KR> Main gear locations/Tail to nosewheel with diehl gear
I've done this for different reasons - I bought a set of diehl mains used from someone on this site, and they were taildragger legs, but I'm doing a tri-gear plane. I put the gear on the back of the spar, but I am now grappling with the tire-alignment issue The gear I got was pre-drilled, and the result is that my wheels do not line up right Considering either re-drilling, or ordering new fiberglass legs... I don't know if the additional 4 holes in the bottom of the existing legs will weaken them/etc... On 8/20/2014 11:40 AM, Sid Wood via KRnet wrote: > Now we are getting somewhere. After reading Larry's message regarding > gear location, I took a long hard look at the gear location and Diehl > gear leg attachment at the main spar. The axles are at 4-1/4 inches > from the aft face of the main spar on my KR-2. Compare that to 7 > inches for Joe Horton. Turns out the fiberglass gear leg on both legs > at the spar end have two cut angles. One side has a greater cut angle > than the other side. I chose the smaller taper to put against the > mounting bracket and that resulted in putting the gear 3 inches to far > forward. > My plan is to swap the left and right gear legs and flip them to get > the wheel alignment back to 0 toe in. Hopefully the bolt holes will > line up. That also means cutting into the fiber glass on the bottom of > the wing to get access. If the bolt holes don't line up or cannot get > the required wheel location, then will have to get a new set of gear > legs and try again. If there is a way to screw it up, I have every > confidence I can figure out how to make it happen. > > LESSON LEARNED: For tri-gear, the axles should be 20 inches from the > leading edge of the stub wing on the RAF airfoil or 7 inches from the > aft face of the main spar. > > Sid Wood > Tri-gear KR-2 N6242 > Mechanicsville, MD, USA > > > >> >> Sid has his main axle distance 17" aft of the stub wing leading edge, > > What Joe Horton wrote is that his axle center line is 7" behind the > AFT face or back side of his main carry through spar. Not the forward > face of the main spar. There is about a 2 1/2" difference in placement > of the axle center line if you measure from the forward face of the spar. > > What Joe Horton said is absolutely correct. Everyone's main carry > through spar should be in exactly the same place. Don't measure off > the leading edge of the wing, measure off of the main carry through > spar. This is not Rocket Science! Dan Diehls landing gear and > brackets leave no room for error if you follow his instructions. If > you want a tricycle set up bolt the Diehl Main Gear brackets on the > aft side / back side of the main carry through spar. If you want a > tail dragger then place the Diehl brackets on the front side of the > spar. Then drill and bolt the fiberglass leg to this bracket by > placing the cut angle on the top forward side of the leg against the > bracket. If you push the leading edge of the glass leg fully flush > against the rear face of the shear web on the Diehl bracket for a > tricycle gear it places your axle center line in the proper place. In > Joes case his axle center line is 7" behind or from the back side of > the main carry through spar. If you decide to ge! > t creative on your own by not placing the cut angle fully against the > aft face of the shear web then you will run into problems. > > Larry Howell > > > -- > > > > > ___ > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. > To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org > please see other KRnet info at http://www.krnet.org/info.html > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to > change options
KR> Main gear locations
At 01:40 PM 8/20/2014, you wrote: >My plan is to swap the left and right gear legs and flip them to get >the wheel alignment back to 0 toe in. Hopefully the bolt holes will >line up. If the bolt holes don't line up or cannot get the required >wheel location, then will have to get a new set of gear legs and try again. ++ If the holes don't line up, drill new holes with the required edge material. And, your KR will be lighter by the amount of the removed material. :-) Larry Flesner
KR> Main gear locations
Now we are getting somewhere. After reading Larry's message regarding gear location, I took a long hard look at the gear location and Diehl gear leg attachment at the main spar. The axles are at 4-1/4 inches from the aft face of the main spar on my KR-2. Compare that to 7 inches for Joe Horton. Turns out the fiberglass gear leg on both legs at the spar end have two cut angles. One side has a greater cut angle than the other side. I chose the smaller taper to put against the mounting bracket and that resulted in putting the gear 3 inches to far forward. My plan is to swap the left and right gear legs and flip them to get the wheel alignment back to 0 toe in. Hopefully the bolt holes will line up. That also means cutting into the fiber glass on the bottom of the wing to get access. If the bolt holes don't line up or cannot get the required wheel location, then will have to get a new set of gear legs and try again. If there is a way to screw it up, I have every confidence I can figure out how to make it happen. LESSON LEARNED: For tri-gear, the axles should be 20 inches from the leading edge of the stub wing on the RAF airfoil or 7 inches from the aft face of the main spar. Sid Wood Tri-gear KR-2 N6242 Mechanicsville, MD, USA > > Sid has his main axle distance 17" aft of the stub wing leading edge, What Joe Horton wrote is that his axle center line is 7" behind the AFT face or back side of his main carry through spar. Not the forward face of the main spar. There is about a 2 1/2" difference in placement of the axle center line if you measure from the forward face of the spar. What Joe Horton said is absolutely correct. Everyone's main carry through spar should be in exactly the same place. Don't measure off the leading edge of the wing, measure off of the main carry through spar. This is not Rocket Science! Dan Diehls landing gear and brackets leave no room for error if you follow his instructions. If you want a tricycle set up bolt the Diehl Main Gear brackets on the aft side / back side of the main carry through spar. If you want a tail dragger then place the Diehl brackets on the front side of the spar. Then drill and bolt the fiberglass leg to this bracket by placing the cut angle on the top forward side of the leg against the bracket. If you push the leading edge of the glass leg fully flush against the rear face of the shear web on the Diehl bracket for a tricycle gear it places your axle center line in the proper place. In Joes case his axle center line is 7" behind or from the back side of the main carry through spar. If you decide to ge! t creative on your own by not placing the cut angle fully against the aft face of the shear web then you will run into problems. Larry Howell --
KR> Main gear locations
> Lawrence Bell wrote: > > Sid has his main axle distance 17" aft of the stub wing leading edge, Joe > has his 7" aft of the forward face of the main spar. What Joe Horton wrote is that his axle center line is 7" behind the AFT face or back side of his main carry through spar. Not the forward face of the main spar. There is about a 2 1/2" difference in placement of the axle center line if you measure from the forward face of the spar. What Joe Horton said is absolutely correct. Everyone's main carry through spar should be in exactly the same place. Don't measure off the leading edge of the wing, measure off of the main carry through spar. This is not Rocket Science! Dan Diehls landing gear and brackets leave no room for error if you follow his instructions. If you want a tricycle set up bolt the Diehl Main Gear brackets on the aft side / back side of the main carry through spar. If you want a tail dragger then place the Diehl brackets on the front side of the spar. Then drill and bolt the fiberglass leg to this bracket by placing the cut angle on the top forward side of the leg against the bracket. If you push the leading edge of the glass leg fully flush against the rear face of the shear web on the Diehl bracket for a tricycle gear it places your axle center line in the proper place. In Joes case his axle center line is 7" behind or from the back side of the main carry through spar. If you decide to get creative on your own by not placing the cut angle fully against the aft face of the shear web then you will run into problems. Larry Howell
KR> Main gear locations
Sid has his main axle distance 17" aft of the stub wing leading edge, Joe has his 7" aft of the forward face of the main spar. Since the leading edge of the stub wing should 10.75" forward of the forward edge of the main spar they are essentially in the same position for a tri -gear. It seems to me the difference is other loading aft of the gear. According to Sid's w&b he is right in the middle of the range. I assume Joe's is the same since he flies in balance. Going to the folks that like physics, something doesn't compute. Moving the wheels aft would fix the ground imbalance but would move the C.G. a little aft. My thoughts, Larry Bell On Wed, Aug 13, 2014 at 10:04 PM, Comcast via KRnet wrote: > I've built my own gear and I measure out at 18"s back from the leading > edge to the axle center for the mains. 10"s from fire wall forward to axle > center. > > Dan Prichard > Portland Oregon > > Sent from my iPad > > > On Aug 13, 2014, at 9:28 PM, Paul Visk via KRnet > wrote: > > > > I believe that Sid was going to but his mains at 20" behind the leading > edge. > > > > > > Sent on the new Sprint Network from my Samsung Galaxy S?4. > > > > Original message From: > "joe.kr2s.builder--- via KRnet" > Date:08/13/2014 9:40 PM (GMT-06:00) To: > smwood at md.metrocast.net Cc: krnet at list.krnet.org > Subject: KR> Main gear locations > > Sid,I just happen to have measured my locations for mains and nose > wheel the other night to compare to the new project. N357CJ main axle > center line is 7" behind the main spar and the nose wheel axle is 10" in > front of the firewall. I agree that the actual dimension is not in the > instructions but this is where it ends up if all the landing gear parts > that come with the Deihl kit are used in the instructed configuration. I > checked it against the project that I am working on and it is nearly > identical even thought the fuselages are very different. I know that yours > is a KR2 but the location relative to the spar is always going to be the > same. I don't remember that you mentioned the location relative to the spar > but only was it related to the weight and balance stations.Joe Horton > > > > > > NetZero now offers 4G mobile broadband. Sign up now. > > http://www.netzero.net/?refcd=NZINTISP0512T4GOUT1 > > ___ > > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. > > To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org > > please see other KRnet info at http://www.krnet.org/info.html > > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to > change options > > ___ > > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. > > To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org > > please see other KRnet info at http://www.krnet.org/info.html > > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to > change options > > ___ > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. > To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org > please see other KRnet info at http://www.krnet.org/info.html > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options >
KR> Main gear locations
Sid,I just happen to have measured my locations for mains and nose wheel the other night to compare to the new project. N357CJ main axle center line is 7" behind the main spar and the nose wheel axle is 10" in front of the firewall. I agree that the actual dimension is not in the instructions but this is where it ends up if all the landing gear parts that come with the Deihl kit are used in the instructed configuration. I checked it against the project that I am working on and it is nearly identical even thought the fuselages are very different. I know that yours is a KR2 but the location relative to the spar is always going to be the same. I don't remember that you mentioned the location relative to the spar but only was it related to the weight and balance stations.Joe Horton NetZero now offers 4G mobile broadband. Sign up now. http://www.netzero.net/?refcd=NZINTISP0512T4GOUT1
KR> Main gear locations
I believe that Sid was going to but his mains at 20" behind the leading edge.? Sent on the new Sprint Network from my Samsung Galaxy S?4. Original message From: "joe.kr2s.builder--- via KRnet" Date:08/13/2014 9:40 PM (GMT-06:00) To: smwood at md.metrocast.net Cc: krnet at list.krnet.org Subject: KR> Main gear locations Sid,I just happen to have measured my locations for mains and nose wheel the other night to compare to the new project. N357CJ main axle center line is 7" behind the main spar and the nose wheel axle is 10" in front of the firewall. I agree that the actual dimension is not in the instructions but this is where it ends up if all the landing gear parts that come with the Deihl kit are used in the instructed configuration. I checked it against the project that I am working on and it is nearly identical even thought the fuselages are very different. I know that yours is a KR2 but the location relative to the spar is always going to be the same. I don't remember that you mentioned the location relative to the spar but only was it related to the weight and balance stations.Joe Horton NetZero now offers 4G mobile broadband. Sign up now. http://www.netzero.net/?refcd=NZINTISP0512T4GOUT1 ___ Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org please see other KRnet info at http://www.krnet.org/info.html see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options
KR> Main gear locations
I've built my own gear and I measure out at 18"s back from the leading edge to the axle center for the mains. 10"s from fire wall forward to axle center. Dan Prichard Portland Oregon Sent from my iPad > On Aug 13, 2014, at 9:28 PM, Paul Visk via KRnet > wrote: > > I believe that Sid was going to but his mains at 20" behind the leading edge. > > > Sent on the new Sprint Network from my Samsung Galaxy S?4. > > Original message From: "joe.kr2s.builder--- > via KRnet" Date:08/13/2014 9:40 PM > (GMT-06:00) To: smwood at md.metrocast.net Cc: krnet at > list.krnet.org Subject: KR> Main gear locations > Sid,I just happen to have measured my locations for mains and nose > wheel the other night to compare to the new project. N357CJ main axle center > line is 7" behind the main spar and the nose wheel axle is 10" in front of > the firewall. I agree that the actual dimension is not in the instructions > but this is where it ends up if all the landing gear parts that come with > the Deihl kit are used in the instructed configuration. I checked it against > the project that I am working on and it is nearly identical even thought the > fuselages are very different. I know that yours is a KR2 but the location > relative to the spar is always going to be the same. I don't remember that > you mentioned the location relative to the spar but only was it related to > the weight and balance stations.Joe Horton > > > NetZero now offers 4G mobile broadband. Sign up now. > http://www.netzero.net/?refcd=NZINTISP0512T4GOUT1 > ___ > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. > To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org > please see other KRnet info at http://www.krnet.org/info.html > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options > ___ > Search the KRnet Archives at http://tugantek.com/archmailv2-kr/search. > To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org > please see other KRnet info at http://www.krnet.org/info.html > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options
