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Re: (ET) Leaf vacuum attachment



Just a couple of thoughts on balancing things like blades and turbines.  I haven't tried this on an EZ Rake turbine yet, however I would think that a lawn mower balancer, (the small cone on the pivot base type) would balance a turbine assembly just as well as it does a lawn mower blade.  Same rules apply:  insure that there is not ANY debris and or rust on the object to be balanced.  (I would probably soda blast it to get into the nooks and crannies).  The one issue might be the location of the keyway in the turbine hub.  For this I would cut a length of key stock and grind/file/machine one end so that it is the same depth as the keyway, (as if there were no keyway in the hub while you are trying to balance it).  The really tricky part is likely to be whether to add or remove weight from a particular blade to obtain a level plane.  Detecting the need to remove weight would consist of spot drilling holes of the appropriate size on the outside edge of an impeller blade in order to remove a bit weight while not drilling completely through it.  Conversely to add weight you might put a spot or two of weld on a blade.  This may be better than the removal technique in that if it is too much you can always grind some off.  And then you may find that the thing is very well balanced just as it is!

Chris Weinreich

On ‎Sunday‎, ‎August‎ ‎11‎, ‎2019‎ ‎02‎:‎02‎:‎33‎ ‎PM‎ ‎CDT, Chris Zach <cz alembic crystel com> wrote:


Hi Charlie!

Thanks for the reply. So it's 6 inch tubing and not 8 inch, where did
you get your tubing and what kind of adapter worked for the Elec-trak
deck? I have a spare shell here, and one of the reasons I am fixing all
these broken mower motors is because I want to build it as the vacuum
deck (my mail deck has the rear discharge baffles, this one has no baffles)

The attachment is pretty nice: It goes into the stabs and then has a
connection to the tongue and another tongue coming out the back of it
for the trailer so it won't hang up. Pretty clever.

Hopefully I will have a pretty balanced impeller, I just put it together
and was going to try it out at 36 volts on the tractor. We shall see
what happens.

For the trailer I think I'm just going to build a wooden scaffold and
secure it with deer netting for the first year, then think of something
a bit more permament if it works. This really is only going to be used
for a season, so I'd like something that can quickly break down for storage.

Also I dragged my E15 hulk out of the back weeds and am going to put it
together again. It's been about 2 years since I used it, so we'll see
how much of a mess it is. Anyone know what size rivets to use to secure
the front side battery box plates to the aluminum grill and such?

C

On 8/11/2019 11:31 AM, Charlie wrote:
> I've been off grid for a few weeks, and I'm just reading about your
> project now.   Go Chris!
>
> I had to build the stab-mounted rear frame from vague pictures, and it's
> an important piece.  Steve Naugler mounted the blower on the back of his
> E15 without it, but I didn't like the cart grinding against the blower
> housing on turns.  I'm glad Harold was able to find you one.
>
> I'm using 6" (I think!) wire reinforced transparent hoses which makes it
> theoretically easier to spot clogs (which I haven't had) and lets me
> monitor the flow of chopped leaves at a glance.  The hose runs from the
> front mower deck along the right side of the tractor and up over the
> rear fender and has very little ground clearance but doesn't drag. 
> Works GREAT, but would probably be even better with a belly mower.
>
> My big leaf collection trailer is pretty rusty and I'm planning to cut
> the cap/hood down to fit my slightly smaller cart and scrap the big
> one.  The big one holds vast quantities of chopped leaves, but I'm tired
> of having two carts cluttering up the stable... I have to drag
> everything out to work on my casting foundry.
>
> The chopper turbine blade is very heavy, and the better balanced it is,
> the happier you will be, I think. Vibration is an issue, and noise too.
> I strongly recommend you spend some extra time on careful balancing
> (although I haven't any techniques to share, Steve did mine).
>
> --Charlie
>
> On Wed, Jul 31, 2019, 9:33 PM Chris Zach <cz alembic crystel com
> <mailto:cz alembic crystel com>> wrote:
>
>    Ok, I think I have a good clue. Goska linked to a post about the
>    bearings which states that the drive motors used 6203 and 6205
>    bearings.
>    RJ sent over a PDF document which showed the breakdown of the motor
>    types.
>
>    It looks like this is an e10M motor which uses the same bearings as the
>    large mower motors. I can tell this because unlike the E8M motor this
>    one has the armature go all the way to the fan attachment. So according
>    to the PDF, this motor uses the 1007 and 1008 bearings.
>
>    So if the right bearings are 6203 and 6205 bearings then I should just
>    buy a case of them and swap out the bearings on my older deck motors
>    and
>    this one. Then on to the next problem.
>
>    Chris
>
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