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Slow speed control axle speed sensors-Class 26 (also class 33)


rodent279
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Think I may have asked this question before, but I can't find the thread now. What are the dimensions of the slow speed control axle sensors on class 26, also class 33, as I assume they are the same?

I'd like to add some to my Lima class 26, as I want to model 26003 in 1984.

Pic below of 33201 shows said box on the inner axle of the leading bogie.

33201_MHR_15052005

Cheers N

Edited by rodent279
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Looking at a side-on view shows the cover as about the same size as the area within the lower footsteps, squared as on a 33 though rather than tapered on a 26. I never realised the 33/2s had slow speed control fitted.

Similarly class 47s that were fitted had the covers angled out/upwards. The cover was plain on the outside and beneath was a toothed wheel bolted to the axle. The pick-up was a small proximity sensor. If you put the cover back on upside down, the speedo didn't work for long once the loco moved because there was a milled cut-out giving clearance between teeth and cover, and the wrong way broke all the teeth off. I know because someone put the cover back on upside down after an ultrasonic axle test (wasn't me fortunately, but lesson learnt).

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