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  1. #1
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    Default An Intriguing Re-Motor - Wadkin RA Buzzer.

    I came across photos of a Wadkin RA buzzer that had been remotored. I thought the way it was done was intriguing.

    But first a bit about the RA.

    I don't know when the 6" RA was introduced, but it's illustrated in a 1928 Wadkin publication I have.

    RA1.jpg RA from Wadkin Booklet #173 of 1928

    And like it's bigger brother the 9" RB, it was originally offered as a "Bench planer"

    Ra2.jpg Illustrations from a 1928 catalogue which I believe was post by Clear Out of this forum.

    RA3.jpg

    The motored RB (i.e. non-flatbelt driven) was powered by a rear mounted motor through a herringbone gearbox that resulted in the cutterblock rotating at 4000rpm. The smaller, cheaper RA also had a rear mounted motor, but connected directly to the cutterblock shaft, giving a claimed speed of 3000rpm. But the actual speed of a 2 pole motor is closer to 2800 rpm - which is less than ideal for a buzzer.

    By 1930 (and possibly several years earlier) the RB was no longer offered as a bench planer, and the motor was moved to the cast iron stand - and the herringbone gears were replaced with vee belts.

    The motored RA, on the other hand, continued to be offered as a bench machine and a stand mounted version was introduced. The motor remained out the back on the cutterblock shaft.

    RA12.jpg Note Special Feature 2. "Can be placed on bench... or supplied with a metal stand..."

    Eventually the bench mounted option was no longer offered and the motor was moved to the stand - like the RB - which allowed the cutterblock speed to be raised to a more acceptable 5000 rpm. Probably at the same time the horsepower was increased from 1/2 hp to 1 hp.

    WadkinRA1949.jpg From 1949 catalogue.

    The highest numbered RA I've found is RAD (originally a DC machine) of 1944, but the above illustration is believed to be from 1949 - probably the last year the RA was offered, as it's replacement - the 6" Wadkin RR was in production in 1950.

    Cheers, Vann.
    Gatherer of rusty planes tools...
    Proud member of the Wadkin Blockhead Club .

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  3. #2
    Join Date
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    Default

    Have you seen the one on ebay. Its a 3 knife head







  4. #3
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    Default Too slow.

    Quote Originally Posted by wallace1973 View Post
    Have you seen the one on ebay. Its a 3 knife head...
    Ahh, yes. That's the re-motor that intrigued me (was to be the second post on this thread - but it was past my bed time ).

    Here you can see the original motor housing out back of the buzzer.

    RA7.jpg

    Kept, no doubt, because the outer shell of the motor is the bracket for the fence.

    RA8.jpg

    RA9.jpg

    A new (in this case brand new - and single phase according to the seller) motor has been fitted to the side and a belt cover made up, converting it from direct drive (~2800rpm) to something faster.

    Nice job IMHO.

    And as Wallace says: it's RAA 188, test number 7810 - which makes it pre-1937 (and with a cast Wadkin & Co. tag which makes it pre-1936)

    wRAA 188 7810 UK.jpg

    Cheers, Vann.
    Gatherer of rusty planes tools...
    Proud member of the Wadkin Blockhead Club .

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