Copy that Tim👍
Please start a Build Blog.
I'm sure many of us with 1/32 - 1/35 ELCOs would like to know how you get on.
Not least me😉
All the best, Doug 😎

Many thanks for the reply Doug I'll take your advice. I have lots of other projects on the go but saw this old Lindberg PT 109 for sale cheap as it had been partly made. An impulse purchase. I don't want to spend too much time or money on it but it is an ideal project to get the grandkids interested in the hobby.
Best wishes Tim

Hi Tim,
I suggest you start with something like a pair of 385 size motors.
They are 5 pole so run nice and smooth, especially when starting, and are efficient so not too current hungry. If you still think she's too fast for the grandkiddies you could always use the 'End Point' setting on the TX to limit the throttle travel, e.g. 75-80%, or whatever seems reasonable to you. You could then reset it to 100% when you wanted to unleash the 'full fury' and have some fun😉
Check out MFA or Cornwall Model Boats for the motors.
https://www.cornwallmodelboats.co.uk/acatalog/mfa-re385.html#SID=2304
For the ESC an Mtroniks Viper Marine 10 or 15 would do nicely. I have a few Marine 10s, never had any trouble with 'em.
https://www.cornwallmodelboats.co.uk/acatalog/Mtroniks-marine-Speed-Controllers.html
Oh, and don't forget the Motor (spark) suppression kit😉
https://www.cornwallmodelboats.co.uk/acatalog/motor_suppression.html

I have a 1/32 PTB made of wood, much heavier than a plastic version I guess. When I bought it it was fitted with two 2200Kv brushless. The chap I bought it from said he was selling cos it was much too quick for him! We'll see. It's currently under refit (like many of my boats🤔).
Hope this helps🤞
Cheers, Doug 😎