Coronavirus - The Thread :(

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Coronavirus - The Thread :(

So here is my MGO, it is my Covid transport at the moment (we use it for essential shopping) no point in driving the Panda a mile to the shop (OH is disabled)
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the gearbox end of the belt drive from underneath. gears are neutral forward and reverse max restricted speed is 72mph (which you can do in reverse if you had the nerve!)
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Interestingly, or not, depending on your viewpoint? There is someone in the next street who has an earlier version of one of these. It's a diesel and boy is it noisy! bears a not dissimilar comparison to a diesel engine'd cement mixer! It's unique sound signature can be heard for a good few minutes as it accelerates away up the main road! Doesn't bother me I have to say.

Talk about Deja vu! If I screw my eyelids up a bit and use some imagination, I could be looking at a DAF 46 Variomatic unit here! (which was the only one to use just one belt, at least until they started development of the metal segmented "pusher belt" CVT system - which never, to my knowledge, saw use in a production DAF? but was later to see the light of day in other makes and, of course, is in use to this day in various forms.) How does it "do" the rear suspension? The DAF went from swing arms on the earlier 33, 44 and 55 to a de Dion beam axle on the later 46, 66 and Volvo branded offerings. It was a big improvement in handling but I didn't like the later transmission system with the differential in the secondary unit as it tended to make the engine hold higher revs for longer - especially on the small 2 cylinder engines but they actually accelerated slightly slower. (or so it seemed from the driver's perspective).

Closer scrutiny of your image interests me in that there seems to be a "positive engagement" element to the design of the secondary pulley inner cone? If you look at the flange on the inner end of it's driveshaft there is an interesting "flower head" shaped cup with angled "ramps" which seems to be engaged with a spur of some sort on the moving half of the pulley? Looks to me as if that's, at least partly, how the drive is being transmitted to the input shaft of the reduction/differential unit?

Thanks so much for posting this, I've enjoyed looking at it very much. I might even see if I can find someone up here who deals in them and pop along for a look. I must admit to having had increased desires, just of late, to find a DAF 33 - or even especially a Daffodil if I could find one at a reasonable price - Wikipedia has a good bit on them if you're interested - not sure how Mrs J would view this and it would mean Becky would have to be parked in the road, Which could be a problem as they are probably going to yellow line us soon. Ah well, it's a nice wee dream to have, and we all need some nice dreams just now don't we?

Kindest regards and satay safe everyone
Jock

PS. The earlier DAF's would go as fast in reverse as forward too. I tried it once in my 44 but got far to scared as it was impossible to stop it wanting to swap ends as the speed increased. I think I bottled out at about 30mph!
 
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For a short answer and not getting into the weeds too deep.
Covid 19 is free in America.
Most emergency rooms must treat everyone, even if they do not have insurance. Even illegal alliens.

I don't have to live there my self to know what goes on i have family there also friends there who are not extremist christian gun loving redneck trump supporters. The only freedom you have under Trump is the freedom for the rich to keep the poor poor.

Them people you call alliens (i think that is spelt wrong too) are actually Humans they come from the same planet as us.
 
And we are pissing again.:rolleyes:
Isn't there a rule not allowing politics on this forum?

gr J(n)

YOU DON'T HAVE TO READ THE THREAD THERE ARE 457,896, OTHER THREADS YOU CAN READ, IF YOU DON'T LIKE THIS ONE DON'T OPEN IT.

politics controls every thing in your life from the price of fuel you put in your car to how you are cared for when you are ill, only fools and people who don't want to admit they have voted us in to the poo want to ignore it.
 
Quite agree.

Supposed to be a car forum, not a soap box for would be politicians.

Another forum I watch takes down any political rubbish and concentrates on factual helpful information at this difficult time.

Keep the vehicle info and pictures coming.

We all need some cheery stuff just now......................
 
No, it's not that simple, not looking.

I'm totally fooked off having to listen, see, hear all about coronavirus. I must be infected as I can't get away from having it rammed up my nose. When I want to read about FIATs I don't want to see the words 'Coronavirus' put onto every place I look.

For those of you who want to know, listen, talk, extol all your knowledge on the subject, great, but have your own private place to do so.

Rant over :D.

.
 
Jock here is the top down view belt is on the right.
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As the MGO is front wheel drive the rear wheels sit on a single U shaped torsion trailing arm so is semi independent. (front fully independent)
The diesel version uses a low powered Kuboto engine, although economical is limited in power/speed (45mph at most).
The UK Petrol's use Lombardini LGW523 MPI engines, economy is less than you would expect at 45mpg and only has a 3 gallon tank.
Mine will get to 60mph in 0.4 miles (2 up plus dog),so enough to keep up with the 'normal' flow of traffic, and will climb the steepest of slopes.
So, to the drive Pulleys
engine pully is fitted to a taper shaft with a fixed pully side, then under the bell housing is the moving side this is controlled by weights in plastic housings that are forced against the bell cover allowing the side to move in and out dependant on rotation speed, there is also a bearing on the shaft to allow the belt to spin when 'freewheeling' downhill without throttle as well as ensure the belt is free from the pully when selecting neutral or reverse.
The Comex Gearbox/diff end is controlled by the spring (in the middle of the petals), the greater torque and the spring is compressed allowing the inner pully side to twist and slide down the ramps, distance between pully centre is 14"
this is the same drive as used on Snow Mobiles.

The whole body is made from ABS plastic (which is why they transmit a lot of engine noise)fitted/bonded to an Aluminium crash survival frame, the floor is made from carbon fibre.
 
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Andy is an example of can not fix stupid.

Says the person who doesn’t understand syntax...

As the old saying goes once you start calling names you’ve lost your argument also any credibility you may have had, which really wasn’t a lot to begin with.


I’m with Dave on this, if you don’t like this particular thread you neither have to read it nor comment on it.

As with any discussion it dies when people no longer take part, so where is the logic in taking part in something you don’t like ?
 
Another thought,
as the MGO is a classed as a Quadricycle, at MOT time there are no emissions to worry about, the windscreen is not checked and being belt drive the brake test has to be done on a plate or a Tapley test.
The reason I bought it was I only had a Motorcycle cat license so this was ideal at the time (less than 300kg) furthest I have driven the MGO in one trip was about 400 miles.
 
Quite agree.

Supposed to be a car forum, not a soap box for would be politicians.

Every thread can flare up, as long as it doesn't go ott it's fine.

The reason I put it in the general, is because I was interested in everyone's views/outlook on it.

As someone who doesn't live in the UK, I can't really imagine what it feels like to be a part of it and wanted to find out more.

Going forward though, yes, any fighting > deleted, any rants about the government > deleted.
 
... the MGO is front wheel drive ...
The diesel version uses a low powered Kuboto engine, although economical is limited in power/speed (45mph at most).

For a few years, when I was commuting to Oxford along the A420 (Swindon-Oxford) there was a guy with one of those, a diesel, with a max speed around 42mph. In the evening peak traffic he had a queue of very angry people behind him. Sadly I met him about once a week. Luckily only met him once in the morning, when arguably time is more important and delays likely to increase anger.
So whilst he may have been making savings of some sort, he was making the road significantly less safe as others made sometimes very unsafe overtake decisions.
 
Thanks johno. I think it's very unlikely I would buy one but I'm loving the technical stuff! I know nothing about snowmobiles at all so thinking about the Primary pulley, that is the one driven by the engine, is it driven via a simple friction type centrifugal clutch from the engine or is it more sophisticated? One of the problems we used to see on the DAFs was burnt out clutches due to people holding the car on a slope with the throttle - The earlier multi finger type wasn't a particularly cheap clutch to do either.
 
You would expect to find some kind of slipper clutch, but no, the driven pulley runs at engine rpm at all times it works simply by gripping the belt at the engine/driven pully as the revs build, the metal weight inside the bell housing are thrown outwards but due to bell, slide into the bell pushing the sideplate inwards narrowing the gap and lifting the belt, as the torque comes in to play the gearbox end changes width by the spring opening the gap and lowering the belt thus maintaining a constant tension but a change of gear ratio, like a step-less derailleur on a bicycle.
to accelerate, increase revs to lower the gear ratio, when at the required speed, ease off the revs and the belt will slide to a higher gear ratio, maintaining speed but at reduced engine speed.
With only 2 main moving parts, a very simple and efficient drive system
 
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You would expect to find some kind of slipper clutch, but no, the driven pulley runs at engine rpm at all times it works simply by gripping the belt at the engine/driven pully as the revs build, the metal weight inside the bell housing are thrown outwards but due to bell, slide into the bell pushing the sideplate inwards narrowing the gap and lifting the belt, as the torque comes in to play the gearbox end changes width by the spring opening the gap and lowering the belt thus maintaining a constant tension but a change of gear ratio, like a step-less derailleur on a bicycle.
to accelerate, increase revs to lower the gear ratio, when at the required speed, ease off the revs and the belt will slide to a higher gear ratio, maintaining speed but at reduced engine speed.
With only 2 main moving parts, a very simple and efficient drive system
So the belt is not being gripped by the pulley at idle rpm because the primary pulley halves are too far apart to "pinch" the belt? Then as revs rise the pulley halves are forced together by the centrifugal weights so the friction between the belt and pulley faces then transmits drive and away you go? The rest is pretty much like the DAF Variomatic but without the vacuum override to force a high ratio to be maintained in the cruise. - Simples!

I've worked, professionally, on small/medium sized horticultural machinery and using belt slip to act as a "clutch" is quite common. A simple and cheap solution which actually works quite well.

Thanks again johno, You learn a little every day don't you, and that was my lesson for today.
 
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