A Stuart Williamson build

[Michael S.]

That all looks very good!  And that controler is really very small.

Michael

[Roger B]

Nicely done    Small bits are fun 

[Sanjay F]

The governor is done with a cherry (finial) on top  , next is what is described in the Jockey bracket, pulley and spindle. Not sure why its called that but it appears to be transferring the crankshaft rotation through 90 degrees in order to drive the governor pulley via the belt drive?

[Jasonb]

I suppose you could say they are not pulleys but jockey wheels that guide the belt so the bracket that holds them would obviously be a jockey (wheel) bracket. A bit like you have jockey wheels on a bike rear mech guiding the chain.

[crueby]

Is a jockey wheel another term for an idler wheel?

[Michael S.]

In our system, it would be called a deflection pulley.

Michael 

[Sanjay F]

I have no idea, but I guess it's a guide (or jockey) pulley hence the name ....always interesting to see how these names have been derived

[crueby]

I have no idea, but I guess it's a guide (or jockey) pulley hence the name ....always interesting to see how these names have been derived

Yes - regional names for things can be interesting!

[Sanjay F]

I made the 'jockey' bracket and pulleys and it turned out reasonably well; the metal has to be sawn halfway through to create a crease and bent along that axis to give the angle. However once fitted I noticed the drive cable isn't horizontal which I don't think will affect anything, but to me looks unsightly ........ I can't bend the metal anymore as I have no more tolerance or gap, so I'll simply make a spacer to lift the jockey to the correct position.

I'm not sure why this has occured as all the other fittments such as the cable alignment vertically down from the 'jockey' pulleys seem fine ............oh well, not a biggy and solvable! 

[Sanjay F]

Interesting looks like someone else had the same issue .... strange

[crueby]

Can you put another block under the arm to raise it up? Looks like the studs there are plenty tall, and don't have thread above the arm for a ways, abouyt the distance needed to raise the arm/bracket up...

[Sanjay F]

Yes exactly what I'm thinking Chris, the studs are actually a pair I put in rather than those supplied; I wanted to see if they would work with a 'block' underneath which they will. 

This has been a really interesting build for me so far and has tested my skills and forward thinking; good to challenge oneself a little more each time. I have made a few mistakes along the way, which have either been recoverable or with bits needing to be built from scratch so other than frustration and adding to the scrap box, no big deal 

[Jasonb]

Sanjay, I believe the jockey wheels should be free to rotate with just the washers on the ends of the spindle soft soldered or shaft being peened over. Though today loctite if used sparingly would be an option.

These engines have a job getting the governor to run smoothly so any reduction in friction will help with that so free running wheels are needed. Or you could convert to gear dive like the original

Rectifying that may need a new bracket which could be made taller, if not then I would go with a riser block fitted to the bearing cap, filled and painted to look like part of the cap casting.

[PaulR]

Our of my league really but alternatively couldn't you shorten the bracket holding the governor? It looks like there's room to saw off the base and solder it back on higher up. 

[Charles Lamont]

Sanjay, I believe the jockey wheels should be free to rotate with just the washers on the ends of the spindle soft soldered or shaft being peened over. Though today loctite if used sparingly would be an option.

These engines have a job getting the governor to run smoothly so any reduction in friction will help with that so free running wheels are needed. Or you could convert to gear dive like the original

Rectifying that may need a new bracket which could be made taller, if not then I would go with a riser block fitted to the bearing cap, filled and painted to look like part of the cap casting.

If both jockey wheels are soldered to the shaft they cannot run in opposite directions, as they would like to do. They might even work with no retention, just reying on the belt to hold them in place, but to be sure of that, the belt might need to be tighter than otherwise desirable, or the spindle excessively long.