Zenith "Donut" Nose Gear Suspension Installation and Testing - Zenith Aircraft Builders and Flyers2024-03-28T20:57:30Zhttps://zenith.aero/forum/topics/zenith-donut-nose-gear-suspension-installation-and-testing?commentId=2606393%3AComment%3A878530&feed=yes&xn_auth=noHas anyone confirmed the shor…tag:zenith.aero,2023-10-30:2606393:Comment:9162962023-10-30T14:56:48.117ZJason Rhttps://zenith.aero/profile/JasonR
<p>Has anyone confirmed the shore hardness of the pucks as received from Zenith? I've seen guesses around 25-30 Shore and that they were softer than what people expected them to be.</p>
<p></p>
<p>JR</p>
<p>Has anyone confirmed the shore hardness of the pucks as received from Zenith? I've seen guesses around 25-30 Shore and that they were softer than what people expected them to be.</p>
<p></p>
<p>JR</p> I have installed the pucks on…tag:zenith.aero,2023-04-02:2606393:Comment:8978482023-04-02T22:00:57.481ZGeoff Storeyhttps://zenith.aero/profile/GeoffStorey
<p>I have installed the pucks on my 701 and they work fantastic smooth steering on the ground and in the air best thing I have done to it </p>
<p>Geoff</p>
<p>I have installed the pucks on my 701 and they work fantastic smooth steering on the ground and in the air best thing I have done to it </p>
<p>Geoff</p> First report like this I've h…tag:zenith.aero,2023-04-02:2606393:Comment:8977602023-04-02T18:18:33.083ZJohn Austinhttps://zenith.aero/profile/JohnLAustin
<p>First report like this I've heard of, David - everyone else seems to universally report much easier steering and lower rudder pedal pressure required. In flight, the steering pins should be resting on the lower bearing block. (Push the tail down and get the nosewheel off the ground and it should fall into the lower bearing block and self-center with the pins in the angles.) On the ground, the pins should lift up out of the angles when the nosewheel is bearing the full weight of the nose. …</p>
<p>First report like this I've heard of, David - everyone else seems to universally report much easier steering and lower rudder pedal pressure required. In flight, the steering pins should be resting on the lower bearing block. (Push the tail down and get the nosewheel off the ground and it should fall into the lower bearing block and self-center with the pins in the angles.) On the ground, the pins should lift up out of the angles when the nosewheel is bearing the full weight of the nose. Only thing I can think of is did you clean the strut of any paint, powder coat, etc. where the pucks slide and also in the area that slides through the bearing block? If that doesn't work, perhaps a consult with Roger at Zenith might help - if he comes up with a solution, let us know!</p>
<p>John</p> Hi again John, did some groun…tag:zenith.aero,2023-03-29:2606393:Comment:8972352023-03-29T12:58:24.574ZDavid Frydayhttps://zenith.aero/profile/DavidFryday
<p>Hi again John, did some ground and flight testing with the new puck system and I must admit I'm not 100% impressed. The steering on the ground is stiffer than it was with the bungee. (Maybe this will take some time to work itself). In the air it is almost to loose and free...there is no self centering of the nosewheel as the lower pins are above the lower bearing angles. Almost seems like there should be another puck (#11) to allow the lower bearing to work properly. Everything is well lubed…</p>
<p>Hi again John, did some ground and flight testing with the new puck system and I must admit I'm not 100% impressed. The steering on the ground is stiffer than it was with the bungee. (Maybe this will take some time to work itself). In the air it is almost to loose and free...there is no self centering of the nosewheel as the lower pins are above the lower bearing angles. Almost seems like there should be another puck (#11) to allow the lower bearing to work properly. Everything is well lubed so I don't think that is an issue. I have tensioned per previous reply and pics above so I'm not sure where to go next.</p>
<p>Cheers,</p>
<p>Dave</p> Your measurement of the puck…tag:zenith.aero,2023-03-18:2606393:Comment:8963892023-03-18T20:16:26.611ZJohn Austinhttps://zenith.aero/profile/JohnLAustin
<p>Your measurement of the puck stack looks OK to me. I, too, have a light engine (Jabiru 3300) and my stack height was exactly 200 mm. and the system performs well and feels compliant when hitting bumps.</p>
<p>John</p>
<p>Your measurement of the puck stack looks OK to me. I, too, have a light engine (Jabiru 3300) and my stack height was exactly 200 mm. and the system performs well and feels compliant when hitting bumps.</p>
<p>John</p> Thanks for the guidance John!…tag:zenith.aero,2023-03-18:2606393:Comment:8963762023-03-18T15:41:29.436ZDavid Frydayhttps://zenith.aero/profile/DavidFryday
<p>Thanks for the guidance John! I installed the retrofit puck system in my CH750 STOL ready for ground and flight test. The installation went relatively smooth following the instructions and I had plenty of space to work between engine (UL Power 350IS) and firewall. The instructions do not provide any guidance on what constitutes proper tensioning but I think I have it right as I tensioned twice and squeezed the pucks up as best I could. I have attached a few picks on where the gear strut sits…</p>
<p>Thanks for the guidance John! I installed the retrofit puck system in my CH750 STOL ready for ground and flight test. The installation went relatively smooth following the instructions and I had plenty of space to work between engine (UL Power 350IS) and firewall. The instructions do not provide any guidance on what constitutes proper tensioning but I think I have it right as I tensioned twice and squeezed the pucks up as best I could. I have attached a few picks on where the gear strut sits relative to the upper and lower bearings.</p>
<p>Cheers,</p>
<p> Dave</p> Loose they are 3/4" thick.
tag:zenith.aero,2023-02-20:2606393:Comment:8929532023-02-20T00:12:59.300ZDarren Millerhttps://zenith.aero/profile/DarrenMiller
<p>Loose they are 3/4" thick.</p>
<p></p>
<p>Loose they are 3/4" thick.</p>
<p></p> Bought from Zenith recently.tag:zenith.aero,2023-01-11:2606393:Comment:8888822023-01-11T19:29:32.636ZJoe Hopwoodhttps://zenith.aero/profile/JoeHopwood
<p>Bought from Zenith recently.</p>
<p>Bought from Zenith recently.</p> Good morning builders
Does a…tag:zenith.aero,2023-01-11:2606393:Comment:8888792023-01-11T15:39:39.438ZJason Rhttps://zenith.aero/profile/JasonR
<p>Good morning builders</p>
<p></p>
<p>Does anyone have the dimensions of the pucks? I know they are 3" round and 2" ID, but what about thickness? Secondly, has anyone found a source for these or know what Shore hardness they are?</p>
<p></p>
<p>Thanks!</p>
<p></p>
<p>JR</p>
<p>Good morning builders</p>
<p></p>
<p>Does anyone have the dimensions of the pucks? I know they are 3" round and 2" ID, but what about thickness? Secondly, has anyone found a source for these or know what Shore hardness they are?</p>
<p></p>
<p>Thanks!</p>
<p></p>
<p>JR</p> Sorry, Zenith supplied a draw…tag:zenith.aero,2022-09-26:2606393:Comment:8785302022-09-26T19:26:18.305ZJohn Austinhttps://zenith.aero/profile/JohnLAustin
<p>Sorry, Zenith supplied a drawing with the kit but the parts are not dimensioned.</p>
<p>John</p>
<p>Sorry, Zenith supplied a drawing with the kit but the parts are not dimensioned.</p>
<p>John</p>