Alternator on oldwing

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dontwantapickle
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Re: Alternator on oldwing

#16

Post by dontwantapickle »

I don't know and can't definitively say because I have never ridden a bike without a rotor.

With questions like this... everyone of us has an idea and an opinion, but the ones backed up with actual numbers are
the only ones actually valid. Everything else is a guess.
I'd bet that there are some math geniuses out there with the talent to calculate the actual effects. (it ain't me)

This topic is especially interesting to me as I have been seriously weighing the pros and cons of removing all that stuff from
one of my race engines and trying to free up some h.p.
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Rednaxs60
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Re: Alternator on oldwing

#17

Post by Rednaxs60 »

Here are some internal photos of the stator/rotor install:
This picture shows the stator secured to the rear cover - stationary - held in with three bolts
This picture shows the stator secured to the rear cover - stationary - held in with three bolts
Old Stator installed in Engine Rear case.jpg (379.54 KiB) Viewed 502 times
This picture shows the rotor attached to the alternator drive unit.  The rotor houses the starter clutch in the rear of the rotor.
This picture shows the rotor attached to the alternator drive unit. The rotor houses the starter clutch in the rear of the rotor.
Rear Engine Case off and Stator Out 1.jpg (132.12 KiB) Viewed 502 times
You can see the rotor bolt that you use to turn the engine. The bolt is turned clockwise, and the engine turns counterclockwise, or a slooking from the front of the negine - the rotor bolt turns counterclockwise, the engine turns clockwise.

Can't use the engine with the rotor installed. You can use the engine with the stator removed.

I have the alt mod installed. The alternator is designed to turn clockwise as viewed from the front of the bike. I have read that there are alternators that turn in a counterclockwise rotation.

This is the finished install of the alt mod on my '85:
Alt mod install final
Alt mod install final
Alt install with belt 2.jpg (386.47 KiB) Viewed 502 times
These are the bracakets I made from 1" angle, lots of hack saw and file work, and had welded at a local welding shop:
Top and bottom alt bracket
Top and bottom alt bracket
Brackets.jpg (72.15 KiB) Viewed 502 times
The crank pulley is from an early model Honda Prelude power steering pump. The alternator pulley can be changed as needed to get the ratio to your liking.

I started with a crank pulley spacer made up of three 1/8 inch thick washers and two small bearings that had a shft bore of 10 mm. I went to the local fastener store for a longer crank bolt. I have since replaced this spacer with a piece of aluminum round stock that I drilled out the centre to 10mm. Thinking it's approximately 1 1/8" long.
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1985 GL1200 Limited Edition
2014 Can-Am Spyder RT LE
2021 Royal Enfield Himalayan
1995 GL1500 SE CDN Edition (sold)
2012 Suzuki DL1000 VStrom (sold)
Ontario 1985 GL1200 Limited Edition (sold)
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CYBORG
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Re: Alternator on oldwing

#18

Post by CYBORG »

action1 Pretty much the same way I did mine action1
1978 custom GL1000
1977 custom with 1200 engine
1985 gl1200
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gltriker
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Re: Alternator on oldwing

#19

Post by gltriker »

Rednaxs60 wrote: Wed Mar 30, 2022 7:52 pm
Can't use the engine with the rotor installed. You can use the engine with the stator removed.
That's an extensive and very details rich presentation of your work! :shock:
I reckon you may have meant to say this, though?

Can't use the starter motor without the rotor installed.
Cliff (74yrs ;) )

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dontwantapickle
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Re: Alternator on oldwing

#20

Post by dontwantapickle »

gltriker wrote: Wed Mar 30, 2022 9:48 pm
Can't use the starter motor without the rotor installed.
True.
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Re: Alternator on oldwing

#21

Post by cfairweather »

This is the first time I have seen an external alternator on a GL1000 and while I find it interesting, to me it makes more sense just to fix the original if it goes bad. It looks like installing an external one would be just as hard as fixing the original. Plus, the external one distracts from the beautiful engine. It isn't that difficult to remove the engine and do the job correctly.
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Re: Alternator on oldwing

#22

Post by CYBORG »

I disagree. It is less work then pulling the engine by a long shot. And it is an upgrade to a charging system that is marginal at best, if you have any added accessories that draw power. And as you can see in my avatar, it blends into the design of the bike very well.
1978 custom GL1000
1977 custom with 1200 engine
1985 gl1200
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Re: Alternator on oldwing

#23

Post by Whiskerfish »

A thread from when I built one a few days ago. https://ngwclub.com/forum/viewtopic.php ... so#p144821
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Re: Alternator on oldwing

#24

Post by Rednaxs60 »

gltriker wrote: Wed Mar 30, 2022 9:48 pm
Rednaxs60 wrote: Wed Mar 30, 2022 7:52 pm
Can't use the engine with the rotor installed. You can use the engine with the stator removed.
That's an extensive and very details rich presentation of your work! :shock:
I reckon you may have meant to say this, though?

Can't use the starter motor without the rotor installed.
Meant to say "can't use the engine without the rotor installed". See that you caught me on this - bit of a typing slip.
"When writing the Story of your life, don't let anyone else hold the pen."

Ernest

1985 GL1200 Limited Edition
2014 Can-Am Spyder RT LE
2021 Royal Enfield Himalayan
1995 GL1500 SE CDN Edition (sold)
2012 Suzuki DL1000 VStrom (sold)
Ontario 1985 GL1200 Limited Edition (sold)
2008 GL1800 (sold)
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Rednaxs60
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Re: Alternator on oldwing

#25

Post by Rednaxs60 »

Have a couple of pics that are from the 2017 IBR. A young fellow dressed up his GL1000 for the race. Did very well. It is a lovely piece of work:
1000 GW - 1.jpg
1000 GW - 1.jpg (123.54 KiB) Viewed 459 times
1000 GW - 2.jpg
1000 GW - 2.jpg (199.19 KiB) Viewed 459 times
1000 GW - 3.jpg
1000 GW - 3.jpg (166.97 KiB) Viewed 459 times
1000 GW - 4.jpg
1000 GW - 4.jpg (71.38 KiB) Viewed 459 times
1000 GW - 5.jpg
1000 GW - 5.jpg (135.1 KiB) Viewed 459 times
I think this is from a thread on this forum.
"When writing the Story of your life, don't let anyone else hold the pen."

Ernest

1985 GL1200 Limited Edition
2014 Can-Am Spyder RT LE
2021 Royal Enfield Himalayan
1995 GL1500 SE CDN Edition (sold)
2012 Suzuki DL1000 VStrom (sold)
Ontario 1985 GL1200 Limited Edition (sold)
2008 GL1800 (sold)
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Re: Alternator on oldwing

#26

Post by Whiskerfish »

That is a fine looking bike! The Alt setup looks very professional. Must have access to a machine shop looking at those brackets
"Agreement is not a requirement for Respect" CDR Michael Smith USN (Ret) 2017
"The book is wrong, this whole Conclusion is Fallacious" River Tam
2008 GL1800 IIIA "TH3DOG"
1975/6/7/8/9 Arthur Fulmer Dressed Road bike
1975 Naked Noisy and Nasty in town bike
and a whole garage full of possibilities!!

Psst. oh and by the way CHANGE YOUR BELTS!!!!
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Rednaxs60
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Re: Alternator on oldwing

#27

Post by Rednaxs60 »

There are a few more pics showing CNC machining and such. If a person takes their time, can make a good looking install.
"When writing the Story of your life, don't let anyone else hold the pen."

Ernest

1985 GL1200 Limited Edition
2014 Can-Am Spyder RT LE
2021 Royal Enfield Himalayan
1995 GL1500 SE CDN Edition (sold)
2012 Suzuki DL1000 VStrom (sold)
Ontario 1985 GL1200 Limited Edition (sold)
2008 GL1800 (sold)
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Re: Alternator on oldwing

#28

Post by Gowing »

Wow, just incredible detail on that wing.
Dave

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Re: Alternator on oldwing

#29

Post by Sidecar Bob »

The alternator rotor also functions as the engine's flywheel. On the CX family it is mounted on the crankshaft so this is more obvious.
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Re: Alternator on oldwing

#30

Post by MikeNTexas »

Rednaxs60 wrote: Wed Mar 30, 2022 7:52 pm
I have the alt mod installed. The alternator is designed to turn clockwise as viewed from the front of the bike. I have read that there are alternators that turn in a counterclockwise rotation.
An alternator doesn’t care which way it turns. It creates an alternating current that is converted to DC by the rectifier bridge which is not effected by direction of rotation.
1975 GL1000 Restored (sold)
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