Original Posted By: mboynton(at)excite.com
Pietenpol-List: longerons
RE: Pietenpol-List: longerons
Original Posted By: owner-pietenpol-list-server(at)matronics.com
Over the past few years there have been several discussions about ribsteaming, but never about longeron steaming. I think Larry is the first oneI have heard who is steaming Longerons.Larry- I did not steam the longerons, just used retaining blocks around thebend. I wonder if the reason you didn't get a gentle curve at the firststation was because the steaming made the wood too "rubbery" and soft?Also, you might want to place the longerons so that the grain direction isvertical to get the most strength.Al Swanson-----Original Message-----
Over the past few years there have been several discussions about ribsteaming, but never about longeron steaming. I think Larry is the first oneI have heard who is steaming Longerons.Larry- I did not steam the longerons, just used retaining blocks around thebend. I wonder if the reason you didn't get a gentle curve at the firststation was because the steaming made the wood too "rubbery" and soft?Also, you might want to place the longerons so that the grain direction isvertical to get the most strength.Al Swanson-----Original Message-----
Re: Pietenpol-List: longerons
Original Posted By: "Alan Swanson"
If your longeron broke while bending, inspect your wood very carefully. Itmight have been defective to start. Does the grain have the proper slope?Was there a pitch pocket at the break? Was it the right size and shape? Allbends should be gentle not abrupt.Cy Galley, TC - Chair, Emergency Aircraft Repair, OshkoshEditor, EAA Safety Programscgalley(at)qcbc.org or experimenter(at)eaa.orghttp://www.eaa.org for latest flying rules----- Original Message -----
If your longeron broke while bending, inspect your wood very carefully. Itmight have been defective to start. Does the grain have the proper slope?Was there a pitch pocket at the break? Was it the right size and shape? Allbends should be gentle not abrupt.Cy Galley, TC - Chair, Emergency Aircraft Repair, OshkoshEditor, EAA Safety Programscgalley(at)qcbc.org or experimenter(at)eaa.orghttp://www.eaa.org for latest flying rules----- Original Message -----
> > Re: Pietenpol-List: longerons
Original Posted By: "Warren D. Shoun"
> > > Re: Pietenpol-List: longerons
Original Posted By: "Greg Cardinal"
> > > Re: Pietenpol-List: longerons
Original Posted By: Larry Neal
Re: Pietenpol-List: longerons
Original Posted By:
According to everything that I have read, the lines of grain should run inthe same plane as the bend e.g. for rib capstrips the grain is vertical. Ibelieve the best source for this info is Bingelis.When you put the longeron in the jig, the lines of grain should be parallelto the table top.Chris BobkaTech Counselor----- Original Message -----
According to everything that I have read, the lines of grain should run inthe same plane as the bend e.g. for rib capstrips the grain is vertical. Ibelieve the best source for this info is Bingelis.When you put the longeron in the jig, the lines of grain should be parallelto the table top.Chris BobkaTech Counselor----- Original Message -----
Re: Pietenpol-List: longerons
Original Posted By:> Christian Bobka
See I always understood the grain should be horizontal. It is calledvertical grain lumber, but when you look at the end of your spars, thegrain will be horizontal. I did the same with the rib capstrips and thelongerons. I don't think there is much of a strength issue either way. Vertical grain lumber is used as it warps less.Wayne Sippola, Winnipeg----------
See I always understood the grain should be horizontal. It is calledvertical grain lumber, but when you look at the end of your spars, thegrain will be horizontal. I did the same with the rib capstrips and thelongerons. I don't think there is much of a strength issue either way. Vertical grain lumber is used as it warps less.Wayne Sippola, Winnipeg----------
> > > > > Re: Pietenpol-List: longerons
Original Posted By: GeneT(at)iwon.com
> Re: Pietenpol-List: longerons
Original Posted By:>
> > > According to everything that I have read, the lines of grain should runin> the same plane as the bend e.g. for rib capstrips the grain is vertical. I> believe the best source for this info is Bingelis.> > When you put the longeron in the jig, the lines of grain should beparallel> to the table top.> > Chris Bobka> Tech Counselor> ----- Original Message -----
> > > According to everything that I have read, the lines of grain should runin> the same plane as the bend e.g. for rib capstrips the grain is vertical. I> believe the best source for this info is Bingelis.> > When you put the longeron in the jig, the lines of grain should beparallel> to the table top.> > Chris Bobka> Tech Counselor> ----- Original Message -----