Hangar Flying => Hangar Flying => Topic started by: Reb Wallace on August 20, 2006, 12:02:05 PM
Title: propellers
Post by: Reb Wallace on August 20, 2006, 12:02:05 PM
newbe question I am flying veze w/0-200 with a warnke almost constant speed prop. 58" dia but dont know the pitch does anyone know how to get the pitch. The only markings on the prop is Almost constant speed. prop is performing well just need info for paperwork. :D :?:
Title: propellers
Post by: spy on August 20, 2006, 09:03:34 PM
hello rob, there are markings on the inside of the hub..you will need to prop off the plane to see this.....if there are none..how anyone know?..
Title: Propellers
Post by: Bruce Hughes on August 21, 2006, 04:19:18 PM
This topic was THOROUGHLY discussed on canard-aviators@yahoogroups a couple of years ago. If I can manage to get the information from the archives, I will summarize it. :)
Bruce Hughes
Title: propellers
Post by: Reb Wallace on August 22, 2006, 04:39:19 PM
I am looking forward for the info . I don't want to remove the prop if I don't have to. I have always had the belief that if it works don't mess with it :lol:
Title: propellers
Post by: maprather on August 23, 2006, 12:43:30 PM
For paperwork purposes, I believe you will have to determine how the prop was marked by the maker. Different prop makers use different standards when it comes to determining the pitch of the prop, so measuring it directly from the prop will get you close but likely not exactly right. Measuring it might suggest that the prop is a 60.5" pitch, but the maker might have originally listed it as a 60" or a 62" (or something else).
If you took pitch measurements from the prop and then could talk to the prop maker, likely they could tell you what the pitch is. Unfortunately, I believe Warnke is no longer making props. It was a family business, but Bernie (?) died a few years ago. I think his wife attempted to take up the business for a while, but I've read that the results weren't so good. Someone else may have a better update.
Since you may not be able to get in touch with Warnke, another idea would be to measure the pitch directly and then compare it with other Warnke props. You'd have to find other Warnke props to compare to, which might actually be harder yet.
Finally, it's quite easy to pull and reinstall a prop. You'll need a good torque wrench, the right socket and wrench, the correct safety wire, some diagonal cutters, and a pair of pliers (to twist safety wire). If you don't have a spinner, you could probably pull and reinstall the prop in less than an hour - even with a spinner. If you don't feel comfortable doing it, a competent mechanic could do it easily. Be sure to maintain the same clocking of the prop and crush plate when reinstalling.
Regards,
Matt-
Title: prop
Post by: eric r on August 23, 2006, 01:31:50 PM
I am curious as to the paperwork that would require knowledge of the prop pitch? As I understand it, it depends on how the mfg based his measurements, and could vary by mfg. BTW, I just received my new Prince composite P-tip and can't wait to try it out ... if nothing else, it is a beautiful piece of workmanship! I have heard pros and cons, and now will find out for myself