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Grab a coffee as this my take a minute. I have been procrastinating for sometime and was reluctant to post this. A health kick in the head has pushed me with getting on asking for some wisdom. I know that there will be strong opinions and a critical eye is always good. We are 3 partners that...

There is a big difference between the size and weight of the engine so the mounts would be different. The 470 is almost 100lbs heavier plus 20-50hp. There are salvage yards that sell the Cessna 337 rear mount. The front mounts in a 337 are aluminum sheet fabrications. There are tons of Cessna...

We installed a Continental IO-360 210 hp with an 84" McCauley CS prop. It was a 800 hour front engine off a Cessna 337 that we got for reasonable. Th engine checked out and has the cold compression of a new engine. The owner of the 337 had more money than the average bear and had both engines...

This may have been described before and if it is repetition then apologies. Occasionally during the build we used the drill press as a lathe. We squared bushings by chucking the bushing and feeding it gentle into a file on the drill press tables. We do not have a lathe but with care work can be...

I don't know if this has been discussed. Our build has the typical BH seaplane doors. We curved the lower door frame to follow the cowl at the hinges. The rear of the door is flat to follow the fuselage. There is a diagonal stiffener in the door that I think should be arched to help the door...

This may seem like a dumb question but I did not see it anywhere. When installing the rudder cables where is the rudder position in the process? Is the rudder aligned with the centerline of the fuselage or is the top aligned with the top of the vertical stabilizer following the fin's offset...

We just bought the Garmin GTR-200 radio that is a new model that has the features of their certified radios but at a lower price. Garmin is not certifying the radio to keep costs low for homebuilders & to be competitive in the homebuilt market. I did research on the radio that it has everything...

Robert440 raises an excellent point about painting safety. Read the MSDS sheets for everything that you use. For example Stewart Systems and others that are waterborne product use the word eco friendly. I read the MSDS sheets for our Stewarts Urethane so we used proper masks & Tyvek coveralls...

Our Bearhawk wings are about 66" wide at the ends where the wing is full width against the fuselage and at the other end the tail rib is the full wing pattern. This is the typical configuration of a bare wing. You may want to check the inside dimensions of the trailer against the fuselage if it...

Mark maybe able to create a pressure cowl similar to those built by James Aircraft & LoPresti. He has the right cowl shape for a high performance cowl. James Aircraft make the eductor rings or they could be formed into the cowling. An eductor is easy to build and accelerates air or water through...

This is to share information and not push one engine over another but to share information. We were offered the opportunity of picking up a Continental IO-360 from a local air service that flies about 20 Cessna 337's for fire spotting across northern Ontario. The mechanics had removed a pair off...

There was conversation on drilling capstrips. I thought this may be of interest for riveting the spars & especially if working alone. The spars were assembled on a horizontal ladder hanging over the edge of the table. String lines were used to get the ladder flat and plywood strips used to make...

Would any builders who used 3/8" fuel lines & did the fuel flow tests with please let me know what their flow results were. We are installing a Continental IO-360 with a positive displacement engine driven pump that pushes 160 lb/hr at full throttle. FAR 23 requires the fuel supply to be 125%...

This was posted in response to jig drilling spar capstrips. It was suggested to post this in the building tips forum. " We laid the capstrips on the spar, marked the rib intersections and critical holes then gang drilled all 4 cap strips at one time. Pulled them apart & used the one that goes...

I was wondering if there was a way to take down a posting in the "Classifieds - 4sale or WTB ". That way if an item is sold the seller can remove the item & follow ups or notify a moderator. It will help to keep just relevant items in the classifieds as it could get larger than it need be...

Re: Painting Inspection Doors on the Wing. Bob asked about painting the inspection doors for the wings. Eric & Mark recommended to put them loose on the wing & the paint would get all the edges which worked good. We put a screw in each corner & placed a spacer on each screw between the...

There has been some back & forth as to about dies and parts to flange rib lightening holes etc. I decide that I would share what we did & used as it worked great for us. The first 14 pages illustrate how to accurately make all your jigs & dies with a Lee Valley precision circle cutter base for...