Technical Question Involving Cams

[LoserCard]

Ok, so I am doing some research for my own reasons and I came across a factor I cannot find (or calculate to my knowledge).

The factor is: What is the max torque applied to a camshaft under load? Would it even be possible to calculate this?

[RCA]

You want to know the maximum amount of twisting force a cam shaft would be exposed to when under load...?

Well your engine drives the timing chain which is connected to your cam shaft so maybe if my logic is correct...

It will be exposed to as much torque as your engine can produce at a given time. Why do you have this question?

[LoserCard]

Just trying to figure out if I can fab up an adjustable cam gear for tuning purposes. I think I will just gather me up a bunch of sprockets instead.

Oh yeah now that you brought that to my attention, wouldn't it be 1/2 of your maximum torque output since cams move half the speed of your crank, right?

[charat]

torque has nothing to do with speed. the speed at which gears move has nothing to do with the amount of torque. the amount of torque lost to the cams is negligible.

[LoserCard]

What I meant by that is turning speed. They are turning had half the speed and requires half the effort to turn in a full rotation. Also I am not worried about torque lost in cams. I was trying to figure out if I could fab an adjustable gear sprocket to withstand the torque of the engine without losing it's setting or breaking. But I just decided that I would just get like 5 or so trash cam sprockets and work with those instead with different degree holes drilled in them.

[fabrisuzu]

idk if it is just as easy as how much torque the engine provides. I mean if it were stationary for some reason then ya it would be, but you gotta figure how much resistance is had by the springs and such. Pretty complicated stuff, but an easy way would be to measure how much torque/force would be needed to break the stock setup (if you have the equipment) and work with that as a minimum strenght to do it. Worst case, if you know someone who has access to a program like Nastran/patran or even solidworks (i prefer solidworks cuz its a much easier interface) then have them build one and do some FEA. The problem is going to be how well you know the loads, but again you could work backwards and figure out a maximum. Good luck

[LoserCard]

Thanks.

[simmode1]

Just trying to figure out if I can fab up an adjustable cam gear for tuning purposes.

Its been done before.
diy-ka24de-adjustable-cam-gears-t199829.html

[LoserCard]

Ah thanks!

[OM3GA]

JWT makes them, just buy them and never look back.

[simmode1]

^^^Word. I think $150 is worth knowing you didn't completely screw up a vital part of your motor....

[DamonDread]

^^^Word. I think $150 is worth knowing you didn't completely screw up a vital part of your motor....

WORD!