parrot) and 66mm (Eachine) props to maximize the possible thrust from the motors. 

I have had a bad experience with my SunnySky 0705 brushless motors, so I would suggest trying the HappyModel 0706. Thanks to Konrad for the thrust data showing the 0706 producing almost 5g more thrust, at 0.2A less draw, than the 0705 with 56mm props. Bear in mind that the review of the 0706 also mentions bad vibrations, but only when using shorter props, however build quality might not be great with these motors and they use bushes rather than the bearings used by SunnySky. Konrad does not have 65 and 66mm props to provide data on these motors, but I have found a youtube video showing 65mm KingKong props producing almost 5g more thrust than 56mm Ladybirds on the racerstar 0703 10000kV which are smaller motors with lower kV.

SunnySky 0705 review

HappyModel 0706 review

RacerStar 0703 thrust test video

I believe that the larger 0706 motors will suit longer props better and might even show more than the 5g extra thrust from the 0703 racerstar's. However if we keep to that 5g figure and add it to the 59g given in Konrad's 0706 thrust test we get 64g per motor x 4 = 256g (static) thrust. On a model with an AUW (All Up Weight) of about 40g - 45g (depending on battery and chassis thickness), gives us a thrust to weight ratio of 6.4:1 - 5.6:1, I don't think you will find anything close to that with any other 1S model...?

Recommended parts -

450mAh - 600mAh 1s LiPo/LiHv batteries

The following are affiliated links which will generate me some small commission, at no additional cost to you!

Teeny 1s  F4 FC & 6A ESC - $26.15

HappyModel 0706 Brushless motor - $27.76 for 4

TurboWing AIO 700TVL FPV Camera & 25mW VTX /w OSD support - $17.89

Eachine 66mm props - $8.99 (10 pairs / 5 sets)

KingKong 65mm props - $4.99 (10 pairs / 5 sets)

Parrot 65mm props - $1.99 (2 pairs / 1 set)