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Post by Andrew Rowland on May 30, 2012 23:31:08 GMT -5
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Post by Mark Huber on May 31, 2012 9:04:05 GMT -5
Lovely Andy! Details please. RD gears?
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Post by Andrew Rowland on May 31, 2012 11:15:06 GMT -5
Details..... hmmmm....
Well it started as a Matchbox static kit from the '70's which I bought from someone off SF in the US.
Then I rebuilt every detail in brass v. thin sheet as a real monocoque. The motor is bolted via 'grub' or set screws to the chassis. So the motor is 'fully stressed' as the saying goes.
I'm saying all that because the point is that the rear axle rotates about the centre line of the motor/pinion, giving a sort of 'suspension' affect from the trailing links which are clipped but not soldered in. Its almost a rising-rate suspension as the trailing links resist the more they are stressed.
Well as you can imagine that movement plays havoc with gear meshing despite the fact that their is a 'keeper' around the protruding motor cylinder at the end. So those RD gears didn't last too long being made from soft aluminium and having therefore short teeth. Plus that motor is revving at 30.000rpm.
So in the end I had to revert to (don't mention this to Chris or i'll get into real trouble) an Ostorero bronze gear. That limits the ratios I can run as they only come in 27t.....
I can post pic's of the build if anyone's interested but it did get posted elsewhere last year so i didn't want to bore people.....
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Post by Andrew Rowland on Sept 29, 2012 0:49:58 GMT -5
For Paul This shows rather better that brass hub Paul, it is in fact a piece of brass flat that is used to hold the wheel bearing and mount all the supporting brackets etc. Hand drilled, cut and filed. Best of luck Andi  |
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Post by f143 on Sept 29, 2012 4:56:33 GMT -5
Andi!!!!!
If anyone's interested!!!!
That's what we all signed up for, you can't tell us enough or show us enough.
Thanks
Nigel
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Post by Andrew Rowland on Sept 29, 2012 22:51:59 GMT -5
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Post by Andrew Rowland on Sept 29, 2012 23:00:45 GMT -5
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