how well do legacy and err cruise locos double head?

No one here has tried a double head of a Legacy Loco and one equipped with ERR?

I stopped trying to double head ANY TMCC locomotives because of the problems with signal we have  One would just stop while the otheer is pushing or pulling until it blows up  Burnt one too many boards

Would guess not at all, just like attempting it with two different TMCC locos. Lionel did not design TMCC with individual referenced speed increments, it splits up slow to fast differently for every locomotive. Have watched F-3 A-B-B-A's with powered B units not run the same speed as the powered A because of it.

If both engines aren't Legacy then I have given up trying to run together...

Glad Lionel finally fixed that one.

Jim

Why not put them in a lashup, but don't lash them together. Keep them a few inches apart and see how they run together.

I think generally speaking, a "non- legacy" loco is supposed to be the lead loco in a lashup. Legacy locos have back drivable gears and will coast  when over assisted.

Obviously you don't want the speed difference of your ERR loco to be so drastic that its trying to drag your leagacy loco anyway

Non legacy locos do not coast at all, and will not deviated from their running speed when slightly pulled or pushed.

IMO a big part of the Legacy solution was MECHANICAL.  Most (but not all) of the Legacy locos, including many of the steamers, now have BACK-DRIVEABLE gears.  This means an external force turning the wheels can turn the motor.

Compared to the self-locking worm drive that was used in the early 2000s, this helps with double-heading, stuttering at low speeds, and bucking from train forces on downhill grades.

I'm not a big fan of double-headed steam.  But the LionDrive diesels are back-drivable and they seem to double-head as smooth as silk.

My $.02,

Ted

 I gave up on mixing them tmcc vs legacy ERR  etc.. as a TR.beats the heck out of the engines

I have started to make a log book. I  run both engines (ERR TMCC Vision Etc,,)on the same track all the way around so that they stay within 1 ft of each other at what i consider a good speed and make a note of it.

For instants I like to double head my y3 and y6. For them to be perfectly matched the Y6 has to be +2 on the legacy compared to the y3.  If the y3 is at 14 on the legacy then y6 is at 16. If i am pushing them with vision cc2  then it has to be at 65.

so the log book would read Y3 14  y6 16  CC2 65.Of course every engine will have to be compared with one of the ones already recorded before entering it.

I havnt spent enough time to do all of them but i think its a good start.

Eventually I will have a slow medium and high speed log made but these are really all the engines i have double headed. I gave up on mixing them tmcc vs legacy ERR  etc.. as a TR.beats the heck out of the engines. It seems to me their should of been a program that you could enter the speed comparison in before makin the TR.

Maybe 1.6!

Its a pain switching back and fourth between engines until at running speed but once they are going I am comfortable  knowing the engines arent getting over strained or tires getting torn up.

You can use the ERR "nudge" feature to match the speeds, though I don't recommend trying to MU Legacy and TMCC anyway.