Hi Neil, Thanks for the gen. I've had a call from Dave who confirmed the cables to be 3/32". I'm slowly getting through the permit renewal on GAVTC and I've had a fine time with the aileron circuit. The port aileron has enough free motion, stick fixed, to require attention and it is wear in eit...

Hi Chaps, I've searched my documentation and drawings but cannot find the type of cable used for the ailerons and elevator runs. My aircraft is likely to have an original set and I need to find out if they are 10cwt or 3/32" to set up the tension gauge. Can anybody tell me what the original Mk3...

Hello Paul and Nipper fans; Paul, we were in contact about 18 months ago regarding Nipper canopies and I was building an oven then for that purpose. Unfortunately the tenure of the Gliding Club at Bicester was then at it’s most fragile and, although that is now settled after a period of protracted u...

Hi Peter, My Nipper is a Slingsby Mk3 and I've been attending to a few mods, although glider winter maintenance has kept me busy since last October. I have posted some progress on the engineering forum, topic: GATVC; seat & harness, wheels & brakes, & instrument panel I would recommend t...

Thanks Neil, that sorts out the straps. Re the angle and seat back, plan A; 1. delete the angle. The four hinge positions at the four bolt positions are made by replacing the bolts with eye bolts. The seat back lower flange will be built up to supply all the seat pan stiffness required. 2. delete th...

Hi All, I need clarification about the seat assembly. In Drawing 11, cockpit and canopy details - top left corner, There is a view on K which shows the wrap around strap (part F46) which secures the aft edge of the seat pan to the fuselage cross member. How many of these straps are needed? The drawi...

Progress on the harness installation. This is pretty well complete and ready for a write-up as a mod for the LAA. It will need formal stress calculations but the 'back of envelope' sums show this simple arrangement to be so overfactored that you would better worry about where the engine and fuel tan...

Neil, Thanks for the comment, it reminds me of a conundrum I haven't been able to solve. The discs I've used are unmarked but, if you look at any which are marked with the direction of rotation, they appear to put the spokes in compression which is very counter intuative. I would love to know why th...

Well that was only partialy successful. I'm not sure why the reduced photo was still so large and drove the width of the post. Also some text and a picture was lost. missing text; To finish the seat back; trim the unfinished upstand edges drill the hole for the attachment bolts (same as original) cu...

It's been over a year since I started this thread so a progress report is long overdue. Gider maintenance at Windrushers and life in general have thrown considerable delay into plan A but the end game is in sight. I'll put all my information in a file for anybody that would like it when the mods get...

Wonderful!

Note the expression on the young lady's face. It is exactly the same as I've seen from my wife many times and it translates exactly from any language as "You stupid man!"

Which is precisely what she said on watching the video.



Jim

Rob, I think we are in the business here of making things work in an acceptable manner, rather than trying to guess what somebody did many years ago! It certainly makes my head ache trying to imagine how your mechanism got assembled like that. I've been amused by the variety of bolts I've found used...

Neil, thanks for the instructions on posting pictures - I hope to have something worth viewing soon! I am working as fast as I can on the LAA mod papers but they are not on the critical path as the aircraft can be flown for it's permit renewal unmodified. By far the most critical part is the wheelbr...

I stand corrected here. As Stuart has said the plans call for an A59 series close tolerance bolt rather than the A25 standard tolerance I had assumed. Unless the drawings call for a reamed hole it seems inconsistent to call up a precision bolt for a drilled hole assembly. But maybe I'm trying to sec...

Progress report First a rather embarrassing error – I typo’d the registration of my aircraft in the thread title. It should read GAVTC, as it does in large red letters on the side of the aircraft! The seat back and shoulder harness mods were discussed with Francis at the LAA test pilot lecture and v...