1500# Gross mods Harer

[d.a.]

Sorry if this has been covered before, I looked but couldn't find it. What all is involved in converting a BC12D to the 1500 pound gross weight configuration? Is this refered to as the model 19 mod? What is the highest horse power that you can run BEFORE the 19 mods?
Thanks in advance
Dave

[d.a.]

One last thing. Are the prewar, pre BC12 aircraft eligible for the upgrade? Thanks again.
Dave

[matsuthunder200]

Dave I have a 1946 bc12d and i upgraded to 1500 gross wt . The upgrade is in the gilberti stc. wasnt to hard to do you haft to weld in a cross tube in the baggage comp, put bushings in the wing spars and box in the fitting where the front wing strut attaches to the wing. if you want i can get a copy of the paperwork that i have and email it to you

[Forrest Barber]

Harer STC

Yes all this is on the web site.... www.taylorcraft.org take some time surf about. Use the faq section check it ALL out.

the old Gilberti STC is now the Harer STC and includes all "B" models they can go to 1500# ; biggest engine would be a 180HP Lycoming.... bye Forrest

[d.a.]

Lance,
Thanks for the response. Yes, if you don't mind I'd really like to get a copy of the paperwork. Also, my son and I are hoping to get up that way during this Summer, possibly even moving there. When we get up there we'd like to meet up with you and check out your ship as well as pick your brain about Alaska. I'll PM you directly.

Forrest,
I had imagined that this would have been one of the primary subjects of the past, but I just couldn't find it. I'm still learning my way around your great site. Thanks

Dave Adam

[Lubeck]

d.a. The Harer STC should be purchased from the owner. The cost is $250.

Forrest: You have stated that the Harer STC applies to all "B" models. It would be a benefit to all if you could post the letter from Taylorcraft that states that all "B" models are equivalent. The Harer STC states that it applies to the BC models. I had to prove to the local FAA that the BL model was the same as the BC model.

The Harer STC allows the installation of the 85 Hp engine. I would like to know how you could install an engine larger 85 hp. I have seen on previous posts that you need to make the same modifications that are in the Type Certificate, but how does one know exactly what the changes stated in the TC involve?

The Harer STC modifies the airplane to the equivalent of the model 19. It makes no reference to the year of the "B" model. A 1941 B model and a 1946 B model can both be modified by the Harer STC. You do not need to change the vertical stabilizer and rudder from the 3 hinge to the 2 hinge configuration.

The Harer STC converts the BL, BC, or BF model (TC A-700 or A-696) to the Model 19 (TC1A9). The F-19 is also covered by the TC 1A9 and doesn't state that any structural changes have been made to the model 19 with the installation of the 100 hp engine. Therfore you should be able to install the 100 hp in stead of the 85hp. The TC states that the F21 is similar to the Model F19 except for the installation of the 118 hp engine.

Can this information be used to make modifications to a model B aircraft and convert it to the model F-19, F21,or F22 without a field modification or an STC? What about that 3 Hinge vertical stabilizer and rudder?

Ten years ago I used the Harer STC to convert my 1941 BL12-65 to an F19. I previously flew a 1946 BC12D that was converted to a F19. The paper work used the Harer STC with the installation of the 100hp engine. I just followed the previous paper work when I did the 41.

[d.a.]

Thomas,
You might have a point there. If you can show documentation that you are incorporating the model 19 mods as per the factory drawings, bringing it up to Model 19 configuration, you should be able to use whatever is in the TCDS for that model. Don't quote me just yet, I'll look into it, but I think that might be right.
Dave Adam