Scary climb performance at max gross weight - Zenith Aircraft Builders and Flyers2024-03-29T15:58:02Zhttps://zenith.aero/forum/topics/scary-climb-performance-at-max-gross-weight?commentId=2606393%3AComment%3A681555&feed=yes&xn_auth=nohi mark
did the performance g…tag:zenith.aero,2021-10-03:2606393:Comment:8491532021-10-03T00:41:29.966ZNico Pereirahttps://zenith.aero/profile/NicoPereira
<p>hi mark</p>
<p>did the performance got better? im interested in knowing how it performs specially with passenger</p>
<p>hi mark</p>
<p>did the performance got better? im interested in knowing how it performs specially with passenger</p> Jeff,
The 2014 WW Conversion…tag:zenith.aero,2019-12-13:2606393:Comment:7027812019-12-13T05:50:27.367ZSkip Rhudyhttps://zenith.aero/profile/SkipRhudy
<p>Jeff,</p>
<p>The 2014 WW Conversion manual recommends 66 for a 2700, 68 for a 3000. There are a lot of changes between the 2006 and 2014 manuals. I'm still cleaning my core, so I'm nowhere near where you guys are. I recommend the new manual, in particular the prop section recs come explains why WW is recommending those sizes.</p>
<p></p>
<p>And there is a facebook group, WW Flycorvair, where answers to questions like this are answered by William usually direct.</p>
<p>Jeff,</p>
<p>The 2014 WW Conversion manual recommends 66 for a 2700, 68 for a 3000. There are a lot of changes between the 2006 and 2014 manuals. I'm still cleaning my core, so I'm nowhere near where you guys are. I recommend the new manual, in particular the prop section recs come explains why WW is recommending those sizes.</p>
<p></p>
<p>And there is a facebook group, WW Flycorvair, where answers to questions like this are answered by William usually direct.</p> How's the climb and cruise pe…tag:zenith.aero,2019-06-29:2606393:Comment:6820072019-06-29T00:02:32.105ZTim Crumleyhttps://zenith.aero/profile/TimCrumley
<p>How's the climb and cruise performance now?</p>
<p>How's the climb and cruise performance now?</p> An interesting tidbit I learn…tag:zenith.aero,2019-06-24:2606393:Comment:6815552019-06-24T22:54:56.793ZMark Baenenhttps://zenith.aero/profile/MarkBaenen
An interesting tidbit I learned - all Warp Drive props start out the same length and are cut down as needed to fit the spec. SOOO, start out big and adjust from there.<br />
Mark
An interesting tidbit I learned - all Warp Drive props start out the same length and are cut down as needed to fit the spec. SOOO, start out big and adjust from there.<br />
Mark Bill, thanks.
my manual is al…tag:zenith.aero,2019-06-23:2606393:Comment:6812282019-06-23T18:51:53.354ZJEFF COCHRANhttps://zenith.aero/profile/JEFFCOCHRAN
<p>Bill, thanks.</p>
<p>my manual is also copyrighted 2007 on the front cover, but page 97 is about the cowling. So it looks like it was changed without being revised. As an engineer that always bothers me. My manual purchased around 2010 has no mention of the CH750, not even the CH650.</p>
<p></p>
<p>I bought my Warp Drive from WW for my 750 and it was a 68”. So since then he must have changed his recommendations.</p>
<p>Jeff</p>
<p>Bill, thanks.</p>
<p>my manual is also copyrighted 2007 on the front cover, but page 97 is about the cowling. So it looks like it was changed without being revised. As an engineer that always bothers me. My manual purchased around 2010 has no mention of the CH750, not even the CH650.</p>
<p></p>
<p>I bought my Warp Drive from WW for my 750 and it was a 68”. So since then he must have changed his recommendations.</p>
<p>Jeff</p> Jeff,
The installation manua…tag:zenith.aero,2019-06-23:2606393:Comment:6813752019-06-23T15:54:56.190ZBill Hutsonhttps://zenith.aero/profile/BillHutson
<p>Jeff,</p>
<p></p>
<p>The installation manual I recently received (dated 2007) has paragraphs specifically addressing the 750. The specific paragraph I mentioned above is on page 97 and discusses props for the 750 with both a 2700 cc and the 3100 cc. </p>
<p></p>
<p>Bill</p>
<p>Jeff,</p>
<p></p>
<p>The installation manual I recently received (dated 2007) has paragraphs specifically addressing the 750. The specific paragraph I mentioned above is on page 97 and discusses props for the 750 with both a 2700 cc and the 3100 cc. </p>
<p></p>
<p>Bill</p> Bill,
Is there really an up d…tag:zenith.aero,2019-06-23:2606393:Comment:6814682019-06-23T12:58:35.644ZJEFF COCHRANhttps://zenith.aero/profile/JEFFCOCHRAN
<p>Bill,</p>
<p>Is there really an up dated installation manual that covers the CH750? My installation manual is for the CH601 and it recommends a 66” warp drive for the CH601. For the CH750 I thought WW recommenced the 68”.</p>
<p></p>
<p></p>
<p>Bill,</p>
<p>Is there really an up dated installation manual that covers the CH750? My installation manual is for the CH601 and it recommends a 66” warp drive for the CH601. For the CH750 I thought WW recommenced the 68”.</p>
<p></p>
<p></p> Hi Mark!
Thanks for posting…tag:zenith.aero,2019-06-13:2606393:Comment:6801142019-06-13T23:55:48.614ZBill Hutsonhttps://zenith.aero/profile/BillHutson
<p>Hi Mark!</p>
<p></p>
<p>Thanks for posting an update of your progress and congratulations on getting to the bottom of the power issue. I will be assembling my 3.0 in a couple of weeks and hopefully mounted on my 750 STOL shortly afterwards. Since I haven't run my engine yet, I haven't much I could add to your issue (sorry) except what I have read in the manuals. I checked my engine installation manual section on prop choices it suggested that the best overall performance for a 750 with…</p>
<p>Hi Mark!</p>
<p></p>
<p>Thanks for posting an update of your progress and congratulations on getting to the bottom of the power issue. I will be assembling my 3.0 in a couple of weeks and hopefully mounted on my 750 STOL shortly afterwards. Since I haven't run my engine yet, I haven't much I could add to your issue (sorry) except what I have read in the manuals. I checked my engine installation manual section on prop choices it suggested that the best overall performance for a 750 with the 2700 would probably be found when utilizing a 66" prop. I can't say for sure but it does appear that you are on the right track. </p>
<p></p>
<p>Thanks again</p>
<p>Bill </p> I did not mean your post was…tag:zenith.aero,2019-06-13:2606393:Comment:6800212019-06-13T22:32:47.517ZMark Baenenhttps://zenith.aero/profile/MarkBaenen
<p>I did not mean your post was a sales pitch, just the Viking guy's posts. Oddly enough, I think he removed his posts, which were quite a put down on Corvairs.</p>
<p>Mark</p>
<p>I did not mean your post was a sales pitch, just the Viking guy's posts. Oddly enough, I think he removed his posts, which were quite a put down on Corvairs.</p>
<p>Mark</p> Response from Warp Drive:
*Hi…tag:zenith.aero,2019-06-13:2606393:Comment:6800202019-06-13T21:27:45.456ZMark Baenenhttps://zenith.aero/profile/MarkBaenen
<p>Response from Warp Drive:</p>
<p>*Hi Mark,</p>
<p>You could certainly shorten the propeller blades and keep the pitch setting the same to allow the engine RPM to turn up slightly higher. There typically isn't much of a change as the STOL airplanes usually like the larger diameter props to overcome their drag. By turning the static up to 3,000 or 3,100 RPM, you would also need to watch the RPM in the air so it does not over-rev. A 66" propeller would still give good take-off and climb…</p>
<p>Response from Warp Drive:</p>
<p>*Hi Mark,</p>
<p>You could certainly shorten the propeller blades and keep the pitch setting the same to allow the engine RPM to turn up slightly higher. There typically isn't much of a change as the STOL airplanes usually like the larger diameter props to overcome their drag. By turning the static up to 3,000 or 3,100 RPM, you would also need to watch the RPM in the air so it does not over-rev. A 66" propeller would still give good take-off and climb performance and is generally the size we use for a faster cruise speed in the air.</p>
<p>Let me know if you have any additional questions. If you wanted to try this, you could cut the blades down or we could cut your blades and rebalance them on our scales like a new set.</p>
<p>Thanks,</p>
<p>Daryl Heinemann*</p>