| Description | Date | Identifier | |
| Log sheet detailing the results and failures during a bumper test on vehicle springs and shock absorbers. | 30th Aug 1920 | Box 119 \ 2 scan0125 | |
| Log sheet detailing component failures, repairs, and total run times over several days in August 1920. | 26th Aug 1920 | Box 119 \ 2 scan0126 | |
| Log detailing the total running hours of fittings on a bumper chassis. | 12th Jan 1921 | Box 119 \ 2 scan0127 | |
| Front bumper spring test report detailing Brinell hardness and run time. | 4th Oct 1920 | Box 119 \ 2 scan0128 | |
| Front bumper spring test report detailing specifications and results after a durability test. | 21th Sep 1920 | Box 119 \ 2 scan0129 | |
| Bumper test report for a front chassis spring, detailing Brinell hardness and test results for each leaf. | 14th Oct 1920 | Box 119 \ 2 scan0130 | |
| Results of a bump test on new bronze engine feet for the 40/50 chassis. | 27th Sep 1920 | Box 119 \ 2 scan0131 | |
| Test report detailing the results of bumper spring tests on a front chassis. | 14th Oct 1920 | Box 119 \ 2 scan0132 | |
| Bumper test report on a 10-leaf spring (F.5629), detailing Brinell hardness and failures after a timed run. | 16th Oct 1920 | Box 119 \ 2 scan0133 | |
| Log from a bump test performed on a front chassis, detailing observations and component failures over time. | 2nd Oct 1920 | Box 119 \ 2 scan0134 | |
| Test report on a front bumper, new engine rear suspension brackets, and Dunlop wire wheels with 72 spokes. | 20th Oct 1920 | Box 119 \ 2 scan0135 | |
| Log sheet detailing the results of a bumper test, including component failures over time. | 23th Nov 1920 | Box 119 \ 2 scan0136 | |
| Bumper test results for 11 leaves detailing their Brinell hardness and condition after a timed run. | 26th Nov 1920 | Box 119 \ 2 scan0137 | |
| Bumper test report for an 11-leaf spring, showing Brinell hardness and failure results. | 23th Dec 1920 | Box 119 \ 2 scan0138 | |
| Log detailing the total running hours of various fittings on a Bumper Chassis. | 12th Jan 1921 | Box 119 \ 2 scan0139 | |
| The results of a bumper test on a Goshawk 11 chassis, noting spring and steering lever failures. | 26th Oct 1921 | Box 119 \ 2 scan0140 | |
| Bumper test for the Goshawk 11 chassis, detailing failures of front springs and steering levers. | 28th Oct 1921 | Box 119 \ 2 scan0141 | |
| Results of a bumper test on the Goshawk 11 chassis. | 28th Oct 1921 | Box 119 \ 2 scan0142 | |
| The Goshawk 11 chassis bump test, detailing failures of the rear spring and a front support bracket after 48 hours. | 1st Nov 1921 | Box 119 \ 2 scan0143 | |
| Modification to the Goshawk 11 front cross member after a bump test failure. | 6th Nov 1921 | Box 119 \ 2 scan0144 | |
| Request to order 12 spare top leaves for the Goshawk due to breakages. | 16th Nov 1921 | Box 119 \ 2 scan0145 | |
| Broken rear spring bracket being sent to Mr. Royce for examination. | 16th Nov 1921 | Box 119 \ 2 scan0146 | |
| Bump test for the Goshawk 11, detailing bracket and rear spring failures. | 17th Nov 1921 | Box 119 \ 2 scan0147 | |
| Goshawk 11 bump test, reporting a fractured front axle and the need for urgent modifications. | 26th Nov 1921 | Box 119 \ 2 scan0148 | |
| Failed bump test for the Goshawk 11 chassis, detailing a recurring frame fracture at the dumb iron. | 1st Dec 1921 | Box 119 \ 2 scan0149 | |
| The results of a bump test on a Goshawk 11 chassis frame. | 1st Dec 1921 | Box 119 \ 2 scan0150 | |
| Cracked radiator fixing gusset plate found after a Goshawk 11 chassis bump test. | 7th Dec 1921 | Box 119 \ 2 scan0151 | |
| Broken frame on a Goshawk 11 chassis after a bump test, with recommendations to improve material quality and thickness. | 12th Dec 1921 | Box 119 \ 2 scan0152 | |
| Intentional flexibility and consistent breakages of the Goshawk II radiator fixing following a bumping test. | 12th Dec 1921 | Box 119 \ 2 scan0153 | |
| Instructions and record of a 'Goshawk II' front bumping test, detailing parts fitted and breakages over time. | 14th Dec 1921 | Box 119 \ 2 scan0154 | |
| Instruction sheet detailing parts required due to breakage for a customer's vehicle. | 14th Dec 1921 | Box 119 \ 2 scan0155 | |
| The bump test failures of the Goshawk 11, with a comparison to the 40/50 HP chassis. | 15th Dec 1921 | Box 119 \ 2 scan0156 | |
| Potential failures on the Goshawk car and the need for modifications before production. | 15th Dec 1921 | Box 119 \ 2 scan0157 | |
| Component breakages and their time to failure during a bump test on a Goshawk front chassis. | 15th Dec 1921 | Box 119 \ 2 scan0158 | |
| Test log detailing failures on a 40/50 Bumper Chassis Front over running hours. | 10th Dec 1920 | Box 119 \ 2 scan0159 | |
| Log of failures recorded during a bumping test on the rear of a 40/50 chassis. | 15th Dec 1921 | Box 119 \ 2 scan0160 | |
| Bump test for the Goshawk 11, comparing its failures to the standard 40/50 HP chassis. | 15th Dec 1921 | Box 119 \ 2 scan0161 | |
| Potential fatal flaws in the Goshawk car and the need for pre-production modifications. | 15th Dec 1921 | Box 119 \ 2 scan0162 | |
| Log of breakages and remarks from a bump test on a Goshawk chassis front. | 15th Dec 1921 | Box 119 \ 2 scan0163 | |
| Test report logging component failures on a 40/50 front bumper chassis over a 94-hour period. | 10th Dec 1920 | Box 119 \ 2 scan0164 | |
| Log of failures recorded during a 100-hour bumping test on a 40/50 chassis. | 28th Dec 1921 | Box 119 \ 2 scan0165 | |
| Bump test for the Goshawk 11, detailing a frame fracture after modification. | 28th Dec 1921 | Box 119 \ 2 scan0166 | |
| 50-hour Coshawk 11 bumping test detailing spring bracket performance and subsequent spring failures. | 2nd Feb 1922 | Box 119 \ 2 scan0167 | |
| Copy of a letter from J. Woodhead & Sons Ltd. regarding a set of springs sent for a bumping test. | 6th Feb 1922 | Box 119 \ 2 scan0168 | |
| Instruction note detailing a Gos. II rear bump test with a log of hours run and parts tested. | 14th Feb 1922 | Box 119 \ 2 scan0169 | |
| 105-hour bumping test of a Goshawk II chassis, detailing spring failures and future test plans. | 2nd Feb 1922 | Box 119 \ 2 scan0170 | |
| To Mr. Warwick requesting the equivalent speed of the chassis on the bumping rig. | 4th Apr 1922 | Box 119 \ 2 scan0171 | |
| The average speed of a Goshawk chassis on a bumper rig. | 6th Apr 1922 | Box 119 \ 2 scan0172 | |
| Bump test conducted on a Goshawk-11 chassis, detailing component failures over time. | 1st Sep 1922 | Box 119 \ 2 scan0173 | |
| Steering part failures and potential improvements for front shock absorbers. | 26th Nov 1923 | Box 119 \ 2 scan0174 | |
| Bump tests conducted on a 40/50 chassis equipped with 4-wheel brakes. | 26th Nov 1923 | Box 119 \ 2 scan0175 | |
| Experimental bump test report for a 40/50 HP model, detailing component failures over time. | 26th Nov 1923 | Box 119 \ 2 scan0176 | |
| Failures of springs and steering components during testing. | 26th Nov 1923 | Box 119 \ 2 scan0177 | |
| Bumping tests of a 40/50 chassis, detailing failures in steering and spring life. | 12th Jul 1923 | Box 119 \ 2 scan0178 | |
| Log of breakages from a bump test on a new front axle and brake scheme. | 2nd Jan 1924 | Box 119 \ 2 scan0179 | |
| Log sheet detailing breakages on springs and steering components for a 40/50 model. | 2nd Jan 1924 | Box 119 \ 2 scan0180 | |
| Log sheet detailing breakages of Woodhead springs and Houdaille shock absorbers during running time tests. | 2nd Jan 1924 | Box 119 \ 2 scan0181 | |
| Analysis of spring failures during testing, detailing average life and fracture positions. | 10th Mar 1924 | Box 119 \ 2 scan0182 | |
| The despatch of a frame section for examination. | 10th Mar 1924 | Box 119 \ 2 scan0183 | |
| Bumping test that caused failures in the front springs and chassis frame. | 1st Mar 1924 | Box 119 \ 2 scan0184 | |
| Drawing illustrating cracks found on a crank mechanism. | 13th Mar 1924 | Box 119 \ 2 scan0185 | |
| Weak point in a frame with springs anchored at the rear, proposing a stiffener design for further testing. | 13th Mar 1924 | Box 119 \ 2 scan0186 | |
| Bump test report on the front springs rear anchorage, detailing running time, failures, and average life. | 26th Mar 1924 | Box 119 \ 2 scan0187 | |
| Potential over-stressing of the Goshawk chassis with added weight and the consideration of destructive bumping tests. | 1st Jan 1924 | Box 119 \ 2 scan0188 | |
| Bump test for the 40/50 model's front brakes and chassis components. | 1st Apr 1924 | Box 119 \ 2 scan0189 | |
| Bump test detailing breakages for a new front spring rear anchorage scheme. | 1st Apr 1924 | Box 119 \ 2 scan0190 | |
| Log of component breakages detailing piece numbers and corresponding running times. | 1st Apr 1924 | Box 119 \ 2 scan0191 | |
| Log sheet detailing component breakages and failures during running tests. | 1st Apr 1924 | Box 119 \ 2 scan0192 | |
| Log sheet detailing component breakages, piece numbers, and running times. | 1st Apr 1924 | Box 119 \ 2 scan0193 | |
| Log of important component failures, excluding the frame and springs. | 1st Apr 1924 | Box 119 \ 2 scan0194 | |
| Bump test comparison report on the failure rates, lifespan, and fracture points of new Firth road springs versus standard pattern springs. | 1st Apr 1924 | Box 119 \ 2 scan0195 | |
| Summary report of frame failures observed during bump testing, with accompanying sketches. | 1st Apr 1924 | Box 119 \ 2 scan0196 | |
| Failures observed during a bump test on 40/50 front brakes, concerning a worm tube and cross steering lever. | 5th Apr 1924 | Box 119 \ 2 scan0197 | |
| Broken worm tube failure during bump tests on 40/50 front brakes. | 7th Apr 1924 | Box 119 \ 2 scan0198 | |
| Log of steering arm failures recorded during a bump test. | 28th Apr 1924 | Box 119 \ 2 scan0199 | |
| Bump tests and subsequent fracture analysis on road springs. | 30th Sep 1924 | Box 119 \ 2 scan0200 | |
| Comparing the hardness and life of Woodhead and Firth leaf springs. | 20th Sep 1924 | Box 119 \ 2 scan0201 | |
| Analysis and life comparison of Woodhead front springs detailing chemical composition and performance under various loads. | 10th Jun 1924 | Box 119 \ 2 scan0202 | |
| Bump tests of Woodhead design road springs, comparing failure rates and deflections with cams at 0° versus the standard 180°. | 10th Jun 1924 | Box 119 \ 2 scan0203 | |
| Results of previous bump tests on standard road springs. | 8th Oct 1924 | Box 119 \ 2 scan0204 | |
| Bump tests on road springs and proposing a new testing apparatus. | 10th Oct 1924 | Box 119 \ 2 scan0205 | |
| Bump tests conducted on road leaf springs. | 10th Oct 1924 | Box 119 \ 2 scan0206 | |
| Bump test report for 40/50 front springs, detailing test conditions and fracture analysis. | 9th Oct 1924 | Box 119 \ 2 scan0207 | |
| Bump test report on Woodhead 12 1/2% type front springs, detailing fracture analysis. | 8th Oct 1924 | Box 119 \ 2 scan0208 | |
| Bump tests for 12½% thin leaf front springs. | 14th Oct 1924 | Box 119 \ 2 scan0209 | |
| Bump test report for latest pattern Woodhead 12.5% type springs. | 14th Oct 1924 | Box 119 \ 2 scan0210 | |
| Results of a bump test on Woodhead springs, analyzing failure points and suggesting design modifications. | 16th Oct 1924 | Box 119 \ 2 scan0211 | |
| Page 2 of a memo detailing instructions for modifications to a tapering end. | 16th Oct 1924 | Box 119 \ 2 scan0212 | |
| Testing of front springs from two different manufacturers, Firth and Woodhead. | 16th Oct 1924 | Box 119 \ 2 scan0213 | |
| Comparing the reliability of Firths springs to Woodheads springs through bumping tests. | 27th Oct 1924 | Box 119 \ 2 scan0214 | |
| Bumping tests comparing 12 1/4% Firths road springs with Woodheads springs. | 29th Oct 1924 | Box 119 \ 2 scan0215 | |
| Bump test performed on the latest pattern Firth springs for 40/50 Front Springs. | 29th Oct 1929 | Box 119 \ 2 scan0216 | |
| Bump test report detailing fracture analysis on two Firth leaf springs. | 29th Oct 1924 | Box 119 \ 2 scan0217 | |
| The tests of front road springs from suppliers Firths and Woodheads. | 5th Nov 1924 | Box 119 \ 2 scan0218 | |
| Comparison table of particulars for 1150 lbs Firths and Woodhead front springs. | 5th Nov 1924 | Box 119 \ 2 scan0219 | |
| Tests on 12 1/4% thin leaf Woodhead springs following consistent failures. | 20th Nov 1924 | Box 119 \ 2 scan0220 | |
| Bumping tests for Firths 12¼% thin leaf front springs. | 21th Nov 1924 | Box 119 \ 2 scan0221 | |
| Bumping tests on Firths front springs, comparing them to Woodhead springs. | 26th Nov 1924 | Box 119 \ 2 scan0222 | |
| Bump test results for four special type Firth leaf springs. | 26th Nov 1924 | Box 119 \ 2 scan0223 | |
| Requesting the urgent repair of a bumping rig by the Millwrights. | 11th Nov 1924 | Box 119 \ 2 scan0224 | |
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