DL 45 Homepage-Comparison of Changes During The Three Years

Comparative Parts	1929	1930	1931
Headlights	Double Headlamps	Double Headlamps	Single headlamp
Toolbox	Rectangular mounted rear left frame	Canister mounted on front forks	Kidney shaped mounted on front forks
Horn	Klaxon 11	Klaxon 11	Remy 16
Front Forks	Same as Single (airfoil) extended 1 inch	Heavier solid girder	Heavier solid girder
Rear Brakes	Small drum contracting	Bigger diameter drum	Even larger diameter
Gas Tanks	4 3/8 gal. taken from the Single	5 1/4 gal.	5 1/4 gal.
Clutch	12 springs, 2 friction plates	14 springs, 4 friction plates	14 springs, 4 friction plates tab on clutch release to prevent slipping out of gear
Paint Job	Olive green except wheels, handlebars, lights, footboards and dashboard, which were black. custom colours available at higher cost	Same as 1929. replacement frames were offered in black	Same as 1930 except custom painted art deco tanks became available

29 frames were different from 30 & 31

29's had clincher wheel rims, 30 & 31 had drop center

29 rear stands were different than 30 & 31

29 seat T-bar were different than 30 & 31

29 front brakes were smaller than 30 & 31, the backing plates on 30's retained the small brake cam shaft and the brake operating lever(4123-28A, 4123-30, 4123-31) was different all three years.

29 coils were different than 30 & 31

29 timers were different than 30 &31. They came out with new style points in 1930 and the condensers were no longer built into the coils, they mounted them to the timer base.

oil pumps were different for all three years

valve covers were different all three years

tappet blocks were changed in mid 29 from 1 mounting bolt to 2 and therefore the right side of the engine case was also changed.

29 generators were different than 30 &31, The 29s had an adjustable 3rd brush and the 30-31s were not adjustable but higher output. If you look in the parts book it says generators were the same from 29 - 31 but if you check the individual parts that make up the generators you'll see that almost every part is different.

the intake manifold was change in mid 29 also. There are 2 manifolds with different casting #s- 503-29 & 503-29B. They look very similar except the 503 - 29B has a bit more rise to it. This change is not listed in the parts book.