Wheel Interchange?


Information and questions on GL1000 Goldwings (1975-1979)
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El Taco
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Motorcycle: 1977 GL1000

Wheel Interchange?

Postby El Taco » Mon Oct 01, 2012 7:46 pm



I'm tempted to try to haul a 75 GL1000 back from Odessa. My setup pulls the bike on the rear wheel. Will the Comstar from a 78 bolt on and go?



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dingdong
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Re: Wheel Interchange?

Postby dingdong » Tue Oct 02, 2012 7:12 am

No can do. Not possible to haul a goldwing on the rear wheel because of the internal tranny. Engine not running no lubrication to gears.
Tom

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WingAdmin
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Re: Wheel Interchange?

Postby WingAdmin » Tue Oct 02, 2012 8:53 am

dingdong wrote:No can do. Not possible to haul a goldwing on the rear wheel because of the internal tranny. Engine not running no lubrication to gears.


What he said. The transmission uses engine oil for lubrication, if the engine isn't running, there's no lubrication for the transmission - which will be spinning, because the rear wheel will be turning.

Well, it's certainly possible, but don't expect to be able to use the transmission in the bike afterward. Oh, and plan to disassemble the engine afterward to clean out all the metal debris from the failed bearings. :)

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El Taco
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Re: Wheel Interchange?

Postby El Taco » Tue Oct 02, 2012 11:10 am

Didn't seem to bother the '77, nothing even got the slightest bit warm during or after a five hour drive. Also, take into consideration that the sump is at an angle, all the oil runs back into the transmission.

I checked the trans out last night, no shifting issues that I could tell.

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scotterichmond
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Re: Wheel Interchange?

Postby scotterichmond » Tue Oct 02, 2012 4:05 pm

can you turn it around and have the front on the ground?

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El Taco
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Re: Wheel Interchange?

Postby El Taco » Tue Oct 02, 2012 10:31 pm

Hard to say. The thing works on the premise that the bike is tied down by the front wheel and the bars, and it pivots at the steering head. Other than your typical wheel removal, a set of snap ring pliers will remove the pinion adapter from the driveline, thus disconnecting the drive completely. So long as the final has oil, it should be fine.

I'd still like to know if the Comstar wheel will bolt up. I avoid them like the plague, but when I've got an excellent tire on one, it's hard to pass up. Especially for just a tow.

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Fred Camper
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Re: Wheel Interchange?

Postby Fred Camper » Thu Oct 04, 2012 8:11 pm

I am pretty sure the Comstar will go on. Not sure if the brake will give any issues, but I have seen folks go back and forth just not sure what workarounds they do. Seems pretty minor. The speedo drive is an issue for the front wheel, but you are only talking about the back it seems.

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portugeezer
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Re: Wheel Interchange?

Postby portugeezer » Fri Oct 05, 2012 9:27 am

Why even chance it? U Haul rents bike trailers for $20 a day

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El Taco
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Re: Wheel Interchange?

Postby El Taco » Sat Oct 06, 2012 6:36 pm

[quote="portugeezer"]Why even chance it? U Haul rents bike trailers for $20 a day[/quote]


You fail to understand how incredibly cheap I am. The tow bar, I built for free. I have about $20 tied up in straps. I can use this again and again, and since building it, I have. It first pulled a CB750 into town, didn't have to bother with a trailer, lights, or tags. Next, I bought a GL1000 for $100, towed it across town and left it where it presently sits. Afterwards, I barred my '77 GL1000 from Odessa Texas to Alamogordo New Mexico, with no noticeable problems. Should any arise, they'll be far away in the future, because that motor is under the bench for parts, having been replaced by the '78 I bought in Alamo, also for $100, also hauled home on the tow bar. Around town I'm sure it will be fine.

Thing is, at times, I have a lot to do with motorcycles. It's awful convenient to have my own moving apparatus. At one time I had over fifty bikes, and I stopped counting at that point. I then sold a bunch and scrapped most of the rest, leaving me with about twelve or fifteen. I still don't bother counting. In Odessa I can borrow a trailer and move six at a time, but not so in New Mexico.

Rather than buy a set of head gaskets and pull my heads for inspection, I bought another bike with a motor that turned. I'll make whatever gaskets I don't absolutely have to buy, and you'd be surprised at the details I can duplicate. With three parts bikes, sand paper, compound, paint, grease, and carb cleaner, I'm at a little less than $300 invested, and my pictures thus far can be seen on this board.

I can assure you that if I can make it, I won't buy it, and if it means pulling the final to remove a snap ring for a five hour drive, it's worth not spending $20 to rent a trailer. Fuel economy is better, too.

In response to other concerns, the final drive splines were my primary point of inquiry. If people go back and forth, I'm sure they are the same. I'm sure the axle is the same length and diameter, and should the caliper cause a problem, I'm sure I could disassemble it so it would serve as a spacer for moving purposes. Otherwise, I could carry my late model caliper just in case.

Yep, I'm that cheap. Thanks for the replies, y'all.

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SteveB123
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Re: Wheel Interchange?

Postby SteveB123 » Tue Oct 09, 2012 6:05 pm

WingAdmin wrote:What he said. The transmission uses engine oil for lubrication, if the engine isn't running, there's no lubrication for the transmission - which will be spinning, because the rear wheel will be turning.


I'm under the impression that most (if not all) manual transmissions use splash lubrication, not pressure.
Current:82 GL1100 Interstate, 60 Amp Poorboy, MSD coil
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El Taco
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Re: Wheel Interchange?

Postby El Taco » Tue Oct 09, 2012 8:16 pm

Also, the transmission is swimming in the oil, considering it's under the rotating assembly, which is technically the sump.

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scotterichmond
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Re: Wheel Interchange?

Postby scotterichmond » Wed Oct 10, 2012 1:45 pm

since you have done it before I am sure you will be fine, but have you seen this:
( here is a link to a drawing of the oil system. looks like the gears might be above the oil level).


http://sdrv.ms/SMfbtB

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WingAdmin
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Re: Wheel Interchange?

Postby WingAdmin » Wed Oct 10, 2012 1:57 pm

Here's that image for people who can't get it from that link. Notice the pressurized oil feed through the center of the transmission shafts. That oil flow exits through orifices on the shaft to lubricate various transmission parts.

Oil Flow
Oil Flow

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El Taco
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Re: Wheel Interchange?

Postby El Taco » Wed Oct 10, 2012 7:51 pm

Considering all the mess I'm going through, it'll be worth it, in my opinion, to remove the pinion adapter on long trips with the bar.

The transmission that took the long ride is under the bench, and I won't be using it as that engine is locked up.

I'm sure dragging one across town would be fine, though.




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