Chain drive a p pump

Roller chains don't actually "stretch". The pins and links wear and it gets longer from that. I would use top quality American made chain (i.e. Diamond, Drives, Tsubaki). There is a big difference between American and China in roller chains. We're required to run American roller chain on our pulling sleds for that reason.
I am curious to see how it would effect timing as the chain wears. I don't think you'd have an issue from pull to pull, but more of an issue towards the end of pulling season after a lot of runs.
 
lubeowner said:
Several years back I started this project for the 6.0. Then the American Ride was built with the 6.4. We built a dual pump setup and it pulled well. So the p pump was shelved. Now the 6.4 needs more fuel then 2 pumps can supply and I hate the electronics. So I got this back out. The Funks with Funkengrueven pull up here with Badger State. After seeing there setup I thought we can do something like that. The. The other day I was at the store and saw the gears and chain. So I thought "wonder if that would work?". So i had a buddy mod a couple parts laying around and this is where we are. We can always change it to belt but the chain is super fast and cheap to get pump mounts made. I guess I am gonna try this and see what happens.
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Just mount a third pump, lol, j/k I hope it works out.
 

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I really don't see the strength of the chain being an issue. I see pretty good power loads being held by a #50 chain, and you can always go a bit bigger.

I say go for it.
Chris
 
Signature600 said:
I really don't see the strength of the chain being an issue. I see pretty good power loads being held by a #50 chain, and you can always go a bit bigger.

I say go for it.
Chris
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Exactly. Running the reels on a 35' flex head is way more torque load than a p-pump plus the shock of weeds etc on a combine is sporadic where a pump is a fairly linear load


Sent from my flashscan v2
 
ParkerFly said:
Roller chains don't actually "stretch". The pins and links wear and it gets longer from that.
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Correct.

I don't see strength of a 530 chain being an issue. If it'll hold up on a bike with over 100hp it will be fine for your application. If you go chain, I would suggest a good, sealed, X-ring chain.

The issue I see is keeping the chain lubed. It's going to be dirty. A belt would offer the same strength, no stretch, and be much cleaner. I know your not worried about noise, but it would also be quieter.

My $.02
 
will24 said:
Exactly. Running the reels on a 35' flex head is way more torque load than a p-pump plus the shock of weeds etc on a combine is sporadic where a pump is a fairly linear load


Sent from my flashscan v2
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Comparing a reel on a combine to the precision needed to run a injection pump is apples to oranges. The longer the chain the more it's going to lengthen over time. A double roller on a cam in a gas race engine should be changed every rebuild or every season. Not saying it won't work but I would look into a small blower belt type. Hope it works if you do try and run it
 
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BigPapa said:
I don't see strength of a 530 chain being an issue. If it'll hold up on a bike with over 100hp it will be fine for your application. If you go chain, I would suggest a good, sealed, X-ring chain.

The issue I see is keeping the chain lubed. It's going to be dirty. A belt would offer the same strength, no stretch, and be much cleaner. I know your not worried about noise, but it would also be quieter.

My $.02
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This is what I am saying.
 
You are really pushing it from an input speed standpoint for a roller chain with that large of a pitch. Centrifugal force may be a significant part of the chain tension at 5500+ rpm and then you may have a 20 hp load on top of that. Sometimes we can get away with a lot 13 seconds at a time but it definitely isn't ideal. Build a good chain guard around it!
 
Here is tonights quick mock of the pump. Gotta get it all straight them make things bigger and stronger.
 

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We built some back in the day. They are partially a 6.0 injectors and parts of international tractor injectors. They work on the flow bench.
 
DISTURBED said:
What are you going to use to keep the chain tight?
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Since we were talking combines.... :)
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cfunk said:
You are really pushing it from an input speed standpoint for a roller chain with that large of a pitch. Centrifugal force may be a significant part of the chain tension at 5500+ rpm and then you may have a 20 hp load on top of that. Sometimes we can get away with a lot 13 seconds at a time but it definitely isn't ideal. Build a good chain guard around it!
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Actually the pump only spins half the speed of the motor.
 
lorendiesel5.9 said:
Actually the pump only spins half the speed of the motor.
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That is true but does not matter when talking about centrifugal force. It is relative to chain speed which is the same at the input and output since the output rpm is half of the input but the sprocket diameter is 2x larger than the input. This is why if you look at the horsepower ratings in a chain catalog the rated capacity decreases as speed increases. The tension from cetrifugal force adds to the chain tension that has to transmit torque.
 
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