I have a situation (backing a long heavy train) where the range of side to side motion in a N scale MT coupler is much greater than needed and is helping the trucks to jump the track due to the added leverage of a coupler that is cocked all the way to one side. I should note that the problem couplers are truck mounted and sit on the end of a long drawbar with the trucks set well back under long cars. This combination puts a lot of leverage on the trucks and causes them to jump the track. Body mounts will not work on these cars.
I have two possible options to consider.
Add shims to the inside of the coupler to restrict its range of motion. This may not be possible since some of that space is also needed to allow the coupler to open and close properly.
Change to McHenry couplers on these cars. I already have a few cars with McHenry couplers installed by the Mfg and I find that they work well with my other MT couplers. I also noted that they do not cock to one side when backing as bad as my MT do. I think this change would greatly reduce the angles that the current MT drawbar/coupler combo apply to the trucks and reduce derailments when in reverse. However, I have heard comments that the McHenry coupler will not stand up to the stress of a long heavy train like the MT will.
Would prefer to avoid the hassel of modifying my MT couplers if possible. My intitial plan is to to experiment with some McHenry couplers on a few cars and see how it works. If this works, would not try to modify the MT.
Agree. I don’t back this train unless I have to. This consist of cars are 25 N scale Red Caboose Bi-Levell Auto Racks. They weigh about 1.75 oz each so the whole consist weighs almost 3 lbs. Thats a lot to back up. The only time I back them up is when I make a mistake in routing and send them down the wrong track and need to back them out. I may need to rely on my 0-5-0 helper get them out of that jam. They do pretty good up to about 15-17 cars but any more and they start derailing in reverse. However, I am still going to play with them and see what I can do to improve the situation.
I have MT couplers that I want to exchange into accumate couplers. That way I don’t get the side by side, jointing up and down. It’s looks unrealistic when a train travels slow or backing up.
The problem is not body mounting. That would be easy to do with these cars. I think the problem would come in operations. Lots of overhang beyond the trucks. My curves are big and should not be a problem but I don’t think they could handle turnouts - forward or backwards. Very similar to long passenger cars. They avoid body mount for same reason.
I am willing to experiment but I do not want to damage any of these cars then find out it will not work.
Time for me to eat crow. Howerver, the outcome is good.
Earlier I discounted the option of body mounting a coupler on these very long cars. I eventually came to the conclusion that anything other than a body mount would not achieve the results I wanted. After some google research, I finally found a site where they did successfully mount body couplers on N scale Auto Racks but they did not give much info on how well they performed in curves and crossovers which was my main concern. As a result, I decided to bite the bullet and mod a few cars with body mounts and see what happens.
These cars come stock with MT 1019 couplers on a MT truck. The 1019 is mounted on a long bar connected to the truck since the wheels are set so far back.
I wanted to minimize damage in case this did not work so the first thing I tried was to remove the stock trucks and coupler and install a MT 1015. Body mounting point is thick plastic so there was no problem mounting a coupler with a 00-90 mounting screw. However, with t
I can agree with the fact MT couplers are responsible of difficulties in backwards motion.
The problems are coming from other factors, but not from the couplers.
MT couplers are far better than any clones, there is no matching quality on the market.
The nickname of MT couplers “Cadillac of the couplers” is not usurpated.
Most of the troubles when you run a train in backwards come from the non body mounted couplers and further from the radius of the curves.
I model in N scale since nearly it exist on the market and reverse train run as well as the other scale if you follow some easy rules.
Body mount all the couplers including passengers cars
Cars need to weight as minimum as NMRA recommandation, over weight is not a trouble.
3.Check all the wheelset for gauge; they must be in gauge with a NMRA gauge
4.Your track need to be as fine tuned as possible, but it’s also important for foward running, check it again and again, check all the turnouts with an NMRA gauge and touch up any slight out of gauge trouble; the track need to be level in the lenght but also from right to left, no dump or no two file of rails not on the same level.
5.Use the broadest radius you can in curve, I feel a 17" radius a minimum and most of my cars are 40 feet boxcars and 33 feet hoppers, use the largest turnouts in any place where it’s possible; I use #6 in yard and industrial spurs but main is #8 with a few#10.
Now your train of 20 cars can go backwards easily without troubles believe me.
Yes it’s a little bit work and some time consuming but the results are so rewarding.
New release of MT cars have for the most body mounted couplers and they are nearly NMRA weighted.