Re: Pietenpol-List: Piet People near Austin & Replies to 50 Hour Report
Posted: Wed Jan 06, 2010 5:22 am
Original Posted By: Ken Chambers
>This is confusing.You ask why you would need the cables to adjust the leading edge, and then you say that you would just shim the horizontal stab at the leading edge and re-adjust the cable tension to suit. That sounds to me like you're going to need your cables to adjust the leading edge.Every time the shimming is adjusted, all of your cable tensions will need to be adjusted as well, since the cable attachment points are not the same as the stab pivot point.A simple and effective method used by many builders for fine tuning the tail incidence , is achieved by simply adjusting the bracing cables, which DOES put a slight twist into the horizontal stab - but it is minor (probably visually imperceptible unless you're looking for it) - it is only for fine tuning.So, the short answer to your original question:"Sound, worthy idea or a waste?"would be the latter, but I guess you've already come to that conclusion.There are alternate methods possible, but turnbuckles are likely the most practical solution. If you use a swaged stud with a threaded fork, it will look nice and clean, but you'll have a difficult time making adjustments, as you'll have to disconnect the fork from the bracket, turn in or out the adjustment, then pull the cable tight to re-With turnbuckles, the tension adjustments are done with all of the cables in place.Bill C.Read this topic online here:http://forums.matronics.com/viewtopic.p ... 3#280363le, List Admin.________________________________________________________________________________Date: Wed, 6 Jan 2010 11:30:37 -0600Subject: Re: Pietenpol-List: Piet People near Austin & Replies to 50 Hour ReportPost
>This is confusing.You ask why you would need the cables to adjust the leading edge, and then you say that you would just shim the horizontal stab at the leading edge and re-adjust the cable tension to suit. That sounds to me like you're going to need your cables to adjust the leading edge.Every time the shimming is adjusted, all of your cable tensions will need to be adjusted as well, since the cable attachment points are not the same as the stab pivot point.A simple and effective method used by many builders for fine tuning the tail incidence , is achieved by simply adjusting the bracing cables, which DOES put a slight twist into the horizontal stab - but it is minor (probably visually imperceptible unless you're looking for it) - it is only for fine tuning.So, the short answer to your original question:"Sound, worthy idea or a waste?"would be the latter, but I guess you've already come to that conclusion.There are alternate methods possible, but turnbuckles are likely the most practical solution. If you use a swaged stud with a threaded fork, it will look nice and clean, but you'll have a difficult time making adjustments, as you'll have to disconnect the fork from the bracket, turn in or out the adjustment, then pull the cable tight to re-With turnbuckles, the tension adjustments are done with all of the cables in place.Bill C.Read this topic online here:http://forums.matronics.com/viewtopic.p ... 3#280363le, List Admin.________________________________________________________________________________Date: Wed, 6 Jan 2010 11:30:37 -0600Subject: Re: Pietenpol-List: Piet People near Austin & Replies to 50 Hour ReportPost