I've used a 60760 in my 3300 Crocodile, and was able to get a reasonable speed match to my 39560 Crocodile, which has the Generation 1 C-Sine motor. Obviously if you are using a decoder with more speed steps, (mfx Loksound with 128 speed steps, for example) then you can get a better match, but I think you should be able to do reasonably well with both the decoder sets you mention.

Yes there is a slight speed mismatch at lower speeds, but it is not too bad at all.

I've heard that the faster one should be the first loco pulling the slower one.

Hi Ed,

Vmax & accel+brake delay can be set on 60760 decoder (and it's not possible to set separately accel and brake delay, they go both "packed"), but it's not possible to set Vstart & Vmed. Actually, 60760 decoder is a very basic decoder, has load compensation but no other functions or special gadgets.

As you suggest, I think it would be easier to adjust the good old 6090x, or (cheaper), get a 60760 kit and use the motor parts but replace the decoder and use a LoPi or UHL one. I think that 6090x decoder has no load compensation, and maybe for your purposes this would be better as it's almomst impossible to perfectly match the speed for both locos.

Best regards.

Hi ed,

I would use a 6090* decoder rather than the 60760, for the simple reason that the 6090* decoder has 27 speed steps, and as such it will be easier to match speeds(60760 has only 14).

And you will find out very quickly which loco tends to pull slightly faster, and put this one in front.

Cheers......

Mike.

I agree with that logic Brakepad. That has always been my thought when it came to double heading. As yet I dont have a layout big enough for double-headed trains though so I havent had to test it.

Caillin

Hello,

Thanks for all suggestions. What I will do it is install a NMRA plug and test these decoders plus a Lokpilot 3.

And I will go back to ya in a couple of weeks with results.

Ed

Hello all,

This is the summary of my testing of 3 decoders: MÄ 60760, MÄ 60901 and Lokpilot 3.

The object was to find out the best decoder to replace MÄ 43636 3 pole rotor/ Delta to match my SBB Re 460 39 with big SINUS motor.

The modified received a 5 pole rotor and permanent magnet.

I installed a NMRA 8 plug for this comparison.

First, the 60760 decoder can be adjusted nicely for braking/acceleration delay to match the parameters of SINUS lok, BUT like Mike pointed out, has only 14 speed steps. The two locomotives could operate together, but since the speed transitions are different there is a little of "tug of war" effect specially when on quick change of speed thru control unit. Adjusting the 60760 parameters was a little tricky Both locomotives have to be adjusted alone and separated on the track.

Next: 60901. It actually took me only 2 minutes to adjust both locomotives. My big surprise was to note that the locomotive with DCM started to roll first than the Sinus motor. It puzzles me, because the Sinus motor has 9 poles versus 5 from DCM and no brush drag. In order to adjust the locomotives I removed both bodies and placed on the same 9 ft straight track. The locomotives were kept 5 inches apart. The first parameter that I immediately notice needs to match is the brake/acceleration delay. That was done very quickly. The adjustment of speed by pot trimmers easy, too. I noticed that the lok with DCM run faster than the one with Sinus.

I didn't tested the combination 5 pole DCM/lokpilot because the parameter adjustment procedures would be the same as 60760. It would take more time than 60901.

So my opinion: 60901 is the way to go.

Since I was in the installing/swapping decoder bizz, I also converted a non working Borsig Mallet BR53 (MÄ 3602) with 3 pole coil magnet and 6080 decoder to 5 pole DCM and loksound 2.5. The installation went smooth, but light leads needed to be separated from chassis/ ground. I am planing to double head the 3602 with another mallet photogrey with condenser tender MÄ 37022. They both have very different sounds with the later close to the sound of turbine.

Finally to end my day, last Sunday, I converted the class Sa tank lok from MÄ 28703 SJ historic wooden car set from delta to DCM and 60760.

That was a productive day.

Ed

Hello John,

I tested them on a flat track.

While testing them and not having paired yet for some speed, I noticed that the load compensation was stronger on the lok with DCM/60901. This is shown by a change of pitching in the motor. In any event, I don't think that would case any problems.

Ed