Hi Gang,
I bought a bait boat from eBay with a view to making some mods, but I am struggling with the motor. I have successfully done all the electrics including a 2.4ghz conversion using my old hitech focus 6, built a pic based rc switch for the headlight. built a pic based battery monitor circuit with rgb led. I have also added an Action P80 speed controller with a P95 fuse board. Finally I replaced all the navigation leds and added a reed switch to the bait paddle, so I know when there has been a successful bait drop. All the electrics are working great.
The part I am struggling with is the part I thought would be easy.(
funny how that always happens). The plan was to replace the horrible split ring joining the motor/shaft with a nice quiet coupling. So after some research I got a heavy duty one from MMB. The problem being the boat was designed for the split ring, and had plastic brackets that the motor sat on, held in place by a clamp. I had to move the motor back a couple of cms to accommodate the new coupling which meant the motor sat up at a nasty angle. So i cut the front bracket off back to the hull (see pics below). The plan was to simply bed the motor in some silicone, but this didn't work as even with no silicone at the back of the motor, it sits up throwing the alignment out. The original motor according to the manual is a 755, but I can find no info other than a replacment one
here.. It has a 5mm shaft, is about 42mm dia and about 60-70mm long. It spins the 50mm prop on dry dock at about 6800 rpm and draws 2.2A.
Mount points with front one cut away.
Original motor in place with new coupling.
Anyway I have ordered a
550 motor which is a bit smaller diameter and should allow some packing/padding or silicone underneath. I am just looking for the best suggestions for mounting it, making the motor/boat as quiet as possible I tried wrapping the old motor in grease proof paper but the silicone still stuck to it. What do you guys use? Any suggestions welcome.
On top of that I noticed the prop shaft is bent at the prop end, but I think Mark is going to sort me out a new one as I seem to have a rather non standard 3mm threaded prop.
Thanks in advance,
Les