Opinions from Others.
Page 17
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The Editor invites correspondence on all sub,;,.cis connected with the hse of courtlier ial motors. Letters :hould he on one side of the paper only, and type-written by preference. The right of abbreviation is reserved, and no responsibility for the views expressed is accepted. In the case of experiences. names of towns or localities may be withheld.
Low Petrol Consumption.
The Editor, TnE COMMERCIAL MOTOR.
[1,146]have road with much interest the 1.tter No. 1,4=2 from Messrs. Rolls-Royce, Ltd., which appeared in this week's issue of your paper, and thank them for the inforthation they have given. regret not having communicated with them direct, as their record deserves every commendation, and there was no intention of misleading the public in the matter.—Yours faithfully, Chiswick, W., KEN. J. TBovsosl. 27th October, 1901.
11,417] Sir,—I have read with some interest the correspondence that has been carried on in your paper with reference to the petrol consumption of various types of commercial vehicles. I note with considerable surprise that a consumption of from 60 to 80 ton-miles per gallon of petrol is claimed by two different manufacturers, and find it difficult to reconcile these figures with those actually obtained
by ordinary users. Would it not be possible for these claimants to carry out an official test over a moderately-hilly route under R.A.C. supervision ?
The above claims are ahead of any guarantee that I have been able to obtain.. -Yours faithfully, W. RUDDLE BROWNE, M.I.Mech.E. 14a, Leicester Square, W.C.
[1,448] Sir,—I have noticed some correspondence in your paper re the " Iate " record of 57 ton-miles made by the Rolls-Royce Co., wherein some firms stated that they can obtain better results than the above (when nobody is looking), one gentleman giving the results obtained in a dream, viz., 85 tonmiles per gallon of petrol? There is no doubt that the Rolls Royce performance of 57 ton-miles was an excellent record, and deserved a longer life. I quite agree with Mr. Johnson that a record of 70 ton-miles would be of no value to the private user, if the driver had to be continually changing gear, this being—as Measrs. RollsRoyce, S. F. Edge, Sheffield-Simplex, and others seem to have realized--a very great nuisance to the average driver. It may be of interest to point out that the Delahaye car fitted with the Thomas transmission, which recently made the record of 67.9 tonmiles from London to Edinburgh and back, had a four-cylinder engine of only 75 mm. by 110 aim., and carried nearly ton of passengers and dead weight ; there was, of course, no change gearbox on their car at. all, the necessary torque variation being obtained simply by moving a lever in much the same manner as the spark advance lever is rnanipulated on an erdinary car.—Yours faithfully,
J. G. P. THOMAS.
14, Leonard Place, Kensington,
Russian War Office Vehicles.
The Editor, THE COMMERCIAL MOTOR.
[1,149] Sir,—We regret that, owing to the writer's absence in America, the letter from Messrs. Sidney Straker and Squire, Ltd., published in your issue of the 12th inst., has not received earlier attention from us. We were informed by our St. Petersburg agents, on 24th August, after the completion of the Russian Military Trials (St. Petersburg-Moscow-St. Petersburg), that out of 16 cars which participated three (two of Continental manufacture and the third a Cornmer Car) had been adjudged the best by the Imperial Russian War Office. As we had been informed that all cars owned by the military authorities and stationed in St. Petersburg took part in the trials, and the vehicle supplied by Messrs. Sidney Straker and Squire, Ltd., was not mentioned on the list, we formed the opinion that Commer Cars were the only British-made cars which had been purchased. Since the publication of the above-mentioned letter, we have ascertained from our St. Petersburg agents that Messrs. Sidney Straker and Squire, Ltd., supplied a vehicle to the Russian War Office some time ago, and under the circumstances we beg to tender our apologies for the mis-statement in the advertisement, which has since been withdrawn.— Yours faithfully, L. G. JAMUL, Export Manager, For COMMERCIAL CARS, LTD. Cambridge Circus, W.C.,
27th October, 1911.