DMU user instructions.

Wheeltappers have developed the DMU sound files to be as prototypical as possible.
We do however appreciate that this will not satisfy everyones needs.
The idea is to try and match the increase in engine sounds to the scale speed of the DMU.
Typically the first generation DMU classes use a gear change system, the change into second gear being around 14-18 mph. The change into third around 25-28 mph. and into the forth gear at over 40 mph.
To achieve this it can take some distance to get up to a good running speed.

We have developed a gear change function to make the driving more interactive.
A normal drive option is also available.
F7 is the gear change function button.
Best driven by full giving the DMU or DPU full acceleration and as the unit reaches a scale speed of around 14mph it will not go any faster until you change gear by pressing F7 once to take it out off gear then F7 again to move it into the next gear.
You can delay the time between out off gear and into gear as long as you like as the unit will not go any faster until in gear.
If you only want to go half the max speed or any other speed do not take the throttle up to max and only change the number of gears until you reach your desired speed.

To brake reduce the throttle to zero and use F5 brakes to slow the unit to a halt, best to toggle F5 off and on to get the best results.
More information below.

Some of the features with the DMU's are as follows.
The cold start on some DMU's are from out side of the units.
Therefore you will typically get the cold start engine starting then the second engine.
The driver then gets into the cab & turns the cab light on.
The next time the engine is started if the power has not been turned off or the locomotive removed from the tracks will be from inside the cab of the DMU.
Once started and ready to depart the Guard will blow his whistle and then get aboard and close the guards door.
He will then give the driver the 'Right of way' buzzers and the driver will acknowledge, put the DMU into gear and increase the throttle giving a toot on the horn just before it pulls away.
To slow the DMU down you need to reduce the throttle to zero and keep toggling the brake function, normally F5.
This will slow the locomotive to a stand still.
The longer F5 is on the longer the braking application is applied and the quicker the DMU will slow.
When stopped you can vent the vacuum with F18.
When standing for some time the vacuum will need to be increased F8.

When shutting down the driver can either leave the cab closing the door behind him or apply the hand brake before leaving.

We are always on the lookout for ideas as to what to add to our sound decoders and are always adding new locomotives to our list.
If you do not see what you are looking for please
email us.
From the Wheeltappers DCC sounds team.