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Paul Brodie – Building the Whippet Part V – Seatpost

March 8th, 2012
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Following on from his previous articles Paul Brodie kindly sent us a further article detailing the rebuild of the 1888 Whippet at Flashback Fabrications. Enjoy :D

I didn’t have a lot to go on for the Whippet seat post. The Whippet drawing shows a straight seat post, so why does this one have a kink? If the factory wanted a bend, it would have been a smooth bend. I chose to ignore the kink, but I did like the shape of the top clamp >

I used a piece of 954 bearing bronze. As long as the cutting tools are very sharp, machining is not a problem >

After drilling 2 holes, the block is turned, and the centre milled out >

The block is now mounted on a spigot, and spun in the lathe. I machined the top of the clamp at an angle and included a crude radius for the top >

At this stage I really wasn’t sure what the bronze caps’ final shape looked like. I started the hand filing process, and the shape emerged as I worked..
Below is the seat post: non-adjustable and fillet brazed >

I was pleased with the end result. The seat post will get bead blasted and nickel plated. An old fashioned square bolt will replace the modern hex bolt >

Thanks for taking the tour,

Paul Brodie

3 Comments

  1. Paul Brodie – Building the Whippet Part VI – Chainring | Retrobike wrote,

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  3. Paul Brodie – Building the Whippet Part VI – Rear Hub | Retrobike wrote,

    [...] on from his previous articles Paul Brodie kindly sent us a further article detailing the rebuild of the 1888 Whippet at Flashback [...]

    Pingback on 12 March 2012 @ 15:28

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