Discussion
Hello all,
I need to glue some small magnets onto the end of a driveshaft (I don't know the technical name for this part, it goes "fat" where it enters the gearbox) for a speedo sensor linked to a digital gear indicator.
What is the "best" type of metal glue or similar that I could use for this application?
The pic below shows the existing magnet/sensor arrangement for the cars speedo, the digital gear indicator requires ideally six magnets or more according to the manufacturer. I can't add them to the current set up as the speedo will over read, I need to copy this set up but on the other drive shaft and use more magnets.
Many thanks in advance!
I need to glue some small magnets onto the end of a driveshaft (I don't know the technical name for this part, it goes "fat" where it enters the gearbox) for a speedo sensor linked to a digital gear indicator.
What is the "best" type of metal glue or similar that I could use for this application?
The pic below shows the existing magnet/sensor arrangement for the cars speedo, the digital gear indicator requires ideally six magnets or more according to the manufacturer. I can't add them to the current set up as the speedo will over read, I need to copy this set up but on the other drive shaft and use more magnets.
Many thanks in advance!
stevieturbo said:
What type of sensor is it ?
Can you not just just normal ferrous metal teeth and a suitable hall sensor ?
Then the teeth could be tack welded on.
I don't know in all honesty. Its for an Acumen DG8 digital gear indicator, I wired it in but it doesn't work. After speaking to Acumen and re-checking everything, it turns out the problem is the cars speedo signal. The gear indicator needs multiple pulses per revolution, the car this is going on only has the one magnet. Because I don't want to introduce compatibility issues with the gear indicator, I've ordered the Acumen sensor and eight magnets. I don't know how hall sensors work (I should take the time to google it). I don't know what type of sensor the Acumen one is (it should arrive next week), I just know it needs to "see" magnets.Can you not just just normal ferrous metal teeth and a suitable hall sensor ?
Then the teeth could be tack welded on.
Sorry for not knowing much about the details, I'm alright following a circuit diagram but I don't neccesarily understand how all this electrickery stuff works!
I've used Wurth (PU Adhesive) on mine, as it's a bit flexible. Going by various kit build diaries, people seem to loose araldited ones quite often, I'm guessing because the surface wasn't prepared properly, or the vibrations cause it to crack and eventually fall off.
Edit - try asking on locostbuilders or other kit car forums, there'll be a wealth of experience with this, as a large number of kits use these sensors.
Edit - try asking on locostbuilders or other kit car forums, there'll be a wealth of experience with this, as a large number of kits use these sensors.
Acrylic structural adhesive appears to be the way to go for example http://krayden.allegroconsultants.com/structural-a... This is not cheap 'hobby'glue and 50 ml of Permabond ta459 will set you back 25 quid - should do the job though!
Are the CV Joints the standard honda ones?
e.g. http://www.ebay.co.uk/itm/HONDA-CIVIC-2-0-TYPE-R-2...
You can see the abs ring on the CV
e.g. http://www.ebay.co.uk/itm/HONDA-CIVIC-2-0-TYPE-R-2...
You can see the abs ring on the CV
Chemical metal won't work, it's just polyester body filler with aluminium powder in it so it's not particularly strong.
Epoxy will do the job, but as always 90% of the job is in the preparation. You can't glue anything permanently to a greasy or loose surface. Use the slower setting epoxy as well (e.g. the standard JB Weld), the rapid set ones don't seem to be half as good IME.
Epoxy will do the job, but as always 90% of the job is in the preparation. You can't glue anything permanently to a greasy or loose surface. Use the slower setting epoxy as well (e.g. the standard JB Weld), the rapid set ones don't seem to be half as good IME.
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