The Triumph Dolomite Club - Discussion Forum

The Number One Club for owners of Triumph's range of small saloons from the 1960s and 1970s.
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PostPosted: Sun Aug 12, 2018 7:35 pm 
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just an idea could a Stag front quarter light seal be cut down and reglued together,are they the same shape ?

Dave


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PostPosted: Sun Aug 12, 2018 7:49 pm 
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We've discussed that route previously as well, the T2000 version possibly being a better candidate as it's the same shape but bigger so if in desperation with no other option it might just fly in the close enough for government work sort of way but would not be ideal. Who fancies butchering a £50 seal to see if it could be made to fit then?!

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PostPosted: Sun Aug 12, 2018 8:44 pm 
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Yes the rivet is slightly dome headed but not much. I should imagine there are stainless rivets that could be used too. If I had some new seals the lack of a rivet wouldnt stop me fitting it :)

Tony
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Interscrews perhaps? Surely they were only riveted for ease of manufacturing and even so, solid stainless steel flat head rivets seem in plentiful supply or am I missing something?

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PostPosted: Sun Aug 12, 2018 8:47 pm 
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Interscrews yes I was thinking of those too but didnt know they were called that lol.

Tony

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PostPosted: Sun Aug 12, 2018 8:51 pm 
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http://www.interscrew.co.uk/marine-inte ... nterscrews

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PostPosted: Sun Aug 12, 2018 8:57 pm 
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I imagine a rivet is used as it has to act as a pivot; opening or closing of the 1/4 light would undo a screw fixing


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PostPosted: Sun Aug 12, 2018 9:16 pm 
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If it was set at the correct tension then loctited it would be fine. A shouldered bolt could be tightened up with a nut too, so I dont think it would be an issue really. Quite easy to make too. Do we know the O/D of the rivet or the hole size of the hinge?

Tony

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PostPosted: Sun Aug 12, 2018 9:47 pm 
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If it was set at the correct tension then loctited it would be fine. A shouldered bolt could be tightened up with a nut too, so I dont think it would be an issue really. Quite easy to make too. Do we know the O/D of the rivet or the hole size of the hinge?

Tony
I'll chop up a dead 1/4 light tomorrow and measure the bits.

Steve

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PostPosted: Sun Aug 12, 2018 9:51 pm 
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Cheers Steve, could you also measure the thickness of the 3 parts the rivet goes through? (assuming its 3). im thinking a stainless solid rivet with domed head could be shortened to fit ,and drill a short hole in the end to allow it to peen when squished to form the rivet.

Cheers

Tony

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PostPosted: Sun Aug 12, 2018 10:09 pm 
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Cheers Steve, could you also measure the thickness of the 3 parts the rivet goes through? (assuming its 3). im thinking a stainless solid rivet with domed head could be shortened to fit ,and drill a short hole in the end to allow it to peen when squished to form the rivet.

Cheers

Tony
Thats the rivet sorted :D just got to do the seals


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PostPosted: Mon Aug 13, 2018 5:23 pm 
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I have a spare drivers side quarter light with seal that can be sent to manufacture
Keep the show of hands coming people!

Mick


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PostPosted: Mon Aug 13, 2018 10:48 pm 
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A pair of fronts for me.

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PostPosted: Tue Aug 14, 2018 12:11 am 
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Speaking as someone who has commissioned repro parts on many occasions, I doubt the show of hands will sway you one way or another; there are simply too few cars to influence economy of scale.

The significant cost here will be the cost of making the tooling, once that exists, the cost per unit will not vary greatly however many are committed to. For example, with the seat diaphragms, the unit cost between runs of 50 and 100 varied by just shy of £1, so to save having to store them all we opted for an initial 50 knowing we could order a second 50 when required. Despite an initial show of hands for over 30, some two years on we are nowhere near needing to order a second 50 yet.

With the seat diaphragms, the nearside and offside are identical, so the 50 we bought weren't even car set pairs. With the 1/4 light seals, the car set is four individual components, but there will likely be greater demand for the fronts over rears, and I suspect greater still offside front over nearside front.

I'd suggest you seek a cost for the tooling, with the Club or whoever funds the cost taking ownership of the tool, and work out a unit cost based on say an initial run of 50 of each type to reach payback/break even once perhaps 30-35 of each have sold. As supplies of each type dwindle, more can be ordered.

Given the likely timescale between orders, I'd recommend that not only ownership, but also possession of the tools is negotiated, as if anything happens to the manufacturer, the tools would otherwise be lost. It also ensures exclusivity avoiding a scenario where the manufacturer starts selling direct, effectively able to undercut.


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PostPosted: Thu Aug 16, 2018 7:57 am 
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Quote:
Speaking as someone who has commissioned repro parts on many occasions, I doubt the show of hands will sway you one way or another; there are simply too few cars to influence economy of scale.

The significant cost here will be the cost of making the tooling, once that exists, the cost per unit will not vary greatly however many are committed to. For example, with the seat diaphragms, the unit cost between runs of 50 and 100 varied by just shy of £1, so to save having to store them all we opted for an initial 50 knowing we could order a second 50 when required. Despite an initial show of hands for over 30, some two years on we are nowhere near needing to order a second 50 yet.

With the seat diaphragms, the nearside and offside are identical, so the 50 we bought weren't even car set pairs. With the 1/4 light seals, the car set is four individual components, but there will likely be greater demand for the fronts over rears, and I suspect greater still offside front over nearside front.

I'd suggest you seek a cost for the tooling, with the Club or whoever funds the cost taking ownership of the tool, and work out a unit cost based on say an initial run of 50 of each type to reach payback/break even once perhaps 30-35 of each have sold. As supplies of each type dwindle, more can be ordered.

Given the likely timescale between orders, I'd recommend that not only ownership, but also possession of the tools is negotiated, as if anything happens to the manufacturer, the tools would otherwise be lost. It also ensures exclusivity avoiding a scenario where the manufacturer starts selling direct, effectively able to undercut.
Seat diaphragms? I didn't know that these have been remanufactured? Can't see them on the TDC spares list?


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PostPosted: Thu Aug 16, 2018 8:13 am 
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The price list is in the process of being revised...it is taking a painfull while!

The diaphragms have however been promoted in Dolly Mixture, on this forum and the facebook groups (in fact it was the non-member moderator’s displeasure of their promotion on the ‘other’ group and his subsequent censure of the thread that lead to the official Club facebook group being formed)

They are, from memory, £29 each inc U.K. delivery.


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