MTH freight truck springs

 I have only the Bettendorf trucks. I don't know for sure if they are the same as the roller bearing ones. I measured one of mine. If no one has a better source. Go to  www.nwsl.com   Look in the hardware part of the catalog. Below is a pic. of springs used for sprung drivers in HO steamers. A 2mm machine screw fits inside of the stock MTH spring. The large version might be a bit longer than the stock MTH. Fairly close on the other dimensions. Have no idea on the coil spring spacing or how thick the spring wire is. They don't offer a pic. .

 How many do you need ?  I bought a bag at a show from old Weaver parts stock from Bob Lavezzi. In doing scale coupler conversions. I've had a few fly away disassembling the trucks.  These looked close to the MTH ones. At least they were black with adequate space between the coils. If no one has a working source. I'll track them down and see if they will work.

Thanks for the info. I need 7 but I’ll buy some extras.