You could chuck your drums up in a lathe and do a light cut and true them up and hold better on run up. Worked for me
On Wed, Feb 10, 2021 at 12:01 PM Dr. Feng Hsu via KRnet < krnet@list.krnet.org> wrote: > Thank so much Parley for the excellent information on converting the Rand > Robinson drum breaks into Hydraulic breaks. Since you have done your > conversion nearly 30 years ago, so I don't think Aircraft Spruce still > offer anything like that for my KR2 which can fit into the same landing > gear structure for the same retractable configuration...?! > > Anyways, I just saw very encouraging reply from Mr. Colin (from UK perhaps) > about converting into disk break with the same RR cable drum breaks... so I > may want to try just that. I guess my easiest and most cost effective > solution or experimenting on the break would be to first change the > existing problematic drums with high quality part as you suggested? I hope > I could still order a pair of high quality drums from somewhere (which just > fit my wheels) like you suggested? I am hesitating to go for the major > modifications (on both landing gear and break systems) is trying not to put > extra weight on the bird, simply because I still like the design specs on > speed and fuel consumptions according to KR's original design objectives, > and hopefully it was not a exaggeration in the first place ... Frankly, the > exciting KR design spec was the real bat that got me into this "deep > woods".... I understand KR's design was trying to achieve cruise speed at > around 185 mph with maximum of 200mph, and fuel consumptions only at around > 3.5 to 4 gph and I was told the VW engine (2100D) can burn automobile > gasoline without serious safety issues....?! > > Kindest regards, > > Dr. Hsu > ABQ NM - Houston TX area > USA > 713 513 0423 > > On Tue, Feb 9, 2021, 5:46 PM Parley Byington <byington1...@cox.net> wrote: > > > Dr. Feng > > > > I just read your post on the net concerning brakes and on the kr2 retract > > system and seen my name listed as someone to contact concerning info > about > > it. > > > > Yes I converted the original drum setup bought from Rand Robinson to full > > hydraulic differential rakes while maintaining the ability to retract > the > > gear. > > > > I bought Matco disc brakes that easily fit on the existing wheels and > they > > didn’t cause any interference problems with the retraction of the gear. > > > > I bought these. Brakes from Aircraft Spruce out of California. I used > > “grease gun flexible hoses, bought from NAMPA auto for the brake lines > from > > the pedals to the rotating spring bar. I have had NO problems with the > set > > up since installed back in 1992. > > > > The grease gun hoses are rated at plenty of pressure to hold brake > > pressure and were very reasonably priced (under $20.00 for two). They > also > > are available in se wrap different lengths. > > > > Let me know if more information is needed. > > > > Signed > > Parley Byington > > KR-2 N54PB 1835VW turbocharged > > Vietnam era veteran > > Henderson Nevada USA > > > > Sent from my iPhone > > > > > _______________________________________________ > Search the KRnet Archives at > https://www.mail-archive.com/krnet@list.krnet.org/. > Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options. > To UNsubscribe from KRnet, send a message to krnet-le...@list.krnet.org > _______________________________________________ Search the KRnet Archives at https://www.mail-archive.com/krnet@list.krnet.org/. Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options. To UNsubscribe from KRnet, send a message to krnet-le...@list.krnet.org
