Whytie2697 Posted July 22, 2012 Report Share Posted July 22, 2012 Me and a mate are trying to make a whirly we are almost there just can't get the motor to slow down enough it is doing about 54 rpm any suggestions about how to slow it down much appreciated Quote Link to comment Share on other sites More sharing options...
ozzy518 Posted July 22, 2012 Report Share Posted July 22, 2012 Stick some form of resistor between the battery and the motor. Something as simple as a dimmer switch ought to do it Quote Link to comment Share on other sites More sharing options...
Whytie2697 Posted July 22, 2012 Author Report Share Posted July 22, 2012 Ok cheers for that will try it next time o see him just wire it straight from the battery and then wire the dimmer switch to the motor Do you have a recommended target speed to try and get it down to Quote Link to comment Share on other sites More sharing options...
ozzy518 Posted July 22, 2012 Report Share Posted July 22, 2012 If u use something like a dimmer it will allow you to vary the current and likewise the speed Quote Link to comment Share on other sites More sharing options...
carpentermark Posted July 22, 2012 Report Share Posted July 22, 2012 If u use something like a dimmer it will allow you to vary the current and likewise the speed dimmer switch wont work mate theyre designed for 240volt. you need a 12 volt variable resistor or standard resistor. to get right speed i had to use two 4ohm 12v resistors when i did mine. Quote Link to comment Share on other sites More sharing options...
carpentermark Posted July 22, 2012 Report Share Posted July 22, 2012 (edited) Ok cheers for that will try it next time o see him just wire it straight from the battery and then wire the dimmer switch to the motor Do you have a recommended target speed to try and get it down to You should be looking for one complete revolution every 2 seconds obviously to achieve this, the speed of the motor will be different depending on length of arms. thats the beauty of using a variable 12v resistor so you can alter the speed. Edited July 22, 2012 by carpentermark Quote Link to comment Share on other sites More sharing options...
Whytie2697 Posted July 22, 2012 Author Report Share Posted July 22, 2012 We have a resistor but must not be wired up properly as it is not changing the speed at all will try to get a look at it through the week cheers for the help Quote Link to comment Share on other sites More sharing options...
philm Posted July 23, 2012 Report Share Posted July 23, 2012 Me and a mate are trying to make a whirly we are almost there just can't get the motor to slow down enough it is doing about 54 rpm any suggestions about how to slow it down much appreciated Try one of these from the bay! Item number: 190706079902 Quote Link to comment Share on other sites More sharing options...
Cosd Posted July 23, 2012 Report Share Posted July 23, 2012 If you are trying to do it on a tight budget, then a fan speed control switch from the car scrappie will do the job. Cos Quote Link to comment Share on other sites More sharing options...
Whytie2697 Posted July 23, 2012 Author Report Share Posted July 23, 2012 Thanks for that cos will try to get one and try that bit of luck my mate will have one at his work off an old tractor or something Quote Link to comment Share on other sites More sharing options...
The Essex Hunter Posted July 23, 2012 Report Share Posted July 23, 2012 Me and a mate are trying to make a whirly we are almost there just can't get the motor to slow down enough it is doing about 54 rpm any suggestions about how to slow it down much appreciated Most windscreen motors you can slow down with the second feed wire, so have a try with that, dont forget that when you load it with couple of dead birds then it will slow down a fair bit. This will slow it down! http://www.ebay.co.uk/itm/LED-Light-Dimmer-Adjustable-Bright-Controller-DC-12V-8A-/280737152463?pt=UK_DIY_Material_Electrical_Fittings_MJ&hash=item415d3cfdcf TEH Quote Link to comment Share on other sites More sharing options...
harpoonlouis Posted July 23, 2012 Report Share Posted July 23, 2012 Hell's teeth! That's a cheep speed controller. Watch out with using a resistor as you are wasting power and will shorten the battery life. The little solid state timers and dimmers us a chip to achieve the same effect bu the power consumption is a lot less ( only 5-10%) wasted Quote Link to comment Share on other sites More sharing options...
la bala Posted July 23, 2012 Report Share Posted July 23, 2012 google magtame Quote Link to comment Share on other sites More sharing options...
The Essex Hunter Posted July 23, 2012 Report Share Posted July 23, 2012 Hell's teeth! That's a cheep speed controller. Watch out with using a resistor as you are wasting power and will shorten the battery life. The little solid state timers and dimmers us a chip to achieve the same effect bu the power consumption is a lot less ( only 5-10%) wasted They work ok....we use them on the lamps when there is a shy fox, also on the rotary for the crows! TEH Quote Link to comment Share on other sites More sharing options...
harpoonlouis Posted July 23, 2012 Report Share Posted July 23, 2012 Are they tough? Some pop if connected wrongly so I stick a diode in just in case. Quote Link to comment Share on other sites More sharing options...
The Essex Hunter Posted July 24, 2012 Report Share Posted July 24, 2012 Are they tough? Some pop if connected wrongly so I stick a diode in just in case. Used my one for 6 hrs on the crows with my windscreen motor driven rotary....just kept it dry in a plastic bag and coverd it over with a bit of barley...130 rooks/jackdoors and 5 pigeons With the black stuff a slow speed is the key.. TEH Quote Link to comment Share on other sites More sharing options...
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