Worm Gear Replacement

[Snowman]

That's what I'm worried about, but apart from one being plastic and the other brass, visibly (on a photo) I can't see any difference

If the plastic is "shiny" it might be a self-lubricating Delrin. That type of plastic is often used for (car) trucks/bogies, like those offered on this side of the pond by Kadee or Micro-Trains.

Failing that, other plastics can probably be lubricated with good success using automotive lithium grease or a teflon type gel. Of course brass does work too, as has been suggested.

It's dyslexic being hell

Surely you mean "Lysdexic." As I'm know you sure.

 

[Smudge617]

T

If the plastic is "shiny" it might be a self-lubricating Delrin. That type of plastic is often used for (car) trucks/bogies, like those offered on this side of the pond by Kadee or Micro-Trains.

Failing that, other plastics can probably be lubricated with good success using automotive lithium grease or a teflon type gel. Of course brass does work too, as has been suggested.

Surely you mean "Lysdexic."

Thank's, I've located some brass worm gears, so I'll see what happens when they arrive.

 

[ctclibby]

Couldn't resist!

 

[MikeGTW]

T

Thank's, I've located some brass worm gears, so I'll see what happens when they arrive.

Chris Looking thru my receipts apparently I bought 6 of the 34128 worms Now if I can remember why
And they were only $3.18 ea from Horizon Hobby March of 2020 Now $6.99

 

[Smudge617]

Chris Looking thru my receipts apparently I bought 6 of the 34128 worms Now if I can remember why
And they were only $3.18 ea from Horizon Hobby March of 2020 Now $6.99

I managed to get 6 brass worms for $20 second hand, the 31428 I saw were a little under $7ea

 

[747flier]

NorthWest Shortline has a wide selection of worms for various shaft sizes, diameters and most importantly "LAY" which has to be a match for the spur gear "Lay". Another source of gears is McMaster-Carr.

 

[Smudge617]

NorthWest Shortline has a wide selection of worms for various shaft sizes, diameters and most importantly "LAY" which has to be a match for the spur gear "Lay". Another source of gears is McMaster-Carr.

Thanks, I've managed to source some original replacements.

 

[747flier]

Glad you have found replacements! As it turns out McMaster Carr has such gears, but too big for MRR use.

Cheers: Tom

 

[MikeGTW]

Thanks, I've managed to source some original replacements.

Chris Just curious did those come with the bearings ?

 

[Smudge617]

Chris Just curious did those come with the bearings ?

2 have bearings and washers, others are just the worm gear and shafts.

 

[KriegslokBR52]

It's dyslexic being hell

It might work on the road if you get pulled over for doing 53 in 35 mph zone-"But ossifer, i had a temporary dislexia".