| Description | Date | Identifier | |
| Request to manufacture five Hydraulic Locking Devices for shock dampers. | 12th Mar 1934 | Box 151 \ 2 scan0210 | |
| Letter to The Packless Gland Co. regarding revised inspection limits for bellows dimensions. | 12th Mar 1934 | Box 151 \ 2 scan0211 | |
| The return of six blueprints for new shock absorbers. | 12th Mar 1934 | Box 151 \ 2 scan0212 | |
| Requesting to increase the bolt diameter for the 20/25 model's rear damper mounting. | 12th Mar 1934 | Box 151 \ 2 scan0213 | |
| Production difficulties and revised dimensional limits for Shock Damper Bellows F.85395. | 13th Mar 1934 | Box 151 \ 2 scan0214 | |
| Thanking for returned shock damper system prints and requesting spare drawings. | 14th Mar 1934 | Box 151 \ 2 scan0215 | |
| Proposed modification to the rear shock damper mounting for the 20/25 model. | 14th Mar 1934 | Box 151 \ 2 scan0216 | |
| Letter from The Packless Gland Co. regarding an order for Bellows and Shaft Seals, discussing allowable movement and potential failures. | 14th Mar 1933 | Box 151 \ 2 scan0217 | |
| Letter from The Packless Gland Co. Ltd. discussing the lifespan and movement frequency of bellows. | 15th Mar 1934 | Box 151 \ 2 scan0218 | |
| Request for the manufacture of 6 shock damper bushes to drawing or specification Hs.1336. | 15th Mar 1934 | Box 151 \ 2 scan0219 | |
| Modification to the spring for the Damper Control Release Valve. | 16th Mar 1934 | Box 151 \ 2 scan0220 | |
| Part replacements for the governor control to dampers on the Phantom II & 20/25 HP chassis. | 23th Mar 1934 | Box 151 \ 2 scan0221 | |
| Issues and solutions for loss of load on the 40/50 Controllable Dampers for the 28-EX car. | 26th Mar 1934 | Box 151 \ 2 scan0222 | |
| Letter from The Packless Gland Co. Ltd. regarding bellows assemblies, quotes for shock absorber units, and technical pressure specifications. | 4th Apr 1933 | Box 151 \ 2 scan0223 | |
| Letter from The Packless Gland Co. Ltd. regarding a pressure test on a unit. | 6th Apr 1934 | Box 151 \ 2 scan0224 | |
| Letter to The Packless Gland Co. discussing issues with sticking bellows and proposing new interchangeable designs with specific compression requirements. | 6th Apr 1934 | Box 151 \ 2 scan0225 | |
| Letter requesting consideration of a scheme to produce bellows with a specific length limit. | 6th Apr 1934 | Box 151 \ 2 scan0226 | |
| Letter from The Packless Gland Co. Ltd. acknowledging correspondence and advising of a delay in response. | 9th Apr 1934 | Box 151 \ 2 scan0227 | |
| Letter reporting the results of pressure tests conducted on Thermoflex bellows. | 19th Apr 1933 | Box 151 \ 2 scan0228 | |
| Letter from The Packless Gland Co. Ltd. detailing the test results of a bellows unit. | 23th Apr 1934 | Box 151 \ 2 scan0229 | |
| Letter from The Packless Gland Co. Ltd. discussing a scheme for bellows, recommending an internal stop to limit compression. | 23th Apr 1934 | Box 151 \ 2 scan0230 | |
| Letter from The Packless Gland Co. Ltd. proposing an internal stop for a bellows joint and requesting a drawing to create samples. | 24th Apr 1934 | Box 151 \ 2 scan0231 | |
| Letter of complaint to The Super Oil Seal Manfg. Co. regarding the poor performance of their Gland Seals during testing. | 24th Apr 1934 | Box 151 \ 2 scan0232 | |
| Modifications to dampers and bellows, including changes in length, clearance, and suitability for different models. | 27th Apr 1934 | Box 151 \ 2 scan0233 | |
| Recommendation on heavier damper loads for use in Belgium and the resulting hard ride. | 30th Apr 1934 | Box 151 \ 2 scan0234 | |
| Letter to The Packless Gland Co. Ltd. discussing alternative schemes for fitting a stop for bellows. | 2nd May 1934 | Box 151 \ 2 scan0235 | |
| Letter from The Packless Gland Co, Ltd. discussing adjustments for bellows assemblies based on drawing N.Sch.4034. | 4th May 1934 | Box 151 \ 2 scan0236 | |
| Letter to L.A. Leslie asking for a sketch with dimensions for bellows end pieces. | 5th May 1934 | Box 151 \ 2 scan0237 | |
| Unsatisfactory testing procedures for controllable shock dampers and their control systems. | 5th May 1934 | Box 151 \ 2 scan0238 | |
| Importance and necessity of rigorous testing procedures for controllable dampers ahead of increased production. | 5th May 1934 | Box 151 \ 2 scan0239 | |
| The weight of a Shock Damper Governor Unit, both empty and full of oil. | 5th May 1934 | Box 151 \ 2 scan0240 | |
| Test data sheet for bellows part number F.85395, showing free, compressed, and return lengths. | 5th May 1934 | Box 151 \ 2 scan0241 | |
| Data table showing the free length, compressed length, and return length of components. | 5th May 1934 | Box 151 \ 2 scan0242 | |
| Data table showing measurements for free length, compressed length, and return length of a component. | 29th May 1934 | Box 151 \ 2 scan0243 | |
| Failure of a strengthened intermediate lever (F.86039) and a request for a redesigned version. | 29th May 1934 | Box 151 \ 2 scan0244 | |
| Suggestion to modify the air chamber plug on the Damper Governor unit to prevent misuse. | 6th Jun 1934 | Box 151 \ 2 scan0245 | |
| Suggesting modifications to the air chamber plug on a Damper Governor Unit to avoid it being mistaken for a filling plug. | 6th Jun 1934 | Box 151 \ 2 scan0246 | |
| Internal request to order 24 Shock Damper Valve Springs with part number F.86005. | 8th Jun 1934 | Box 151 \ 2 scan0247 | |
| Proposed anti-rolling device for the Phantom model. | 3rd Jun 1934 | Box 151 \ 2 scan0248 | |
| Design and manufacture of damper control bellows. | 15th Jun 1934 | Box 151 \ 2 scan0249 | |
| Cover note attaching a report on work done on shock absorber valve noise. | 19th Jun 1934 | Box 151 \ 2 scan0250 | |
| Valve noise tests for a single valve type damper, detailing efforts to eliminate a 'squawk'. | 19th Jun 1934 | Box 151 \ 2 scan0251 | |
| Various unsuccessful attempts to hydraulically quieten a noisy valve experiencing a 'squawk'. | 19th Jun 1934 | Box 151 \ 2 scan0252 | |
| Series of experiments modifying valve and damper components to resolve a 'squawk'. | 19th Jun 1934 | Box 151 \ 2 scan0253 | |
| Experiments using different diameter pipes to investigate and eliminate a 'squawk' noise from a valve damper. | 19th Jun 1934 | Box 151 \ 2 scan0254 | |
| Experiments involving adding and removing restrictions to balance L.P. and HP sides. | 19th Jun 1934 | Box 151 \ 2 scan0255 | |
| Blueprint showing schematics for valve noise tests on single valve dampers. | 19th Jun 1934 | Box 151 \ 2 scan0256 | |
| Diagrams for valve noise tests and single valve dampers. | 19th Jun 1934 | Box 151 \ 2 scan0257 | |
| Request to build a set of 4 valves and valve chambers for shock dampers, incorporating a modification to make the low pressure load 75% of the high pressure load. | 18th Jul 1934 | Box 151 \ 2 scan0258 | |
| Arrangements to demonstrate the method of changing over shock dampers at a coachbuilder's. | 18th Jul 1934 | Box 151 \ 2 scan0259 | |
| Design change to the main oil release hole on shock damper governor units. | 19th Jul 1934 | Box 151 \ 2 scan0260 | |
| Return of shock dampers and clarifying the number of modified trials cars and chassis. | 25th Jul 1934 | Box 151 \ 2 scan0261 | |
| Implementing a filter for the Damper Control Unit pump on various car models. | 25th Jul 1934 | Box 151 \ 2 scan0262 | |
| Tests to overcome an oil leak from the Shock Damper Governor unit. | 27th Jul 1934 | Box 151 \ 2 scan0263 | |
| Alterations and issues with governor units, including oil leaks and the need for a filter. | 27th Jul 1934 | Box 151 \ 2 scan0264 | |
| Requesting the fitment of an oil cleaner to shock damper governor units to address ongoing issues with dirt. | 2nd Aug 1934 | Box 151 \ 2 scan0265 | |
| Need for a filter on the shock damper governor unit to prevent issues with dirt. | 2nd Aug 1934 | Box 151 \ 2 scan0266 | |
| Request for a brief summary on the RIDE CONTROL for a publicity article. | 3rd Aug 1934 | Box 151 \ 2 scan0267 | |
| Complaining about terrible wing and lamp movement on trial car 9 B 130 AH. | 7th Aug 1934 | Box 151 \ 2 scan0268 | |
| Brief description of the ride control and the shock absorber loading system. | 7th Aug 1934 | Box 151 \ 2 scan0269 | |
| Description of the R.R. Controllable Shock Damper system, detailing its automatic and manual adjustment capabilities. | 3rd Mar 1934 | Box 151 \ 2 scan0270 | |
| The scheme of controllable shock dampers. | 5th Mar 1934 | Box 151 \ 2 scan0271 | |
| Description of how oil pressure in a control system varies the load on dampers via a metal bellows. | 5th Mar 1934 | Box 151 \ 2 scan0272 | |
| Shock absorber tests conducted at Brooklands comparing different damper types. | 9th Aug 1934 | Box 151 \ 2 scan0273 | |
| Acknowledgement of correspondence from Paris to Derby regarding 'Ride Control'. | 13th Aug 1934 | Box 151 \ 2 scan0274 | |
| Letter from the Royal Arsenal inquiring about automobile suspension damping devices. | 20th Aug 1934 | Box 151 \ 2 scan0275 | |
| Letter responding to a query about the general arrangement of hydraulic shock absorbers. | 29th Aug 1934 | Box 151 \ 2 scan0276 | |
| Letter from the Royal Arsenal acknowledging receipt of information and drawings. | 31th Aug 1934 | Box 151 \ 2 scan0277 | |
| Modifications to a Damper Control Pump to make it less susceptible to foreign matter. | 30th Oct 1934 | Box 151 \ 2 scan0278 | |
| Letter from The Packless Gland Co. Ltd. concerning the inspection and packing of Shock Damper Bellows units. | 3rd Nov 1934 | Box 151 \ 2 scan0279 | |
| Letter concerning the delivery and storage of units in special boxes for Shock Dampers. | 3rd Nov 1934 | Box 151 \ 2 scan0280 | |
| Letter to The Packless Gland Co. Ltd. regarding the design and adjustment of bellows for shock dampers. | 5th Nov 1934 | Box 151 \ 2 scan0281 | |
| Letter discussing modifications to the design and production of bellows to improve accuracy and reduce rejects. | 5th Nov 1934 | Box 151 \ 2 scan0282 | |
| Letter confirming the despatch of Shock Damper Valves, part number 85875, in new packaging. | 7th Nov 1934 | Box 151 \ 2 scan0283 | |
| Letter to The Packless Gland Co. Ltd. regarding a consignment of Bellows and satisfaction with the new boxes. | 8th Nov 1934 | Box 151 \ 2 scan0284 | |
| Letter from The Packless Gland Co. Ltd. concerning the satisfactory packing of bellows units to avoid future rejects. | 9th Nov 1934 | Box 151 \ 2 scan0285 | |
| Complaints and faults found with shock dampers, highlighting the need for greater care in production. | 22th Nov 1934 | Box 151 \ 2 scan0286 | |
| Manufacturing suggestions for N.Sch.4231 and comments on the modified shock damper Hs.1584. | 29th Nov 1934 | Box 151 \ 2 scan0287 | |
| Note confirming the superiority of modified Clock Dampers (Hs 1584) and authorising to proceed as drawn. | 17th Jan 1935 | Box 151 \ 2 scan0288 | |
| Request to manufacture and modify parts to test Delco inertia type shock dampers. | 17th Jan 1935 | Box 151 \ 2 scan0289 | |
| Preliminary tests of automatic lock shock dampers designed to relieve discomfort over hump-backed bridges. | 26th Mar 1935 | Box 151 \ 2 scan0290 | |
| Return of a De Ram shock absorber and the purchase of another for endurance testing. | 29th Apr 1935 | Box 151 \ 2 scan0291 | |
| Testing of Auto-Lock Shock Dampers and the urgent need for parts for a specially designed indicator. | 1st May 1935 | Box 151 \ 2 scan0292 | |
| Modification to the governor control dampers to improve performance during severe braking. | 13th Jun 1935 | Box 151 \ 2 scan0293 | |
| Request to design a braking inertia control unit to resolve issues with damper loads on Bentley cars for different markets. | 13th Jun 1936 | Box 151 \ 2 scan0294 | |
| Letter to The Packless Gland Co. Ltd. requesting updated lists of bellows sizes. | 24th Jun 1935 | Box 151 \ 2 scan0295 | |
| Complaints of shock damper knocks, identifying slack bushes as the cause and requesting a return to original tightness. | 11th May 1936 | Box 151 \ 2 scan0296 | |
| Action programme and findings regarding shock damper knocks. | 17th Aug 1936 | Box 151 \ 2 scan0297 | |
| The suitability of an American construction method for roll rod and shock damper levers and links. | 5th Oct 1936 | Box 151 \ 2 scan0298 | |
| Analysis of soft levers, connecting links, and roll rod designs for various car models. | 5th Oct 1936 | Box 151 \ 2 scan0299 | |
| The performance of Munro links and silent-bloc bushes for the roll rod. | 5th Oct 1936 | Box 151 \ 2 scan0300 | |
| Test report on the Bentley Roll Rod Lever. | 25th Aug 1936 | Box 151 \ 2 scan0301 | |
| Serration shearing test report for a Bentley roll rod lever. | 21th Aug 1939 | Box 151 \ 2 scan0302 | |
| Graph and diagram detailing the results of a Bentley Roll Rod Lever serration shearing test. | 21th Aug 1936 | Box 151 \ 2 scan0303 | |
| Test report on a shock damper connecting tube with American type rubber control pin bushes. | 3rd Sep 1936 | Box 151 \ 2 scan0304 | |
| Torsional rating test and hysteresis curve for an American type shock damper connecting tube's rubber control pin bushes. | 26th Aug 1936 | Box 151 \ 2 scan0305 | |
| Rating test graph showing deflection versus load for American type rubber control pin bushes. | 25th Aug 1936 | Box 151 \ 2 scan0306 | |
| Graph plotting load versus rebound to show tyre and spring deflections with and without a roll rod. | 9th Jun 1936 | Box 151 \ 2 scan0307 | |
| Hardness test results for a 'Delco' double lever type damper shaft and inter-lever. | 9th Jun 1936 | Box 151 \ 2 scan0308 | |
| Graph comparing Torque in LB/INS against Deflection in Degrees for various link and roll rod components. | 9th Oct 1936 | Box 151 \ 2 scan0309 | |
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