Greetings, Larry. I worked in Oklahoma City from 1983 until 1989. I spent many weekends, at Riverside / Jenks Airport / Richard L Jones airport,( these are one and the same) and Dan and Tom Diehl's workshop.. Alvin and Calvin were indeed Twins and they grew up in Ponca City, OK. Parents were still there when I met Alvin.. Al may have worked in Arkansas, but told me he grew up in Ponca City and shared stories about it. When Al was building his KR, a close friend of his was building one exactly like it. Dan made up a couple of engine cases, with a provision to run a Vacuum Pump, as both were installing a full IFR panel. I was at Dan's when these two came up for a weekend, to grind clearances on their engine cases, and camshafts, for clearing their Stroker Crankshafts. Both were 2180 cc. Along the way, the other fellow lost interest, or something, and another friend of Alvin's bought it and was still building, when Alvin died. Money was what slowed down his progress, and I never heard if he finished it. One year at Christmas or Thanksgiving time, Alvin called me and said " John, you just saved my life. I said what? Well you see, often, Alvin's oil pressure gauge would just drop to 0, and it had happened so many times, that he just expected it was ok. He had changed out the electric transmitter, and it still kept randomly going to 0 and sometimes come back up. It bothered me, so I suggested he get a mechanical Oil pressure gauge. I had some left over stainless wire braded hose, and fittings, and gave it to him. He was leaving Ponca City, after visiting his folks, and it was a really cold morning. On engine start, he said his oil pressure gauge was nearly pegged, ( 100 PSI ) gauge), due to the cold temps. On the takeoff roll, he lifted the tail, and saw the oil pressure drop to ZERO.). He told me that had he not put in the mechanical gauge, he would have kept going, on his way back to Texas. He shut it down, and pulled off to the side of the runway. When he got out, he saw the oil streak on the runway behind his plane. The Oil cooler had blown apart. Calvin, Alvin's twin, bought his KR , and it had a History. Lance Niebauer built it, and it was called Sweet Mildred, after Lance's mother. It had changed hands a few times before Calvin acquired it. At one point Sweet Mildred was on a used car lot. Calvin worked for the Diehl's for quite some time, and he installed a Diehl Tri Gear in Sweet Mildred. Calvin flew "chase " when I got my repaired KR2 back in the air. I have a video of this, from 1999. I test flew both first flights from Riverside, and Dan took the videos, both times. Calvin sold his KR at one point, but I do not know any more about where it went. Hope this answers your questions, Larry. PS I do have more Oldtimer stories. Did you all know Ernest Koppe, worked at Diehl's for a while, too? I spent 5 days, worked along side him on one of Dan's Amphibious Ultralight projects.
-----------------------------------------From: "Flesner via KRnet" To: krnet@list.krnet.org Cc: "Flesner" Sent: Wednesday May 3 2023 6:56:46PM Subject: KRnet> question for old timers A question for those around during the early days of the KR. There were two brothers or cousins with the last name of Campbell. I'm not sure of their first names. Was one of their names Keith and were they from the Midwest, Iowa to be more specific? The reason I ask is that a friend of mine took their RV10 fuel tank to a shop in Iowa for repair and one of the owners of the shop is Keith Campbell and he indicated he built a KR1 many years ago. I seem to recall hearing their names back in the 90's at different Gatherings. Inquiring minds want to know. Larry Flesner -- KRnet mailing list KRnet@list.krnet.org https://list.krnet.org/mailman/listinfo/krnet />
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