Heater Fan - direction

Post by **Cam** » Thu Oct 28, 2004 1:56 pm

Ah right! The only wiper motors I have seen have an arm to the edge of the wheel and so no worm and gear! Mind you I have not stripped a Moggy one down yet. Hence the confusion!

Post by **57traveller** » Thu Oct 28, 2004 3:27 pm

That's o.k. Cam - yes the worm is actually an extension of the armature which in turn engages with a nylon(that's all I've seen) edged gearwheel to which is attached a con rod connected at the end of the cable rack with a crosshead arrangement. So as doobry says it doesn't matter which way the motor turns because the rotary motion is converted to reciprocating without a specific thrust side on the crosshead. Does that make sense?

Post by **Cam** » Thu Oct 28, 2004 4:46 pm

Yes it makes perfect sense and is actually what I have seen (thinking about it), but I forgot about how the motor turns the gearwheel at 90 degrees (wake up at the back there!!

). You will have to excuse me as it was a Mini 2 speed wiper motor about 10 years ago!! It seems they are pretty much the same then.... as you would expect

Post by **Kevin** » Thu Oct 28, 2004 4:51 pm

Well I was confused as I missed a couple of postings and wondered which part of the heater motor this was on about

but then i read the missing postings

Post by **57traveller** » Fri Oct 29, 2004 9:28 am

Yes, it went off at a bit of a tangent there Kevin.