Broken Tacho/Speedo Shell Mounts

robs ss · Apr 12, 2020

A bloke around the corner from me, who has a 2015ish 961 has a problem that we're going to fix - but thought I'd asked others here if they've seen (and maybe even fixed) something similar.
The plastic housing has broken on both mounting screws that fix the alloy shell in place.
He has super-glued them back in place and we're thinking of making thin (0.5mm) alloy gussets that thread over the screws then bend to overlap the plastic housing. Would screw them to the housing using very small (sunglass?) screws
See pics below.
Any better ideas?

kommando · Apr 13, 2020

Superglue does not work on some plastics, it appears to but lacks strength, Aprilia Speedos do not use superglue compatible plastics so I had to use a special glue which included a primer.

GEL FOR PP, PE, PTFE

https://technicqll.pl/index.php/en/products/instant-adhesives

robs ss · Apr 13, 2020

kommando said:
Aprilia Speedos do not use superglue compatible plastics so I had to use a special glue which included a primer.

Thanks - there are various options there - which one(s) do you recommend?
Cheers
Rob
Edit: sorry, did not read properly - the one for PP, PE & PTFE. Thanks

cliffa · Apr 13, 2020

As Kommando says, and in my experience superglue only works on one type of plastic, the lid of the tube it comes in !

I've just finished repairing the airbox on my Morini Camel, and found "Marley" solvent cement normally used for gutters worked very well. It dissolves the top layer of plastic at the joint and fuses it together.

Cheers,

cliffa.

kommando · Apr 13, 2020

As its made by VDO and has a CE mark it should also be marked with the type of plastic for recycling purposes. VDO would also know.

Clive-961 · Jul 25, 2020

robs ss said:
A bloke around the corner from me, who has a 2015ish 961 has a problem that we're going to fix - but thought I'd asked others here if they've seen (and maybe even fixed) something similar.
The plastic housing has broken on both mounting screws that fix the alloy shell in place.
He has super-glued them back in place and we're thinking of making thin (0.5mm) alloy gussets that thread over the screws then bend to overlap the plastic housing. Would screw them to the housing using very small (sunglass?) screws
See pics below.
Any better ideas?
View attachment 15488 View attachment 15489

Hi mine is broken as well and super glue does not work or q/bond so I’ve ordered a new one but I’m still waiting for delivery

Clive-961 · Jul 25, 2020

Has anybody had any problems with there Tacho not working or flicking on to half rpms

TonyA · Jul 25, 2020

I have not seen that.

Clive-961 · Aug 21, 2020

My problem has been sorted I fitted a new tachometer and now it all works fine.
but I’ve developed another problem a leaking fork leg.

PAR1 · Aug 21, 2020

Clive-961 said:
My problem has been sorted I fitted a new tachometer and now it all works fine.
but I’ve developed another problem a leaking fork leg.

Clive-961 said:
Hi mine is broken as well and super glue does not work or q/bond so I’ve ordered a new one but I’m still waiting for delivery

I had the same problem and superglue was only a temporary fix as it broke away again, I roughenened up the surfaces and melted the plastics together with a soldering iron then used epoxy putty to build around the broken post and it has been a success ...so far (8 months)

Broken Tacho/Speedo Shell Mounts

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