Sintra 700 Help!!

[Muddy]

G'day everyone

A mate of mine has given me a Sintra boat to fix.
It is a Sintra 700 twin power model; all I've found so far is they only seem to be available in Europe.
Anyhow, It has 2 x batteries, 2 x motors driving a single prop.
The micro switches are no good, but I do not trust the way it was wired in the first place. Does any one have some info as to the connection of the 3 x micro switches??
The throttle servo has a cam on the horn
Reverse uses 1 x switch, forward uses the other 2 x in combination.

Please help!!!
:(:(:(

[Muddy]

This is not my boat. It's a poverty pack that belongs to a basher mate. The motors are already in parallel, I am an old Auto electrician (and yes, I'm supposed to know how to hook the Bas%^&d up) but I gave away the trade in 1994. So forgive me if I'm rusty (like the bits in this boat).

All I need from the wider and more intelligent boating community is a tip on succesful re connection of the switches.

I don't need to be bogged down with racer terminology.
Thank you.

[bugfanatic]

This sounds just like the way MRC had their old early 90's Miss Bud wired except the Miss Bud didn't have reverse. The 2 forward microswitches are supposed to be wired so that the batteries are switched from parallel to series with series being for high speed & if I remember right the motors are wired in parallel. You can get replacement switches from McMaster-Carr part # 7779K63 www.mcmaster.com very cheap & they ship worldwide - buy a few extra. So, to recap, reverse has motors in parallel, batteries in parallel but reversed polarity. First forward microswitch has motors in parallel, batteries in parallel for good low speed grunt & 2nd switch has motors in parallel & batteries in series for dbl voltage speed. Hope that helps.

[Muddy]

OK, this much I'v'e worked out myself....reverse and forward, only need one or two batteries in PARALLEL.
I read too much into it thinking series/parallel. The forward switches are single throw, single pole (hence the need for 2 x to change motor polarity).
Reverse just connects motor negative, using the N/C of one of the forward switches to complete the positive side of the circuit. ( I knew the ol' sparky in me would come out eventually)

forwards is a reverse polarity set up ( like a power windows switch, duh!)
So if just one battery is used, same results. 2 x batteires (and 2 motors) is always better than one, right????

So, after throwing away lots of scrap paper, I have come up with this. Just so no one has the hassles I had.

[Muddy]

forgot the picture