silverfox4 Posted November 28, 2019 Report Share Posted November 28, 2019 +1 Roger, as I do have a round bodied 14W motor that I picked up at a local flea market about a year ago. It was a completely unrelated purchase to this topic - I wanted the rack, so maybe all a fortuitous accident. Wonder if it works.... Cheers, Alf Quote Link to post Share on other sites
tthomson Posted December 4, 2019 Report Share Posted December 4, 2019 An update on wiring in a 14W motor. The existing pull switch on a TR4A will work fine if wired correctly. Here is how it connects to the loom. As in previous diagram, I am using two changeover relays to get the proper functioning of the fast, slow and park facilities. Kind regards Tony T Quote Link to post Share on other sites
silverfox4 Posted December 4, 2019 Report Share Posted December 4, 2019 Tanks Tony, Just wondering, what size/amperage are the relays? could mini relays be used to save space? Cheers, Alf Quote Link to post Share on other sites
BlueTR3A-5EKT Posted December 5, 2019 Report Share Posted December 5, 2019 Are all 14W motors two speed? Did not early Range Rover use a 14W as a rear wiper - That is where my single speed washer & wipe switch came from. Might even be the source for 90 degree gears. I know, count the wires or open them and count the brushes. Cheers Peter W Quote Link to post Share on other sites
RogerH Posted December 5, 2019 Report Share Posted December 5, 2019 Hi Pete, does the motor have to be designed for single speed. The switch dictates what should be happening. SVC and ANG both do a good selection of gear wheels. Roger Quote Link to post Share on other sites
BlueTR3A-5EKT Posted December 5, 2019 Report Share Posted December 5, 2019 39 minutes ago, RogerH said: Hi Pete, does the motor have to be designed for single speed. The switch dictates what should be happening. SVC and ANG both do a good selection of gear wheels. Roger Two speed 14W have a third carbon brush as far as I can work out, hence the extra (5th) wire. As an aside...TR5/6 PI fuel pump uses the same design & fitting brush plate assembly but it has only two brushes. The owners are often thrown when they open the motor to find a brush plate with only two brushes and in their repair kit they have a brush plate with 3 brushes. The three brush plate being used universally to supply both conditions. Surely if you have a TR4/4/5 and are converting to a 14W motor AND you need wheel boxes...just fit the Lucas wheel boxes from a TR6/MGB/XJ6 with a 115 degree wiper motor gear in the 14W. No need to chase 90 degree gear or use rotten quality remade TR4/5 wheel boxes. Cheers Peter W Quote Link to post Share on other sites
RogerH Posted December 5, 2019 Report Share Posted December 5, 2019 Hi Pete, changing the wheel boxes is a serious pain. Buying and fitting a 90 or 95 degree gear wheel is easy and cheaper. These will give apprx same sweep and speed but with greater torque. Roger Quote Link to post Share on other sites
tthomson Posted December 10, 2019 Report Share Posted December 10, 2019 On 12/4/2019 at 11:25 PM, silverfox4 said: Tanks Tony, Just wondering, what size/amperage are the relays? could mini relays be used to save space? Cheers, Alf Most of the mini relays are fine. Typically they happily switch up to 30 Amps. Your motor should not be drawing that amount of current. TT Quote Link to post Share on other sites
silverfox4 Posted December 11, 2019 Report Share Posted December 11, 2019 great thanks Tony Alf Quote Link to post Share on other sites
Brian Eldred Posted December 29, 2019 Report Share Posted December 29, 2019 I've decided to do the 14W motor conversion on my 4A and have acquired all the bits, apart from the TR6 type bulkhead mounting bracket onto which the u-shaped bracket bolts. Does anyone know if this is available or will I have to fabricate one? Shouldn't be difficult, just trying to save myself work. Thanks. Quote Link to post Share on other sites
RogerH Posted December 29, 2019 Report Share Posted December 29, 2019 Hi Brian, the bracket that the motor sits on does not appear to be available. However it is quite easy to make something that will sort it. Stuart showed a very nice bracket that could be easily bent up and riveted in place. I used two pieces of a plastic material apprx 6" x 2" x 1". The lower piece is bolted to the panel where the motor sits. The other piece bolts on top of that. Finally the motor strap sits on the top piece. I post a pic tomorrow. Because the motor body is round it makes it easy to orientate it. Roger Quote Link to post Share on other sites
Brian Eldred Posted December 30, 2019 Report Share Posted December 30, 2019 Hi Roger, I suspected as much. I found the dimensions of the TR6 bracket on another post so I shall bend one up when I can find some sheet steel. Brian Quote Link to post Share on other sites
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