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Author Topic: Mono 1 and Mono 2 race set up  (Read 145 times)

Andy TA

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Mono 1 and Mono 2 race set up
« on: May 09, 2019, 12:38:21 PM »

Ok Noob question alert !! Please be gentle with me

I have a couple of FE monos that I am about to start building and am collecting stuff for. I would like (eventually) like to race them (at club level) and obviously want to start with something that is heading towards a race set up.

I have searched high and low for info on set up and motors and things, put together loads of kv/rpm spreadsheets and interrogated FE people until their ears bled and am still none the wiser.

Please help before I give up and set light to it all and dance around the flames with a pair of pants on my head.

Mono 1
620mm hull length
3s

Mono 2
800mm hull length
4s

So lets start with a motor

On 3s the kv x v thing comes out at
38850 rpm with a 3500v motor
At 80% efficiency that gives around 31000 rpm

On 4s the kv x v thing comes out at
38924 rpm with a 2630kv motor
At 80% efficiency that gives around 31000 rpm


All of these seem OK for RPM according to the web people and their calculations

Chatting to the FE people it seems that they are all running 2500kv or less at 3s and 2200kv at 4s

They all seem to have pretty fast boats that run the required 5 mins for a race

What am I missing here? Why are my calcs so much different to theirs?

Andy
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