"unclevanos (Ovaltine Jenkins)" (unclevanos)
05/26/2015 at 12:53 • Filed to: Oppo advice
0
6|
"unclevanos (Ovaltine Jenkins)" (unclevanos)
05/26/2015 at 12:53 • Filed to: Oppo advice | 0
| 6 |
Can anyone help me out how to measure gear pitch and the dimensions of the gear teeth? I recently replaced the power rear sunshade and repainted the faded fabrics. The original sunshade mechanism works great but the fiber gear is stripped which caused an ungodly sound and a stuck sunshade. The engineers decided to use a fiber gear while turning a pot metal gear, not a good choice. If anyone can give some insight I would appreciate it.
TheHondaBro
> unclevanos (Ovaltine Jenkins)
05/26/2015 at 12:56 |
|
If the gears were bigger, I’d suggest a pair of calipers, but it looks like calipers would be a pain on such a small gear. If it’s OEM you might have luck on the internet.
Arch Duke Maxyenko, Shit Talk Extraordinaire
> unclevanos (Ovaltine Jenkins)
05/26/2015 at 12:57 |
|
http://www.srmuniv.ac.in/downloads/ME04…
MasterMario - Keeper of the V8s
> unclevanos (Ovaltine Jenkins)
05/26/2015 at 13:02 |
|
your best bet is to find the supplier for the mechanism and see if you can find a part number/replacement part. otherwise measuring the necessary dimensions to get a new gear to fit is your only other option.
|
unclevanos (Ovaltine Jenkins)
> Arch Duke Maxyenko, Shit Talk Extraordinaire
05/26/2015 at 13:03 |
|
thanks!
|
unclevanos (Ovaltine Jenkins)
> TheHondaBro
05/26/2015 at 13:05 |
|
Bmw only sells the sunshade motor at a whopping $200 last time I checked. Gear is not sold.
justAnother G6
> unclevanos (Ovaltine Jenkins)
05/26/2015 at 13:13 |
|
There are a number of different ways of measuring Gear pitch. Based on the picture I would guess 36 or 48 pitch. Though, most of my experience is in cutting gears with a 10% pressure angle. Typically we would use a micrometer (regular it the teeth were large enough, disk if they were too small) or use a known size of pins across the diameter of the gear along with a pressure micrometer. A third way of checking would be to have a master gear and a run-out testing block, though those are specific measuring equipment that one would not likely invest in if you weren’t making gears for a living.
The fabric gears were likely used to reduce the amount of noise generated