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Army T-41B Restoration 3/07/2014

Fri Mar 07, 2014 10:49 am

The wings received an extensive rebuild and have now been re-installed on the aircraft. Rigging is next but is time consuming as all cables and AP servos were removed during the wing rebuilds. You can see the number of new parts and skins installed with the epoxy primer showing.

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Re: Army T-41B Restoration 3/07/2014

Fri Mar 07, 2014 11:03 am

What sort of aftermarket STOL kit is installed? (judging by the stall fences on the wings) Are you going to wash the wings in (a bit faster) or out (a bit more stable)?

Re: Army T-41B Restoration 3/07/2014

Fri Mar 07, 2014 11:32 am

The Inspector wrote:What sort of aftermarket STOL kit is installed? (judging by the stall fences on the wings) Are you going to wash the wings in (a bit faster) or out (a bit more stable)?


Horton STOL kit installed by the DEA when they were operating the aircraft. The wings are being rigged per the service manual using the concentric bushings. Once we test fly it the wings will be adjusted as needed. Both wings were jigged and measured after rebuild and the tip washout was right on factory spec so we don't anticipate a lot of adjustment.

I understand what you are asking about the bushing and lowering or raising the inboard trailing edge and we may revisit at a later time but right now because of the extensive wing rebuild we we following the service manual on rigging to the letter.

The STOL kit will most likely slow the aircraft down one or two knots in cruise but I am fine with that.

Re: Army T-41B Restoration 3/07/2014

Fri Mar 07, 2014 11:46 am

L-4Pilot wrote:
The Inspector wrote:What sort of aftermarket STOL kit is installed? (judging by the stall fences on the wings) Are you going to wash the wings in (a bit faster) or out (a bit more stable)?


Horton STOL kit installed by the DEA when they were operating the aircraft. The wings are being rigged per the service manual using the concentric bushings. Once we test fly it the wings will be adjusted as needed. Both wings were jigged and measured after rebuild and the tip washout was right on factory spec so we don't anticipate a lot of adjustment.

I understand what you are asking about the bushing and lowering or raising the inboard trailing edge and we may revisit at a later time but right now because of the extensive wing rebuild we we following the service manual on rigging to the letter.

The STOL kit will most likely slow the aircraft down one or two knots in cruise but I am fine with that.

The kit may surprise you, the Robertson STOL kits leading edge recontour actually moved the center of pressure aft a smidge and took out some of the inherent nose up built into the airplane (on the 210 kit, we actually installed a pitot head mount that was at a different angle from the factory one to compensate for the more level flight characteristics). The fences will aid some in low speed aileron control. Cessna used the R/STOL leading edge contour profile for later 172-210 models as factory, making our job that much easier by eliminating all the BONDO dust and sanding. The guys at SOLOY went even further with leading edge contours and 'tricks' making the turbine 207 a real 'tennis court' airplane.
It should be a pleasure to putt aound in-

Re: Army T-41B Restoration 3/07/2014

Fri Mar 07, 2014 12:29 pm

Thanks for that information. I am looking forward to flying the aircraft and it should be a lot of fun with the 210 hp engine and STOL kit. I have a lot of O-1 Bird Dog time (1500 hrs) and the T-41B is sort of like a Bird Dog with a nose wheel. :)
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