Robert Riat
  • Wamego, KS
  • United States
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Robert Riat's Discussions

Oil cooler

Started May 23 0 Replies

Finished my first condition inspection on my stol 750/UL350is this past weekend and also changed out the oil cooler to an Aero Classic 13 row cooler hoping for cooler oil temps this summer.  I didn’t…Continue

New donut suspension

Started Feb 12 0 Replies

Easy to install on new build, will probably need further adjustment.…Continue

Bad idea?

Started this discussion. Last reply by Robert Riat Aug 13, 2018. 6 Replies

I plan to start building a 601XL this Winter and want to put a 0-200 in it. I did transition training with Buzzy earlier this year and his 0-200 in the 750 seemed to perform well.  I’ve been looking…Continue

Oil cooler

Started this discussion. Last reply by Robert Riat Aug 7, 2018. 2 Replies

I  now have 50 hours on my UL 350is and my oil temps. are running high so I purchased a13 row Aero classic oil cooler from Ray and plan to install it while doing the 50 hour maintenanceas directed by…Continue


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Robert Riat posted a discussion

Oil cooler

Finished my first condition inspection on my stol 750/UL350is this past weekend and also changed out the oil cooler to an Aero Classic 13 row cooler hoping for cooler oil temps this summer.  I didn’t do a great job fitting it to the cowl (it is a little bit of a job) but yesterday I relocated the plane to Nebraska because of threatening flood waters at our airport in Kansas and was surprised to have a 20 degree F.drop in my oil temps.  Seems like UL should recommend the larger cooler to start…See More
May 23

Profile Information

Aircraft Model
STOL CH 750, Zenith CH 650
Project Status
Building From
Engine installed (or plan to install)
UL Power
Building Experience
Have already built an airplane
Flying Experience
Private Pilot
Home Airport (ie. KMYJ)

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Comment Wall (11 comments)

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At 7:27pm on October 27, 2019, Denton Kopietz said…

Robert, I agree that it is a long drive. I have family in NE Nebraska, a 19 hour drive.

At 1:04pm on October 21, 2019, richard nance said…
I would love to come look at what you have.
At 12:50pm on October 21, 2019, richard nance said…
Hey Robert I will look into how far you are
At 3:41pm on October 20, 2019, Ian Robb said…

Yes, that would be very tempting, if you were closer. I assume you don't want to separate the plans.

At 7:37am on August 27, 2019, Douglas Kupersmith said…


The inboard return line works fine.  I haven't flown yet, but I have just over 2 hours of run time on the engine and having the return line on the inboard end of the fuel tank seems to work fine. Due to the wing dihedral, the inboard end will always be the "deepest" end of the tank. Couple that with the constant sloshing during flight, and the fuel cooling should not be an issue.

At 9:04pm on July 9, 2019, Robert M said…
Thank you for reaching out to me. I actually bought the plane June 29, 2019. I have only flown it about 7 hours as I went out of town for the 4th. I spoke with Joyce at Zenith and she provided me a list of builders in the area and you were on the list I was going to reach out to. I would absolutely like to get to know others in the area that have Zenith aircraft as I think it could be fun flying around together and pointers on modifications etc. I have the plane located at Emporia Ks KEMP but will be moving it home when I get comfortable build some time. Get power off landings down in the case of an emergency situation. I also am in the process of ordering a new door as when the plane was being delivered opened during flight and broke apart. It was the fiberglass frame 3rd generation build. So I am doing a lot of firsts right now. Unfamiliar plane, engine, instruments, and no doors. I am new to this forum and unsure if can send any private messages. Feel free to email me and can exchange numbers.
At 6:03pm on February 24, 2019, Richard Bell said…

Thanks Robert,

I have to pick it up in Minnesota, so it will be a month or so before I get up there. I know the canopy, front gear and rudder were all damaged. I wont know more till I pick it up.

Feel free to write me direct at

Richard Bell

At 1:56pm on January 22, 2019, Allan Gratia said…

Thanks, Robert.  I will be talking to the UL people at Sebring this weekend.

At 12:59pm on January 22, 2019, Allan Gratia said…

Thanks, Robert.  May I ask what the cost of your UL350 was with prop and all other additions?

At 9:33pm on October 1, 2018, Jacob Gayer said…

I am early in planning. So far torn between the 750SD and the 801SD. Trying to find one of each near by that I can get it, get a feel for. Had a 701 fly through McPherson (I live there on the weekend but stay in Topeka during the week). I believe he is based out of Derby, KS. No one was around the plane so I didn't want to do more then an external walk around.


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