Reed switch conversion for 4 chuffs...

Hi Larry,

 

Here's a photo of the magnets and reed switch on the trailing truck wheels. What's the item number on the engine your installing this on.If you install the reed switch on the tender wheels

you will have to run wires from the tender to the engine. This method eliminates the running of the wires.

 

Thanks,

Alex

Thanks, Alex.  It is going on a Lionel 18056 Hudson.  I guess it is synched up then with the puffing smoke?

Thanks again.

Larry,

 

This engine you're installing the reed switch on, seems to get it's  puff mechanically

from the side rod which then hits a lever. This lever then pushes a piston and a spring which will give you the puffs out of the smoke unit. So your chuffs won't be able to match your puffs. The only way to match the puffs and chuffs in this engine is if it has a cam between the drive wheels  that you can add lobes to it, to create 4 puffs and 4 chuffs. I looked up the parts list and i can't find a cherry switch or a cam, you can still create 4 chuffs with a reed switch and two magnets on the trailing truck wheels. But it won't match.

 

The only other way to create matching chuffs and puffs is by installing a fan driven smoke unit

and then add Henning's / John's super chuffer.

 

Alex

Thanks, Alex; I should have elaborated.  Sorry.  Yes, I am having a Timko motor installed as well as an MTH smoke unit + John's super chuffer.  I really wish the reed switch could be concealed within the boiler but beggars can't be choosers!

Larry,

 

I just took another look at the parts diagram of your engine, there does seem to be a cherry switch from what i can see, so if there's a cherry switch it has to be activated by some kind of cam. if this is the case you won't need a reed switch, you can just build up lobes on the cam which hits the cherry switch and gets 4 chuffs that way. Here's a picture of the cherry switch

Alex is the "king" when it comes to doing these conversions.  I always enjoy seeing his videos when he gets one completed. 

 

Alan

Hi.  I failed to see this post earlier.  I am doing a 4 chuff conversion.  Could you please tell me where you obtained the reed switch and magnets and part numbers?  Many thanks.  BTW, Alex provided a great explanation for me.

Hi Pennsynut,

 

  You can get the magnets and reed switch from, Box car Bill. Modern toy train parts

 

alex

 

 

I get mine at Digikey and K&J Magnetics.

 

Depending on the space available between the wheel and the frame, I recommend either the D201-N52 or the D21B-N52.  One is thinner and may work where the thicker one doesn't.  You want the magnet within the width of a dime to the travel of the magnets and offset to one side so as not to get double chuffs.  I use this reed switch: MITI-3V1-6-12.5.