Wadkin DM

[Malcolm McLeod]

Clearly, you've got grander plans - and the machine tools to execute them, but for mere mortals there are several manufacturers that offer roller cam actuated valves (i.e. this is the cam for a range of valves).

You'd still be faced with some means of mounting it, but this might be manageable for most users?

[Brian Holcombe]

That would work fine, I suspect. Overkilled seemed appropriate in this case.

[Brian Holcombe]

Process continues and I realized my current failings and changed my design a touch to accommodate them.

I thought the roller bearing alone would do it, but it doesn't quite give me the travel needed without making the ramp up too harsh. So, 'easy' fix, I will built a rotating ramp.

The 'pistons' are smooth as can be, they're 52000 series bearing rod riding in 1.5" of graphite bronze bearings. The tops are stainless riding in graphite bronze. Everything reamed in one position on the mill, so it is really smooth as can be.

The air solenoid has a spring, so probably the internal spring was redundant but a little extra help can't hurt.

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[Darcy Warner]

I'm not sure what's going on, but I do love me some mcmaster carr too.

[Brian Holcombe]

It’s a fancy extension to a rod actuator. I needed to find a way to actuate from the contact point, to the actuator without putting everything up too high. The contact location is a bit awkward to reach, hence my approach.

[Darcy Warner]

It’s a fancy extension to a rod actuator. I needed to find a way to actuate from the contact point, to the actuator without putting everything up too high. The contact location is a bit awkward to reach, hence my approach.

Right and mcmaster carr is helping. Lol.

[Brian Holcombe]

Quite a bit!

[Jim Becker]

I think that Brian has the equivalent one of McMaster's remote warehouses in his shop now as there's such frequent interchange of "stuff" for money. Pretty soon, they will be installing a conveyor belt right to his door.

[Brian Holcombe]

A conveyer belt to the door sounds nice

[Jim Becker]

Yea, I don't think there's been a single time I've visited that you didn't have a nice new package from McMaster sitting there with new goodies inside. LOL

[Brian Holcombe]

Be still my beating heart.

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[Malcolm McLeod]

Knowing McMaster prices, I have to look at a pile like that on my bench and exclaim, "Be beating my still heart!"

[David Eisenhauer]

Jeez Brian, If you ever get completely up and running, they will have to fell the Amazon to keep up with you.

[Darcy Warner]

Knowing McMaster prices, I have to look at a pile like that on my bench and exclaim, "Be beating my still heart!"

Honestly, for most things I find their prices reasonable, but I am not just buying stuff I could get at the hardware store.

[Brian Holcombe]

Knowing McMaster prices, I have to look at a pile like that on my bench and exclaim, "Be beating my still heart!"

Jeez Brian, If you ever get completely up and running, they will have to fell the Amazon to keep up with you.

Hehe, I appreciate your confident!

Honestly, for most things I find their prices reasonable, but I am not just buying stuff I could get at the hardware store.

This is my experience as well, jokes aside I usually check against prices for quality stuff on Amazon. McMaster's real advantage is that everything is next day service (I'm down the street, so that makes it better or worse depending on one's perspective) and anymore the pricing is pretty competitive so long as the comparisons are fair. Plus they have drawings of everything, so that makes planning my projects out way easier. Nice to be able to see something like the tolerance on a shouldered bolt's shaft.

They're very competitive on some things like larger custom shafts. I needed a couple shafts for Patrick's job and having them made locally would have been absurd for a one-piece run.