I guess a rename might be in order. It would save me from actually starting a new thread
I am putting the sprocket on the axle about an inch away from the CV joint so it gets very little movement. From full extension to full compression of the wheel is about an inch of movement at most at that point. The suspension droops a lot more than it really should with the cut springs so I will be putting limiting straps on it anyway. right now with the wheels hanging in the air the springs could possibly fall out. So fixing that problem will make the sprocket movement pretty small.
I really don't like the idea of using #40 chain for a car. It just seems small.
Code:
ANSI 29.1 roller chain standard sizes
Size Pitch, in. Roller diameter, in. Ultimate strength, lb. Working load, lb.
25 0.250" 0.130" 781 140
35 0.375" 0.200" 1,758 480
41 0.500" 0.306" 1,500 500
40 0.500" 0.312" 3,125 810
50 0.625" 0.400" 4,880 1,430
60 0.750" 0.469" 7,030 1,980
80 1.000" 0.625" 12,500 3,300
100 1.250" 0.750" 19,531 5,072
120 1.500" 0.875" 28,100 6,800
140 1.750" 1.000" 38,280 9,040
160 2.000" 1.125" 50,000 11,900
180 2.250" 1.460" 63,300 13,700
200 2.500" 1.562" 78,000 16,000
240 3.000" 1.875" 112,500 22,250
810lbs working load probably mean at best I will get 10,000 miles on a chain before it breaks. If I can get a #50 chain that will make it much better but the only way to do it would be to add a gear reduction shaft and that means more parts and more points of failure.
from a web search.
Quote:
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530 chain has a pitch (distance between center line of rollers) of 5/8". The roller diameter is .400" and the width (inside distance between plates) is 3/8". #50 chain has the same specifications. An O-Ring 530 will be wider #50 and 530 chain are the same in dimensions. #50 is the ANSI industrial chain designation while 530 is the motorcycle industry designation for that chain. Both have the same specifications and can be used in place of each other (other than the 530 will be slightly stronger in regular chain and much stronger in the o-ring version).overall, but still has the same critical (roller, pitch, and inside width) dimensions.
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So I really need to use #50 sprockets so I can use o-ring chain like I was planning. It will last much longer.
Standard Roller Chain Sprocket Diameter - No. 50 Chain shows the diameter and I have a 3.75" max radius without grinding a notch into the control arm. I might possibly get 4" if I grind everything down. If I could possibly get an 8 tooth front sprocket then it would work great. If not I will have to build a shaft to do my gear reduction. I guess I need to hunt around and see what I can find. I have a week or two before spring break so I have time to look for stuff.