Power in Flux

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ChazFisher replied to the thread Ludicrous idea time.
" I'd be a little leary of flipping the trans over. Pretty sure there's a breather on top, that oil will leak out. The R1100 trans sounds like a better option. I have an R1100RS transmission if you need it.

I'm toying with using an old BMW airhead for my first electric build. The idea of keeping the transmission and avoiding some of the low-speed torque vs. top end tradeoff. So I'm really interested in how your build progresses! "

3 Hours Ago

ChazFisher clicked Likes for this post: Ludicrous idea time by Spaceweasel

4 Hours Ago

Richard230 replied to the thread Closest thing to a motorcycle on four wheels now electric.
" Wasn't that what Mr. Brammo had in mind before he decided to go with an electric motorcycle - and then eventually lost interest after he came up with a nice design that worked pretty well? "

7 Hours Ago

milton replied to the thread AC-23 Motor not spinning with Curtis 1238 controller.
" Anybody have any idea if the clutch works in 1238 controller? I have wired the clutch and checked the 12v supply. When i press the clutch the 12v is activated, but the motor does not stall. "

14 Hours Ago

frodus created the thread CBA IV Pro Battery Analyzer - Brand new, never used.
" I've got a Brand new CBA IV Pro Battery Analyzer that I never got around to using. I got for a project that never went anywhere.

Includes the calibration sheet, USB cable, 40A fuse, Anderson connector for battery and CD ROM.

Cost $200 new, looking to get $130 OBO..

Attachment 7415
Attachment 7413
Attachment 7414 "

1 Day Ago

Spaceweasel clicked Likes for this post: Ludicrous idea time by ChazFisher

1 Day Ago

Spaceweasel replied to the thread Ludicrous idea time.
" Good eye. I wanted to use the Hossack front end of the 06 and up k12. Those have a swingarm that pivots in the frame, but the transmission is part of the engine block. As I was contemplating this I realized the earlier k bikes used a separate trans. But you are right - that requires flipping the 04 trans over to meet the left side shaft. If this prove problematic, my next theory is to try and mate a r1100gs trans into the frame. Those had the swingarm pivoting in the transmission casing itself. This would keep the trans in the appropriate orientation, and maybe allow for more spacing with my (obscenely long) motor, but I would have to move the shock mount to the other side of the frame along with figuring out how to mount the trans in the frame.

Choosing the solution becomes something of a chicken and egg problem. I'm trying to figure out which way to go before I try and solve the engine mounts. "

1 Day Ago

ChazFisher replied to the thread Ludicrous idea time.
"
Quote Originally Posted by Spaceweasel View Post
Transmission (2004 k1200GT)
1st gear: 2.05
2nd gear: 1.60
3rd gear: 1.27
4th gear: 1.04
5th gear: 0.90
6th gear: 0.82

Final drive (2006 K1200S) 2.82

This should give me choices from 5.78:1 to 2.31:1.
Curious why you'd go with two different gen BMWs for swingarm and transmission. That trans is made for a right-side swingarm, while the '06 is a left side. (I rode an '02 K1200RS up until I traded it in a month ago.) For that generation transmission, the flywheel/clutch slides over splines on the engine output shaft, and is bolted in place with one bolt right down the center. There's a complete parts fiche online at realoem.com if you haven't found it yet.

I'm watching with interest! "

1 Day Ago

Richard230 clicked Likes for this post: Ludicrous idea time by Spaceweasel

1 Day Ago

Richard230 clicked Likes for this post: Ludicrous idea time by Spaceweasel

1 Day Ago

Richard230 clicked Likes for this post: Ludicrous idea time by Spaceweasel

1 Day Ago

Spaceweasel replied to the thread Ludicrous idea time.
" Attachment 7412

Here is the drivetrain mocked up into the frame w/ suspension. Not having final spacing on the connection between the motor and transmission shafts makes me nervous about front wheel clearance. "

1 Day Ago

Spaceweasel replied to the thread Ludicrous idea time.
" Ideas? The Lovejoy L110 jaw connectors I got are huge. I hadn't counted on the extra spacing. The L95 I picked up to check sizing are the right size but are underrated for the torque. They make a size in between, but that means they will be slightly too big AND slightly underrated.

Attachment 7408Attachment 7409Attachment 7410Attachment 7411 "

1 Day Ago

Spaceweasel replied to the thread Ludicrous idea time.
" Cut down a K1200LT bellhousing to connect the motor and transmission.

Attachment 7405Attachment 7406Attachment 7407 "

1 Day Ago

Spaceweasel created the thread confederate going electric.

1 Day Ago

Spaceweasel replied to the thread Ludicrous idea time.
" The transmission is mostly to connect the motor to the shaft drive, while achieving both offset (centering the motor) and the appropriate reduction. The ability to change ratios is a bonus.

I'm not familiar with the Impact 9 - do you mean the Impulse?

Yes, a smaller motor would probably be more efficient. But it wouldn't be as interesting. "

1 Day Ago

Frank replied to the thread Ludicrous idea time.
" You'd be better off with a smaller motor and bigger controller (ex. Z1k). It really depends on your goals. Also, while the tranny idea is neat, unless you're racing it's not really necessary. Then again it's not that big, lol. Have a look at the ImPact 9 also. "

1 Day Ago

Spaceweasel replied to the thread Ludicrous idea time.
" What are ElMoto's thoughts on the Curtis 1231C-8601 paired with a Warp9? "

2 Days Ago