Marshall cross arm governor parts
 

Hi all

Have started a thread in the technical section but I thought I would also put something in wanted!
I'm after any cross arm governor parts,
I have got the vertical shaft the balls and all the linkage that go with the balls.
but I am missing the bottom bearing the upstand that goes on top of the main ways shaft bracket casting, particularly need a spring or the details of a spring to get some made!
All so drawing!

Thanks Chris

governor
 

We in same boat Chris - perhaps we ought to get our heads together ?

Hi
Yes, definitely, would make sense to get a few Springs made

I would reccommend Tested Springs , very helpful and spot on .

Yes mate, they made the spring for the safety valve and reversing lever, on our engine very good and helpfully! Only problem with this spring is I don't have a pattern to copy!

So , what nice man has a Marshall in pieces ?

Not sure I was hoping some one on hear!

Chris, I know nothing at all about Marshalls, but don't they just have a Pickering Governor like other engines. Besides the cast housing is a 4 bolt square fixing instead of a round fixing ?. In a box of governor parts I have, I'm sure there's a cast square based housing and someone once told me it was for a Marshall.

Hi Craig

They can have ever type, Pickering or cross arm on the way shaft bracket, our one has the cross arm type!

Chris

Thanks, you have educated me Chris. I will google it.

PM sent.

I have just dismantled my set , the spring wire is 106 to 110 thou diameter , 1+3/8" or 1325 thou outside diameter , 8" long , with coil pitch of 1/2" or 2 coils per inch , and closed ends .

Thanks you

Hi Chris, I am looking to make a guvnor valve for Ben Lomond as it is currently missing. I am looking for a drawing for a 7nhp compound. However my guvernor itself is complete and if it is the same as what you have I can send photos? Cheers. Matt

governor valve
 

Hi Matt PM sent

Hi Matt
I think the compound and single cylinder engines are different but thank you for the offer the photos
Chris

I have PM'd you Chris interested in a spring maybe 2.

Hi all

Alan has done some amazing drawing for me (Very much appreciated)
his engine is the earlier design, I have noted the pulley on the cross arm is different to the later design, the earlier type seam to have "sides" to keep the belt on and no crown, the late type has no sides and a crown,
Am thinking the later type is going to be the same diameter as the old type just minus the sides?
Can any one tell me the diameter of the pulley on the late type of pulley

Thanks for help Chris