---------------------------------------------------------- Pulsar-List Digest Archive --- Total Messages Posted Fri 08/24/12: 12 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 06:46 AM - Re: Re: Fiberglass/ foam undercarriage age. (barrynorman@comcast.net) 2. 07:07 AM - Re: Re: Fiberglass/ foam undercarriage age. (Ray Wilhelm) 3. 07:12 AM - Re: Re: Fiberglass/ foam undercarriage age. (Barry J Edwards) 4. 07:18 AM - Re: Re: Fiberglass/ foam undercarriage age. (Ray Wilhelm) 5. 07:23 AM - Re: Re: Fiberglass/ foam undercarriage age. (Ray Wilhelm) 6. 07:30 AM - Upper Rudder Hinge Reinforcement. (Sonja Englert) 7. 07:37 AM - Re: Re: Fiberglass/ foam undercarriage age. (Barry J Edwards) 8. 07:48 AM - Re: Upper Rudder Hinge Reinforcement. (Barry J Edwards) 9. 12:19 PM - Re: Upper Rudder Hinge Reinforcement. (Brian Anderson) 10. 12:59 PM - Re: Re: Fiberglass/ foam undercarriage age. (Cd) 11. 01:28 PM - Re: Re: Fiberglass/ foam undercarriage age. (barrynorman@comcast.net) 12. 08:49 PM - Re: Re: Fiberglass/ foam undercarriage age. (Ray Wilhelm) ________________________________ Message 1 _____________________________________ Time: 06:46:05 AM PST US From: barrynorman@comcast.net Subject: Re: Pulsar-List: Re: Fiberglass/ foam undercarriage age. I have a Pulsar III with the fiberglass gear and they are wrapped with carb on fiber all the way down to about 2 inches form the end. The last two inch es I wrapped with several revolutions of 2 inch glass tape to try to preven t splitting.=C2-To this point I have never had a problem and I have my ow n custom build wheel pants and gear leg fairings installed with no vents. =C2- Are the legs collapsing outward when it happens? =C2- Barry ----- Original Message ----- > Sent: Friday, August 24, 2012 2:34:34 AM Subject: Re: Pulsar-List: Re: Fiberglass/ foam undercarriage age. I had the wheel pants on. Carlos Pulsar III On Aug 23, 2012, at 1:14 PM, Larry Wheat < lwheat2083@gmail.com > wrote: Carlos, did you have your wheel pants on or off. Cheers, Larry N852LW =C2- On Thu, Aug 23, 2012 at 11:33 AM, Pulsar747N < pulsar747n@yahoo.com > wrote :
I also had the same problem with the glass gear including the carbon wrap m od. =C2-I was doing high speed test runs and the=C2- excessive heat gen erated by the brakes collapsed the left leg about 2 inches up from the uppe r brake holes. I have not done anything yet but I am soon faced with replacing the gear wi th the Grove. Carlos, Pulsar III / Aeromax=C2- =C2- From: Ray Wilhelm < rwilhelm@dc.rr.com > Sent: Thursday, August 23, 2012 7:42 AM Subject: RE: Pulsar-List: Re: Fiberglass/ foam undercarriage age. I don't have the details. It was 2 or 3 laps around the lower legs up to about 18 inches from where the axel is fitted, I think. I don't have the glass gear anymore. I was the first to install a Grove gear many years ago. The glass gear collapsed from excessive heat soak back from doing fast landing tests. Ray=C2- Pulsar III/3300 -----Original Message----- From: owner-pulsar-list-server@matronics.com [mailto: owner-pulsar-list-server@matronics.com ] On Behalf Of mjb777 Sent: Thursday, August 23, 2012 1:00 AM Subject: Pulsar-List: Re: Fiberglass/ foam undercarriage age. rwilhelm(at) dc.rr.com wrote: > There was also a mod to the Glass gear by Skystar for the Pulsar III. > It added carbon fiber to the gear legs to stiffen the gear legs. They > have a tendency to shimmy when landing faster than normal. > > Ray=C2- =C2- =C2- Pulsar III/3300 > > > > > -- Ray do you have any details of this carbon fibre modification? Was it to th e whole gear or specific areas? Does your Pulsar 3 have a wood or composite spar? Matt. -------- Pulsar 1 TD Kit. Captain B777. Licenced Aircraft Maintenance Engineer. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=381581#3ronics.com/Navigator? Pulsar-List " target="_blank"> http://www.matronics.co ====== ================== arget="_blank"> http://www.matronics.com/Navigator?Pulsar-List ttp://foru ms.matronics.com _blank"> http://www.matronics.com/contribution -- Larry Wheat href="http://www.matronics.com/Navigator?Pulsar-List">http://www.matronic s.com/Navigator?Pulsar-List href="http://forums.matronics.com">http://for ums.matronics.com href="http://www.matronics.com/contribution">http://www .matronics.com/contribution
== ________________________________ Message 2 _____________________________________ Time: 07:07:02 AM PST US From: "Ray Wilhelm" Subject: RE: Pulsar-List: Re: Fiberglass/ foam undercarriage age. Mine collapsed inboard just above the axel. At the time , I had the supplied pants. Ray Pulsar III/3300 From: owner-pulsar-list-server@matronics.com [mailto:owner-pulsar-list-server@matronics.com] On Behalf Of barrynorman@comcast.net Sent: Friday, August 24, 2012 6:40 AM Subject: Re: Pulsar-List: Re: Fiberglass/ foam undercarriage age. I have a Pulsar III with the fiberglass gear and they are wrapped with carbon fiber all the way down to about 2 inches form the end. The last two inches I wrapped with several revolutions of 2 inch glass tape to try to prevent splitting. To this point I have never had a problem and I have my own custom build wheel pants and gear leg fairings installed with no vents. Are the legs collapsing outward when it happens? Barry _____ > Sent: Friday, August 24, 2012 2:34:34 AM Subject: Re: Pulsar-List: Re: Fiberglass/ foam undercarriage age. I had the wheel pants on. Carlos Pulsar III On Aug 23, 2012, at 1:14 PM, Larry Wheat wrote: Carlos, did you have your wheel pants on or off. Cheers, Larry N852LW On Thu, Aug 23, 2012 at 11:33 AM, Pulsar747N wrote: I also had the same problem with the glass gear including the carbon wrap mod. I was doing high speed test runs and the excessive heat generated by the brakes collapsed the left leg about 2 inches up from the upper brake holes. I have not done anything yet but I am soon faced with replacing the gear with the Grove. Carlos, Pulsar III / Aeromax _____ From: Ray Wilhelm Sent: Thursday, August 23, 2012 7:42 AM Subject: RE: Pulsar-List: Re: Fiberglass/ foam undercarriage age. I don't have the details. It was 2 or 3 laps around the lower legs up to about 18 inches from where the axel is fitted, I think. I don't have the glass gear anymore. I was the first to install a Grove gear many years ago. The glass gear collapsed from excessive heat soak back from doing fast landing tests. Ray Pulsar III/3300 -----Original Message----- From: owner-pulsar-list-server@matronics.com [mailto:owner-pulsar-list-server@matronics.com] On Behalf Of mjb777 Sent: Thursday, August 23, 2012 1:00 AM Subject: Pulsar-List: Re: Fiberglass/ foam undercarriage age. rwilhelm(at)dc.rr.com wrote: > There was also a mod to the Glass gear by Skystar for the Pulsar III. > It added carbon fiber to the gear legs to stiffen the gear legs. They > have a tendency to shimmy when landing faster than normal. > > Ray Pulsar III/3300 > > > > > -- Ray do you have any details of this carbon fibre modification? Was it to the whole gear or specific areas? Does your Pulsar 3 have a wood or composite spar? Matt. -------- Pulsar 1 TD Kit. Captain B777. Licenced Aircraft Maintenance Engineer. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=381581#3ronics.com/Navigato r?Pulsar-List" target="_blank">http://www.matronics.co ======================= arget="_blank">http://www.matronics.com/Navigator?Pulsar-List ttp://forums.matronics.com _blank">http://www.matronics.com/contribution -- Larry Wheat href="http://www.matronics.com/Navigator?Pulsar-List">http://www.matron ics.com/Navigator?Pulsar-List href="http://forums.matronics.com">http://forums.matronics.com href="http://www.matronics.com/contribution">http://www.matronics.com/c ontribution = --> http://www.matronics.com/Navigator?Pulsar-List ; http://forums.matronics.com blank>http://www.matronics.com/contribution ________________________________ Message 3 _____________________________________ Time: 07:12:46 AM PST US From: "Barry J Edwards" Subject: Re: Pulsar-List: Re: Fiberglass/ foam undercarriage age. The best solution to the heating up of the lower U/C leg is not to brake so hard! Landing at 100mph and braking hard seems utterly pointless to me when the Pulsar will land safely at 65mph and slow down relatively easily with light braking. My XP tail-dragger had the glass leg without any problems at all, flying from a 1500 foot grass strip and rarely using more than half of it. My 4.5=9D Azusa internal drum brakes are too weedy to cause much heat anyway, let alone rapid slowing down. Energy (speed) management in the approach and flare should be the key to stopping quickly, not hard braking =93 you learn that with a tail-dragger or you stuff it on it's nose! My gear did eventually fail, but only because a sheep wrapped its neck around it during one fateful landing. The sheep died saving me having to kill it myself in revenge. The gear leg finally cracked some months later at the top mounting point. I now have the Pulsar =98lite=99 Grove one piece gear installed which was not much heavier than the original solid glass gear and is not noticeably different to land on or taxi with. Barry G-XPXP 912 Tail-dragger UK From: mjb777 Sent: Friday, August 24, 2012 7:07 AM Subject: Pulsar-List: Re: Fiberglass/ foam undercarriage age. Interesting to read about the fiberglass gear structural issues due to general wear and tear and also the possible thermal problem from the brakes also. I Think I may have a $40 solution. I'd like to recommend an amazing product I have used for years, which is BVM, (Bob Violett Models), "Heat Shield Paint". I know what you may think when the word "models" comes into it, (not the nice ones that prance around either), but honestly this stuff is amazing! I used it a lot on my turbine powered model jets and it really was incredible how this ceramic paint reflected heat and kept structure cool even when the structure or skin was mm from the engine. It sticks like the proverbial and is feather light, and cheap also!! There are probably tons of other places this could be used in composite or otherwise homebuilts but I'd say at a glance that this would be very worthwhile painted on the face of the Fiberglass gear leg that it subjected to radiation heat from the brakes. Some reinforced ventilation slots or holes in the top of the pants would generate convection through the pant also. Check out the BVM website. Matt. -------- Pulsar 1 TD Kit. Captain B777. Licenced Aircraft Maintenance Engineer. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=381665#381665 ________________________________ Message 4 _____________________________________ Time: 07:18:17 AM PST US From: "Ray Wilhelm" Subject: RE: Pulsar-List: Re: Fiberglass/ foam undercarriage age. I just like to know the limits in case they are needed. Ray From: owner-pulsar-list-server@matronics.com [mailto:owner-pulsar-list-server@matronics.com] On Behalf Of Barry J Edwards Sent: Friday, August 24, 2012 7:12 AM Subject: Re: Pulsar-List: Re: Fiberglass/ foam undercarriage age. The best solution to the heating up of the lower U/C leg is not to brake so hard! Landing at 100mph and braking hard seems utterly pointless to me when the Pulsar will land safely at 65mph and slow down relatively easily with light braking. My XP tail-dragger had the glass leg without any problems at all, flying from a 1500 foot grass strip and rarely using more than half of it. My 4.5=9D Azusa internal drum brakes are too weedy to cause much heat anyway, let alone rapid slowing down. Energy (speed) management in the approach and flare should be the key to stopping quickly, not hard braking =93 you learn that with a tail-dragger or you stuff it on it's nose! My gear did eventually fail, but only because a sheep wrapped its neck around it during one fateful landing. The sheep died saving me having to kill it myself in revenge. The gear leg finally cracked some months later at the top mounting point. I now have the Pulsar =98lite=99 Grove one piece gear installed which was not much heavier than the original solid glass gear and is not noticeably different to land on or taxi with. Barry G-XPXP 912 Tail-dragger UK From: mjb777 Sent: Friday, August 24, 2012 7:07 AM Subject: Pulsar-List: Re: Fiberglass/ foam undercarriage age. Interesting to read about the fiberglass gear structural issues due to general wear and tear and also the possible thermal problem from the brakes also. I Think I may have a $40 solution. I'd like to recommend an amazing product I have used for years, which is BVM, (Bob Violett Models), "Heat Shield Paint". I know what you may think when the word "models" comes into it, (not the nice ones that prance around either), but honestly this stuff is amazing! I used it a lot on my turbine powered model jets and it really was incredible how this ceramic paint reflected heat and kept structure cool even when the structure or skin was mm from the engine. It sticks like the proverbial and is feather light, and cheap also!! There are probably tons of other places this could be used in composite or otherwise homebuilts but I'd say at a glance that this would be very worthwhile painted on the face of the Fiberglass gear leg that it subjected to radiation heat from the brakes. Some reinforced ventilation slots or holes in the top of the pants would generate convection through the pant also. Check out the BVM website. Matt. -------- Pulsar 1 TD Kit. Captain B777. Licenced Aircraft Maintenance Engineer. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=381665#381665 Subject: RE: Pulsar-List: Re: Fiberglass/ foam undercarriage age. I would like to point out that when arriving at a field that has a DA of 10,000 ft the ground speed can easily approach 100. We see this at times in the summer at Big Bear etc. Ray From: owner-pulsar-list-server@matronics.com [mailto:owner-pulsar-list-server@matronics.com] On Behalf Of Barry J Edwards Sent: Friday, August 24, 2012 7:12 AM Subject: Re: Pulsar-List: Re: Fiberglass/ foam undercarriage age. The best solution to the heating up of the lower U/C leg is not to brake so hard! Landing at 100mph and braking hard seems utterly pointless to me when the Pulsar will land safely at 65mph and slow down relatively easily with light braking. My XP tail-dragger had the glass leg without any problems at all, flying from a 1500 foot grass strip and rarely using more than half of it. My 4.5=9D Azusa internal drum brakes are too weedy to cause much heat anyway, let alone rapid slowing down. Energy (speed) management in the approach and flare should be the key to stopping quickly, not hard braking =93 you learn that with a tail-dragger or you stuff it on it's nose! My gear did eventually fail, but only because a sheep wrapped its neck around it during one fateful landing. The sheep died saving me having to kill it myself in revenge. The gear leg finally cracked some months later at the top mounting point. I now have the Pulsar =98lite=99 Grove one piece gear installed which was not much heavier than the original solid glass gear and is not noticeably different to land on or taxi with. Barry G-XPXP 912 Tail-dragger UK From: mjb777 Sent: Friday, August 24, 2012 7:07 AM Subject: Pulsar-List: Re: Fiberglass/ foam undercarriage age. Interesting to read about the fiberglass gear structural issues due to general wear and tear and also the possible thermal problem from the brakes also. I Think I may have a $40 solution. I'd like to recommend an amazing product I have used for years, which is BVM, (Bob Violett Models), "Heat Shield Paint". I know what you may think when the word "models" comes into it, (not the nice ones that prance around either), but honestly this stuff is amazing! I used it a lot on my turbine powered model jets and it really was incredible how this ceramic paint reflected heat and kept structure cool even when the structure or skin was mm from the engine. It sticks like the proverbial and is feather light, and cheap also!! There are probably tons of other places this could be used in composite or otherwise homebuilts but I'd say at a glance that this would be very worthwhile painted on the face of the Fiberglass gear leg that it subjected to radiation heat from the brakes. Some reinforced ventilation slots or holes in the top of the pants would generate convection through the pant also. Check out the BVM website. Matt. -------- Pulsar 1 TD Kit. Captain B777. Licenced Aircraft Maintenance Engineer. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=381665#381665 Over the years, I have watched my upper rudder hinge develop more and more play and now finally decided to fix it. I am rather upset at the poor design of it and how it is almost impossible to install. I don=92t know if they are all the same, but mine consists of two sheet metal tabs, about 0.04=94 thick, the lower one with a nutplate. This material is too thin to be of much use as a bearing. The hole in the upper side of the rudder is the only access and any hardware dropped in there is impossible to get back out without major trouble. When I tried to insert the original bolt (I=92m not sure how one is supposed to do that since the hole is too small to even get a socket in), it fell into the rudder. To improve the situation, I redesigned that hinge for proper function as a bearing and easy installation. I reinforced the stabilizer side by removing the original nut plate, bonding a 1/8=94 thick plate of glass laminate underneath the metal tab and holding it in place by 5 plies glass, extending 3=94 down on the stabilizer. I bonded a new nutplate (1/4=94) underneath this. On the rudder, I made a bushing with a threaded portion on the lower side and a =BC=94 ID for the bolt. It is long enough (upward) that the bolt can be inserted without risk of dropping it into the rudder. The hole in the rudder tab is enlarged to fit the bushing, which is held in place by the nut and also bonded in. The upper end has a slot to be able to turn it with a screwdriver during installation. The bolt (=BC=94, hex) is much longer now. I retained the slot in the head to be able to use a screwdriver instead of a socket for installation. The bolt is held by safety wire on the lower end from backing out. This design has plenty of bearing surface and should not develop play. It is very easy to install it. Anyone working on building these parts should close off the rudder structure below those holes to prevent hardware from falling in. I have shown what I did in the attached sketch (I hope it stays attached). Sonja ________________________________ Message 7 _____________________________________ Time: 07:37:15 AM PST US From: "Barry J Edwards" Subject: Re: Pulsar-List: Re: Fiberglass/ foam undercarriage age. Fair point, we don=99t have anything at 10,000ft in the UK except more cloud! Barry From: Ray Wilhelm Sent: Friday, August 24, 2012 3:23 PM Subject: RE: Pulsar-List: Re: Fiberglass/ foam undercarriage age. I would like to point out that when arriving at a field that has a DA of 10,000 ft the ground speed can easily approach 100. We see this at times in the summer at Big Bear etc. Ray From: owner-pulsar-list-server@matronics.com [mailto:owner-pulsar-list-server@matronics.com] On Behalf Of Barry J Edwards Sent: Friday, August 24, 2012 7:12 AM Subject: Re: Pulsar-List: Re: Fiberglass/ foam undercarriage age. The best solution to the heating up of the lower U/C leg is not to brake so hard! Landing at 100mph and braking hard seems utterly pointless to me when the Pulsar will land safely at 65mph and slow down relatively easily with light braking. My XP tail-dragger had the glass leg without any problems at all, flying from a 1500 foot grass strip and rarely using more than half of it. My 4.5=9D Azusa internal drum brakes are too weedy to cause much heat anyway, let alone rapid slowing down. Energy (speed) management in the approach and flare should be the key to stopping quickly, not hard braking =93 you learn that with a tail-dragger or you stuff it on it's nose! My gear did eventually fail, but only because a sheep wrapped its neck around it during one fateful landing. The sheep died saving me having to kill it myself in revenge. The gear leg finally cracked some months later at the top mounting point. I now have the Pulsar =98lite=99 Grove one piece gear installed which was not much heavier than the original solid glass gear and is not noticeably different to land on or taxi with. Barry G-XPXP 912 Tail-dragger UK From: mjb777 Sent: Friday, August 24, 2012 7:07 AM Subject: Pulsar-List: Re: Fiberglass/ foam undercarriage age. Interesting to read about the fiberglass gear structural issues due to general wear and tear and also the possible thermal problem from the brakes also. I Think I may have a $40 solution. I'd like to recommend an amazing product I have used for years, which is BVM, (Bob Violett Models), "Heat Shield Paint". I know what you may think when the word "models" comes into it, (not the nice ones that prance around either), but honestly this stuff is amazing! I used it a lot on my turbine powered model jets and it really was incredible how this ceramic paint reflected heat and kept structure cool even when the structure or skin was mm from the engine. It sticks like the proverbial and is feather light, and cheap also!! There are probably tons of other places this could be used in composite or otherwise homebuilts but I'd say at a glance that this would be very worthwhile painted on the face of the Fiberglass gear leg that it subjected to radiation heat from the brakes. Some reinforced ventilation slots or holes in the top of the pants would generate convection through the pant also. Check out the BVM website. Matt. -------- Pulsar 1 TD Kit. Captain B777. Licenced Aircraft Maintenance Engineer. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=381665#381665 Subject: Re: Pulsar-List: Upper Rudder Hinge Reinforcement. Hi Sonja, I agree the original design was not very robust. Mine also has some play in it after 20 years of flying but it does not seem to have got any worse in the last 18 years! The original top =91bolt=92 was a cross head machine screw in my kit which I can insert with a cross head screw driver with a dab of silicone adhesive on it to hold the two together during insertion and removal. One day I=92ll get around to a fix similar to yours. Thanks for the ideas. Barry G-XPXP 912 Tail-dragger UK 1030hrs From: Sonja Englert Sent: Friday, August 24, 2012 3:30 PM Subject: Pulsar-List: Upper Rudder Hinge Reinforcement. Over the years, I have watched my upper rudder hinge develop more and more play and now finally decided to fix it. I am rather upset at the poor design of it and how it is almost impossible to install. I don=92t know if they are all the same, but mine consists of two sheet metal tabs, about 0.04=94 thick, the lower one with a nutplate. This material is too thin to be of much use as a bearing. The hole in the upper side of the rudder is the only access and any hardware dropped in there is impossible to get back out without major trouble. When I tried to insert the original bolt (I=92m not sure how one is supposed to do that since the hole is too small to even get a socket in), it fell into the rudder. To improve the situation, I redesigned that hinge for proper function as a bearing and easy installation. I reinforced the stabilizer side by removing the original nut plate, bonding a 1/8=94 thick plate of glass laminate underneath the metal tab and holding it in place by 5 plies glass, extending 3=94 down on the stabilizer. I bonded a new nutplate (1/4=94) underneath this. On the rudder, I made a bushing with a threaded portion on the lower side and a =BC=94 ID for the bolt. It is long enough (upward) that the bolt can be inserted without risk of dropping it into the rudder. The hole in the rudder tab is enlarged to fit the bushing, which is held in place by the nut and also bonded in. The upper end has a slot to be able to turn it with a screwdriver during installation. The bolt (=BC=94, hex) is much longer now. I retained the slot in the head to be able to use a screwdriver instead of a socket for installation. The bolt is held by safety wire on the lower end from backing out. This design has plenty of bearing surface and should not develop play. It is very easy to install it. Anyone working on building these parts should close off the rudder structure below those holes to prevent hardware from falling in. I have shown what I did in the attached sketch (I hope it stays attached). Sonja ________________________________ Message 9 _____________________________________ Time: 12:19:22 PM PST US From: Brian Anderson Subject: Re: Pulsar-List: Upper Rudder Hinge Reinforcement. Sonja, and others, The upper rudder hinge was recognised as a potential problem a long time ago, in fact while I was still building. I closed off the rudder around and below the hinge to prevent water getting in there, and of course it also prevents any bits falling down inside the rudder. Some of us modified the rudder hinge to include a nylon bushing. I found a source locally and supplied quite e number to other builders about that time. The hinge is still held together with a 1/4 screw. I used a SS cap screw and can check the tension from time to time using an allen key. I've not found any play in the bearing in nearly 500 hours, and only very occasionally does the cap screw need a little tweak. I'll attach a sketch of the arrangement, but I suspect it won't travel with the e-mail. If it doesn't go I ail happily send it to anyone who asks. Brian On 25/08/2012, at 2:30 AM, Sonja Englert wrote: > Over the years, I have watched my upper rudder hinge develop more and > more play and now finally decided to fix it. I am rather upset at the > poor design of it and how it is almost impossible to install. I don=92t > know if they are all the same, but mine consists of two sheet metal > tabs, about 0.04=94 thick, the lower one with a nutplate. This material > is too thin to be of much use as a bearing. The hole in the upper side > of the rudder is the only access and any hardware dropped in there is > impossible to get back out without major trouble. > > When I tried to insert the original bolt (I=92m not sure how one is > supposed to do that since the hole is too small to even get a socket > in), it fell into the rudder. > > To improve the situation, I redesigned that hinge for proper function > as a bearing and easy installation. I reinforced the stabilizer side > by removing the original nut plate, bonding a 1/8=94 thick plate of > glass laminate underneath the metal tab and holding it in place by 5 > plies glass, extending 3=94 down on the stabilizer. I bonded a new > nutplate (1/4=94) underneath this. > > On the rudder, I made a bushing with a threaded portion on the lower > side and a =BC=94 ID for the bolt. It is long enough (upward) that the > bolt can be inserted without risk of dropping it into the rudder. The > hole in the rudder tab is enlarged to fit the bushing, which is held > in place by the nut and also bonded in. The upper end has a slot to be > able to turn it with a screwdriver during installation. > > The bolt (=BC=94, hex) is much longer now. I retained the slot in the head > to be able to use a screwdriver instead of a socket for installation. > The bolt is held by safety wire on the lower end from backing out. > This design has plenty of bearing surface and should not develop play. > It is very easy to install it. > > Anyone working on building these parts should close off the rudder > structure below those holes to prevent hardware from falling in. > > I have shown what I did in the attached sketch (I hope it stays attached). > > Sonja > ________________________________ Message 10 ____________________________________ Time: 12:59:03 PM PST US Subject: Re: Pulsar-List: Re: Fiberglass/ foam undercarriage age. From: Cd Mine collapsed outboard just above the axel. It did not collapsed during th e the high speed test, but as soon as I got back to the hangar. Carlos On Aug 24, 2012, at 7:06 AM, "Ray Wilhelm" wrote: > Mine collapsed inboard just above the axel. At the time , I had the suppl ied pants. > > Ray Pulsar III/3300 > > > From: owner-pulsar-list-server@matronics.com [mailto:owner-pulsar-list-ser ver@matronics.com] On Behalf Of barrynorman@comcast.net > Sent: Friday, August 24, 2012 6:40 AM > To: pulsar-list@matronics.com > Subject: Re: Pulsar-List: Re: Fiberglass/ foam undercarriage age. > > I have a Pulsar III with the fiberglass gear and they are wrapped with car bon fiber all the way down to about 2 inches form the end. The last two inch es I wrapped with several revolutions of 2 inch glass tape to try to prevent splitting. To this point I have never had a problem and I have my own custo m build wheel pants and gear leg fairings installed with no vents. > > Are the legs collapsing outward when it happens? > > Barry > > > > To: pulsar-list@matronics.com > Sent: Friday, August 24, 2012 2:34:34 AM > Subject: Re: Pulsar-List: Re: Fiberglass/ foam undercarriage age. > > I had the wheel pants on. > Carlos Pulsar III > > > On Aug 23, 2012, at 1:14 PM, Larry Wheat wrote: > > Carlos, did you have your wheel pants on or off. Cheers, Larry N852LW > > > > On Thu, Aug 23, 2012 at 11:33 AM, Pulsar747N wrote: > I also had the same problem with the glass gear including the carbon wrap m od. I was doing high speed test runs and the excessive heat generated by th e brakes collapsed the left leg about 2 inches up from the upper brake holes .. > I have not done anything yet but I am soon faced with replacing the gear w ith the Grove. > Carlos, Pulsar III / Aeromax > > From: Ray Wilhelm > To: pulsar-list@matronics.com > Sent: Thursday, August 23, 2012 7:42 AM > Subject: RE: Pulsar-List: Re: Fiberglass/ foam undercarriage age. > > > I don't have the details. It was 2 or 3 laps around the lower legs up to > about 18 inches from where the axel is fitted, I think. I don't have the > glass gear anymore. I was the first to install a Grove gear many years ago .. > The glass gear collapsed from excessive heat soak back from doing fast > landing tests. > > Ray Pulsar III/3300 > > > -----Original Message----- > From: owner-pulsar-list-server@matronics.com > [mailto:owner-pulsar-list-server@matronics.com] On Behalf Of mjb777 > Sent: Thursday, August 23, 2012 1:00 AM > To: pulsar-list@matronics.com > Subject: Pulsar-List: Re: Fiberglass/ foam undercarriage age. > > > > rwilhelm(at)dc.rr.com wrote: > > There was also a mod to the Glass gear by Skystar for the Pulsar III. > > It added carbon fiber to the gear legs to stiffen the gear legs. They > > have a tendency to shimmy when landing faster than normal. > > > > Ray Pulsar III/3300 > > > > > > > > > > -- > > > Ray do you have any details of this carbon fibre modification? Was it to t he > whole gear or specific areas? > > Does your Pulsar 3 have a wood or composite spar? > > Matt. > > -------- > Pulsar 1 TD Kit. > Captain B777. > Licenced Aircraft Maintenance Engineer. > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=381581#3ronics.com/Navigator ?Pulsar-List" target="_blank">http://www.matronics.co======= ================ > > > > > > > arget="_blank">http://www.matronics.com/Navigator?Pulsar-List > ttp://forums.matronics.com _blank">http://www.matronics.com/contribution > > > > > -- > Larry Wheat > > > href="http://www.matronics.com/Navigator?Pulsar-List">http://www.matroni cs.com/Navigator?Pulsar-List > href="http://forums.matronics.com">http://forums.matronics.com > href="http://www.matronics.com/contribution">http://www.matronics.com/co ntribution > > > > = --> http://www.matronics.com/Navigator?Pulsar-List > ; http://forums.matronics.com > blank>http://www.matronics.com/contribution > > > > http://www.matronics.com/Navigator?Pulsar-List > http://forums.matronics.com > http://www.matronics.com/contribution > > > ========================== ========= ========================== ========= ========================== ========= ========================== ========= > ________________________________ Message 11 ____________________________________ Time: 01:28:34 PM PST US From: barrynorman@comcast.net Subject: Re: Pulsar-List: Re: Fiberglass/ foam undercarriage age. It's hard to believe there would be that much heat radiating from the rotor to soften the glass that much to collapse it. You would think if the brake s got that hot, it would cook all the grease out of the bearings and transf er heat to the gear leg via the axle. You would also think the top of the w heel pants would melt because the heat rises. Was this happening with the C leveland 5 inch disk brakes? Barry ----- Original Message ----- From: "Cd" Sent: Friday, August 24, 2012 3:59:11 PM Subject: Re: Pulsar-List: Re: Fiberglass/ foam undercarriage age. Mine collapsed outboard just above the axel. =C2-It did not collapsed dur ing the the high speed test, but as soon as I got back to the hangar. Carlos On Aug 24, 2012, at 7:06 AM, "Ray Wilhelm" < rwilhelm@dc.rr.com > wrote: Mine collapsed inboard just above the axel.=C2- At the time , I had the s upplied pants. =C2- Ray=C2-=C2-=C2- Pulsar III/3300 =C2- =C2- From: owner-pulsar-list-server@matronics.com [mailto:owner-pulsar-list-serv er@matronics.com] On Behalf Of barrynorman@comcast.net Sent: Friday, August 24, 2012 6:40 AM Subject: Re: Pulsar-List: Re: Fiberglass/ foam undercarriage age. =C2- I have a Pulsar III with the fiberglass gear and they are wrapped with carb on fiber all the way down to about 2 inches form the end. The last two inch es I wrapped with several revolutions of 2 inch glass tape to try to preven t splitting.=C2-To this point I have never had a problem and I have my ow n custom build wheel pants and gear leg fairings installed with no vents. =C2- Are the legs collapsing outward when it happens? =C2- Barry ----- Original Message ----- > Sent: Friday, August 24, 2012 2:34:34 AM Subject: Re: Pulsar-List: Re: Fiberglass/ foam undercarriage age. I had the wheel pants on. Carlos Pulsar III On Aug 23, 2012, at 1:14 PM, Larry Wheat < lwheat2083@gmail.com > wrote:
Carlos, did you have your wheel pants on or off. Cheers, Larry N852LW =C2- On Thu, Aug 23, 2012 at 11:33 AM, Pulsar747N < pulsar747n@yahoo.com > wrote : I also had the same problem with the glass gear including the carbon wrap m od. =C2-I was doing high speed test runs and the=C2-excessive heat gene rated by the brakes collapsed the left leg about 2 inches up from the upper brake holes. I have not done anything yet but I am soon faced with replacing the gear wi th the Grove. Carlos, Pulsar III / Aeromax=C2-=C2- =C2- From: Ray Wilhelm < rwilhelm@dc.rr.com > Sent: Thursday, August 23, 2012 7:42 AM Subject: RE: Pulsar-List: Re: Fiberglass/ foam undercarriage age. I don't have the details. It was 2 or 3 laps around the lower legs up to about 18 inches from where the axel is fitted, I think. I don't have the glass gear anymore. I was the first to install a Grove gear many years ago. The glass gear collapsed from excessive heat soak back from doing fast landing tests. Ray=C2- Pulsar III/3300 -----Original Message----- From: owner-pulsar-list-server@matronics.com [mailto: owner-pulsar-list-server@matronics.com ] On Behalf Of mjb777 Sent: Thursday, August 23, 2012 1:00 AM Subject: Pulsar-List: Re: Fiberglass/ foam undercarriage age. rwilhelm(at) dc.rr.com wrote: > There was also a mod to the Glass gear by Skystar for the Pulsar III. > It added carbon fiber to the gear legs to stiffen the gear legs. They > have a tendency to shimmy when landing faster than normal. > > Ray=C2- =C2- =C2- Pulsar III/3300 > > > > > -- Ray do you have any details of this carbon fibre modification? Was it to th e whole gear or specific areas? Does your Pulsar 3 have a wood or composite spar? Matt. -------- Pulsar 1 TD Kit. Captain B777. Licenced Aircraft Maintenance Engineer. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=381581#3ronics.com/Navigator? Pulsar-List " target="_blank"> http://www.matronics.co ====== ================== =C2- =C2- arget="_blank"> http://www.matronics.com/Navigator?Pulsar-L ist ttp://forums.matronics.com _blank"> http://www.matronics.com/contributi on =C2- -- Larry Wheat =C2- =C2- href=" http://www.matronics.com/Navigator?Pulsa r-List "> http://www.matronics.com/Navigator?Pulsar-List href=" http://fo rums.matronics.com "> http://forums.matronics.com href=" http://www.matro nics.com/contribution "> http://www.matronics.com/contribution =C2- =C2- =C2- = --> http://www.matronics.com/Navigator?Pulsar-List ; http ://forums.matronics.com blank> http://www.matronics.com/contribution =C2- =C2- =C2- http://www.matronics.com/Navigator?Pulsar-List http://forums .matronics.com http://www.matronics.com/contribution =C2- href="http:// www.matronics.com/Navigator?Pulsar-List">http://www.matronics.com/Navigator ?Pulsar-List href="http://forums.matronics.com">http://forums.matronics.c om href="http://www.matronics.com/contribution">http://www.matronics.com/ contribution
== ________________________________ Message 12 ____________________________________ Time: 08:49:00 PM PST US From: "Ray Wilhelm" Subject: RE: Pulsar-List: Re: Fiberglass/ foam undercarriage age. Yes, Cleveland. And no other damage. Break seals were changed after about 400 hours. Ray From: owner-pulsar-list-server@matronics.com [mailto:owner-pulsar-list-server@matronics.com] On Behalf Of barrynorman@comcast.net Sent: Friday, August 24, 2012 1:23 PM Subject: Re: Pulsar-List: Re: Fiberglass/ foam undercarriage age. It's hard to believe there would be that much heat radiating from the rotor to soften the glass that much to collapse it. You would think if the brakes got that hot, it would cook all the grease out of the bearings and transfer heat to the gear leg via the axle. You would also think the top of the wheel pants would melt because the heat rises. Was this happening with the Cleveland 5 inch disk brakes? Barry _____ From: "Cd" Sent: Friday, August 24, 2012 3:59:11 PM Subject: Re: Pulsar-List: Re: Fiberglass/ foam undercarriage age. Mine collapsed outboard just above the axel. It did not collapsed during the the high speed test, but as soon as I got back to the hangar. Carlos On Aug 24, 2012, at 7:06 AM, "Ray Wilhelm" wrote: Mine collapsed inboard just above the axel. At the time , I had the supplied pants. Ray Pulsar III/3300 From: owner-pulsar-list-server@matronics.com [mailto:owner-pulsar-list-server@matronics.com] On Behalf Of barrynorman@comcast.net Sent: Friday, August 24, 2012 6:40 AM Subject: Re: Pulsar-List: Re: Fiberglass/ foam undercarriage age. I have a Pulsar III with the fiberglass gear and they are wrapped with carbon fiber all the way down to about 2 inches form the end. The last two inches I wrapped with several revolutions of 2 inch glass tape to try to prevent splitting. To this point I have never had a problem and I have my own custom build wheel pants and gear leg fairings installed with no vents. Are the legs collapsing outward when it happens? Barry _____ > Sent: Friday, August 24, 2012 2:34:34 AM Subject: Re: Pulsar-List: Re: Fiberglass/ foam undercarriage age. I had the wheel pants on. Carlos Pulsar III On Aug 23, 2012, at 1:14 PM, Larry Wheat wrote: Carlos, did you have your wheel pants on or off. Cheers, Larry N852LW On Thu, Aug 23, 2012 at 11:33 AM, Pulsar747N wrote: I also had the same problem with the glass gear including the carbon wrap mod. I was doing high speed test runs and the excessive heat generated by the brakes collapsed the left leg about 2 inches up from the upper brake holes. I have not done anything yet but I am soon faced with replacing the gear with the Grove. Carlos, Pulsar III / Aeromax _____ From: Ray Wilhelm Sent: Thursday, August 23, 2012 7:42 AM Subject: RE: Pulsar-List: Re: Fiberglass/ foam undercarriage age. I don't have the details. It was 2 or 3 laps around the lower legs up to about 18 inches from where the axel is fitted, I think. I don't have the glass gear anymore. I was the first to install a Grove gear many years ago. The glass gear collapsed from excessive heat soak back from doing fast landing tests. Ray Pulsar III/3300 -----Original Message----- From: owner-pulsar-list-server@matronics.com [mailto:owner-pulsar-list-server@matronics.com] On Behalf Of mjb777 Sent: Thursday, August 23, 2012 1:00 AM Subject: Pulsar-List: Re: Fiberglass/ foam undercarriage age. rwilhelm(at)dc.rr.com wrote: > There was also a mod to the Glass gear by Skystar for the Pulsar III. > It added carbon fiber to the gear legs to stiffen the gear legs. They > have a tendency to shimmy when landing faster than normal. > > Ray Pulsar III/3300 > > > > > -- Ray do you have any details of this carbon fibre modification? Was it to the whole gear or specific areas? Does your Pulsar 3 have a wood or composite spar? Matt. -------- Pulsar 1 TD Kit. Captain B777. Licenced Aircraft Maintenance Engineer. 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