Further to my earlier post on the rear fuselage sizing I am now finding problems with the front fuselage section.
I am currently working on the undercarriage and need to tie in the forward chassis radius rod to the fuselage. The attached images show a page copy from the DH Maintenance manual for the fuselage set-out, which was kindly provided by Low’n’Slow regarding my previous enquiry and a WIP scrap view of the undercarriage (minus the rods).
My request concerns the dimensions on the page copy which are not very clear and whilst I have obtained another copy of the manual the same issue with clarity persists.
I would be grateful if someone could advise on what these dimensions actually are.
Thanking you in advance.
By: HughT - 31st March 2025 at 11:28
It will be fun if you get your DH82A and DH82C dimensions mixed up! Make sure you know what model of aircraft your dimensions come from.
I do try to double check everything as I develop the models – cant afford to take anything for granted!
The set of drawings I am working from are the archived data set for the PT-24 model – essentially the DH82C.
By the way, I thought you had ditched the Tiger for the P-40?
I had, but that was only to fill in time while I waited for delivery of the DH82C Parts list – which incidentally was enormously useful. The P40 can only be developed so far as I am awaiting new microfilm material to arrive.
I am keen to get this Tiger Moth built, but I know full well that problems lie ahead for the main wings and centre section which I am reluctant to tackle at this stage.
By: AgCat - 31st March 2025 at 11:28
It will be fun if you get your DH82A and DH82C dimensions mixed up! Make sure you know what model of aircraft your dimensions come from.
By the way, I thought you had ditched the Tiger for the P-40?
By: HughT - 31st March 2025 at 11:22
Updated Model:
For reference; attached is the latest model for the undercarriage showing the forward radius rod arms. As you can see these items are floating with the connector brackets somewhere lost in space.
By: HughT - 31st March 2025 at 11:21
Is’nt the nearest radius rod rotated out of alignement?
John
Hi John,
Yes it is – I have constrained to a point relative to the attachment bracket at the compression cylinder. I have found that the angular degrees quoted on the DH drawings are not very accurate, whereas the dimensions seem to be quite good. I am therefore anticipating that at some stage I may have to adjust the angle of the matching faces once I have established the correct positioning for the forward connectors. Once established the orientation will change accordingly.
By constraining to a point rather than a surface I retain the necessary degrees of freedom to properly align all the structural members.
Project Update: Postponed Indefinitely..undertaking further research….thanks to everyone for their help to date.
By: John Aeroclub - 31st March 2025 at 11:21
Is’nt the nearest radius rod rotated out of alignement?
John
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February 14, 2010 at 6:03 pm