Posted 18 January 2012 - 05:48 AM
Posted 18 January 2012 - 09:28 AM
Posted 18 January 2012 - 09:31 AM
Edited by cavejohnson, 18 January 2012 - 09:31 AM.
Posted 18 January 2012 - 01:05 PM
I machine the piston of the ram just a fraction smaller than the inside diameter of the cylinder than I require, then I insert a pin on each side these are then filed down to suit the
cylinder, so they are a tight fit, the ram then relies on fiction to work, with some fine tuning you can get them very close to being what you want and hold the weight that you want it to hold
I have made them in styrene tube, and used a drill to shape what I want them to be, (hold the parts in the chuck
here is the pin that is filed down ready for a test fit, you can also machine a groove and use "O" rings as you are applying friction to the inside of the rams/cylinder
Here is some better ones that I had some white metal fitting made these did hold a 600mm boom up
The grease option sounds like it would be ok, but could end up messy, then again, would add some real detail, good idea there,
the radio antenna, so also a great idea, but these create a lot of force on the fittings that you attach, and on the model when you are adjusting them as they are tight, the antenna has to stay up right, and are generally chrome, which is a hard surface to get glue to stay attached to
The RC guys have full working hydraulics, with pumps, valve banks, and rams, they are expensive
Hope this helps
Posted 19 January 2012 - 05:29 AM
Posted 19 January 2012 - 10:25 AM
Posted 26 January 2012 - 05:32 AM
Again "cavejohnson" that is a really great idea with the grease, I will give it a shot and it should hold
the weight that I need on it.
Posted 03 February 2012 - 01:48 PM
Once you have the ramp where you want it you stick the safety pin in one of those hole's and let the cylinder down until the pin
If you do this on your model it adds detail and you don't take a chance on the cylinder's not holding the weight.
Posted 16 November 2012 - 06:59 AM