read if you have a servo powered antweight

Dan · Post by **Dan** » Sat Apr 14, 2007 7:55 pm

guys got a problem. how did you lot attach your servos to your chassis?
i can't figure out how to attach mine

Simon Windisch · Post by **Simon Windisch** » Sat Apr 14, 2007 9:11 pm

I've been looking through my old pictures of how I did it. It's a complicated shape to describe with words.
http://windisch.co.uk/robots/images/ele ... 102805.jpg
http://windisch.co.uk/robots/images/ele ... 122907.jpg
here's a paper template
http://windisch.co.uk/robots/images/dyn ... 101901.jpg
this one really shows it
http://windisch.co.uk/robots/images/dyn ... 101907.jpg

I hope that helps.
Simon

Flippt · Post by **Flippt** » Sat Apr 14, 2007 9:17 pm

Or simply double sided sticky tape is good enought.

Simon Windisch · Post by **Simon Windisch** » Sat Apr 14, 2007 10:30 pm

Yes, or tape http://windisch.co.uk/robots/howto/build_a_robot.htm or I've used hot glue.

Simon

bobblebot · Post by **bobblebot** » Sun Apr 15, 2007 10:26 am

I have used these sticky pad things, which seem to last longer and be much stronger than double sided sticky tape.

[Edit]
According to my packet, they are "Sellotape Sticky Fixers".

These look like them: http://www.ryman.co.uk/Sellotape-Sticky ... 125050.asp

Simon Windisch · Post by **Simon Windisch** » Sun Apr 15, 2007 5:18 pm

This is all very well, but there's sticking a servo on, and being sure that it won't come off when it gets kicked by Katjusha (should learn to spell that!) you can't get a stronger fitting then bolting to a chassis or body, IMHO.

Simon

Andrew_Hibberd · Post by **Andrew_Hibberd** » Sun Apr 15, 2007 6:43 pm

I used to use double sided sticky tape but found that the servos became sticky and the tape stopped working. I used bolts for a while but then started fitting them directly into the chassis. Although i haven't used a servo in over a year.

Post by **BeligerAnt** » Sun Apr 15, 2007 8:59 pm

I've found epoxy adhesive (Araldite or similar) to be very reliable.
However, a couple of tips that I learnt the hard way

...

Wrap the servo in ordinary sellotape first. Otherwise the epoxy creeps into the gearbox through the joints in the case and then it all stops working.

Use a good amount of epoxy and clamp the servos to the chassis until the epoxy is really hard. It helps if you end up with a small fillet of epoxy around the edge of the servo.

If you're trying to stick to polycarbonate, make sure you at least rough up the surface a bit otherwise nothing sticks to it. Best method I have found is to drill a load of 1mm holes in the polycarb. The epoxy then gets forced through the holes and has something to grip on to.

For the best reliability (and re-useability) nuts and bolts are the way to go, but it usually makes the mechanical arrangement much more complex.

Cable ties are also a good method, especially when combined with double sided sticky tape.

patdied · Post by **patdied** » Tue Apr 17, 2007 11:02 pm

Wow... I just super glue them on.

Dan · Post by **Dan** » Wed Apr 18, 2007 7:16 am

problem is then you an never get them off