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 Post subject: New Hydrolastic Units
PostPosted: Thu Apr 07, 2016 9:25 am 
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The 1100 Club have invested £15k into a trust bond for future development of reproducing the ADO16 Hydrolastic units. Work is underway with the Moulton family to establish rubber compositions as well as contacting the few that remain who worked on the Moulton engineering suspension design. Dean Oakey the Chairman of the 1100 Club is heading this project and would be interested in speaking with anyone who has specialist skills or engineering knowledge particularly in the rubber manufacturing industry either here in the UK or abroad. Dean can be contacted at chairman@the1100club.com

Perhaps during this development replacement Mini displacers could also be manufactured as well :idea:

Alan


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PostPosted: Thu Apr 07, 2016 9:38 am 
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displacers are one of the items on our wish list, but they are mega complicated to make

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should you wish, you can contact me on rich@minispares.com

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PostPosted: Thu Apr 07, 2016 11:09 am 
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Location: Melbourne, Australia
Out of interest, here's the BMC Australia engineering drawing for the Mini displacers made by Dunlop in Sydney back in the 1960's. For those not familiar with Australian model codes, YDO5 is a Mini DeLuxe and YDO6 a Cooper S.

There's a lot of Mini enthusiasts here in Oz that would love to have access to new displacers as many of the originals are now showing signs of their age through rust and leakage. As a result some owners are reluctantly converting their hydro car to rubber cone.

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PostPosted: Thu Apr 07, 2016 12:12 pm 
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Thanks Winabbey for posting that engineering drawing. This may be of interest to whoever decides to make new units :idea:

Alan


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PostPosted: Thu Apr 07, 2016 3:20 pm 
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Its a very interesting drawing, but it's just the "General Arrangement" drawing. There would be other more detailed drawings that made up the complete set.

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PostPosted: Fri Apr 08, 2016 9:19 am 
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mk1 wrote:
Its a very interesting drawing, but it's just the "General Arrangement" drawing. There would be other more detailed drawings that made up the complete set.

For parts and assemblies that are manufactured by a third party, such as displacers, the detailed drawings are with the manufacturer, at least they are in Australia. For example, generators, alternators, starter motors, wiper motors and the like made by Lucas are supported by a basic BMC drawing showing dimensions, specification and connections. Further detail is in Lucas' own engineering drawings.


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PostPosted: Fri Apr 08, 2016 9:25 am 
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winabbey,

You are correct, the detailed drawings would be those of the supplier.

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PostPosted: Fri Apr 08, 2016 7:23 pm 
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rich@minispares.com wrote:
displacers are one of the items on our wish list, but they are mega complicated to make


Really complex... 'the development of the ADO16 displacer diaphragm by Dunlop was a vital factor in the success of the entire Hydrolastic system. It is, in fact, a rubber moulding of 'diabolo' construction reinforced with 424 nylon cords each of 0.022 in. diameter.' and 'an essential feature of the ADO16 Hydrolastic system to ensure constancy of trim height is that of sizing the unit. This is done my machining the top of the canister so that the overall height of the unit is held to within +/-0.02 in. at a constant pressure of 200 psi and a dead load of 2,000lb.'

From 'The 1100 Companion' by K. Ullyett, chapter 4 'Using Stronger Elastic'


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PostPosted: Fri Apr 08, 2016 8:01 pm 
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Does anybody know what happened to the original tooling for the displacers? Would be interesting to know if they could be located and used to recreate new items.

There would be no shortage of people (myself included) who would pay a considerable sum for new Cooper-spec displacers.


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PostPosted: Fri Apr 08, 2016 9:59 pm 
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Carbon & Highnumbers,

We are all interested and in this together so the sooner the better we see new units :)

Alan


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