---------------------------------------------------------- Zenith-List Digest Archive --- Total Messages Posted Tue 01/11/05: 16 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 12:53 AM - 801 for relief? (Howard Carter) 2. 05:36 AM - Re: Solid nose wheel axel, 701 (N5SL) 3. 06:43 AM - Re: Solid nose wheel axel, 701 (Larry Martin) 4. 07:32 AM - Re: Solid nose wheel axel, 701 (N5SL) 5. 08:38 AM - Re: Solid nose wheel axel, 701 (Mike Fothergill) 6. 01:15 PM - haven't flown it yet (Grant Corriveau) 7. 02:26 PM - CH701 Project For Sale (John Williamson) 8. 04:33 PM - 601XL rear bottom skin (Cdngoose) 9. 04:50 PM - Fw: TECH SUPPORT - Zenith Aircraft Co. (Matt & Jo) 10. 05:28 PM - Stratus EA-81 w/dual Bing carbs on 601 HDS (DICK WILBERS) 11. 05:45 PM - Re: Stratus EA-81 w/dual Bing carbs on 601 HDS (Lowell Metz) 12. 06:06 PM - Re: Stratus EA-81 w/dual Bing carbs on 601 HDS (Pwalsh4539@aol.com) 13. 06:06 PM - XL Lack of trim with full flap (norman) 14. 06:20 PM - Re: Stratus EA-81 w/dual Bing carbs on 601 HDS (Jon Croke) 15. 06:40 PM - Re: Fw: TECH SUPPORT - Zenith Aircraft Co. (norman) 16. 07:11 PM - Re: Stratus EA-81 w/dual Bing carbs on 601 HDS (Cdngoose) ________________________________ Message 1 _____________________________________ Time: 12:53:51 AM PST US From: Howard Carter Subject: Zenith-List: 801 for relief? --> Zenith-List message posted by: Howard Carter Ben, forget it; the Indonesian Army would steal them and the pilots would be lucky to get back home. Howard Carter do not Archive ________________________________ Message 2 _____________________________________ Time: 05:36:25 AM PST US From: N5SL Subject: Re: Zenith-List: Solid nose wheel axel, 701 --> Zenith-List message posted by: N5SL Matco supplies a 3/4" axle for their tapered bearing option. I'm pretty sure it is a solid axle, but I don't have it in front of me. This is something new they have provided to ZAC for evaluation. They made an extra one and sold it to me. I'm assuming here that the 701 uses the same wheel. I ordered mine 3/8" longer than stock so it would fit my thicker wheel fork (3/8 instead of 3/16"). The part numbers for my order were: WHLAXLE20 for the axle and WHLNW51CC.75R for the nose wheel. Total price including shipping was $173.96 Matco's phone number is 801-486-7574 Here's a photo of what I received from them: http://www.cooknwithgas.com/12_22_04_FrontWheel.JPG and here it is on the fork: http://www.cooknwithgas.com/12_24_04_NoseFork.JPG Good luck, Scott Laughlin N5SL (reserved) http://www.cooknwithgas.com/ JERICKSON03E@aol.com wrote: --> Zenith-List message posted by: JERICKSON03E@aol.com Has anyone tried to fit a solid axle? In place of the 5/16 bolts. --------------------------------- ________________________________ Message 3 _____________________________________ Time: 06:43:58 AM PST US From: "Larry Martin" Subject: Re: Zenith-List: Solid nose wheel axel, 701 --> Zenith-List message posted by: "Larry Martin" Perhaps I missed it, but has there been a problem with the Zac supplied nose wheel axle? I have to admit, I was somewhat underwhelmed when I saw the Zac axle. A piece of 4130 with nuts welded inside the ends. I was thinking about building a solid one anyway. If there has been problem with the Zac one, I'd like to know. Thanks Larry N1345L ----- Original Message ----- From: "N5SL" Subject: Re: Zenith-List: Solid nose wheel axel, 701 > --> Zenith-List message posted by: N5SL > > Matco supplies a 3/4" axle for their tapered bearing option. I'm pretty sure it is a solid axle, but I don't have it in front of me. This is something new they have provided to ZAC for evaluation. They made an extra one and sold it to me. I'm assuming here that the 701 uses the same wheel. > > I ordered mine 3/8" longer than stock so it would fit my thicker wheel fork (3/8 instead of 3/16"). The part numbers for my order were: > > WHLAXLE20 for the axle > and > WHLNW51CC.75R for the nose wheel. > > Total price including shipping was $173.96 > Matco's phone number is 801-486-7574 > > Here's a photo of what I received from them: > > http://www.cooknwithgas.com/12_22_04_FrontWheel.JPG > > and here it is on the fork: > > http://www.cooknwithgas.com/12_24_04_NoseFork.JPG > > Good luck, > > Scott Laughlin > N5SL (reserved) > http://www.cooknwithgas.com/ > > > JERICKSON03E@aol.com wrote: > --> Zenith-List message posted by: JERICKSON03E@aol.com > > Has anyone tried to fit a solid axle? In place of the 5/16 bolts. > > > --------------------------------- > > ________________________________ Message 4 _____________________________________ Time: 07:32:17 AM PST US From: N5SL Subject: Re: Zenith-List: Solid nose wheel axel, 701 --> Zenith-List message posted by: N5SL Larry: I'm not aware of any problem with the axle. I'm sure ZAC's design is fine. I know there were some builders having their wheels machined to accept tapered bearings - I just wanted to point out that you can order them that way now from Matco. The explanation I got from Matco was that the stock tapered bearings they found have a larger center hole (3/4"). Scott Laughlin N5SL (reserved) www.cooknwithgas.com Larry Martin wrote: --> Zenith-List message posted by: "Larry Martin" Perhaps I missed it, but has there been a problem with the Zac supplied nose wheel axle? --------------------------------- ________________________________ Message 5 _____________________________________ Time: 08:38:19 AM PST US From: Mike Fothergill Subject: Re: Zenith-List: Solid nose wheel axel, 701 --> Zenith-List message posted by: Mike Fothergill Hi; This method works fine on the CH-2000 certified airplane. I can testify that you wll severely damage the gear before breaking the axle. Mike UHS Spinners Do not archive Larry Martin wrote: > --> Zenith-List message posted by: "Larry Martin" > > Perhaps I missed it, but has there been a problem with the Zac supplied nose > wheel axle? I have to admit, I was somewhat underwhelmed when I saw the Zac > axle. A piece of 4130 with nuts welded inside the ends. I was thinking > about building a solid one anyway. If there has been problem with the Zac > one, I'd like to know. Thanks Larry N1345L > > > ----- Original Message ----- > From: "N5SL" > To: > Subject: Re: Zenith-List: Solid nose wheel axel, 701 > > > >>--> Zenith-List message posted by: N5SL >> >>Matco supplies a 3/4" axle for their tapered bearing option. I'm pretty > > sure it is a solid axle, but I don't have it in front of me. This is > something new they have provided to ZAC for evaluation. They made an extra > one and sold it to me. I'm assuming here that the 701 uses the same wheel. > >>I ordered mine 3/8" longer than stock so it would fit my thicker wheel > > fork (3/8 instead of 3/16"). The part numbers for my order were: > >>WHLAXLE20 for the axle >>and >>WHLNW51CC.75R for the nose wheel. >> >>Total price including shipping was $173.96 >>Matco's phone number is 801-486-7574 >> >>Here's a photo of what I received from them: >> >>http://www.cooknwithgas.com/12_22_04_FrontWheel.JPG >> >>and here it is on the fork: >> >>http://www.cooknwithgas.com/12_24_04_NoseFork.JPG >> >>Good luck, >> >>Scott Laughlin >>N5SL (reserved) >>http://www.cooknwithgas.com/ >> >> >>JERICKSON03E@aol.com wrote: >>--> Zenith-List message posted by: JERICKSON03E@aol.com >> >>Has anyone tried to fit a solid axle? In place of the 5/16 bolts. >> >> >>--------------------------------- >> >> > > > > > > > > ________________________________ Message 6 _____________________________________ Time: 01:15:00 PM PST US Subject: Zenith-List: haven't flown it yet From: Grant Corriveau --> Zenith-List message posted by: Grant Corriveau > And, before you ask-- No, I haven't flown it yet. It was windy today > and I was too psyched out from the last few frantic weeks of "final" > work. I'll post performance notes and impressions soon. Good call! Take time for a deep breath so you can relax and enjoy this wonderful adventure of flying your airplane for the first time! Have a great one! do not archive -- Grant Corriveau C-GHTF / HDS / CAM100 ________________________________ Message 7 _____________________________________ Time: 02:26:59 PM PST US From: "John Williamson" Subject: Zenith-List: CH701 Project For Sale --> Zenith-List message posted by: "John Williamson" I have decided to sell my almost done CH701 project. Please go to this link for more details and pricing: http://home.comcast.net/~stol_airplane/STOL_CH701.htm I will continue to work on the project and the construction log is still available at this link: http://home.comcast.net/~stol_airplane John Williamson Arlington, TX 817-557-8508 Kolb Kolbra, Rotax 912UL, 708 hours http://home.comcast.net/~kolbrapilot Zenith CH701 Project http://home.comcast.net/~stol_airplane http://www.zenithair.com/bldrlist/profiles/stol_airplane do not archive ________________________________ Message 8 _____________________________________ Time: 04:33:53 PM PST US From: "Cdngoose" <601xl@sympatico.ca> Subject: Zenith-List: 601XL rear bottom skin --> Zenith-List message posted by: "Cdngoose" <601xl@sympatico.ca> 601XL builders on the rear bottom skin what is the distance form the edge of the skin (closest to fuselage) to the first line of rivet holes for RR#1 The top skin is 102mm but there does not seem to be any measurement for bottom skin. Mark Townsend Alma, Ontario Zodiac 601XL EJ 2.2L Osprey 2 serial # 751 www.ch601.org www.Osprey2.com ________________________________ Message 9 _____________________________________ Time: 04:50:46 PM PST US From: "Matt & Jo" Subject: Zenith-List: Fw: TECH SUPPORT - Zenith Aircraft Co. --> Zenith-List message posted by: "Matt & Jo" Hello all. I sent off some questions to ZAC and got this response on the control harmony and the flight characteristics. Thought I would share. Cheers Matt Archer www.Zodiacxl.com ----- Original Message ----- From: "Zenith Aircraft Company" Subject: Re: TECH SUPPORT - Zenith Aircraft Co. > > Matt Archer >> Message: Request Additional Info, I got a chance to fly an XL the >> other day. I figured I ought to fly it first before I make the big >> plunge. What a wonderful aircraft. So I placed an order for the rest >> of the kit. I was very impressed. >> I did have a couple of questions though. The control harmony is a >> little off. The elevator is very sensitive and the ailerons are >> stiff. I got used to it fairly quickly. I did a series of steep bank >> turns. After a couple of roll ins and roll outs it felt better. The >> landings went fine. However, I have to think that reducing the >> elevator authority might be a good idea. > > You are right, elevator authority increases as the airspeed increases. > In cruise, pitch control is generally done with making small adjustment > with the electric trim tab. > >> Have you observed this? Do you have any recommendations on how to >> improve this? Do the hinged ailerons decrease the roll forces? > > Yes, using piano hinges instead of the flex hinge will decrease the > aileron > forces; with the flex hinge the forces increase progressively with the > bank > angle. On our demo flights, pilots have responded positively to the solid > feel of the ailerons. > Without complicating the control system, aileron sensitivity can be > reduced by increase the stick movement by making the length of the stick > longer. > >> One more impression, I thought the rudder was kind of stiff. It would >> almost stay where you placed it and did not really seem to center when >> you took your feet off the rudder. Again it wasn't that big of a deal >> but noticeable. >> Have you observed this and do you have any fixes? > > This is due to the direct linkage of the rudder pedals to the steerable > nose > wheel. For the most part, it is necessary to coordinate turns with > rudder - > turns are initiated with the ailerons, and for the most part the slip > indicator > (bubble) will just begin to move. > > The nose gear centering stops can be filed down to make the nose rudder > pedals easier to move. > >> Bottom line; I bought the rest of the kit. These small quirks are not >> big ones. But I have to believe that some are fixable. > > > Nick Heintz > Zenith Aircraft Company > email: support@zenithair.com > http://www.zenithair.com > > Technical Support Disclaimer: While we strive to ensure that the > advice/information provided through our support is correct, Zenith > Aircraft Company does not accept any responsibility for errors or > omissions. Any advice or information that Zenith Aircraft Company > gives you via any form of communication is not a guarantee that it > will correct your problem. It is only offered as assistance to you. > Zenith Aircraft Company will not be held responsible for any loss or > damage as a result of our advice or information supplied. > > ________________________________ Message 10 ____________________________________ Time: 05:28:56 PM PST US From: "DICK WILBERS" Subject: Zenith-List: Stratus EA-81 w/dual Bing carbs on 601 HDS 1.96 FROM_NO_LOWER From address has no lower-case characters --> Zenith-List message posted by: "DICK WILBERS" Dear List: I find that the throttle springs on the Bing carbs are very strong and pull the throttle open. I have installed a vernier throttle control, but I find the spring pressure requires a substantial "pull" on the throttle to throttle down. Has anyone replaced the springs with lighter springs or even removed the springs from the carbs? I have loosened the split nylon tension block used with the old throttles and merely use it as a guide, but the pull required is substantial. Your comments will be greatly appreciated. Best regards....................................................Dick Wilbers Florida 97% complete ________________________________ Message 11 ____________________________________ Time: 05:45:11 PM PST US From: "Lowell Metz" Subject: Re: Zenith-List: Stratus EA-81 w/dual Bing carbs on 601 HDS --> Zenith-List message posted by: "Lowell Metz" Jon Croke , This one is all yours........... you are the GURU and walked away to tell about it. Lowell Metz 701 / 912S 65 hrs. Venice FL. Do not archive ----- Original Message ----- From: "DICK WILBERS" Subject: Zenith-List: Stratus EA-81 w/dual Bing carbs on 601 HDS > --> Zenith-List message posted by: "DICK WILBERS" > > Dear List: I find that the throttle springs on the Bing carbs are very strong and pull the throttle open. I have installed a vernier throttle control, but I find the spring pressure requires a substantial "pull" on the throttle to throttle down. Has anyone replaced the springs with lighter springs or even removed the springs from the carbs? I have loosened the split nylon tension block used with the old throttles and merely use it as a guide, but the pull required is substantial. > Your comments will be greatly appreciated. > Best regards....................................................Dick Wilbers Florida 97% complete > > ________________________________ Message 12 ____________________________________ Time: 06:06:34 PM PST US From: Pwalsh4539@aol.com Subject: Re: Zenith-List: Stratus EA-81 w/dual Bing carbs on 601 HDS --> Zenith-List message posted by: Pwalsh4539@aol.com check the archives. I recall someone a while back having a serious problem after tinkering with the springs on the carbs. I do not recall the details, however. Patrick Walsh ________________________________ Message 13 ____________________________________ Time: 06:06:34 PM PST US From: "norman" Subject: Zenith-List: XL Lack of trim with full flap --> Zenith-List message posted by: "norman" Hello everyone, I thought I would follow up the subject of the lack of nose up trim when using full flap on the CZAW built kit XL. There are now four XL's in the UK that have completed their test flying and are now delayed due to this problem. The PFA who issue our permits to fly have said the aircraft is unacceptable as it is. CZAW (Czech Aircraft Works) have provided a solution with a mod that fits between the flap operating torque tube via a spring and cable and connects to the control column 25 mm below the upper elevator control cable attachment shackle. If anyone is interested please e-mail me and I will send you the factory drawings. normskiroo@ukonline.co.uk The mod should take no more than a couple of hours to fit and is quite straight forward. At present we are waiting for the PFA to approve the mod and then CZAW will be manufacturing and then shipping. For those List members who have had this problem and fitted larger elevator trim tabs the PFA have pointed out to us here in the UK that they where not happy with this solution. With full flap and the aircraft trimmed on the approach, if a sudden go around had to be executed and the flap where retracted it may cause the aircraft to enter an uncontrolled climb. I will keep the List up to date with our progress. Happy New Year to you all. Norman ________________________________ Message 14 ____________________________________ Time: 06:20:55 PM PST US From: "Jon Croke" Subject: Re: Zenith-List: Stratus EA-81 w/dual Bing carbs on 601 HDS --> Zenith-List message posted by: "Jon Croke" Yes, thanks Lowell, I can handle that one! For the answer to results from fooling with carb springs, goto http://www.matronics.com/search and choose ZENITH and then enter "stiff springs" (without the quotes) in the search string and you will read a story of woe and intrigue! Then, let me know what you think! ;) Jon N701US, still in rebuild mode, but this time with the original carb springs! www.CH701.com ----- Original Message ----- From: "Lowell Metz" Subject: Re: Zenith-List: Stratus EA-81 w/dual Bing carbs on 601 HDS > --> Zenith-List message posted by: "Lowell Metz" > > > Jon Croke , This one is all yours........... you are the GURU and walked > away to tell about it. > Lowell Metz > 701 / 912S 65 hrs. > Venice FL. > Do not archive > ----- Original Message ----- > From: "DICK WILBERS" > To: > Subject: Zenith-List: Stratus EA-81 w/dual Bing carbs on 601 HDS > > >> --> Zenith-List message posted by: "DICK WILBERS" > >> >> Dear List: I find that the throttle springs on the Bing carbs are very > strong and pull the throttle open. I have installed a vernier throttle > control, but I find the spring pressure requires a substantial "pull" on > the > throttle to throttle down. Has anyone replaced the springs with lighter > springs or even removed the springs from the carbs? I have loosened the > split nylon tension block used with the old throttles and merely use it as > a > guide, but the pull required is substantial. >> Your comments will be greatly appreciated. >> Best regards....................................................Dick > Wilbers Florida 97% complete >> ________________________________ Message 15 ____________________________________ Time: 06:40:43 PM PST US From: "norman" Subject: Re: Zenith-List: Fw: TECH SUPPORT - Zenith Aircraft Co. --> Zenith-List message posted by: "norman" Hello Matt, We here in the UK have had problems with friction in the rudder control circuit, mine was very stiff originally and the problem was traced to the bottom plastic bearing being to tight. ( I am assuming here that CZAW XL kits have the same design bearing) If you raise the nose of the aircraft so the nosewheel is clear of the ground then have a second person turn the nosewheel to it's fullest extent both port and starboard it should spring back to centre when let go. If this is not the case, slightly slacken the bolts that hold the plastic bearing together and carry out the test again, if the nosewheel now springs back to centre then try lubricating the lower bearing, re-tighten and re-test, if that fails you will have to remove the bearing and have a little material machined out. Hope this helps, Cheers, Norman ----- Original Message ----- From: "Matt & Jo" Subject: Zenith-List: Fw: TECH SUPPORT - Zenith Aircraft Co. > --> Zenith-List message posted by: "Matt & Jo" > > Hello all. I sent off some questions to ZAC and got this response on the > control harmony and the flight characteristics. Thought I would share. > > Cheers > > Matt Archer > www.Zodiacxl.com > > > ----- Original Message ----- > From: "Zenith Aircraft Company" > To: > Subject: Re: TECH SUPPORT - Zenith Aircraft Co. > > > > > > Matt Archer > >> Message: Request Additional Info, I got a chance to fly an XL the > >> other day. I figured I ought to fly it first before I make the big > >> plunge. What a wonderful aircraft. So I placed an order for the rest > >> of the kit. I was very impressed. > >> I did have a couple of questions though. The control harmony is a > >> little off. The elevator is very sensitive and the ailerons are > >> stiff. I got used to it fairly quickly. I did a series of steep bank > >> turns. After a couple of roll ins and roll outs it felt better. The > >> landings went fine. However, I have to think that reducing the > >> elevator authority might be a good idea. > > > > You are right, elevator authority increases as the airspeed increases. > > In cruise, pitch control is generally done with making small adjustment > > with the electric trim tab. > > > >> Have you observed this? Do you have any recommendations on how to > >> improve this? Do the hinged ailerons decrease the roll forces? > > > > Yes, using piano hinges instead of the flex hinge will decrease the > > aileron > > forces; with the flex hinge the forces increase progressively with the > > bank > > angle. On our demo flights, pilots have responded positively to the solid > > feel of the ailerons. > > Without complicating the control system, aileron sensitivity can be > > reduced by increase the stick movement by making the length of the stick > > longer. > > > >> One more impression, I thought the rudder was kind of stiff. It would > >> almost stay where you placed it and did not really seem to center when > >> you took your feet off the rudder. Again it wasn't that big of a deal > >> but noticeable. > >> Have you observed this and do you have any fixes? > > > > This is due to the direct linkage of the rudder pedals to the steerable > > nose > > wheel. For the most part, it is necessary to coordinate turns with > > rudder - > > turns are initiated with the ailerons, and for the most part the slip > > indicator > > (bubble) will just begin to move. > > > > The nose gear centering stops can be filed down to make the nose rudder > > pedals easier to move. > > > >> Bottom line; I bought the rest of the kit. These small quirks are not > >> big ones. But I have to believe that some are fixable. > > > > > > Nick Heintz > > Zenith Aircraft Company > > email: support@zenithair.com > > http://www.zenithair.com > > > > Technical Support Disclaimer: While we strive to ensure that the > > advice/information provided through our support is correct, Zenith > > Aircraft Company does not accept any responsibility for errors or > > omissions. Any advice or information that Zenith Aircraft Company > > gives you via any form of communication is not a guarantee that it > > will correct your problem. It is only offered as assistance to you. > > Zenith Aircraft Company will not be held responsible for any loss or > > damage as a result of our advice or information supplied. > > > > > > ________________________________ Message 16 ____________________________________ Time: 07:11:07 PM PST US From: "Cdngoose" <601xl@sympatico.ca> Subject: RE: Zenith-List: Stratus EA-81 w/dual Bing carbs on 601 HDS --> Zenith-List message posted by: "Cdngoose" <601xl@sympatico.ca> For the whole story on this modification with result pictures click here before you change those springs! http://www.ch601.org/stories/croke_crash.htm Mark Townsend Alma, Ontario Zodiac 601XL EJ 2.2L Osprey 2 serial # 751 www.ch601.org www.Osprey2.com -----Original Message----- From: owner-zenith-list-server@matronics.com [mailto:owner-zenith-list-server@matronics.com] On Behalf Of Jon Croke Subject: Re: Zenith-List: Stratus EA-81 w/dual Bing carbs on 601 HDS --> Zenith-List message posted by: "Jon Croke" Yes, thanks Lowell, I can handle that one! For the answer to results from fooling with carb springs, goto http://www.matronics.com/search and choose ZENITH and then enter "stiff springs" (without the quotes) in the search string and you will read a story of woe and intrigue! Then, let me know what you think! ;) Jon N701US, still in rebuild mode, but this time with the original carb springs! www.CH701.com ----- Original Message ----- From: "Lowell Metz" Subject: Re: Zenith-List: Stratus EA-81 w/dual Bing carbs on 601 HDS > --> Zenith-List message posted by: "Lowell Metz" > > > Jon Croke , This one is all yours........... you are the GURU and walked > away to tell about it. > Lowell Metz > 701 / 912S 65 hrs. > Venice FL. > Do not archive > ----- Original Message ----- > From: "DICK WILBERS" > To: > Subject: Zenith-List: Stratus EA-81 w/dual Bing carbs on 601 HDS > > >> --> Zenith-List message posted by: "DICK WILBERS" > >> >> Dear List: I find that the throttle springs on the Bing carbs are very > strong and pull the throttle open. I have installed a vernier throttle > control, but I find the spring pressure requires a substantial "pull" on > the > throttle to throttle down. Has anyone replaced the springs with lighter > springs or even removed the springs from the carbs? I have loosened the > split nylon tension block used with the old throttles and merely use it as > a > guide, but the pull required is substantial. >> Your comments will be greatly appreciated. >> Best regards....................................................Dick > Wilbers Florida 97% complete >>