Elmbridge Model Club

Shafts – a user’s guide


As boaters we all have a first hand knowledge of transferring motive power to the propeller in some

way or another. However, in the specialist field of racing boats there have been a few refinements

to the well-tried methods and these are described in this article. In the main there are two types of

power transmission: first by a flexible shaft and second by a rigid shaft, but now there are relatively

new hybrid systems which might be of interest to boat builders.


Please click the link below to download a PDF document generously provided by one of our members.


Shafts Doc

Cooling systems


Most model power boats require a cooling system of some sort to take away excess heat from their

power units so that they can run under optimum conditions. The common media used for cooling

are water and air.


Please click the link below to download a PDF document generously provided by one of our members.


Cooling Systems Doc

Throttle


The throttle linkage associated with a petrol, or glow, engine transfers the intended servo response

to the carburettor. The design challenge is that the rotational axis of the carburettor throttle arm is

sometimes not in a simple orientation with respect to the axis of the servo arm.


Throttle Doc

Water


Model powerboats depend on water in one way or another. However, sometimes water can be too

much of a good thing.


Please click the link below to download a PDF document generously provided by one of our members.


Water Doc