Author Topic: 1/2 scale gade  (Read 26526 times)

Offline Ken K

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Re: 1/2 scale gade
« Reply #15 on: July 29, 2013, 09:47:16 PM »
 Made the governor collar, from bar stock, showing all the steps, but the boring one, because of 8 picture limit. As there is parting work, in this part, used 1144  because it cuts well.
 Steps: Center drill, drill, bore( Not shown), ream, cut OD, cut step, and groove, part off, face, and finished part.

Offline Ken K

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Re: 1/2 scale gade
« Reply #16 on: July 31, 2013, 09:19:21 PM »
 Square the ends of bearing cap, and cut to 3/4" thick.
 Spot face were hole go, and drilled hole for hold down bolts.

Offline vcutajar

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Re: 1/2 scale gade
« Reply #17 on: July 31, 2013, 10:02:59 PM »
Love all your photos Ken.  For somebody like me with limited experience, they are very helpful.  Thanks.

Vince

Offline Don1966

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Re: 1/2 scale gade
« Reply #18 on: August 01, 2013, 01:08:26 AM »
Hi Ken just read your thread and I also like your photos. That is some beautiful work.

Don

Offline Dave Otto

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Re: 1/2 scale gade
« Reply #19 on: August 01, 2013, 01:30:19 AM »
Lookin good Ken!

Thanks for the updates.

Dave

Offline Ken K

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Re: 1/2 scale gade
« Reply #20 on: August 01, 2013, 08:00:57 PM »
Started on the flywheels.
 Put in 4 jaw, using hub the center flywhheel. Cut hub to 1.5", faced to length, and cut outer rim
flat. Did the steps to get .625" hole for crankshaft. Turned  over and faced, other side of hub, to
thickness.
 After I get key ways cut, plan the use 5/8" stub shaft, to complete the cutting. With thicker
flywheel this works most of the time, but because of the cutting speed, you some times get
chatter, Cutting speed on outside of 9" fly wheel is, Pie X diameter X RPM, or 9" X 3.14 X 78,
min. lathe RPM = 2204+ in per min. surface speed. Lot higher then 900 in/min, listed in cutting
speed table
 If I get chatter on out side rim, you can file it off, but to cut the inside flanges, it will have to be
held, in 4 jaw, if there is chatter..

Offline NickG

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Re: 1/2 scale gade
« Reply #21 on: August 02, 2013, 04:09:15 PM »
Nice one ken, it is a fair sized flywheel, was just thinking the other day although
My lathe would swing 9" I wouldn't be able to grip with outside jaws. I can get down to 34 RPM though which would help.

Offline Jasonb

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Re: 1/2 scale gade
« Reply #22 on: August 02, 2013, 05:05:08 PM »
Nick you can always hold by the inside of the rim which is my prefered way or use a faceplate, in both cases this allows you to do the face, edge, hub and bore all in one setting then just flip it tound to do the otherside, here is a 10.1" flywheel on my 11" lathe


Offline NickG

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Re: 1/2 scale gade
« Reply #23 on: August 02, 2013, 06:20:58 PM »
Seems obvious now! Did you have any trouble getting it straight without anywhere to sit back against? Can imagine it being difficult to clock for that at the same time as concentricity. Or did you use something in tool post to gently nudge it before tightening fully?

Offline Jo

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Re: 1/2 scale gade
« Reply #24 on: August 02, 2013, 06:32:38 PM »
Jason ? :LittleDevil:

I normally bolt mine to a faceplate and put packers behind, but all of my flywheels (so far  :naughty:) have been lost on an 18" face plate  :ThumbsUp:

Jo
Enjoyment is more important than achievement.

Offline Jasonb

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Re: 1/2 scale gade
« Reply #25 on: August 02, 2013, 07:57:34 PM »
Nick, rather than take Ken's thread off track any more I'll cover the flywheels in detail in my 1/3rd Galloway thread

J

Offline Ken K

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Re: 1/2 scale gade
« Reply #26 on: August 02, 2013, 08:37:38 PM »
   Laid the block out. I do not have a big surface plate, so I use the top of table saw.
 The only area that was not above the called for dem., was the total width, between the bearings.
The dem. for that area were listed as “TYP”, or “REF”, so must not be important.

Offline Ken K

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Re: 1/2 scale gade
« Reply #27 on: August 03, 2013, 02:48:37 AM »
Now that the block is laid out, caps are drilled, super glue them to block, drill the block, and
thread holes, I used 1/4-28 not 1/4 20, as plans call for as they are easier on old hands, bolt them
down, and cut outside of bearing area. I took just enough to clean up, the casting, as this area was
a little below target width.

Offline Ken K

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Re: 1/2 scale gade
« Reply #28 on: August 03, 2013, 06:44:57 PM »
Have a way I test the fit of the gears, show that later, so I have to get the shaft/bearings made for
the driven gear.
 The plans call for a 5/8" X ˝" X 1.5" long bushing to be pressed into driven gear. Then 2, ˝" X
3/8" X 3/4 long bushings pressed into it. Kit had the ˝" bushings, but had to order 5/8"bushing.
 The shaft is just some lathe/drill work, with a slot for the governor trip. The .187  X .4 deep, slot
I do different them most people, I use the CNC mill.
 How you make a part, depends on you equipment, training, & etc. As long as you get a good
part, who cares. Just have fun, making it!

Offline Ken K

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Re: 1/2 scale gade
« Reply #29 on: August 06, 2013, 04:51:47 AM »
 Started working on the head. Due to the long arm, on head, to hold rocker arm, a fixture is needed to hold it in 4 jaw. 1. Face off areas for mounting holes. Drill and tap holes for 10-32 threads. 2. Suned glue head to AL plate, and transfer holes. 3. Fixture in 4 jaw. 4. cut face flat, and then the 1.747" diameter 1/16" step, called for.5. Now that the bottom of head is flat, drill, and ream for valves.

 

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