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My Detroit sandrail/pleasure craft... or "Carmela's Concession"
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heywebonya
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PostPosted: Mon Jul 09, 2018 10:54 am    Post subject: Re: My Detroit sandrail/pleasure craft... or "Carmela's Concession" Reply with quote

Dennis,

Before you remove anymore material. Spray the inside areas (along the areas of concern) with some black spray paint.

Fit your flywheel to one of your engines and try fitting it in the transmission. You should be able to quickly identify the high areas (the paint will be scraped off) The primary areas to remove are near the bolt holes.

I am concerned you may be removing too much material. It only took me 15 minutes to do my case. (I have done it twice)
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dustymojave
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PostPosted: Mon Jul 09, 2018 11:32 pm    Post subject: Re: My Detroit sandrail/pleasure craft... or "Carmela's Concession" Reply with quote

I've found a rotary burr in my drill motor to work well and take, as webonya said, about 15 minutes. A sanding drum in a drill motor will also work well.

Just be careful with the grinding dust. It's HIGHLY flammable and you CAN'T put it out!!!
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Bashr52
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PostPosted: Tue Jul 10, 2018 5:19 am    Post subject: Re: My Detroit sandrail/pleasure craft... or "Carmela's Concession" Reply with quote

Old school way to do it is align the engine with the input shaft, get it started on the floor, and slowly push it in and let the flywheel clearance itself Laughing
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dennismcd707
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PostPosted: Tue Jul 10, 2018 9:45 am    Post subject: Re: My Detroit sandrail/pleasure craft... or "Carmela's Concession" Reply with quote

15 minutes? AAaarrrgggg, I won't remove any more material until I paint the suspected areas, attach one of my engines to a flywheel......and then mate and spin. After all the grinding that I've done, I've got to be pretty close. Thanks guys. Laughing
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dustymojave
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PostPosted: Tue Jul 10, 2018 2:15 pm    Post subject: Re: My Detroit sandrail/pleasure craft... or "Carmela's Concession" Reply with quote

dennismcd707 wrote:
15 minutes? AAaarrrgggg, I won't remove any more material until I paint the suspected areas, attach one of my engines to a flywheel......and then mate and spin. After all the grinding that I've done, I've got to be pretty close. Thanks guys. Laughing


So you're telling us that you have WAAAYYYY more than 15 minutes into this already? Rolling Eyes

Cool
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dennismcd707
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PostPosted: Thu Jul 12, 2018 9:38 am    Post subject: Re: My Detroit sandrail/pleasure craft... or "Carmela's Concession" Reply with quote

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.... I've still got work to do in order for this to work. Just minor twists and turns in order for the two to mate successfully on my workbench, which takes a little bit more time than I had this morning out in the garage. I'm using the engine with the stripped threads in the crank as my flywheel 'guide', and I also couldn't get the flywheel mated with the crank (tight dowels) .....close enough so the flywheel isn't sticking out farther than it should.

Plus, I've got a new Scat glad nut that is .250 longer than stock, but apparently I don't have a socket that will fit it. Another set back in just trying to mate the two components. All of this takes time, and I should probably tackle this on Saturday. It sucks working afternoons. I can only work/play until around noon, then everything stops.......... so I can go to work.

Just thought I'd post my progress so far....... with the new "plan" in motion.
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dennismcd707
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PostPosted: Sat Jul 21, 2018 11:19 am    Post subject: Re: My Detroit sandrail/pleasure craft... or "Carmela's Concession" Reply with quote

Well, as usual, it's not working out as planned. In order for this process to work correctly, the flywheel should not be misaligned or cocked in any way. And that's where the problem begins.

In order to mate the trans to the engine, while sitting on my bench, the two components must both be sitting at the same height. At the same height, the lower engine mounting studs should line up with the matching holes in the trans. Well, naturally it's off a little, but I twist and turn and manipulate everything a bit and start fastening the nuts.

As I said, in order for this process to tell me where I need to grind, the flywheel has to go into the transmission perfectly straight. If it's not straight, then when I turn the flywheel, it starts marking my painted surface, but not in the correct spots. The flywheel isn't perfectly straight.......it's cocked a little bit, so it marks where it's hitting, not where I still need to grind.

Ok, I'm running out of ideas, so I decide to just draw the two components together.......slowly, by tightening all the bolts and nuts. This will at least ensure that the flywheel is going in straight. Unfortunately, as I tighten the trans to the engine, mating the two components, I can't turn the flywheel at all, and if I can't turn it, the process isn't working.

My next idea is to mount the clutch assembly onto the flywheel, and then slide everything onto the splined transmission main shaft. This should tell me if I still have clearance issues, right? This sure seems like a lot of work, but I'm happy to do it............if I get results.

I tell ya, this has got to be the longest 15 minute grind job I've ever attempted. Here's a few photos of my current dilemma. By the way, I never tightened it completely down, drawing the two completely together. I figured if I can't turn the flywheel, why continue? Does anybody have any suggestions?


Image may have been reduced in size. Click image to view fullscreen.

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Dark Earth
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PostPosted: Sat Jul 21, 2018 11:32 am    Post subject: Re: My Detroit sandrail/pleasure craft... or "Carmela's Concession" Reply with quote

Can you measure the distance from the transmission input shaft center to the pads you want to grind ? The total diagonally will be the flywheel diameter.

Edit: Or maybe slide the gland nut on the transmission input shaft and set the flywheel on it, while still supporting most of the weight, to get an idea of how much more you need to grind.
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dennismcd707
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PostPosted: Sun Jul 22, 2018 4:36 am    Post subject: Re: My Detroit sandrail/pleasure craft... or "Carmela's Concession" Reply with quote

That's a measurement that I can't make accurately, and if I can't trust the numbers, they do me no good. I'll try your second option, that might work, although that's a lot of weight for the input shaft to support. I suppose if I were to attach the clutch assembly to the flywheel and tried to slide that on the trans input shaft, that's a whole lot of weight also. Oh well, I'm just thinking out loud here. I have to try something.
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PostPosted: Sun Jul 22, 2018 8:31 am    Post subject: Re: My Detroit sandrail/pleasure craft... or "Carmela's Concession" Reply with quote

You've probably already seen this video


Link


Here's the "after" picture of his transmission. I've never done this job myself, but maybe you'll see something helpful in the pic.

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PostPosted: Mon Jul 23, 2018 5:15 am    Post subject: Re: My Detroit sandrail/pleasure craft... or "Carmela's Concession" Reply with quote

If you had a flywheel with a clutch and disc installed, you could use that as a template over the input shaft. It would be a ton easier than trying to slide the engine on and off all the time.
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dennismcd707
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PostPosted: Wed Aug 01, 2018 10:08 am    Post subject: Re: My Detroit sandrail/pleasure craft... or "Carmela's Concession" Reply with quote

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Image may have been reduced in size. Click image to view fullscreen.


The trans will now accept a 12 volt flywheel. Like everything else I do on this thing, this step took me way longer than I expected. Oh well, now it's on to assembling the trans back into the rail, and then attach the axles and axle tubes.
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Dark Earth
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PostPosted: Wed Aug 01, 2018 10:39 am    Post subject: Re: My Detroit sandrail/pleasure craft... or "Carmela's Concession" Reply with quote

Nice work !! Applause

I'm glad you took your time and did it right instead of butchering the trans.
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heywebonya
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PostPosted: Wed Aug 01, 2018 12:30 pm    Post subject: Re: My Detroit sandrail/pleasure craft... or "Carmela's Concession" Reply with quote

Good job, keep at it!
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nshaddox
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PostPosted: Tue Aug 14, 2018 10:41 am    Post subject: Re: My Detroit sandrail/pleasure craft... or "Carmela's Concession" Reply with quote

nice work dennis, looks like you might be able to drive it soon!
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heywebonya
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PostPosted: Wed Aug 15, 2018 7:47 am    Post subject: Re: My Detroit sandrail/pleasure craft... or "Carmela's Concession" Reply with quote

Updates?
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dennismcd707
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PostPosted: Wed Aug 15, 2018 8:21 am    Post subject: Re: My Detroit sandrail/pleasure craft... or "Carmela's Concession" Reply with quote

It's slow goin' over here. I've been working on my garage lately doing soffit and fascia repairs. Once that's done, along with the never ending work in my yard, I can focus on the rail. As far as driving it soon, no way. I don't know what I'm doing, and I still have a lot to do. I still visit theSamba regularly and visit my usual forums, which in turn gets me to thinking about my rail. Wink Honestly, I'm working on my rail all the time in my head. Too bad that doesn't net results!
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