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Post by Deleted on Feb 25, 2017 21:25:08 GMT -5
Has anyone added a front weight to the challenger? My front drivers just don't seem to have enough downward pressure to spin.
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Post by markm on Feb 26, 2017 19:49:36 GMT -5
On the Mikados, I found a bit of gold chain mounted to trolley helped. And if you can afford a Challenger, you can afford a few grams of gold chain.
mark
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Challenger
Feb 26, 2017 19:51:47 GMT -5
via mobile
Post by Deleted on Feb 26, 2017 19:51:47 GMT -5
On the Mikados, I found a bit of gold chain mounted to trolley helped. And if you can afford a Challenger, you can afford a few grams of gold chain. mark Can you show me what you mean? I'm not sure how you're mounting it.
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Post by markm on Feb 26, 2017 20:24:37 GMT -5
Here's a quick shot of an unmodified Mikado (it was on the top of the pile). I used a small piece of very fine gold chain glued along the top of the trolley as indicated by the arrows. I haven't seen the Challenger in close detail, but I would think you could add extra weight the same way. Hopes this helps, Mark
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Post by mrja on Feb 27, 2017 4:07:47 GMT -5
Except... that's not what the original poster is describing his problem is. He is describing the non-powered drive-set on the Challenger... not the "trolley".
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Post by markm on Feb 27, 2017 5:45:28 GMT -5
Except... that's not what the original poster is describing his problem is. He is describing the non-powered drive-set on the Challenger... not the "trolley". Yes, but it's the same idea, just a different location. BTW welcome back...it's been a while.
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Post by davestubbs on Feb 27, 2017 7:33:51 GMT -5
Be very careful when pulling long trains with any of the brass steam engines that have the traction tire. The heavy load puts too much stress on the intermediate gear between the motor and the wheel set gears. This can make the support rod that gear spins on to spin and elongate the holes on the frame and kill your engine. (Yes I oiled it). Had mine pulling 60-70 PFE at a show for a weekend and found this problem during the after cleaning.
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Post by Deleted on Feb 27, 2017 7:35:16 GMT -5
This needs something heavier and larger than a bit of gold chain. I'll make an update tonight.
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Post by Deleted on Feb 27, 2017 7:38:28 GMT -5
Be very careful when pulling long trains with any of the brass steam engines that have the traction tire. The heavy load puts too much stress on the intermediate gear between the motor and the wheel set gears. This can make the support rod that gear spins on to spin and elongate the holes on the frame and kill your engine. (Yes I oiled it). Had mine pulling 60-70 PFE at a show for a weekend and found this problem during the after cleaning. I think this problem has already happened. I had to do some work on the gear and pin just to get it to run. The gear wasn't making contact and the motor was spinning. After reworking the brackets and the pin it was up and running. I think you're very right about keeping it a light load!
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Post by Deleted on Feb 27, 2017 7:42:25 GMT -5
The pin wasn't going all the way through the hole enough. This caused the gear to walk forward and backwards. After fixing the bracket and a new pin it runs smoothly.
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Post by davestubbs on Feb 27, 2017 9:28:21 GMT -5
As far as the front truck try putting a small washer between the front truck pivot point and the base frame. It will apply a little more down force to front truck. put in washer and place on track. If the front wheels of the truck lift remove washer and either sand thinner or use a thinner washer. you will get to a sweet spot that keeps it rolling without wanting to derail.
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Post by Deleted on Feb 27, 2017 21:12:59 GMT -5
The brackets were too far apart for the pin. Both ends have a taper, that's where the problem began. The pin was moving out of the bracket and allowing the gear to walk off the worm drive and into a bind. Once the brackets were reshaped everything worked great. I'm going to add a weight to the engine secured with screws.
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