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 Mar 22, 2020 3:42 pm 
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The Italian Dolomite sprint club does remake these for years now with succes.

Jeroen

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PostPosted: Sun Mar 22, 2020 9:56 pm 
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I suspect the problem with all these repairs, is you are not killing the crack. The end of the crack is a stress riser, in a brittle material that means that once a crack starts, it rapidly propagates through the material.

You need to drill a hole at the end of the crack to stop it, then repair it.


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PostPosted: Mon Mar 23, 2020 8:54 am 
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The first I knew of the problem was when it fell in two pieces.

Jeroen, I can't find anything on Google on these parts from the Italians. Do you have a link or anything?

Graham

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The 16v Slant 4 engine is more fun than the 3.5 V8, because you mostly drive it on the upslope of the torque curve.

Factory 1977 TR7 Sprint FHC VVC 697S (Now all of, but still needs putting together)
B&Y 73 Dolomite Sprint UVB 274M (kids!)
1970 Maroon 13/60 Herald Convertable (wife's fun car).


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PostPosted: Mon Mar 23, 2020 9:20 am 
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Just to update everyone. The one I repaired is still in one piece and the car is in almost daily use.


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PostPosted: Mon Mar 23, 2020 11:03 am 
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Quote:
I suspect the problem with all these repairs, is you are not killing the crack. The end of the crack is a stress riser, in a brittle material that means that once a crack starts, it rapidly propagates through the material.

You need to drill a hole at the end of the crack to stop it, then repair it.
There isn't a crack any more though, it's in two halves.


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PostPosted: Thu Mar 26, 2020 8:51 am 
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There isn't a crack any more though, it's in two halves.
Yup, that were my situation.
I think the araldite might have worked longer term if I'd clamped it together without the stalk in the broken mount. But I was afraid it would brake again when I put the stalk back in.
Graham

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The 16v Slant 4 engine is more fun than the 3.5 V8, because you mostly drive it on the upslope of the torque curve.

Factory 1977 TR7 Sprint FHC VVC 697S (Now all of, but still needs putting together)
B&Y 73 Dolomite Sprint UVB 274M (kids!)
1970 Maroon 13/60 Herald Convertable (wife's fun car).


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PostPosted: Thu Mar 26, 2020 9:09 am 
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But I was afraid it would brake again when I put the stalk back in.
Mine did exactly that..

Mine's the one wrapped in electrical tape :lol:

Steve


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PostPosted: Sat Mar 28, 2020 12:05 pm 
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Jeroen, Is there nothing more on the Italian source - for when the Corola is over?

Graham

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The 16v Slant 4 engine is more fun than the 3.5 V8, because you mostly drive it on the upslope of the torque curve.

Factory 1977 TR7 Sprint FHC VVC 697S (Now all of, but still needs putting together)
B&Y 73 Dolomite Sprint UVB 274M (kids!)
1970 Maroon 13/60 Herald Convertable (wife's fun car).


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 Post subject: Hmm......
PostPosted: Mon Mar 30, 2020 11:22 am 
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I have a broken mounting here and think I will try using Devcon to repair it.
Any reason not to try this adhesive?




thanks,
Ian

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PostPosted: Mon Mar 30, 2020 3:19 pm 
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Jeroen, Is there nothing more on the Italian source - for when the Corola is over?

Graham
Yes. The communication is a bit slow but I got a confirmation there are a few available.

Jeroen

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PostPosted: Thu Apr 02, 2020 11:37 am 
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Yes. The communication is a bit slow but I got a confirmation there are a few available.

Jeroen
Jeroen,
You got a link to order them from?
Graham

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The 16v Slant 4 engine is more fun than the 3.5 V8, because you mostly drive it on the upslope of the torque curve.

Factory 1977 TR7 Sprint FHC VVC 697S (Now all of, but still needs putting together)
B&Y 73 Dolomite Sprint UVB 274M (kids!)
1970 Maroon 13/60 Herald Convertable (wife's fun car).


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PostPosted: Thu Apr 02, 2020 3:38 pm 
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Funny the way these posts re-materialise every once in a while! So our repair continues to function. This is a cheap home fix option that worked for us.
By now 3-D printing the base plate is probably not beyond the realms of possibility and budget and this is indeed what the Italian Club may have undertaken successfully. It will be interesting to hear back from them. In the meantime does anyone here have access to a 3-D printer that would be willing to prototype this item?

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Steve and Nic
1979 Dolomite Sprint Brooklands Green.
Ever increasing box of spares.
Larger garage needed


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PostPosted: Thu Apr 02, 2020 11:31 pm 
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About 7 or 8 years ago after failing to repair my mirror mount with Araldite, I modelled a 'new' one around the ball on the mirror stalk from a product called Selleys Knead It Steel. http://www.selleys.co.nz/trade/speciali ... d-it-steel

While not perfect, it is black and in its shaded location looks no different to the original. No vibration or any other issues for example with adjusting the mirror itself.

Would it snap off in the case of an accident? I expect so but haven't tested that. But then it is a car with an ANCAP rating of one or below so I have to drive to avoid others accidents!

Geoff


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PostPosted: Fri Apr 03, 2020 6:40 am 
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The Italian made is machined from a sort of plastic/nylon. Rigid enough to keep the mirror in place and flexible enough not to break.

There's no link or whatever and before something is possible again in Italy will take while.

Jeroen.

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PostPosted: Mon Apr 06, 2020 5:10 pm 
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Cant get to my car at the moment,but where do they brake is it the mirror end or where the mirror attaches to the body work

mines broke from the body work end,i see Paddocks sell a bracket for the Stag mirror are they the same for Dolomite


Dave


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