Engines > Restoration of Model Engines
Rusty restoration requiring reverse
Sanjay F:
I have one engine where I'm waiting for the paint to dry, another where I'm waiting for the JB Weld to dry so need something to keep me occupied!
I've had this very rusty vertical engine sat on the shelf for quite a while and I think it's time to give it some attention and see if it can brought back to life. I sat it next to a Stuart 10v and a ruler so you can get some idea of its size. I've also taken a video of it before starting on it which makes a change.
As you can see it's VERY rusty, but turns over by hand, the bearings are worn and will need replacing and at some point in its life it must have had a reversing lever.
My plan is to strip it down, clean it up, rebuild it until it hopefully runs then I'm going to try and make the necessary parts for the reversing lever mechanism. I'd like to base it on the Stuart type mechanism but can't work out which Stuart vertical model it's nearest to in terms of size so I can check out the drawings - anyone out there have any idea?
This should keep me out of trouble for a while .......................... ;D
https://www.youtube.com/shorts/kX57icIGjCE
EDIT: I think it's closest to either a Stuart No.4 or No.7 ??? :thinking:
Roger B:
That does look to have had a hard life ::) I'm sure you can work your magic on it :ThumbsUp: :ThumbsUp: :)
Jasonb:
Give us some numbers like bore and stroke then it will be easier to decide on what Stuart it is close too, probably a No 7 or No4. Though it would not be hard to scale up or down other engines reversing gear.
End float on the crank is not really bearing wear, just needs the flywheel moving up against the bearing to take out the movement.
I say give it some air as it is, will most likely run, just hold the expansion link over to one side. :stickpoke:
Sanjay F:
I managed to adjust the port distances so they were equal, gave it some air and it spun over and stopped like the timing is out but everything is way too rusted to adjust.
I managed to strip the whole thing down after a good soak in Liquid Wrench and making witness marks on everything as I go. I only sheared off 2 bolts in the process, these were from the bottom cylinder cover; I drilled them out and re-tapped them. So far so good, and everything is having an overnight bath in rust remover so let's see what things look like in the morning.......
I included some pictures, I think the bore is 1.062" or 1 1/16" (strange size?)
and the stroke must be 1.5" given the measurement I have shown is 0.75" (not a good picture as the calipers are off centre) - is that right?
Jasonb:
That's right 1 1/2" stroke. either No7 or 4 would do as you have the stroke of the No4 and close to the bore of a No7
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