DIY Bogey Interconnect Weight

[Don_Middleton]

Hi,

I am trying to run tandem Bachmann Annie engine/tenders.

I am building a bogey to interconnect the tender of a lead engine to a second tend/engine. These are both Bachmann engines so they are compatible, but the knuckles don't align for direct connection, hence the bogey.

It connect aok now, but when running I am finding it disconnects from the lead tender when the knuckles latch solidly, and then the second engine will push it off the rails.

My suspicion is that it needs more weight to dampen out any rail imperfections, and keep the wheels down.

If you are wondering how heavy it is, just take a bogey and and one knuckle to it, and that's it. Very light right now.

So, what would be a reasonable amount of weight?

Thanks, Don

 

[dunnyrail]

There also sound to be some incompatibility with the speed of the engines which can happen even with brand new copies of the same design. Have you tried swopping the engines around as it appears that the rear ine may be slightly faster thus popping the tender of the leading engine off the rails. However this swop may cause the tender to derail on pulling so weight may be your solution. For this I would experiment perhaps using old car tyre or roofing led bit by bit till you get a satisfactory result. If you do not like the thought of using lead then pebbles would do, plenty if room to get a good few in the tender. When happy you could plaster the pebbles in place adding a little extra weight unless there is a circuit board in there.

 

[Don_Middleton]

The bogey pulls behind the front tender fine with no load behind the bogey. The second engine is tested marginally slower so a tension should be maintained.

The bogey has no box - just the wheel set and couplers. Wheels are plastic. All this suggests it is very light on weight.

 

[Rhinochugger]

Double heading shouldn't be that difficult. The Bachmann 10-wheeler does have a fair amount of front end 'throw' because the drivers are fairly well back from the tip of the pilot.

Rather than a bogie, have you thought of making up a rooster bar, and replacing the two knuckle couplers with link and pin type? I've done this where I double head two Bachmann Connies.

Link and Pin Couplers (3 Sets)-LGB-64777 | Gaugemaster

Gaugemaster:LGB64777 Link and Pin Couplers (3 Sets) - LGB 64777

www.gaugemasterretail.com

 

[dunnyrail]

The bogey pulls behind the front tender fine with no load behind the bogey. The second engine is tested marginally slower so a tension should be maintained.

The bogey has no box - just the wheel set and couplers. Wheels are plastic. All this suggests it is very light on weight.

Oh I kind of took it that you were using a tender to loco connection rather than an extra bogie.

Aha reread your first post again I can now see what you are saying clearer, I think your issue with any link is the extreme overhang on the front of the second engine 4-6-0 on tight radius curves. What radius you using?