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1937 Alfa Romeo 12c

PostPosted: Mon Nov 26, 2018 11:01 am
by BARC 1
With Munter floating the Prewar idea, I took some interest in building one or two. First up was the Old Matchbox Auto Union D. Once that was done I had to have something to race against. A quick look on Ebay and I found a couple of Resin Alfa's that came from France.

I built the Alfa 12 C. Has a scratchbuilt Chassis, runs a Minebea square can 6 pole motor, and has BRM wire wheels.

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Re: 1937 Alfa Romeo 12c

PostPosted: Mon Nov 26, 2018 2:35 pm
by Dundee Denny
TRUE work of art here!!!!

detail is amazing!!

Thanks for sharing!!

Dundee Denny

Re: 1937 Alfa Romeo 12c

PostPosted: Tue Nov 27, 2018 12:39 am
by alexis in greece
I love it.Any chance of chassis photo?

Re: 1937 Alfa Romeo 12c

PostPosted: Tue Nov 27, 2018 9:31 am
by BARC 1
I will try and post a picture of the chassis today.

Re: 1937 Alfa Romeo 12c

PostPosted: Wed Nov 28, 2018 10:10 am
by BARC 1
Here is the chassis I build for the narrow F1 cars, past and present. The dimensions of the Minebea square can allow you to flat mount it on a chassis. The centerline of the pinion shaft matches the rear axle center line. This really simplifies what is needed. A brass strip is used for the base, and every thing else is glued on. The rear Lego Blocks even have mounting holes that allow you to flush mount flanged 3/32 bearings. Easy for anyone to build and the results are quite surprising.

The Minebea S can turns 16K at 12 volts, but can easily handle more voltage if you want to spice the ride up. I have run them for hours at 14 volts and they don't even get warm. They have magnets in the four corners and have a 6 pole armature. The result is a small motor with surprisingly good brakes. On a home layout they can propel the car to critical velocity for desloting so they are fast enough. On a club track with a long straight away they don't have the punch to run with 130 type motors I have measured the torque at 50 gm/cm

I have twinned them up in a sidewinder config to double the torque in an effort to increase acceleration. An example of this is in a 132 Ferrari F 4 I built

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Alfa 12 C chassis

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