Mehmet looked all over and can't find the dimensions. Good call on the photoshop On Sunday, August 17, 2014, Alessandro Cesar Dias Gomes Filho < acgfilho@xxxxxx> wrote: > Do they not have a datasheet? > > Also, whoever does this might want to do a perspective crop on the picture > in Photoshop to make sure it is isometric. > > > On Sun, Aug 17, 2014 at 2:24 AM, Armor Harris <armorharris@xxxxxxxxx > <javascript:_e(%7B%7D,'cvml','armorharris@xxxxxxxxx');>> wrote: > >> Hey guys, >> >> We need someone back at the lab to measure the old e-regulator servo >> spline. Looks something like this >> >> http://www.servocity.com/html/hitec_servo_splines.html#.U_A6QvldV8E >> >> >> I think the best procedure here is to use a high resolution camera (read: >> not an iphone) to take a perfectly 2D picture of the servo spline with a >> pair of micrometers set to a known distance on the same plane as the servo >> spline (calipers probably aren't accurate enough unless they're really nice >> ones). >> >> Then, someone can use imageJ to measure the length in pixels of each >> spline tooth and use the distance between the micrometers in the same plane >> as a pixel to length ratio. ImageJ makes it really easy. >> >> I've done this before on another application, I used an SLR with a stock >> lens and a tripod and it worked pretty well. The setup was in a difficult >> environment but I was still able to get accuracy of less than .001" You can >> probably do better since it's in a well lit lab environment and you can >> control the photo a lot better. I would suggest is setting up the camera >> for maximum contrast so that when you zoom in, you can still see sharp >> lines. >> >> Once we get that measured, we want to try using wire EDM to machine our >> own attachments for high precision valves like the thrust vector control >> and the throttle valve. This could potentially make our servo driven valves >> a lot more reliable and rugged, so it's a really big deal if we're able to >> do this. >> >> Anyone up for it? >> >> Armor >> > > -- Sent from my phone