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Old 07-15-2014, 06:03 PM   #1
Wrongway-Feldman
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Default Icon Modells stearman motor help needed

I'm looking for a motor to fit my sonic Modells PT-17 Stearman.
This is the same model as sold by hobbyking and unique rc.
Does anyone know of a motor that will fit the original motor mount? The mounting holes are asymmetrical and quite close together.
As soon as I get home I'll measure the spacing as I have lost my rulers in the flood.

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Dumas Ecroupe, MM EVA, E-flite L4 Grasshopper, Sig Kougar, Sig Kobra, Top Fight Contender, top flite mini contender, Carl Goldberg Skylark mark II, M&H Sportster 40.
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Old 07-16-2014, 10:13 PM   #2
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Nobody has any info? I would measure the drilling (bolt hole circle in machine shop lingo) pattern and search for a motor powerful enough for your size that fits. I use some dial calipers that have both standard and metric readout. If you need to convert from metric to standard inches or a decimal equivalent just divide by 25.4

Example: To find the standard size of a 3mm hole. 3mm to standard inches or in this case a decimal.
3mm/25.4 = .118 or one hundred eighteen thousandths of an inch.

David

What was I thinking?
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Old 07-17-2014, 04:23 AM   #3
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I have found the original motor for sale both on amazon and eBay but at nearly $50 before shipping I'll pass. Sonic modells has the motor made for their planes and has a unique mounting hole size.
My choices are to drill holes in the supplied mount that will fit the motor I have or build a new mount from scratch. Neither are a great option as I lost most of my power tools in the flooding.
I think for the time being I'll just put the stearman on the back burner and fly what I still have available to me.

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Dumas Ecroupe, MM EVA, E-flite L4 Grasshopper, Sig Kougar, Sig Kobra, Top Fight Contender, top flite mini contender, Carl Goldberg Skylark mark II, M&H Sportster 40.
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