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What years had pushrod engines?

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Motarded

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Discussion starter · #1 ·
A buddy of mine has a really nice little 50 with a funny looking pushrod engine in it. He says he gave the nuumbers to somebody and they told him it is a 63. Can anybody give me some info? I can get numbers too if that will help. Thanks
 
#3 ·
It's a cub motor, probably serial number C100E-something. They were produced up until 1967. 1967 was the first year of the OHC motors.



Does the 50 have full-sized wheels, or does it have 5 inch rims and tires? If it's got 5 inch rims and tires, I'll glady discuss purchasing it from him. The vintage minis are fun to restore. I'm always up for more bikes.



PM me if he wants to sell the thing, and send me some pictures either way. I'm a fan of all old hondas.
 
#4 ·
Here's a picture of an old honda witih the pushrod 50. The pushrod motors were slow, and didn't have the cam in the head, but rather utilized a pushrod setup like a car motor to actuate the valves.



Image
 
#6 ·
The pushrod engine

z88r,



I'd be curious to see the pushrod engine disassembled, do you happen to have any photos, at your disposal, that you can post here ? It would be interesting to see how it was designed and configured.



Tim...
 
#10 ·
at first me and motarded didnt know when we were at the guys shop, but i did some searching on ebay and figured it was a QA 50 without the big rear fender thing, the guy said he got offered 4gs for it a few years ago, and didnt take it, how stupid, but ya its just a QA50 minus some parts
 
#12 ·
five0addict said:
dont laugh at me but whats the difference of pushrod and...?
Click to expand...
Well no laughing here i didn’t know till i took a auto class in high school.



In a OHC motor like our 50s there is a is a cam gear that is driven by the lower crank either by a chain, belt or gear. That turns the valve cam thus pushing the rocker arms to open and close the valves.



in a push rod design there is no valve cam, gear, chain or belt. Instead there is a push rod that the crank pushes. The Pushrod pushes the rocker arm to open and close the valve.









this might help

Image
 
#13 ·
wouldnt you have learned in auto class the difference between and engine and a motor? because if a 50 ran off a "motor" where would the battery sit? cuz i know that my 50 runs off and "engine" that is powered by combustion and not current
 
#15 ·
Brad explained push rod engine pretty well. Very simple design. An easy way to think of it would be putting the cam in the low end. A rod rolls on that and when it gets to the lob of the "cam" it moves up pushing the rocker to open valve. My dad's XR750 engines are push rod design.





EDIT:



mo·tor

n.

Something, such as a machine or an engine, that produces or imparts motion.

A device that converts any form of energy into mechanical energy, especially an internal-combustion engine or an arrangement of coils and magnets that converts electric current into mechanical power.



It doesn't matter what you call it. Engine/ Motor. They convert electrical energy (flywheel, CDI, to spark plug) into mechanical power (combustion of fuel). :wink:
 
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