Malbaby Posted April 18, 2022 Report Share Posted April 18, 2022 Hi Guys...What is the main difference between the 2 speed TR4A motor and the 2 speed TR6, apart from the physical differences. Is the TR6 motor a higher wattage? Quote Link to post Share on other sites
RobH Posted April 18, 2022 Report Share Posted April 18, 2022 I believe both motors are the same wattage. On the '4A motor the fast speed is obtained by weakening the field strength which means more speed but less torque. The '6 wiper motor uses an extra brush in a different position on the commutator to get the faster speed, so doesn't lose torque. The other differences are the extra wiring for the self-park function and the completely different switch. Quote Link to post Share on other sites
RogerH Posted April 19, 2022 Report Share Posted April 19, 2022 Hi Mal, they are very different beasts. The TR6 (14W) motor is very powerful in both speeds compared to the TR4A DR3 motor The TR6 motor uses a totally different switch from the DR3 and is essential to make it work as it should. In terms of operating power there is no comparison. If you hold a TR6 wiper blade and turn the wiper on the car will flip over honest. It will wipe a dry screen with no problems. If you are considering swapping from DR3 to 14W then you can use the existing wheel boxes (awkward job to replace) and rack BUT you will need a new 90 or 95 degree gear wheel for the 14W motor. This increase the torque of the standard TR6 14W motor. SVC stock all the parts https://www.s-v-c.co.uk/category/wiper-systems-and-part/ Roger Quote Link to post Share on other sites
BlueTR3A-5EKT Posted April 19, 2022 Report Share Posted April 19, 2022 TR 6 motor is a permanent field magnet type (same as the PI pump) as against an electrical field coil magnet type on the TR2-5 Quote Link to post Share on other sites
trchris Posted April 19, 2022 Report Share Posted April 19, 2022 does anyone have the details of swopping over wiper motors or is there a link to a previous thread? Chris Quote Link to post Share on other sites
RobH Posted April 19, 2022 Report Share Posted April 19, 2022 (edited) Try these Chris: Edited April 19, 2022 by RobH Quote Link to post Share on other sites
Malbaby Posted April 19, 2022 Author Report Share Posted April 19, 2022 Thanks guys...very helpful. Quote Link to post Share on other sites
Andy Moltu Posted April 20, 2022 Report Share Posted April 20, 2022 Presumably the 6 has 3 live feeds? Slow, fast and a permanent one for park? Quote Link to post Share on other sites
RobH Posted April 20, 2022 Report Share Posted April 20, 2022 (edited) Like this Andy: (acknowledgement to Steves_TR6 who posted this diagram in Feb.) Edited April 20, 2022 by RobH Quote Link to post Share on other sites
Malbaby Posted April 20, 2022 Author Report Share Posted April 20, 2022 On 4/19/2022 at 5:30 PM, RogerH said: Hi Mal, they are very different beasts. The TR6 (14W) motor is very powerful in both speeds compared to the TR4A DR3 motor The TR6 motor uses a totally different switch from the DR3 and is essential to make it work as it should. In terms of operating power there is no comparison. If you hold a TR6 wiper blade and turn the wiper on the car will flip over honest. It will wipe a dry screen with no problems. If you are considering swapping from DR3 to 14W then you can use the existing wheel boxes (awkward job to replace) and rack BUT you will need a new 90 or 95 degree gear wheel for the 14W motor. This increase the torque of the standard TR6 14W motor. SVC stock all the parts https://www.s-v-c.co.uk/category/wiper-systems-and-part/ Roger Thanks Roger...I have a later model wiper motor, the gear wheel is marked at 100deg.... Using the 4A wiper wheel boxes you recommend 90 or 95 gear wheel... Is one a better option than the other? Quote Link to post Share on other sites
RogerH Posted April 21, 2022 Report Share Posted April 21, 2022 Hi Mal, when I chose a gear wheel size I calculated (haphazardly) 90 degrees. Upon switch on 95 would have given a very small improvement However 90' does a good job. Using 100' I think you would overrun the glass edge by along way. Roger Quote Link to post Share on other sites
Steves_TR6 Posted April 21, 2022 Report Share Posted April 21, 2022 Hi Mal if you need any tips on wiring the ‘surprisingly sophisticated’ tr6 wiper motor just ask steve Quote Link to post Share on other sites
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