lifitng forks

[harry hills]

hey i hope you don't mind me asking another question but how best to go about making windsreen wipermotor powered lifting forks, nothing fancy just moving them up and back down again.
thanks in advance, harry.

[mattsdragons]

Re: lifitng forks

all i can think of it similar to drill motor style and some how attatch some threaded rod on the front and go down that route.

kaizer is a good example, ask ceri for some pics

[harry hills]

Re: lifitng forks

i think thats over complicating things a bit, cant i just atach the forks straight to the motor some how?

[jonny]

Re: lifitng forks

yes, what are the output shafts from the wiper motors like?

[ewan]

Re: lifitng forks

You might find it easier using a window motor. No idea what kind of torque/lifting force you'd be able to get but many are a simple rack & pinion based rotating arc which you could attach an arm to, think some feathers have done this before

Here's an example motor http://cgi.ebay.co.uk/Jaguar-Daimler-XJ ... 500wt_1156

[jonny]

Re: lifitng forks

or about a fiver from the scrappy

[psychostorm]

Re: lifitng forks

all i can think of it similar to drill motor style and some how attatch some threaded rod on the front and go down that route.

kaizer is a good example, ask ceri for some pics

Jamie may hold that against you, Matt. He built Kaizer's lifter not me!

Though it's a good working mechanism - Kaizer's goes from a drill motor gear box through a welded screw jack designed to lift cars, Laser had a similar mechanism using a drill's existing chuck turning a threaded rod, both suprisingly effective if slower in the task of lifting.

The windscreen wiper or electric window gearboxes or even a seat actuator (SMIDSY used to use some!) would be suitable for use but both the WW motor & Electric window would mount the forks primiarily vertically as opposed to the horizontal plates of Smidsy, Laser & Kaizer n- If they're not strong enough metal wise they will bend!

http://s31.photobucket.com/albums/c3...shirerobotics/
Jamie's photobucket is always good reading - you can see the build of Kaizer's lifter & Rex's robot challenge articles. Good luck!

[mattsdragons]

Re: lifitng forks

well your the one who owns it ceri

[harry hills]

Re: lifitng forks

i had thourght about drill motors, but decided against it, hence why i said windscreend wipers

[typhoon_driver]

Re: lifitng forks

but decided against it

why?

[harry hills]

Re: lifitng forks

becuse i already had windscreen wiper motors

[typhoon_driver]

Re: lifitng forks

clean them up, sell them on ebay for 30 quid each and then buy a drill and use that. More powerful, smaller and a more useful output velocity.

[harry hills]

Re: lifitng forks

i got them for free of someone so it would be really rude to sell them

[Ellis]

Re: lifitng forks

They are yours. It might make you feel a bit wrong, but once you have the money in your hands, I think you will have learned a valuable life lesson. :P

Nahh, do what you want with them. However drill motors are a far better bet, if you can get a much better piece of kit and actually gain money, I do not see a problem in selling them.

[RogueTwoRobots]

Re: lifitng forks

Just be selective with your words.

Say that on the advice of other competitors, you reckoned wiper motors weren't right for the application, and that you exchanged them for some drill motors. You don't need to state that exchanging meant selling something you got for free and using the money on better parts :wink: