ELASTIC RADIAL DEFORMATIONS OF FLYWHEELS. 301 
erent pois 
30 = i lize 1] = 
26 = = see att z 
24 ae = : : 
22 & se aa : Sees 
20 
of: Sh SSR : : = tyke 
18 ig denies eee fe SS Se | Ee zs Hee 
ania SaaS Seas aia 
16 pe ieeinnastasi seins i ieee eal 
es + fate pee ; fee ee $ E = : 
fae a | 
%~0 rss: te: ni Sat set fas i EE 
512 renee ages : ze cuit is 
Si Ee SS Sis SS eae Haart 
S10 Tgieunuee meee + Hiner 
Sak eS ses Ea 2 Ba ee 
mo Q pee Se eee eel 
Ss Seeesiary ell tel pase : Hee 
= 6 =e Hii ; flat +H 
84 oe i 
ie SSIES : : eee fini | 
A 2 eee se cate 
ess] te 3 Fj $Ht i 
O Feeeiee eee ieee 
(Eee re cae ieeeaseeeasctetstesl a i 
— SHAH es Hay: at aH ; : 
FoBessiec aces pete Batata i i 
—4 rte : = i i 
—6 Se eS : : - 
Arm f£-25° 22-50 SBE 45° 56°25° 67°5° 78°75° es Arm 
Position on Rim. (jointed) 
Fig. 27—Four Armed Wheel, jointed along the arms. Curves shewing 
deformations of Bays A and C at various speeds. 
No. 1, Bay A, 16 revolutions per sec. No. 5, Bay C, 16 revolutions per sec. 
4 
33 2, 33 1 33 be) a9 6, 39 14 33 39 
” 3, 29 thee ” 29 3) fs 39 12 33 oy) 
33 4, 23 19 3° 3) 33 8, EB) 10 Ee) 33 
caused this inflection. The castings of this wheel were 
very much twisted before they were machined, so that this 
may be the cause of the peculiar results obtained from bay 
A. The deflections of bay C are very similar to those of 
the unjointed four-armed wheel, the joint apparently not 
weakening the wheel as far as its radial deformations are 
concerned. 
In figs. 28 to 33 is given a summary of the manner of 
deformation for each of the six wheels at a speed of 14 
revolutions per second. These shew at a glance the rela- 
tive deformation of the wheels of different numbers of arms 
and the effect of curved arms and flanged joints. 
