I’ve read some of the posts regarding the whistle motors that got me to the point where I’ve identified the relay as the reason the motor wasn’t running. Many thanks to the forum members. However, even when the motor runs, there is no whistle sound. Can anyone point me in the right direction on that one?
I appreciate any help.
I’m no expert here by any means, so take this with a grain of salt as the saying goes. First, I assume you replaced-repared the relay. If so is the motor running up to speed and secondly is the motor running in the right direction? The motor drives a fan which blowes air through the whistle. If the motor leads were reattached wrong the motor will run backwards and not force the air through the whistle. My thoughts, Ken Sorry, I reread your post, and realise you didn’t do any repairs yet. Ok, first part still stands. Is the motor running up to speed and the right direction? Next thing to look for is to see if the air passages are clear in the whistle, no dead bugs, cob webs, etc. Ken
If the motor is running make sure the fan blades are turning.A long shot but no fan no whistle. Make sure the air is not leaking out around the seam of the chamber.
I assume the fan blades are turning and the air hole on the whistle chamber is not blocked. If so, vary the track voltage to the motor. If the track voltage is too low, the whistle will not sound. Likewise, I have at least on tender whistle that will not sound if the voltage is too high.
Remember, postwar whistles ONLY sound good to postwar collectors/operators. To sane people, postwar whistles sound awful.
Earl
First make sure the motor is turning in the proper direction (clockwise as viewed from the bottom - looking at the fan blades, counterclockwise as viewed looking down at the brushplate). Clean all fibers/hair etc. off the blades.
Now, is the motor up to speed? This is hard to describe without seeing the motor in person, but it should be moving air about as fast as a good brisk exhale - which brings us to the next test…
You can test the whistle chambers by blowing through the botton of the housing with no power to the motor. You should get a good two-tone whistle doing this, keep the exhaust holes clear(fingers off!) & unblocked.
If you can’t get tone(s) out of the chamber, the orifices may be blocked by carpet fibers, pet hair, spider webs. On the plastic housing chambers, you can remove the motor for cleaning & partial inspection, on all, you can use compressed air to clear the chambers. A quick evap. contact cleaner (like CRC) with a spray tube can be used to blast away stuck grime.
Sometimes, the housing is warped or bent and will not make a good enough seal to provide a good path for the air. Replacement is the fix in this case.
Rob