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Drum Sander #4: Pause for thought

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Blog entry by BritBoxmaker posted 1535 days ago 1695 reads 5 times favorited 10 comments Add to Favorites Watch
« Part 3: Zen and the art of Bandsaw Drum part making. Part 4 of Drum Sander series Part 5: Result! »

Hello all. Been a mixed day today. Pist that I have a problem deciding how to mount the motor. My old motor doesn’t have feet along its side, as in the design. Its only mounting points are on the end where the spindle emerges. I’ve discussed this at length in the comments of the last blog entry with Autumn and jm82435 (thank you both for your valuable input) and I’ve decided to take this offline and have a major think.

So how to pick myself up. Well the drum glue-up went well. Its solid and none of the discs move independantly. Here it is back on the framework

The belt is in position ready for the motor (yeah as and when).
Decided to do some running repairs on the pulley sets. Both of which suffered a bit when I ‘removed’ the motor from its previous home. JB weld to the rescue. I’ll clean them up, tomorrow, when its good and solid..


The rest of my shop time today was dedicated to making the height adjuster. A veritable banquet of mixed imperial/metric dimensions as the bolts and threaded rod are european and I’ve cut the wood to imperial sizes. Ho hum. Here it is

Its pretty much as in the destructions except I’ve made the adjustment wheel circular, with ten indentations. There is method in my madness. The 20mm threaded rod has a screw pitch of 2.5mm (1/10”). Each indentation is 1/10th of a rotation of the wheel. So each notch is 2.5mm / 10 = .25mm (1/100”), clever eh.
Well I got dragged out to a quiz evening at our local pub so no more for today. See you all anon.

-- Martyn -- Boxologist, Pattern Juggler and Candyman of the visually challenging. http://www.theartofboxes.com



10 comments so far

View patron's profile

patron

12976 posts in 1944 days


#1 posted 1535 days ago

just lay it on the floor ,
and lay over it ,
that’s how i would mount it (LOL) !

sorry i’ll go back and read the rest now ,
i just couldn’t resist !

-- david - only thru kindness can this world be whole . If we don't succeed we run the risk of failure. Dan Quayle

View BarbS's profile

BarbS

2433 posts in 2689 days


#2 posted 1535 days ago

Ah Patron, that was b-a-d. Really bad.
I’ve no experience mounting a motor, but beware the ideas of the amateur: is there a way you could suspend it from a drop-down frame? I know vibration is always the issue. Maybe, build upward for a solid cradle arrangement and strap it tight. There’s gotta’ be a way. Now you have all of us thinking about your motor. And that darn Parton and his imagery.

-- http://barbsid.blogspot.com/

View Dennisgrosen's profile

Dennisgrosen

10850 posts in 1718 days


#3 posted 1535 days ago

looks good Martyn

as I cuold see from the first picture canĀ“t you simply just mount it
the same way the mount a generator in a car,pivo on a axel

View patron's profile

patron

12976 posts in 1944 days


#4 posted 1535 days ago

sorry barb ,
just loose imagery , ( from the Rorschach tests ), it’s the only way they would let me out !

how about some corner brackets that go to the motor mount points .
or some chocks under it ,
that it cradles in , and a band that can be tightened down ?

-- david - only thru kindness can this world be whole . If we don't succeed we run the risk of failure. Dan Quayle

View Jimi_C's profile

Jimi_C

506 posts in 1838 days


#5 posted 1535 days ago

I would just make an L out of two pieces of wood with 45 degree braces for support, and mount the motor into the vertical part, and then mount the horizontal part to the frame per the instructions. For additional support, you could make some half-circles for the motor to sit on and use some metal straps or some other method to make sure it doesn’t move on you.

-- The difference between being defeated and admitting defeat is what makes all the difference in the world - Upton Sinclair, "The Jungle"

View SPalm's profile

SPalm

4760 posts in 2485 days


#6 posted 1535 days ago

I was thinking like Dennis. Mount like in a car. Maybe drill and tap a few more holes into that really thick blue plate.

But then again, a wooden cradle swinging on a hinge with a band strap to hold it in sounds like a good easy start. Just allow for some ventilation.

I’m sure you will do us all justice,
Steve

-- -- I'm no rocket surgeon

View dlmckirdy's profile

dlmckirdy

195 posts in 1736 days


#7 posted 1535 days ago

The blue plate mounted on the pully end looks as though it has a pivot bearing/bushing. What about duplicating the plate for the other end (are there any mounting holes like what the plate is attached by down there)? Then you could hang it by a rod placed through the pivot holes, and use the weight of the motor for belt tension. If you need more tension, a spring loaded tension rod could be added which cradles against the motor case and attached with a pivot bracket to the bottom of the framework.

I’m watching this closely – I’m thinking of building one of my own.

-- Doug, Bakersfield, CA - I measured twice, cut it twice, and it is still too short!

View BritBoxmaker's profile

BritBoxmaker

4340 posts in 1639 days


#8 posted 1535 days ago

Thank you all for your time, humour and excellent suggestions. I’m sure I will get it licked just need some time, thought and maybe a little experimentation.

Martyn

-- Martyn -- Boxologist, Pattern Juggler and Candyman of the visually challenging. http://www.theartofboxes.com

View Cozmo35's profile

Cozmo35

2198 posts in 1639 days


#9 posted 1534 days ago

A wood worker AND an engineer! WOW! What a talented guy!

-- If you don't work, you don't eat!.....Garland, TX

View BritBoxmaker's profile

BritBoxmaker

4340 posts in 1639 days


#10 posted 1534 days ago

Well not to boast. I originally trained with the MOD (DOD) in electronics and spent a lot of my first year in a mechanical workshop. Theres not a lot you can’t do with a drill, a hacksaw and a file if you know how. Nowadays I just subvert society by ‘making things’.

Martyn

-- Martyn -- Boxologist, Pattern Juggler and Candyman of the visually challenging. http://www.theartofboxes.com

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