Originally Posted by al222
i am new to the r/c world and need some advice on which motor i should purchase
i am currently building an hpi r40
any info would really help
It will depend on where you are racing (if you will race), how much you want to spend and what parts your hobby shop carry.
If you are on a budget,
Take a look at the RB TJ10 (junior), Novarossi TS1 or OS XZ (stock)
If not, you can probably use a Novarossi Flash, Novarossi 353, RB T10 or Max XXL3.
That is assuming that you need a SG shaft engine.