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Scale Model Engineering

Scale OilPull Build - About 3/8 Scale of a Heavyweight


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  #1  
Old 05-11-2018, 04:08:21 PM
decoy64 decoy64 is offline
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Default Scale OilPull Build - About 3/8 Scale of a Heavyweight

Hello All-

I am starting on a scale OilPull Build. Attached below are a couple of 3D Solidworks renders of what I am kind of thinking. I "borrowed" several construction ideas from wagswitte's two builds. This is just a rough pass at the design. It will probably morph quite a bit over the course of building the model. I will either be using a 4hp Cushman binder engine, or a 1 1/2 HP IHC M for the engine, depending on which one fits better. I do plan on building a semi-replica of the Rumely E clutch to use on this. If I use the M, I will remove the magneto side flywheel and replace it with the clutch. That's what I have shown in the model.

I will be using the 3 speed high/low rear end out of a Wheel Horse garden tractor.

Please let me know what you think. Should be making some progress on it this weekend. Picking up channel iron and square tube on the way home from work.

If anyone has any good ways to form the wheels without me having to pay someone to make them, please let me know.

-Griffin
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Old 05-11-2018, 04:13:42 PM
decoy64 decoy64 is offline
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Default Re: Scale OilPull Build - About 3/8 scale of a heavyweight

Couple of quick renders of the clutch design.
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Old 05-11-2018, 11:55:04 PM
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Default Re: Scale OilPull Build - About 3/8 scale of a heavyweight

Looks like a great project. One thing that might help you. The Model E clutch had 3 shoes like you've shown. The Model G and smaller tractors had a 2 shoe clutch. It would save you some machining time.
Keith
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Old 05-13-2018, 11:40:29 PM
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Default Re: Scale OilPull Build - About 3/8 Scale of a Heavyweight

Good call on the clutch. I am still undecided as to whether I will go with 3 or 2 shoes.

In the meantime, I got started on the frame this weekend. I tend to get really into projects like this. Made quite a bit of progress over the last couple of days. Got the main part of the frame fabricated, and the transmission halfway figured out. Only problem is that when I drilled the holes for the transmission mounting bolts, I measured multiple times, and still somehow managed to mount it almost 3" too low

I guess I get to re-do that, but everything else is moving along nicely.
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Old 05-14-2018, 05:04:44 PM
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Default Re: Scale OilPull Build - About 3/8 Scale of a Heavyweight

You can look around for large diameter pipe to cut the wheel bands from, you might get lucky and find some for scrap price.
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Old 05-14-2018, 08:35:15 PM
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Default Re: Scale OilPull Build - About 3/8 Scale of a Heavyweight

Keep posting pictures of your progress, cant wait to see your project finished, know once i get started on something its hard not to stop. Look likes its going to be a good one👍
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Old 05-14-2018, 08:55:39 PM
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Default Re: Scale OilPull Build - About 3/8 Scale of a Heavyweight

I sure hope so...

Didn't really get anything done today, other than fixing my screwup with the transmission height. No pictures tonight. It may be a few days before I get to do much more on this. Going out of town for work tomorrow, and probably have to do some stuff in the yard on Wed. Hopefully I can get back to it later in the week. I think I will tackle the rear platform next. Need to call a couple of sheet metal shops here in town that do work for my work... See if I can pull some strings on getting the outer bands for the wheels
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Old 05-14-2018, 09:08:39 PM
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Default Re: Scale OilPull Build - About 3/8 Scale of a Heavyweight

Not to put your project on hold or anything, but you might want to get your wheels made before dialing in the transmission height.

Although I guess you could adjust the pivot location on the front axle mount if need be to get it setting level too if your wheels end up being different diameters than what you originally planned.

I like your 3D Solidworks renderings.

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Old 05-15-2018, 06:55:50 AM
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Default Re: Scale OilPull Build - About 3/8 Scale of a Heavyweight

I know withe the two Oil Pulls and the 8-16 that i did i started with the wheels first, kind of gave me an idea of how big to make it, of course i didnt have any drawings to go by kind of went off the top of my head, i didnt have my wheels rolled a frien of mine works at a place that makes air and propane tanks so he got what i needed all i did was make the hub and spokes, if you need any advice if i have any to give PM me and ill give you my number, but im sure you probably have it figured out in your mind already, its 90% thinking and 10% doing. Lol
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Old 05-15-2018, 09:53:34 PM
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Default Re: Scale OilPull Build - About 3/8 Scale of a Heavyweight

I'm not too worried about that. I have the back wheels planned at 32" If I can't find anything, I will just have them made by the guys at work, or at one of our "usual suspects" for that sort of thing. Sometimes working for a fab shop and custom engineering company pays off

Didn't get a chance to work on it at all tonight. Hopefully I will later this week.
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