Thread Number: 11062
Eureka Self-Propelled Upright Vacuums |
[Down to Last] |
Post# 119409   12/27/2010 at 20:58 (4,865 days old) by eurekaprince (Montreal, Canada)   |   | |
Checkrate/Likes
 
     
I just saw a beautiful white Eureka SP upright on eBay - it looks so great in white.
The seller posted a pic of the underside, and it got me thinking: How did Eureka do the self-propelled feature? I see some black thingy on the rear wheels of the unit, but I can't figure out how the main motor would feed propulsion to these wheels. Is there a belt somewhere that I can't see? Or did Eureka put a completely separate motor under the hood just for the wheels? And how did the on-off slider switch for the propulsion feature work? Did the wheels shift into different gears for forward and reverse? Eurekaprince would love to know all about this magic trick.... :-) |
Post# 119459 , Reply# 2   12/28/2010 at 07:33 (4,864 days old) by eurekaprince (Montreal, Canada)   |   | |
Checkrate/Likes
 
     
Wow - it sounds like you studied engineering!
Would love to see a pic of a Eureka SP vac with the hood removed.....so that I could see the whole mechanism. Interesting that these SP uprights were the only ones with a "down-facing" motor - the cogged belt must have been connected to a gear that shifted the propulsion sideways. Hmmmm.....verrrrry interesting...... :-) EPBrian |
Post# 119467 , Reply# 4   12/28/2010 at 08:36 (4,864 days old) by scvacuumguy (SC)   |   | |
Checkrate/Likes
 
     
|
Post# 119473 , Reply# 5   12/28/2010 at 10:04 (4,864 days old) by powertank ()   |   | |
Checkrate/Likes
 
     
Yeah, if I have time, I'll take pictures of mine. |
Post# 119479 , Reply# 7   12/28/2010 at 10:58 (4,864 days old) by powertank ()   |   | |
Checkrate/Likes
 
     
The Hoover drive has clutch plates that rotate in the same direction. I think the foward direction is directly coupled to one of the clutches, and reverse is coupled through gears in order to change the direction. |
Post# 119480 , Reply# 8   12/28/2010 at 11:00 (4,864 days old) by powertank ()   |   | |
Checkrate/Likes
 
     
Under the hood of a self-propelled Eureka: |
Post# 119521 , Reply# 9   12/28/2010 at 20:08 (4,864 days old) by eurekaprince (Montreal, Canada)   |   | |
Checkrate/Likes
 
     
WOW!!!!
Thank you! Thank you! Thank you Peter! Now I see why the motor hood is higher than the manual versions - they needed some height to add another horizontally-looped belt to drive one of the gears for the propulsion mechanism. Now one last question - the Hoover SP uprights seem to have motorized front wheels that have ridges that would grip the carpet well. The Eureka SP vacs propel smooth rear wheels. Wonder if these wheels would "slip" on the carpet more than the Hoover's. Any thoughts? Thanks again for taking the trouble to upload the pics - that was really great of you to do. :-) |