Hi guys.
I serviced my new to me 2426W tender last night and gave it a trial whistle last night. I am using a PW ZW for track power, with an updated whistle rectifier that I had installed a few years back.
When using the whistle control, the relay will only close momentarily then fall back to open position. If I close the contacts manually the whistle works fine. I tried every air whistled tender that I own and they all work just fine. Installed new brushes and lubed the motor prior to trying the tender. I’m at a loss……
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At this point, I myself am so sick and tired of the relay in my whistle tender that I simply want to bypass it entirely. Try bending the contacts so that they are closer.
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Thanks. The points were a little farther apart than I was comfortable with, so I bent them closer and cleaned them with 100 grit. Still the same. The relay reacts smartly for about 1/2 second and then just offs itself. Weird.
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Most curious. I’d expect that this is definitely the relay causing the problem. Have you tried dousing the whole thing in electrical contact cleaner?
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Welp, the relays are cheap enough, so I have one coming from ebay and we’ll see. 
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Sure. If it keeps giving you trouble, then you could try replacing it with a circuit board (blasphemy, I know). They’re pretty cheap when you get 'em from Trainz.com.
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Check out this video from the late Jim Barrett, it might help.
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Hey, thanks!
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