Looking at the TCDS for a 1969 7GCBC... section XX. There are 4 notes for landing gear configuration and those allow different tires sizes including 6.00-6 4 ply or 6 ply, 7.00-6 6-ply, 8.00-6 4 ply. 2 of these apply to spring steel gear with Cleveland brakes. Then there are specifications for installation drawings... 7-1307, 7-1291,7-1404 or 4-2038. Note 201 (h) does't allow 6.00-6 4 ply but 201 (i) does.
The question is how do I know which if any of these configurations he has? I have the original equipment list but it isn't listed there. The airplane has 6.00-6 4-ply tires but it came with 7.00-6 6-ply. Trying to make sure my client is legal here. Help! Thanks!
Good day, I recently purchased a sweet 2004 Citabria Explorer 7GBCB, I am interested in installing larger tires from the 6's to the 8's that come standard on the High country. Will I need to order tubes as well or will the existing tubes work? Will I need spacers or shims etc.? Any advise would be appreciated.
Engineer reply to post in 2020:
ACA may or may not have a copy of the old revision 7-1307 drawing - the TCDS and parts manual may be your best source of information for the 1969 model. The current revision of 7-1307 allows for 6.00x6, 7.00x6, 8.00x6, and 8.50x6 tires (the drawing uses the aluminum axle; disk and axle spacers are required for the 8.00x6 and 8.50x6 tires).
Please provide the dick and axle spacer part numbers if able. Thank you for your consideration.
The steel gear installation drawing is 7-1307. Drawings 7-1291, 7-1404, and 4-2038 reference gear legs. 7-1291 legs have a straight taper; 7-1404 and 4-2038 are necked above the axle. The legs get progressively longer to provide propeller clearance at higher weights. A 1969 should have the 7-1291 legs; the 7-1404 legs were introduced in 1970, and 4-2038 in 2003.
ACA may or may not have a copy of the old revision 7-1307 drawing - the TCDS and parts manual may be your best source of information for the 1969 model. The current revision of 7-1307 allows for 6.00x6, 7.00x6, 8.00x6, and 8.50x6 tires (the drawing uses the aluminum axle; disk and axle spacers are required for the 8.00x6 and 8.50x6 tires).