Hello VacuumLand! I want to start off by saying the Hoover Junior was not a bad cleaner at all. Quick disclaimer too, I obtained this scientific knowledge from an American YouTube channel named VacuumWars, just so that no one accuses me of stealing someone else's words.
The difference between a Hoover Junior and a cleaner you'd get today is that the Junior used a different type of motor, called a Direct-Air Motor. The difference between a Direct-Air (Which I'll shorten to D/A) motor and a now traditional Clean-Air motor (which I'll shorten to C/A) is that a D/A motor's design means the dirt picked up passes directly through a fan, hence 'Direct' air.
If you tried to measure airflow from a D/A motor through the floor cleaning system, you'll get big results. The only airflow measurement I understand is an American measurement (I think) which is CFM. Let's say at the floorhead you measure somewhere between 90 or 100 CFM, but when you take the belt cover, and the belt off to put a hose on, a lot of that power gets lost, because there isn't a way to block any airflow coming in from the floorhead (like with the Hoover Junior, and many other cleaners like this, but I'm only guessing) so you only measure between 20 or 30 CFM. Compare that to a now traditional upright with a C/A motor that has a built-in hose that can be took out from the floorhead, meaning that there can't be a way for air to get in through the floorhead, so airflow measurements are more equal.
I'm bringing up these facts because I hear and see comments online that the suction of a Hoover Junior or Senior (known as Convertible in the US) is 'poor'. Don't forget the D/A motor is an airflow motor rather than a suction motor. It can pick up a lot better when cleaning carpets with an agitator/brush roll than it just tries to push surface dirt from upholstery. In fact a D/A motor can get out so much more hidden dirt from deep down than a C/A motor, which is why I see carpet cleaning results from something like a Kirby vacuum beating something like the Sebo Felix. Sometimes, however, the C/A motor can have a very efficient carpet pick-up design and therefore seem to pick up everything (by the human eye), something like the Sebo Felix, even my 750w Hoover Purepower I have at home. I know this because of a dirt demonstration from the YouTube channel 'ibaisaic'.
I could go into more detail about that, but this is the wrong forum to talk about 750w purepowers. To conclude, the Hoover Junior is a good cleaner. I can just tell/assume from seeing online footage. Of course, it didn't pick up nearly as much as a Kirby vacuum, or even a Sanitaire vacuum you can get commercially in the US. But all these powerful carpet cleaners have one thing in common - they have a direct air motor.
If you have any criticisms please tell me, because I am aware of the fact that some of what I said might not be 100% accurate.
The difference between a Hoover Junior and a cleaner you'd get today is that the Junior used a different type of motor, called a Direct-Air Motor. The difference between a Direct-Air (Which I'll shorten to D/A) motor and a now traditional Clean-Air motor (which I'll shorten to C/A) is that a D/A motor's design means the dirt picked up passes directly through a fan, hence 'Direct' air.
If you tried to measure airflow from a D/A motor through the floor cleaning system, you'll get big results. The only airflow measurement I understand is an American measurement (I think) which is CFM. Let's say at the floorhead you measure somewhere between 90 or 100 CFM, but when you take the belt cover, and the belt off to put a hose on, a lot of that power gets lost, because there isn't a way to block any airflow coming in from the floorhead (like with the Hoover Junior, and many other cleaners like this, but I'm only guessing) so you only measure between 20 or 30 CFM. Compare that to a now traditional upright with a C/A motor that has a built-in hose that can be took out from the floorhead, meaning that there can't be a way for air to get in through the floorhead, so airflow measurements are more equal.
I'm bringing up these facts because I hear and see comments online that the suction of a Hoover Junior or Senior (known as Convertible in the US) is 'poor'. Don't forget the D/A motor is an airflow motor rather than a suction motor. It can pick up a lot better when cleaning carpets with an agitator/brush roll than it just tries to push surface dirt from upholstery. In fact a D/A motor can get out so much more hidden dirt from deep down than a C/A motor, which is why I see carpet cleaning results from something like a Kirby vacuum beating something like the Sebo Felix. Sometimes, however, the C/A motor can have a very efficient carpet pick-up design and therefore seem to pick up everything (by the human eye), something like the Sebo Felix, even my 750w Hoover Purepower I have at home. I know this because of a dirt demonstration from the YouTube channel 'ibaisaic'.
I could go into more detail about that, but this is the wrong forum to talk about 750w purepowers. To conclude, the Hoover Junior is a good cleaner. I can just tell/assume from seeing online footage. Of course, it didn't pick up nearly as much as a Kirby vacuum, or even a Sanitaire vacuum you can get commercially in the US. But all these powerful carpet cleaners have one thing in common - they have a direct air motor.
If you have any criticisms please tell me, because I am aware of the fact that some of what I said might not be 100% accurate.
