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 <[email protected]> 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/[email protected]/. 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 [email protected]
