UL260i Question - Zenith Aircraft Builders and Flyers2024-03-28T16:35:53Zhttps://zenith.aero/forum/topics/ul260i-question?commentId=2606393%3AComment%3A844870&feed=yes&xn_auth=no
Hello dear friend I have a…tag:zenith.aero,2023-07-03:2606393:Comment:9075902023-07-03T12:08:23.299ZCristian Ernesto de Azevedohttps://zenith.aero/profile/CristianErnestodeAzevedo
<p> </p>
<pre class="tw-data-text tw-text-large tw-ta" dir="ltr" id="tw-target-text"><span class="Y2IQFc" lang="en" xml:lang="en">Hello dear friend<br></br> I have a CH-701 with Ulpower 260IS with a cowl same model as yours and I suffer with very high oil temperatures, on cruise it is around 221. I already changed it for a bigger radiator and I also removed the thermostatic oil valve and it did not help nothing I believe it's a cowl problem because I put wool yarn on the radiator air intake and I…</span></pre>
<p> </p>
<pre class="tw-data-text tw-text-large tw-ta" id="tw-target-text" dir="ltr"><span class="Y2IQFc" lang="en" xml:lang="en">Hello dear friend<br/> I have a CH-701 with Ulpower 260IS with a cowl same model as yours and I suffer with very high oil temperatures, on cruise it is around 221. I already changed it for a bigger radiator and I also removed the thermostatic oil valve and it did not help nothing I believe it's a cowl problem because I put wool yarn on the radiator air intake and I filmed them and they keep spinning and don't show a flow of air coming in. I'm thinking of changing the radiator air intake model.</span></pre> Performance is great. Gets of…tag:zenith.aero,2021-09-08:2606393:Comment:8468652021-09-08T22:20:36.917ZEric Johnsonhttps://zenith.aero/profile/EricJohnson97
<p>Performance is great. Gets off the ground quickly. Uses about 4 gallons per hour. Cruise about 78-80 mph at 2800 RPM, but keep it around 2700 RPM for leisure cruise.</p>
<p>Performance is great. Gets off the ground quickly. Uses about 4 gallons per hour. Cruise about 78-80 mph at 2800 RPM, but keep it around 2700 RPM for leisure cruise.</p> Mine is the iS. How is your p…tag:zenith.aero,2021-09-08:2606393:Comment:8463942021-09-08T02:43:52.201ZChris Elliotthttps://zenith.aero/profile/ChrisElliott
<p>Mine is the iS. How is your performance?</p>
<p>Mine is the iS. How is your performance?</p> A year ago I bought a 701 wit…tag:zenith.aero,2021-09-08:2606393:Comment:8463052021-09-08T01:41:03.997ZEric Johnsonhttps://zenith.aero/profile/EricJohnson97
<p>A year ago I bought a 701 with the 260i engine. It had about 105 hours, now it is up to 140 hours. No problems, runs fine. I'm not sure if it an early version, I suspect it is a later model. The only minor problem was an oil leak at the Hall sensors because the O-rings were too small. There is another thread about that.</p>
<p>A year ago I bought a 701 with the 260i engine. It had about 105 hours, now it is up to 140 hours. No problems, runs fine. I'm not sure if it an early version, I suspect it is a later model. The only minor problem was an oil leak at the Hall sensors because the O-rings were too small. There is another thread about that.</p> Thank you so much!tag:zenith.aero,2021-08-18:2606393:Comment:8449662021-08-18T13:09:22.049ZChris Elliotthttps://zenith.aero/profile/ChrisElliott
<p>Thank you so much!</p>
<p>Thank you so much!</p> Chris, the engine is a 2015…tag:zenith.aero,2021-08-17:2606393:Comment:8448702021-08-17T12:47:08.802ZDavid J. Beaulieuhttps://zenith.aero/profile/DavidJBeaulieu
<p>Chris, the engine is a 2015 model, 17th week and eighth off the line.</p>
<p>UL engines and 100LL --- the general consensus (best I can tell) is that not to run it as a matter of routine. If you do have to use it, try to cut the fuel with a mix of unleaded fuel while maintaning appropriate AKI rating. If you absolutely have to use 100LL on occasion I think it will not be an issue. However if you use it routinely it will require more frequent oil changes. (use non-synthetic oil) and…</p>
<p>Chris, the engine is a 2015 model, 17th week and eighth off the line.</p>
<p>UL engines and 100LL --- the general consensus (best I can tell) is that not to run it as a matter of routine. If you do have to use it, try to cut the fuel with a mix of unleaded fuel while maintaning appropriate AKI rating. If you absolutely have to use 100LL on occasion I think it will not be an issue. However if you use it routinely it will require more frequent oil changes. (use non-synthetic oil) and since CHTs run cool on UL engines and may not get hot enough to burn off lead deposits, maybe expect some problems along those lines.</p>
<p>Cheers!</p> The S/N is 151708. How does i…tag:zenith.aero,2021-08-12:2606393:Comment:8445502021-08-12T20:48:42.058ZChris Elliotthttps://zenith.aero/profile/ChrisElliott
<p>The S/N is 151708. How does it handle 100LL? </p>
<p></p>
<p>Yes I have been watching videos, and reading everything I can find!</p>
<p>The S/N is 151708. How does it handle 100LL? </p>
<p></p>
<p>Yes I have been watching videos, and reading everything I can find!</p> Chris, what makes you think i…tag:zenith.aero,2021-08-12:2606393:Comment:8443292021-08-12T02:28:17.819ZDavid J. Beaulieuhttps://zenith.aero/profile/DavidJBeaulieu
<p>Chris, what makes you think it is an early model engine? The serial number on the engine block will tell you the manufacture year/month/line number. Have you gone to the UL Power website? Lot of info regarding the engines including the UL260i. The engine info specs <span>97 hp @ 3300 rpm / 85 hp @ 2800 rpm.</span></p>
<p><span>FYI...I'm running a 350iS and though I had some "teething" issues (2011 manufacture date), UL has continued to make improvements overall to their engine/systems…</span></p>
<p>Chris, what makes you think it is an early model engine? The serial number on the engine block will tell you the manufacture year/month/line number. Have you gone to the UL Power website? Lot of info regarding the engines including the UL260i. The engine info specs <span>97 hp @ 3300 rpm / 85 hp @ 2800 rpm.</span></p>
<p><span>FYI...I'm running a 350iS and though I had some "teething" issues (2011 manufacture date), UL has continued to make improvements overall to their engine/systems and the tech documentation keeps getting more refined. I assume the same was/is true with the UL260.</span></p>
<p><span>Good luck with your decision!</span></p>
<p><span>Dave</span></p>