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Accucraft Ruby, Accucraft 1:20.3
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118 Posts
No input on mounting servos, but my 2 pennies on batteries. I have RCS rx in my Ruby, started with alkaline batteries in a holder. Terrible life expectancy and started getting twitchy servos after 40 minutes of running, change batteries and all good. Got reachable 5 cell battery packs. Night and day difference. Run the train for 5 sessions of 1hr plus before I consider recharging.

If you're in the US Maxxpacks in Wisconsin is who I got mine from.
 

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Accucraft Ruby, Accucraft 1:20.3
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118 Posts
Thanks for the info! I've currently got rechargeable LiPo AA and AAA flat pack battery holders that fit onto the bottom side of the cab roof, like Roundhouse does. Problem with the Sabrina is its Safety Valve exits thru the front part of the cab roof, so the AA size will not fit there.
Where do you mount the battery pack in your Ruby?
This is my very detailed thread on my Ruby's cab layout.
As I only have the Ruby, I am not familiar with the Sabrina and not sure if my work can be copied to it.

Here is a Thread on the modifications I've done to increase tractive effort.
 
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