Rolls-Royce Archives
From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
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Letter to Fescol Limited regarding an estimate for Fescolising a Bentley exhaust system.19th Dec 1935Box 86 \ 3  scan0119
Letter from FESCOL LIMITED regarding nickel deposition on exhaust pipes and silencers.19th Dec 1935Box 86 \ 3  scan0120
Letter from Fescol Limited discussing a proposal and estimated pricing for electro-chemical deposition on exhaust system components.23th Dec 1935Box 86 \ 3  scan0121
Request to build parts for a Bentley exhaust system, specifying materials and processes.31th Dec 1935Box 86 \ 3  scan0122
Request for an additional Bentley exhaust downtake pipe and front expansion box for 'Fescolising'.6th Jan 1936Box 86 \ 3  scan0123
Request to fabricate an experimental Bentley exhaust manifold in sheet metal to fit car B-23-AE.6th Jan 1936Box 86 \ 3  scan0124
Advertisement for Metallisation Limited's metal spraying services.7th Jan 1936Box 86 \ 3  scan0125
Quotation for aluminising mild steel silencer casings.7th Jan 1936Box 86 \ 3  scan0126
Request to manufacture one exhaust tail pipe adapter for testing on a Bentley tail pipe.9th Jan 1936Box 86 \ 3  scan0127
Letter to Metallization Ltd. regarding the treatment of a Bentley Exhaust Manifold.9th Jan 1936Box 86 \ 3  scan0128
Letter to Messrs. Fescol Ltd. regarding Bentley exhaust parts being sent for 'Fescolising' treatment.13th Jan 1936Box 86 \ 3  scan0129
Cost comparison for a Bentley exhaust system, comparing the costs of Staybrite and Mild Steel materials.1st Jan 1948Box 86 \ 3  scan0130
Specification for a Bentley exhaust system for car 4-B-IV.16th Jan 1936Box 86 \ 3  scan0131
Request to manufacture a Bentley exhaust downtake pipe and front expansion box for anti-corrosion treatment.22th Jan 1936Box 86 \ 3  scan0132
Request to place an order with Fescol Ltd. for treating an exhaust pipe and a pipe bend.24th Jan 1936Box 86 \ 3  scan0133
Invoice from Fescol Ltd. for treating a pipe bend and a Bentley exhaust pipe, requesting an official order for payment.22th Jan 1936Box 86 \ 3  scan0134
Letter from The Light Production Co. Ltd. regarding the supply of an experimental set of 3 3/4' pistons.23th Jan 1936Box 86 \ 3  scan0135
Letter to Metallization Ltd. requesting the 'Aluminizing' of a Bentley exhaust downtake pipe and front expansion box.24th Jan 1936Box 86 \ 3  scan0136
Blueprints for Large Bore Bentley Chassis exhaust fittings and a List of Parts (L.O.P.).27th Jan 1936Box 86 \ 3  scan0137
Making exhaust system lagging covers from 24 S.W.G. nickel-plated mild steel.28th Jan 1936Box 86 \ 3  scan0138
Specification for the B-56-BN exhaust system.30th Jan 1936Box 86 \ 3  scan0139
Letter to Metallisation Ltd. regarding the 'Aluminizing' of a Bentley Manifold and pipe.31th Jan 1936Box 86 \ 3  scan0140
Letter to Fescol Ltd. regarding sending a Bentley intermediate pipe for a 'FESCOLIZING' process.3rd Feb 1936Box 86 \ 3  scan0141
Letter to Durion Ltd. requesting suggestions for chromium plating the inside of an exhaust system.4th Feb 1936Box 86 \ 3  scan0142
Comparing the design, complexity, cost, and performance of the Rolls-Royce air silencer against the Packard air silencer.4th Feb 1936Box 86 \ 3  scan0143
Letter from Durion Limited following a works visit to discuss the treatment of an exhaust downtake pipe.11th Feb 1936Box 86 \ 3  scan0144
Letter to Electro-Chemical Engineers regarding the plating of a downtake pipe and expansion box.13th Feb 1936Box 86 \ 3  scan0145
Payment for an invoice from H.H.Cooke & Sons for handmade silencer components.26th Feb 1936Box 86 \ 3  scan0146
Requesting the creation of a detail drawing and the manufacture of a modified exhaust manifold for a 4¼ Litre Bentley.27th Feb 1936Box 86 \ 3  scan0147
Reallocation of an 'Aluminized' exhaust system to car B-56-BN for testing after an accident prevented its use on car 4-B-IV.27th Feb 1936Box 86 \ 3  scan0148
Official order for a hand-made silencer shell, inner tube, and connecting pipe.28th Feb 1936Box 86 \ 3  scan0149
Invoice from Metallisation Ltd for aluminizing Bentley exhaust parts.28th Feb 1936Box 86 \ 3  scan0150
Request to place an official order with Metallisation Ltd. for aluminizing a Bentley Exhaust Manifold and Pipe.29th Feb 1936Box 86 \ 3  scan0151
Request to manufacture a 1 1/2' diameter Bentley tail pipe for testing purposes on B-23-AE.2nd Mar 1936Box 86 \ 3  scan0152
High cost of exhaust systems and strategies for reduction through material and design changes.3rd Mar 1936Box 86 \ 3  scan0153
Cost and simplification of engine silencing systems, specifically the 20/25 model and intake silencers for the Bentley chassis.5th Mar 1936Box 86 \ 3  scan0154
High cost of a Vokes Air Filter, comparing it to other models and seeking alternatives.28th Feb 1936Box 86 \ 3  scan0155
Request to produce four experimental expansion boxes for a Bentley exhaust system.4th Mar 1936Box 86 \ 3  scan0156
Letter to Lane & Girvan Ltd. regarding faulty black enamelling on Bentley exhaust manifolds.10th Mar 1936Box 86 \ 3  scan0157
Letter to Mr. Philip E. Wightman enclosing a copy of a letter sent to Messrs. Lane & Girvan Ltd.10th Mar 1936Box 86 \ 3  scan0158
Instruction to use larger 7/32' rivets instead of 5/32' for the 4 1/4 Litre Bentley inlet silencer fixing.10th Mar 1936Box 86 \ 3  scan0159
Chassis costs, specifically comparing the design and fixing of exhaust and intake silencers against those on a Packard car.20th Mar 1936Box 86 \ 3  scan0160
Page 2 of a memo comparing the cost and design of a unit against a Packard Air Silencer.20th Mar 1936Box 86 \ 3  scan0161
Analysis of exhaust system losses on the big bore Bentley engine compared to the small bore.24th Mar 1936Box 86 \ 3  scan0162
Cost reductions for the Bentley Air Silencer.30th Mar 1936Box 86 \ 3  scan0163
Letter to Burgess Products Company requesting different types of air filters for experimental purposes.1st Apr 1936Box 86 \ 3  scan0164
Letter to the General Sales Manager of The Burgess Products Co. enclosing a copy of another letter.1st Apr 1936Box 86 \ 3  scan0165
Request to place an official order for treating a Bentley Exhaust Manifold with a heat-resisting enamel process.8th May 1936Box 86 \ 3  scan0166
Letter regarding the sending of a Bentley exhaust manifold for heat-resisting enamel treatment in a gloss finish.8th May 1936Box 86 \ 3  scan0167
Specifications for an exhaust system undergoing a 15,000-mile test.22th May 1936Box 86 \ 3  scan0168
Instances of cracked exhaust manifolds on specific Bentley chassis.23th May 1936Box 86 \ 3  scan0169
Customer complaints of squeaking from the exhaust system suspension and proposing a simpler rubber mounting solution.25th May 1936Box 86 \ 3  scan0170
Failure of rubber mountings for an exhaust system due to overheating.28th May 1936Box 86 \ 3  scan0171
Issue of cracked exhaust manifolds on Bentley chassis.30th May 1936Box 86 \ 3  scan0172
Proposal for cost reduction on the Bentley exhaust system by changing from Staybright steel to aluminized mild steel.5th Jun 1936Box 86 \ 3  scan0173
Complete specification for a new Bentley exhaust system, listing materials and standards for various components.5th Jun 1936Box 86 \ 3  scan0174
Comparison photograph of three different types of engine or chassis mountings.22th Jun 1936Box 86 \ 3  scan0175
'titter' issue with a Bentley exhaust manifold and proposing a new design with an internal baffle.22th Jun 1936Box 86 \ 3  scan0176
Requesting to fit a new exhaust system with an 'Aluminized' mild steel downtake pipe to car B-56-BN.2nd Jul 1936Box 86 \ 3  scan0177
Letter to 'The Autocar' magazine requesting contact details for a company that performs the 'Webb process' for rust-proofing.7th Aug 1936Box 86 \ 3  scan0178
Letter from The Autocar magazine regarding a company that handles the Webb method of rust-proofing.8th Aug 1936Box 86 \ 3  scan0179
Inquiry to Webb Treatments Ltd. regarding their rust-proofing process, specifically for exhaust systems.11th Aug 1936Box 86 \ 3  scan0180
Letter from Webb Metal Treatments Ltd. confirming a visit from their Technical Director to Derby.12th Aug 1936Box 86 \ 3  scan0181
Letter to Webb Metal Treatments Ltd. arranging an interview with Mr. S. E. Roberts.13th Aug 1936Box 86 \ 3  scan0182
Letter to Webb Metal Treatments Ltd. regarding sending parts for anti-rust treatment.19th Aug 1936Box 86 \ 3  scan0183
Letter from Webb Metal Treatments Ltd. chasing the delivery of a Rear Silencer and Tail Pipe for treatment.26th Aug 1936Box 86 \ 3  scan0184
Letter from The Ferro Enameling Co. Ltd. regarding developments in enamel for exhaust manifolds.27th Aug 1936Box 86 \ 3  scan0185
Extract from a letter from Ferro Enamel Corporation regarding porcelain enamel for automobile manifolds.15th Aug 1936Box 86 \ 3  scan0186
Letter to The Ferro Enameling Co. Ltd. regarding the treatment of a Bentley exhaust manifold.1st Sep 1936Box 86 \ 3  scan0187
Modification to the joint on the outer shell of a Bentley Air Silencer.5th Sep 1936Box 86 \ 3  scan0188
Letter to Webb Treatments Ltd. chasing the return of silencer parts sent for anti-rust treatment.9th Sep 1936Box 86 \ 3  scan0189
Letter from Webb Metal Treatments Ltd. regarding the dispatch of silencer parts for treatment.10th Sep 1936Box 86 \ 3  scan0190
Standardisation of parts for a modified Bentley exhaust system, substituting Aluminized Mild Steel for Staybright Steel.5th Jun 1936Box 86 \ 3  scan0191
Estimated cost of extra Jigs, Tools and Equipment for the 'J' Series chassis production.9th Jul 1936Box 86 \ 3  scan0192
Requesting the fitting of a new production exhaust system to a test vehicle.16th Sep 1936Box 86 \ 3  scan0193
Letter from the Experimental Department to Ferro Enamelling Co. Ltd., inquiring about a Bentley exhaust manifold sent for enamel treatment.16th Sep 1936Box 86 \ 3  scan0194
Letter from The Ferro Enameling Co. regarding the enameling of a Bentley type manifold.19th Sep 1936Box 86 \ 3  scan0195
Letter from Webb Metal Treatments Ltd. acknowledging receipt of a missing case and discussing the welding of silencer shells.24th Sep 1936Box 86 \ 3  scan0196
Letter to Webb Metal Treatments Ltd. regarding the anti-rust treatment of silencer shells.23th Sep 1936Box 86 \ 3  scan0197
Invoice from Allen White for a complete silencer, which the stores department has no record of receiving.2nd Oct 1936Box 86 \ 3  scan0198
Requesting to book in one complete silencer in planished steel from manufacturer Allen White.5th Oct 1936Box 86 \ 3  scan0199
Letter from The Ferro Enameling Co. regarding a delay in processing manifolds due to an enamel shipment being held at Liverpool.6th Oct 1936Box 86 \ 3  scan0200
New method for joining exhaust pipes on an experimental Bentley using a stirrup-type clip.12th Nov 1936Box 86 \ 3  scan0201
New designs for chromium-plated exhaust tail pipes for all car models.19th Nov 1936Box 86 \ 3  scan0202
Request to ascertain the cost and delivery of additional nickel plating equipment.26th Nov 1936Box 86 \ 3  scan0203
Failed clip on a downtake pipe, its potential modification, and testing of a similar system.5th Mar 1937Box 86 \ 3  scan0204
Fault with an exhaust system clip slipping off the lagging and a proposed solution.8th Mar 1937Box 86 \ 3  scan0205
The failure of an exhaust system flange after 4,700 miles.11th Apr 1937Box 86 \ 3  scan0206
Proposed new exhaust suspension system for a Bentley model.17th Jun 1937Box 86 \ 3  scan0207
Cover note for a sketch of Wraith II rubber strips adapted for a 4 1/4 Bentley exhaust system.30th Jun 1937Box 86 \ 3  scan0208
Instruction to build and fit an exhaust system suspension to a Bentley 6-B-IV car for a 10,000-mile test in France.30th Jun 1937Box 86 \ 3  scan0209
Work order to manufacture and fit a new front exhaust expansion box for car 5-B-IV.1st Jul 1937Box 86 \ 3  scan0210
Extracts from memos on the design of exhaust systems for the 25 HP and Phantom III models.15th Oct 1937Box 86 \ 3  scan0211
Modifications to the exhaust system to resolve an exhaust drone and questioning the sizing of the front expansion box.15th Oct 1937Box 86 \ 3  scan0212
Issues with exhaust system suspension, suggesting the use of rubber suspension to mitigate rattles and squeaks.10th Jun 1936Box 86 \ 3  scan0213
Exhaust systems for in-line six-cylinder engines, comparing single and separate systems.9th Apr 1938Box 86 \ 3  scan0214
Report outlining the objectives for a series of tests on exhaust manifold and silencer combinations for a B.2J unit.13th Apr 1938Box 86 \ 3  scan0215
Comparison of engine performance between 3 and 4 port manifolds with single and double outlets.13th Apr 1938Box 86 \ 3  scan0216
Performance comparison graph and analysis of 3-port and 4-port exhaust manifolds with and without silencers.13th Apr 1938Box 86 \ 3  scan0217
Blueprint graph comparing engine performance with different exhaust manifold and silencer setups.13th Apr 1938Box 86 \ 3  scan0218


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