| Description | Date | Identifier | |
| Proposal for the semi-isolation of the scuttle and instrument board on the 20 HP model. | 26th Aug 1926 | Box 53 \ 4 Scan149 | |
| Problems with scuttle isolation on the 20 HP model and proposing solutions. | 14th Aug 1926 | Box 53 \ 4 Scan150 | |
| Design and implementation of a self-supporting steering column for the 20 HP Chassis. | 23th Aug 1926 | Box 53 \ 4 Scan151 | |
| 20 HP scuttle isolation, discussing a proposed change to the steering column support. | 1st Aug 1926 | Box 53 \ 4 Scan152 | |
| Scuttle isolation methods for the 20 HP model, comparing schemes from various coachbuilders. | 6th Oct 1926 | Box 53 \ 4 Scan153 | |
| Internal communication regarding a chassis and coachwork design issue and its standardisation. | 26th Oct 1926 | Box 53 \ 4 Scan154 | |
| Production of stays and a new steering column design for scuttle isolation on the 20 HP model. | 28th Oct 1926 | Box 53 \ 4 Scan155 | |
| The failure of the total isolation scheme for the 20 HP chassis. | 27th May 1927 | Box 53 \ 4 Scan156 | |
| The C.S.C. should take over the question of adopting total or semi scuttle isolation for the 20HP model. | 30th May 1927 | Box 53 \ 4 Scan157 | |
| Coachbuilder complaints regarding the 'total isolation' scheme and considering a reversion to 'semi-isolation' for the instrument board and steering column. | 20th Jun 1927 | Box 53 \ 4 Scan158 | |
| Reversion to semi-isolation for 20 HP chassis and further discussion on 40/50 HP chassis. | 17th Jun 1927 | Box 53 \ 4 Scan159 | |
| Complaint about a shivering scuttle on vehicle 10-G3 and the proposed fitting of a damper. | 24th Sep 1927 | Box 53 \ 4 Scan160 | |
| Use of a friction damper for scuttle isolation on a Twenty Saloon car. | 2nd Oct 1927 | Box 53 \ 4 Scan161 | |
| Fitting of a 'Scuttle Isolation Damper' to an Open Trials car for testing. | 26th Oct 1927 | Box 53 \ 4 Scan162 | |
| The colour scheme, fitting of a friction damper, and pre-delivery inspection of a car for Le Canadel. | 27th Oct 1927 | Box 53 \ 4 Scan163 | |
| Proposal to add a second dashboard to improve isolation from noise and to reduce under-bonnet temperature. | 18th Jan 1928 | Box 53 \ 4 Scan164 | |
| Body clearance, door design, and steering column attachment to prevent noise and heat transfer. | 17th Jan 1928 | Box 53 \ 4 Scan165 | |
| Personal letter discussing suggested modifications for the Australian market based on a report from a mission to Australia. | 17th Jan 1928 | Box 53 \ 4 Scan166 | |
| Page discussing car body design, engine requirements, and strongly recommending British manufacturers adopt a 6-volt electrical system over a 12-volt system for better compatibility. | 7th Mar 1928 | Box 53 \ 4 Scan167 | |
| On scuttle isolation, detailing the practice of bolting the scuttle to the dash to reduce knocks. | 7th Mar 1928 | Box 53 \ 4 Scan168 | |
| Disadvantages of a suggested design, specifically regarding weight, space, and the problems of 'total isolation' in car bodies. | 7th Mar 1928 | Box 53 \ 4 Scan169 | |
| With a sketch discussing reported cracks in the body of the 15-EX car and exploring potential strengthening solutions. | 8th Mar 1928 | Box 53 \ 4 Scan170 | |
| Instruction to demonstrate the purpose of the large stay from the steering box to the dash by removing it for a day. | 9th Mar 1928 | Box 53 \ 4 Scan171 | |
| Issues of scuttle jellying and bonnet rattles, comparing total and semi-isolation methods. | 2nd Mar 1928 | Box 53 \ 4 Scan172 | |
| Use of semi-isolation versus total isolation for engine mounting and its effect on vibration. | 26th Mar 1928 | Box 53 \ 4 Scan173 | |
| Semi-isolation of the scuttle for the Phantom model and comparing alternative schemes. | 26th Mar 1928 | Box 53 \ 4 Scan174 | |
| Scheme for the semi-isolation of the steering column to avoid squeaks and improve rigidity. | 27th Mar 1928 | Box 53 \ 4 Scan175 | |
| Blueprint detailing a semi-isolation bolt assembly using rubber bushes and washers. | 27th Mar 1928 | Box 53 \ 4 Scan176 | |
| Use and testing of friction dampers to address scuttle and dashboard vibration issues on various car models. | 27th Mar 1928 | Box 53 \ 4 Scan177 | |
| Design considerations and alternatives for Phantom scuttle isolation. | 20th Apr 1928 | Box 53 \ 4 Scan178 | |
| The status of 50 car bodies to be built with semi-isolation and questioning the total isolation scheme. | 4th Jun 1928 | Box 53 \ 4 Scan179 | |
| Standardisation of semi-isolated bodies for 20 HP and 40/50 HP models. | 6th Jun 1928 | Box 53 \ 4 Scan180 | |
| The semi-isolation of the scuttle on a Phantom chassis, referencing blueprint LF.1032 and the number of bolts required. | 9th Jun 1928 | Box 53 \ 4 Scan181 | |
| Decision on the semi-isolation of the scuttle for 20 HP and 40/50 HP chassis. | 12th Jun 1928 | Box 53 \ 4 Scan182 | |
| Proposed semi-isolation scheme for a Phantom scuttle and outlining objections to it. | 13th Jun 1928 | Box 53 \ 4 Scan183 | |
| Proposed isolation scheme, the scuttle damper, and the demise of the Sports Car. | 13th Jun 1928 | Box 53 \ 4 Scan184 | |
| Benefits of semi-isolation for the scuttle, referencing experimental tests and customer feedback. | 15th Jun 1928 | Box 53 \ 4 Scan185 | |
| Summary of experimental findings on the 14-EX scuttle damper, semi-isolation, and the impracticality of total isolation. | 21th Jun 1928 | Box 53 \ 4 Scan186 | |
| Support of the steering column with a cast dash. | 21th Jun 1928 | Box 53 \ 4 Scan187 | |
| Request to make a set of semi-isolation parts for the 12-EX car and hand them to GWH. | 11th Jul 1928 | Box 53 \ 4 Scan188 | |
| Proposing design changes for the Phantom G.2.B series scuttle isolation. | 19th Jul 1928 | Box 53 \ 4 Scan189 | |
| Modifications for the scuttle isolation on the 12-G-4 India 3 chassis, involving a blueprint and the use of sponge rubber. | 20th Jul 1928 | Box 53 \ 4 Scan190 | |
| The scuttle isolation for the 'India 3' model, discussing a drawing and a required reduction in the dashboard recess. | 21th Jul 1928 | Box 53 \ 4 Scan191 | |
| Proposing alterations to cast type dash patterns and scuttle isolation for India and 40/50 HP chassis models. | 23th Jul 1928 | Box 53 \ 4 Scan192 | |
| Viability of a proposed Scuttle & Dash Isolation scheme and blueprint for coachbuilders. | 3rd Aug 1928 | Box 53 \ 4 Scan193 | |
| Letter discussing two different designs for scuttle and dash isolation on Phantom and 20-HP chassis. | 2nd Aug 1928 | Box 53 \ 4 Scan194 | |
| Covering memo sending copies of other referenced documents. | 13th Aug 1928 | Box 53 \ 4 Scan195 | |
| Proposed Scuttle & Dash Isolation scheme and its associated technical challenges. | 1st Aug 1928 | Box 53 \ 4 Scan196 | |
| Recommendations for scuttle and dash isolation designs for different coachbuilders and chassis models. | 8th Aug 1928 | Box 53 \ 4 Scan197 | |
| To fit semi-isolation to car 16-EX. | 8th Aug 1928 | Box 53 \ 4 Scan198 | |
| Finishing a scuttle with cellulose paint and options for modifying the scuttle rail on a flexible Weymann body. | 20th Aug 1928 | Box 53 \ 4 Scan199 | |
| Modifications to the scuttle armature and removing the rib water collector for semi-isolation bolts. | 1st Aug 1928 | Box 53 \ 4 Scan200 | |
| Design modification for adding inserts to a scuttle armature assembly. | 23th Aug 1928 | Box 53 \ 4 Scan201 | |
| Standardisation document for a semi-isolation of scuttle scheme to prevent scuttle jellying and reduce column vibration. | 23th Mar 1928 | Box 53 \ 4 Scan202 | |
| Record of agreement and remarks on the standardisation of coachwork features. | 4th May 1928 | Box 53 \ 4 Scan203 | |
| On the standardisation of semi-isolation to prevent scuttle jellying and to support the steering column. | 3rd Jan 1929 | Box 53 \ 4 Scan204 | |
| Semi-isolation scheme for scuttles and the distribution of related blueprints. | 7th Jan 1929 | Box 53 \ 4 Scan205 | |
| The delayed adoption of semi-isolation for the scuttle to address customer complaints of 'jellying'. | 9th Jan 1929 | Box 53 \ 4 Scan206 | |
| Semi-isolation scheme for the scuttle to address a 'jellying' issue on certain car chassis. | 10th Jan 1929 | Box 53 \ 4 Scan207 | |
| Brief report on the initial implementation of 'Semi-isolation' on 40/50 HP and 20 HP chassis. | 16th Jan 1929 | Box 53 \ 4 Scan208 | |
| Modifications for the Phantom model's scuttle isolation, addressing issues with rubber plugs and clearances. | 18th Feb 1929 | Box 53 \ 4 Scan209 | |
| Semi-isolation of the scuttle on a 40/50 HP chassis. | 18th Feb 1929 | Box 53 \ 4 Scan210 | |
| Design issues with print F.79578 concerning the semi-isolation of the scuttle from the dashboard on a 40/50 HP chassis. | 13th Feb 1929 | Box 53 \ 4 Scan211 | |
| Alterations to a drawing for the Phantom scuttle isolation, noting a serious change to the dash. | 1st Mar 1929 | Box 53 \ 4 Scan212 | |
| Clarifying the semi-isolation scheme for chassis 32-OR Heath, for Crosbie & Dunn. | 17th Jun 1929 | Box 53 \ 4 Scan213 | |
| Revised subframe with a wider dash for the 20HPt scuttle isolation, model 14-G4. | 11th Jul 1929 | Box 53 \ 4 Scan214 | |
| Recommending the use of a harder rubber for semi isolation bushes and washers. | 6th Feb 1930 | Box 53 \ 4 Scan215 | |
| The sourcing of rubber bushes for semi-isolation between the dash and scuttle. | 10th Mar 1930 | Box 53 \ 4 Scan216 | |
| Comparison of drawing dimensions versus actual dimensions for rubber bushes used for semi-isolation between the dash and scuttle. | 11th Mar 1930 | Box 53 \ 4 Scan217 | |
| Scuttle isolation for a 34.5 inch wide dash on a 20/25 HP model, specifically for a Park Ward Limousine. | 26th Apr 1930 | Box 53 \ 4 Scan218 | |
| Modifications to the scuttle and dashboard subframe for a Phantom II experimental car. | 28th Apr 1930 | Box 53 \ 4 Scan219 | |
| Adjustments to the L.H. Bonnet isolation gap on a P.2. model. | 14th May 1930 | Box 53 \ 4 Scan220 | |
| Body mounting, subframe use, scuttle isolation, and recommendations for front and rear aprons. | 24th May 1930 | Box 53 \ 4 Scan221 | |
| Using rubber mounts for the subframe and extending the exhaust pipe to improve smoothness and reduce fumes. | 24th May 1930 | Box 53 \ 4 Scan222 | |
| Various recommendations for an improved scuttle isolation system and coordinating with coachbuilders. | 19th Aug 1930 | Box 53 \ 4 Scan223 | |
| Extract from a report on tests of completed cars, discussing scuttle isolation schemes. | 26th Jun 1930 | Box 53 \ 4 Scan224 | |
| Unsatisfactory quality and failure of new hard rubber samples for dashboard isolation. | 30th Jun 1930 | Box 53 \ 4 Scan225 | |
| The quality, hardness, and failure of dashboard isolation rubbers and bushes. | 1st Jul 1930 | Box 53 \ 4 Scan226 | |
| Issues with hard dashboard isolation rubbers for the Phantom II & 20/25HP Chassis. | 9th Jul 1930 | Box 53 \ 4 Scan227 | |
| Stock levels and requirements for Dashboard Isolation Rubbers for the Phantom II & 20/25HP Chassis. | 9th Jul 1930 | Box 53 \ 4 Scan228 | |
| Arrangements for the supply of dashboard isolation rubbers and obtaining samples from approved suppliers. | 10th Jul 1930 | Box 53 \ 4 Scan229 | |
| Instructions for installing rubber buffers for scuttle isolation on the dashboard. | 15th Jul 1930 | Box 53 \ 4 Scan230 | |
| Requesting an expedited supply of dashboard isolation rubbers for Phantom II & 20/25HP chassis. | 17th Jul 1930 | Box 53 \ 4 Scan231 | |
| The hardness of scuttle isolation rubbers, requesting a complete set for testing. | 18th Jul 1930 | Box 53 \ 4 Scan232 | |
| Request to expedite supplies of hard type dashboard isolation rubbers for Phantom 11 & 20/25 HP chassis. | 23th Jul 1930 | Box 53 \ 4 Scan233 | |
| Stock shortage of rubbers for dashboard isolation and requesting authority to despatch chassis without them. | 5th Aug 1930 | Box 53 \ 4 Scan234 | |
| Dashboard isolation, authorizing the delivery of a chassis without washers, which are to be sent later. | 6th Aug 1930 | Box 53 \ 4 Scan235 | |
| The quality testing of Dunlop scuttle isolation rubbers, finding them variable and recommending Avon rubbers as a preferred replacement. | 1st Aug 1930 | Box 53 \ 4 Scan236 | |
| Quality control test procedures and limits for scuttle isolation rubbers. | 14th Aug 1930 | Box 53 \ 4 Scan237 | |
| Supply and inspection of rubbers for the Phantom II & 20/25HP chassis dashboard isolation scheme. | 19th Aug 1930 | Box 53 \ 4 Scan238 | |
| Quality and replacement of dashboard isolation rubbers. | 23th Aug 1930 | Box 53 \ 4 Scan239 | |
| Print F.82854 and scuttle isolation schemes for the N. 2 series, specifically regarding clearance measurements. | 7th Nov 1930 | Box 53 \ 4 Scan240 | |
| Scuttle isolation and bonnet clearance for the Phantom II model. | 11th Nov 1930 | Box 53 \ 4 Scan241 | |
| Design modifications for the scuttle isolation on the P. 2. N. Series and 25HP models. | 20th Nov 1930 | Box 53 \ 4 Scan242 | |
| Modifications to the Phantom II Scuttle Isolation drawing. | 24th Nov 1930 | Box 53 \ 4 Scan243 | |
| Blueprint for the scuttle and dash semi-isolation for a Phantom II model. | 22th Nov 1938 | Box 53 \ 4 Scan244 | |
| Compression of rubber components for scuttle isolation. | 25th Nov 1930 | Box 53 \ 4 Scan245 | |
| Controversy over fitting extra side rubbers to 25 HP cars and requesting further testing. | 22th Dec 1930 | Box 53 \ 4 Scan246 | |
| Scuttle isolation drawings and rubber components for various car models. | 12th Nov 1930 | Box 53 \ 4 Scan247 | |
| Testing and reporting on four buffers for the Phantom II Scuttle Isolation. | 12th Jan 1931 | Box 53 \ 4 Scan248 | |
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