Friday 1 July 2011

The Second Domension

The 'production version' of Blanche II's new dome has been delivered. Here it is getting a trial fitting on the saddle tank.



Getting the dimensions right has been a process of trial and error. There are discrepancies between different drawings of the Penhryn engines and there's been a lot of measuring and scaling from photographs, running them through CAD software and emailing back and forth to come up with this size of dome.

As it was blog readers who pointed out the original dome (supplied with the kit) looked wrong, I'd be interested to see what all make of this one.

2 comments:

  1. Sorry Rob, but the proportions still seem wrong to me. The height looks about right, but the diameter is way too small. According to my profile photos - and using the saddle tank top as a datum line - Blanche's dome is wider than it is tall.

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  2. Hmm, I see what you mean, Roger. But I feel bad about going back to our dome-meister and asking him to make a third one....

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