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B002_136 137-page01 Blue page with the handwritten page number 136.
View original record 136.

B002_136 137-page02 Experimental Peregrine pistons with a more flexible skirt and thinner crown.
View original record To SF. c. Wor. c. Hs. re Peregrine Piston. We send you herewith LeC.3138. Will you please instruct one set of pistons for the above engine for experiment. This is in accordance with the experience and…

B002_136 137-page03 Issues with Peregrine piston stiffness, comparing it to other models, and proposing a more flexible design.
View original record To E. from Hs/Rm. *136- STIFFNESS OF PISTONS When we were in trouble with the Peregrine piston tightening up, we started to some tests to ascertain if the Peregrine piston was very much more rigid…

B002_136 137-page04 Investigation into a loud clatter from a Peregrine engine, identified as piston noise.
View original record Files. X136. 26.8.32. PISTON NOISE - PEREGRINE. When motoring the Peregrine engine over at 4900 RPM.(58 MPH in 3rd gear) on the chassis dynamometer it was noticed that a loud clatter emanated from the…

B002_136 137-page05 Request to change Peregrine engine pistons to a lower compression ratio for supercharger work.
View original record To FV. From Ha/Rm. To E. C. Misc. X.136. Re/Rm.7/AD26.6.32. PEREGRINE PISTONS The 5.85 C.R. pistons that we are at present running on this engine are too high for supercharger work. We therefore…

B002_136 137-page06 Piston replacement and compression ratio change for the Peregrine II engine.
View original record X136. Test Dept [crossed out] c. Hs/Rm. BY/CS3/EH.2.9.32. Re Peregrine II - Piston - Section 5040. Please receive herewith two blueprints of the following drawing:- E.100659 Piston - Flexible which…

B002_136 137-page07 Piston LeC.3214 for the Experimental Peregrine Engine, detailing compression ratios.
View original record BY. c. Hs. X136. 5.01 90/0 -25-0- E/JNR.3/HP.23.9.32. RECEIVED 23 SEP Experimental Peregrine Engine. -------------------------- Please receive herewith LeC.3214 - piston for the above. The compression…

B002_136 137-page08 Confirming the decision to proceed with dies for die-cast pistons for the Peregrine engine, citing issues with sand castings.
View original record RECEIVED XI 27 J/36. To BY. from E. K.1/HP.13.1.33. C. Hs. re Peregrine Pistons. -------------------- This confirms our conversation of this morning that you are going ahead with the dies for the…

B002_136 137-page09 Dimensions and modifications for piston scraper rings on Kestrel and Peregrine engines.
View original record X 136. FILES. 9.3.33. PISTON SCRAPER RINGS. Dimensions of the perfect circle ring fitted to our various engines are as follows (Diagram labels: A, B, C) A. B. C. Kestrel IB. .188 .085 .050 Kestrel IS…

B002_136 137-page10 Limitations of chassis engine pistons and proposing new designs for testing.
View original record To Sg. } from E. X136 Wor. } c. to Hs. By. E.8/HP.11.5.33. X.4553. X.7040. X.5040. X.4027. CHASSIS ENGINE PISTONS. From the results we have obtained with running engines at high speeds on Bensport,…

B002_136 137-page11 Drawing illustrating the development of various piston designs.
View original record PISTON DEVELOPMENT DIA. A DIA. B KEY DIAGRAM FOR DIAMETERS PHANTOM PI C.I. HEAD MATERIAL S.B. WEIGHT 1 LB 10 1/2 OZS P.I. C.I. HEAD MATERIAL S27 WEIGHT 1 LB 10 3/4 OZS P.I. W.A.M. HEAD MATERIAL S.S. 7…

B002_136 137-page12 Single page numbered 37, the rest of the document is blank or the text has faded to become illegible.
View original record 37.

B002_136 137-page13 Shorter propeller tube and chassis alteration for the Peregrine project.
View original record HDY. FROM R. X137. R1/M25. 8.32. C. to SG. WOR. DA. C. to HS. BY. E. PEREGRINE. DA. EV. and I decided that we ought to have not less than 12" shorter propeller tube - i.e. 45" between centres, and,…

B002_136 137-page14 Sending a diagram for the Peregrine foot and brake linkage with a supplementary propeller shaft.
View original record BY. FROM DA. X 137. DA3/M.9.32. C. to SG. WOR. HS. E. PEREGRINE FOOT LINKAGE WITH SUPPLEMENTARY PROPELLER SHAFT. Herewith we send N. scn. 3531 - diagram of the brake linkage with the cross member…

B002_136 137-page15 End thrust tests of hardened and white metal propeller shaft splines for the Peregrine engine.
View original record 8139 R. from He/Ha. c. Sc. H.T. c. L. SY. c. Da. HAY. He/Ha.14/KT.24.10.32. END THRUST OF PROPELLER SHAFT. K484. We have carried out tests on hardened splines and white metal splines on Peregrine. We…

B002_136 137-page16 Graph plotting Sliding Effort against Torque for a Peregrine prop-shaft with hardened splines.
View original record Hs 738 PEREGRINE PROP: SHAFT 8-10-32 RR.Sch 168/9. SHORT TYPE. HARDENED SPLINES SLIDING EFFORT - LB. 600 400 200 TORQUE LB. FT. 50 100 150 200 KB

B002_136 137-page17 Results of tests conducted on propeller shaft splines.
View original record X137. S. From He/Sn. P. MS. ROY. P. S. SY. C. DR. HAV. He/Sn.S/TA.22.11.32. PROPELLOR SHAFT SPLINES. YDSG We have now completed tests on propellor shaft splines showing that we cannot get very much…

B002_136 137-page18 Graph plotting sliding effort against torque for Peregrine propellor shaft splines.
View original record PEREGRINE PROPELLOR SHAFT SPLINES ALL TESTS TAKEN ON SHORT TYPE TUBES - RRS. 168 B.11 32 18.11.32 SLIDING EFFORT LB TORQUE LB FT STANDARD 3/N SPLINES HARDENED 3/N 3/4N WHITE-METALLED

B002_136 137-page19 Recommendations for the balancing and assembly of a Peregrine propeller shaft.
View original record X137. a. From Ha/Gry. b. to CE. c. to HT. d. to L. e. to Dw. f. to H.V. Ha/Gry./W/SA.24.11.32. PEREGRINE PROPELLER SHAFT. On the 3rd. Peregrine chassis we have fitted a 2 1/4" diameter propeller…

B002_136 137-page20 Blueprint of a rear propeller shaft coupling flange with a correction instruction.
View original record DRILL TO CORRECT UNBALANCE COUPLING FLANGE - PROP SHAFT - REAR

B002_136 137-page21 Balancing Peregrine propeller shafts and the associated challenges compared to the 20/25 model.
View original record BY. SPT. 8137 Hs/Gry.8/KT.6.1.33. BALANCING OF PROPELLER SHAFTS. We are sending you a diagram of how we recommend correcting unbalance on the Peregrine propeller shafts. It is not possible to do so in…

B002_136 137-page22 The hardening of the toothed coupling for the Peregrine transmission.
View original record To BY. from E. c. Hs. KHC. 8139. (handwritten) E.2/HP.12.1.33. Peregrine Transmission. It is essential we think for the toothed coupling on the tail end of the gearbox to be hardened, both the driving…

B002_136 137-page23 Material specification error and subsequent correction for the Peregrine transmission coupling.
View original record E. a. Hs. c. RHC No. 140. X137. BY./G.13.1.33. PEREGRINE TRANSMISSION. Referring to E.2/HP.12.1.33. the coupling behind the gearbox in the form of a toothed drive we specified originally in error in…

B002_136 137-page24 New roller bearing sliding joint design for propeller shafts.
View original record x 137c BY. FROM DA. DA2/M28.1.33. C. to SG. WOR. HS. E. PROPELLER SHAFTS. X.484 X.4027. Herewith is N. scheme 3647 shewing a suggestion for a roller bearing sliding joint on the propeller shaft which…

B002_136 137-page25 Proposal for a new design of the Peregrine propeller shaft's sliding joint to improve stability and lubrication.
View original record DA. FROM R. C. to SG. WDR. HS. BY. PEREGRINE PROPELLER SHAFT. Since we have found that the dynamically balanced propeller shaft will run quietly up to any speed approaching the proper master whirling…

B002_136 137-page26 Table detailing propeller shaft lengths and their safe maximum speeds for various chassis types.
View original record To R. from Hs/Gry. c.c. Rg. Hax. c.c. K. Dn. c.c. By. Hdy. X137 Hs/Gry.1/ET.6.2.33. PROPELLER SHAFTS. HL/ML.2.33. We are sending you a table of the lengths of the propeller shafts between universals…

B002_136 137-page27 Modifications to the Peregrine propeller shaft, focusing on the sliding joint and lubrication.
View original record X.137. To By. from DA. DA.1/11.2.33. c. to Sg. Wor. Hs. E. Hdy. PEREGRINE - PROPELLER SHAFT. ------------------------- As referred to in a recent memo (E.1/M.1.2.33) R. has suggested putting the…

B002_136 137-page28 Schemes and modifications for the Peregrine propeller shaft.
View original record X137 BY. FROM DA. DAL/M25.2.33. C. to SG. WOR. HS. E. HDY. PEREGRINE PROPELLER SHAFT. -------------------- With further reference to DAL/M11233, sending some schemes for enclosing the propeller shaft…

B002_136 137-page29 Issues of whirling, vibration and balancing of the Peregrine transmission shaft.
View original record X137. To R. From Hs/Gry. Hs/Gry.15/KT.27.3.33. C.C. AG. WGT. C.C. E. EV. C.C. D. PEREGRINE TRANSMISSION SHAFT. R4/Mno.3.33. Perhaps we have not made it clear that the trouble with the early Peregrine…

B002_136 137-page30 Propeller shaft damper for the Peregrine engine to address transmission rattles.
View original record X137. Da. from Hs/Gry. Hs/Gry.18/KT.10.4.33. PEREGRINE TRANSMISSION RATTLES. We send you herewith a sketch of the smallest propeller shaft damper we have used on Peregrine. The were white-metalled on…

B002_136 137-page31 Drawing for a light hydraulic component, reference H.986.
View original record H = 986 LIGHT HYDRAULIC PPR H.986 7.000 Dia 5.750 Dia 3.840 Dia ± .001 1.25" 9.400 Dia. 6.400 Dia ± .002 25 lbs in² M.1250 6 - OFF U.14357 / B.H.T. OVHD. S/N

B002_136 137-page32 Schemes for the Peregrine 2 propeller shaft sliding joint.
View original record Ex. FROM DA. C. to G.C. EDE. ES. & REM. X137. DAW/W25.4.33. PEREGRINE 2. PROPELLER SHAFT. With reference to DA1/W22.3.33. we now send the original of N. sch. 3708. Propeller shaft sliding joint. As we…

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