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mudcow007 |
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mudcow007 World Chat Champion
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duhawkz |
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duhawkz World Chat Champion
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CHR15 |
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CHR15 Turbo nutter bastard
Joined: 14 Jun 2008 Karma :
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Posted: 21:30 - 10 Sep 2014 Post subject: |
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piece of piss sidevalve motor, has about 3 moving parts.
first engine i ever rebuilt aged about 12. ____________________ Turbocharged drag thing / project death weapon / GK73A
Ste: I'm not entirely sure how you'd go about verbally abusing someone with a potato but I'm sure it's possible. |
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mudcow007 |
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mudcow007 World Chat Champion
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stevo as b4 |
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stevo as b4 World Chat Champion
Joined: 17 Jul 2003 Karma :
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Posted: 21:37 - 10 Sep 2014 Post subject: |
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Pics asap!
Erm, it might be autistic of me to admit it, but yes I have played with old lawn mowers. The first one was a 1950's Atco cylinder mower with a Villiers 4stroke engine. My dad and I did a resto on it together as a joint winter project a few years back.
The second one I still have, its an Atco B16 hover mower, I guess it's from around late 70's/early 80's.
I did a full re-build and budget resto on this one, as it was all pretty solid and having a plastic deck it didn't need a lot of work.
The main expense and time spent was initially on an engine re-build. I cracked the crankcase top cover trying to remove a stuck main bearing. But I gave up on the original motor when I found out it was the same Tecumseh 2stroke engine as the flymo machines.
This allowed me to re-build a later MV100S engine that had CDI ignition and better crank bearings and oil seals. I got carried away though as I was bike less at the time.
It ended up with a 1mm re-bore, new piston&rings, all new bearings gaskets and oil seals. I had 0.5mm skimmed off the block deck face, I ported the reedblock and polished the intake/transfer passages, as well as squaring off the edges of the exhaust ports and filing down the throttle spindle in the carb, and knife edging the butterfly.
I went back together and ran, but the compression was so high I broke the rope on the re-coil start, and it had about a 2000rpm idle due to me taking too much material off the throttle plate.
I have no lawn now, and no need for it, but having spent £120 on parts for a £20 lawn mower I can't really sell it lol! Maybe I could put the motor in a Kart chassis if anyone threw one at me?
The Qualcast Suffolk punch is a solid old school mower, the engine's (especially the troublesome zenith carb) were never great, but it could be an interesting project.
The bottom blade and the rotating cylinder drum are the two critical components that have to be in decent condition, to make a restoring it worthwhile. Everything else is easy to fix, but a cracked bottom blade or mangled cylinder drum would be show stoppers really. |
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mudcow007 |
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mudcow007 World Chat Champion
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stevo as b4 |
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stevo as b4 World Chat Champion
Joined: 17 Jul 2003 Karma :
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Posted: 21:51 - 10 Sep 2014 Post subject: |
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That looks to be all there, and with a strip down, clean up and re-paint could look bloody good if you ask me. You might need to replace a few generic bearings, and have the blade re-ground etc. I don't know if they are belt or chain drive on those, I've only had a Webb's cylinder mower to work on.
I have had one of those Suffolk punch engines, with the tank on the flywheel cowl though, and it made a water pump with it. That little Zenith carb is a nightmare for stuck needle valves, flooding, leaking fuel from every join, and just causing grief!
I bet it would run much nicer with a little Mikuni from a bike/moped engine instead! |
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duhawkz |
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duhawkz World Chat Champion
Joined: 03 Dec 2006 Karma :
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mudcow007 |
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mudcow007 World Chat Champion
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Stephenniall |
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Stephenniall Two Stroke Sniffer
Joined: 21 May 2014 Karma :
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Posted: 22:09 - 10 Sep 2014 Post subject: |
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My dad bought me one of those when I was about 7, to teach me how engines work.
Very very simple engine to rebuild.
They come with an very basic carb, that should be your first point.
Take it apart and clean it, follow any basic guide on carb cleaning online.
Mixture screw should be all the way in, then 2 and 1/4 turns out.
There will be a few sprockets and a clutch on the side of the mower, to be honest if there isn't any damage I doubt there will be much that needs doing, apart from having the blades sharpened, these old mowers live forever.
For your fuel leak, I'd take the fuel tap off and clean it. The little cork gasket shrinks in them if left without petrol, soak it in petrol and it will expand and seal better. Replace the fuel lines, and if it's leaking from your carb, take the carb off, clean it and make sure your float isn't sticking. |
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andys675 |
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andys675 World Chat Champion
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Baffler186 |
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Baffler186 World Chat Champion
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STONEY! |
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STONEY! Brolly Dolly
Joined: 14 Sep 2005 Karma :
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Posted: 11:36 - 12 Sep 2014 Post subject: |
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Got asked if I could clear an old workshop a couple of years ago when scrap prices where high.
Sure no problem, turned up at the job and the place was so overgrown you couldnt even see the workshop, turns out it hadnt been touched in 20 years!
Went home got brush cutters and chainsaws, hacked away and found 40 or so of these mowers under the weeds and brambles, along with a tractor and some bicycles.
Finally got to the workshop and found it as overgrown inside as everything was outside, there was another 10-15 mowers in there including some big dennis ones, a few chainsaws and various other garden machinery.
Tried selling some of the better stuff on ebay but got messed around, had no space to keep it at the time so sadly most of it got weighed in |
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stevo as b4 |
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stevo as b4 World Chat Champion
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smegballs |
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smegballs World Chat Champion
Joined: 28 Oct 2007 Karma :
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Posted: 00:13 - 13 Sep 2014 Post subject: |
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A project I want to do at some point with my many old mowers with various briggs 3.5s in.
1. Get one mower engine, leave as is.
2. Get another mower engine (with reasonable compression), make an adaptor for the spark plug hole with one way check valve. Remove carb throttle plate.
3. Fab a steel deck (can add wheels at later date) with both engines next to each other.
4. Couple both engines with belt drive.
5. ????
6. Now haz portable-ish petrol powered air compressor
The full plans I drew up include, propane bottle reservoir, blow-off valves for safety etc (Altho it can't get beyond the 120 psi or so of the piston anyway really). You could potentially go pretty far with the design as well if you wanted. Add a centrifugal clutch to the engine before the belts and make up some kind of pressure sensitive linkage from the reservoir to the engines throttle: When the bottle is full, the engine goes to idle and stops driving the compressor, when the pressure falls the engine will rev up, engage the clutch and start driving the compressor again.
Similar thing with a custom head (just remove the valve followers) here: https://www.youtube.com/watch?v=UDonfQPgR8Y |
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metalangel |
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metalangel World Chat Champion
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smegballs |
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smegballs World Chat Champion
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mudcow007 |
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mudcow007 World Chat Champion
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stevo as b4 |
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stevo as b4 World Chat Champion
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mudcow007 |
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mudcow007 World Chat Champion
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Richy CB1000 |
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Richy CB1000 Trackday Trickster
Joined: 06 May 2012 Karma :
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Old Thread Alert!
There is a gap of 1 year, 194 days between these two posts... |
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mudcow007 |
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mudcow007 World Chat Champion
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MCN |
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MCN Super Spammer
Joined: 22 Jul 2015 Karma :
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doggone |
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doggone World Chat Champion
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mudcow007 |
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mudcow007 World Chat Champion
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Old Thread Alert!
The last post was made 8 years, 19 days ago. Instead of replying here, would creating a new thread be more useful? |
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