Skip to main content

Does anyone know if the bubble tube/bulb is the same for the MTH 30-9027 and the Lionel #455 Oil Derrick?

We have one on the Eagle Scout/Museum layout restoration that needs one. I connected the power last weekend and it runs, but no bubble bulb.

I would assume it's the MTH version as everything else that was on the layout originally was an MTH product.

Also, do you know where I can get the bubble bulb?

Thanks. 

Original Post

Replies sorted oldest to newest

There's really nothing special about a bulb for heating a bubble tube in any of the bubble tube accessories by any of the manufacturers.  They're common bulbs.

That said, depending on the construction and materials (e.g., plastic, metal, combination), particularly around the bulb-tube area, you will want a bulb that's hot enough at a modest voltage to create the bubbles in the tube, but not so hot as to deform/melt surrounding plastic components.  Also, overheating the bulb(too high a voltage vs. its rating) will shorten its life.

I believe a #363 14-volt bayonet base bulb is the common recommendation for the postwar 455.  I know there have been later versions by Lionel, and some copies by others, some of which my have a different recommended bulb size, rating, base.  Here's where taking a Magic Marker or some such indelible pen and writing the bulb number on the bottom of the accessory (Why don't the manufacturers do this?......rhetorical, I know.) for future reference is a handy thing to do.

Heat transfer from the bulb to the tube is important.  There is nothing wrong with the bulb and tube being in contact with each other to help with this.  In fact, it was shown to me the other day that an early U.S. patent (1944, #2,353063) drawing for the bubble-tube lamp (Christmas style) shows the bulb and tube in contact with each other....not always achieved in the accessory.

Can't say for sure that one manufacturer's bubble-tube is common to another's.  It's all the same technology, though.  Others may have info/experience on this.

FWIW, always....

KD

Last edited by dkdkrd

yes, the bubble tube is missing. I didn't even have time to take the cover to know that I need a "heater" bulb also.

So, I need a #455-47 and a GE#363 then, correct?  Which color tube looks better, the yellow or orange yellow?

Of course, the GE brand isn't easy to find. Can I use any make #363 for the good heat?

Thanks.

 

Attachments

Images (1)
  • 455-47
Train_Geek posted:

Find a used set of bubble lights for a christmas tree and use an orange bubble tube from one of the lights.  You'll end up with lots of spares.

Andy

I'll keep my eye out. Do you know if they are the same diameter as the "official" part? There's a pump arm that rides over it. Anyway, I'll have to get the official part to get it operating now. Thanks for the input.

So, this morning...nothing better to do...I grabbed my vernier caliper and checked 4 different bubble-tube accessories...by Lionel (PW and modern editions) and MTH.

All of them had tube diameters within 0.020" of each other...around 0.40" diameter.  I didn't compare lengths, but I'm sure they're all close.  

The last bubble-tube Christmas lights I had my hands on was around 1949....on our balsam tree in the living room.  Dad finally let me help hang the Mazda and Noma lights on the tree......one of those 'coming of age' memories.  Of course, after the tree was decorated there was THE BIG FINALE!!!....carrying Dad's 366W set (stored in an old Electrolux 'Super Chief' vacuum cleaner box) down from the attic, carefully, lovingly, removing each car, the engine, the tender from its cloth wrappings, setting up the circle of track, the gateman, the antiquated transformer/rheostat/whistle controller.....and watching it come to life.  Hoo boy!   And that whistle!......

FWIW, always....

KD

Last edited by dkdkrd

Add Reply

Post
×
×
×
×
Link copied to your clipboard.
×
×