Rate or Slate my build plan

[PhilF]

Hello,

I've got planned an 250 FPV racer, on a slight budget. I'm running the DX7 currently. Here is everything tabulated in a delightful format:

https://docs.google.com/spreadsheets/d/1jaP1tFlPJNKcjCzqYBkd54vw_kVUtsqdHHLQqOH95hU/edit?usp=sharing

Cheers for any input!

Phil

 

[holtneil]

Hi Phil , will be a nice racing quad ,I changed it to 250 lol ( from 230), all great mate , A few questions for you , why are you having 2 sets of leads with XT60 you just need the Male XT60 lead and plug , if you get this your have the lead ready
http://www.hobbyking.com/hobbyking/...d_Lite_UK_Warehouse_.html?strSearch=power dis
or this will be lighter
http://www.hobbyking.com/hobbyking/...Warehouse_.html?strSearch=xt60 breakout cable
Liner BECs can get hot switching BEC is better ,but they dont do switching in them so see how they go
The only thing on the frame I dont like is the landing legs they are going to get ripped off in a crash and racing quads crash a lot , can you get spare ones , if not get some carbon sheet a so you can cut out some spare legs , also make sure you have loads of props you go through loads of these
BUT other than that GO FOR IT GREAT BUILD LIST

 

[PhilF]

Cheers man. How much of an issue are we talking re. Linear vs Switching BECs? (strangely, haven't come across this yet, although there's a lot about it out there). The xt60 harness is a quality plan, was going to wire up my own, didn't know these existed.

Was curious about the power to weight as well. I've seen builds where people talk about 7:1 thrust to weight ratios, I'm only hitting about 4:1, without camera gear. Is this good enough?

Cheers, Phil

 

[holtneil]

Hi Phil, for a racing 250 quad you want a lot of power as this will make it fast and your win more races, the faster it is the harder to fly
Liner BECs give out a constant power and if your not using the power fully it makes heat , switching BECs do what it says on the tin power on power off power on etc so runs cools , but not all ESC have SBEC, you can always go octo ESC with NO BEC then fit a nice powerful switching BEC to run the systems

 

[GJH105775]

If you want a really fast quadcopter this guy uses 6''x4.5 props cut down to 5''.

NOTE: The video is real time.