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
