7mm Stretcher bars - advice please

NewportRod

Western Thunderer
As a relative newbie to 7mm (and Scaleseven) could i elicit advice on stretcher bars please? I am looking for something suitable for pre-grouping bullhead hinged blades.

I notice there was some discussion eight years ago on these pages but I wondered if things had moved on.

In 4mm I have been happy with the Masokits and (decades ago) Ottowan offerings.
 

ChrisBr

Western Thunderer
Steve,
A mix of 3d print and brass castings as seen below -
upload_2020-6-12_18-52-15.jpeg
upload_2020-6-12_18-52-38.jpeg
the following shows how the front stretcher bar is constructed -
upload_2020-6-12_18-56-11.pngupload_2020-6-12_18-56-33.png

which ends iup with something like this -
upload_2020-6-12_18-57-46.png

the plan being that the switch is driven from a servo underneath driving the rodding crank...

The weak link is obviously the 3d plastic print but that provides the required insulation. As I am planning to use battery powered RC in future, I may well make the front stretcher all brass and improve its strength, although I have to say it is reasonably robust as seen above based on usage so far.
 

NewportRod

Western Thunderer
Thank you for the pics Chris, they very much look the part.

I'm planning to use BPRC myself but will probably want to allow track to be powered for visiting stock.

R
 
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