Guys, Further to my question last week re.wooden two blade props on the KR2:I managed to track down mr Chris Lodge (he has over the years,made in excess of 1000 propellors in mahogany) He has retired now,but told me that the wood he had sourced from South America is now unavailable.There has been some kind of govermental deal re.rainforrest decimation etc that has effectively placed an embargo on importation of this fine wood to the U.K.
The recommended torque value for the wooden two blader on the V.W. is 10/12 ft/lbs Brass leading edge cuffs will protect the prop against heavy rain,but this is still best avoided. Check the torque values at say 20 hours and always wire lock bolts. Check torque values if the aircraft has not flown over seasonal change periods. (wood breathes,so climatic changes may alter bolt tension. There you have it,not too scientific but hope its helpfull info...... mark >From: Pete Diffey <pe...@heroic.co.uk> >Reply-To: KRnet <kr...@mylist.net> >To: KRnet <kr...@mylist.net> >Subject: Re: KR> My Purchase of KR-2 in Iowa! - Wood Prop Questions >Date: Fri, 08 Dec 2006 17:16:12 +0000 > >Mark Langford wrote: > > Larry H. wrote: > > > > > >> I am curious if any of you ever have to re-torque, or if any of you >ever > >> check the torque values of your wooden props. > >> One more question would be, what is your torque values on your props. > >> > > > > The exact wood species that the prop is made of would make a difference, >so > > I'd say the first place to ask that question would be the manufacturer. > > Having said that, Sensenich recommends something like 15-20 ft-lbs (it's >on > > their website somewhere) but when I torqued mine to 15 ft-lbs I hear >wood > > "cracking", so I don't torque it that tight. I have to qualify that, > > because I use metal locknuts, which have a "running torque" (the torque >it > > t >Hi Mark, > >Props are one of those things that I think need wire locking, or at >least tab washers. > >Yep it quite dis-concerting when you hear the wood cracking as you >tighten... > >Pete > > > >_______________________________________ >Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp >to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net >please see other KRnet info at http://www.krnet.org/info.html _________________________________________________________________ Find Singles In Your Area Now With Match.com! msnuk.match.com
