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tylerwatts replied to the thread Sachs xtc 125 conversion.
" Looking very cool Flo!

Cheers

Tyler "

3 Hours Ago

tylerwatts clicked Likes for this post: Sachs xtc 125 conversion by flo

3 Hours Ago

Functional Artist replied to the thread 1980 Kawasaki 440 LTD 8kW conversion.
" Functional Art!

Installing the motor
https://www.youtube.com/watch?v=WFKgGyDU0IY "

3 Hours Ago

aggrc clicked Likes for this post: Looks promising... by Stevo

3 Hours Ago

Electro Flyers replied to the thread 1980 Kawasaki 440 LTD 8kW conversion.
" So, how is this design working out for you? "

5 Hours Ago

Functional Artist replied to the thread 1980 Kawasaki 440 LTD 8kW conversion.
"
Quote Originally Posted by Electro Flyers View Post
It seems to me you're going to a lot of work,expense, and an extra 5# of weight, when there is an easier, cheaper, and lighter solution. An idler on the slack side of a chain or belt drive is typically lightly loaded when compared to the other bearings and sprockets in the system. Regenerative braking would put an intermittent somewhat heavier load on the idler- but probably well within its load capacity.

The location for the idler sprocket I'm referring to is far away from the motor location, close to the rear sprocket, on top of the swing arm.
This video may help to explain this jack shaft/idler concept & placement a bit better

https://www.youtube.com/watch?v=P3EOoFsOFu4&t=4s

Attachment 7861 "

5 Hours Ago

Functional Artist replied to the thread 1980 Kawasaki 440 LTD 8kW conversion.
" Yes again, the key is 3/16"
...typin' too fast

Interesting description of my DIY idea though

Next, I had to make an "extension shelf" to help support the motor

Here is a video with more info

https://www.youtube.com/watch?v=C4zEj0xQ9g0

& here's another

https://www.youtube.com/watch?v=CbBYPVDzMcU "

8 Hours Ago

Electro Flyers replied to the thread 1980 Kawasaki 440 LTD 8kW conversion.
"
Quote Originally Posted by Functional Artist View Post
Yes, counterclockwise

A feature of "this" concept is that the gear ratio can be easily changed.
...the motor & "idler" both have a 3/4" shaft with a 3/36" key

I am using a 10T sprocket on the motor, a 13T sprocket on the "idler" & a 54T sprocket on the rear wheel for a 5.4:1 gear ratio
So, by simply swapping the motors 10T sprocket with the "idler" 13T sprocket the gear ratio would change to ~4.1 gear ratio
& the chain length & tension would not change or have to be adjusted

How well this motor will motivate all of the weight of the motorcycle & the operator & at what gear ratio is questionable
...this concept gives me options
I think you meant to write 3/16" key. Interesting rationalization for an overweight and overwrought design. "

9 Hours Ago

Functional Artist replied to the thread 1980 Kawasaki 440 LTD 8kW conversion.
" Yes, counterclockwise

A feature of "this" concept is that the gear ratio can be easily changed.
...the motor & "idler" both have a 3/4" shaft with a 3/36" key

I am using a 10T sprocket on the motor, a 13T sprocket on the "idler" & a 54T sprocket on the rear wheel for a 5.4:1 gear ratio
So, by simply swapping the motors 10T sprocket with the "idler" 13T sprocket the gear ratio would change to ~4.1 gear ratio
…& the chain length & tension would not change or have to be adjusted

How well this motor will motivate all of the weight of the motorcycle & the operator & at what gear ratio is questionable
...this concept gives me options "

11 Hours Ago

EVcycle replied to the thread The Juiced Drag bike progress post.
" A rainout Double header. The track having timing issues (hey, poo poo happens) did not help as things were delayed several hours..

No one got to play.

We are collecting a load of rain check tickets! We may not have to pay to race the rest of the year.. "

1 Day Ago

Electro Flyers replied to the thread 1980 Kawasaki 440 LTD 8kW conversion.
" I think you meant to write counterclockwise. Put all of the chain above the SW, between the sprockets. Put the idler sprocket in a fabricated bracket on top of the SW, close to the rear sprocket, below the lower, slack chain. The one clearance issue may be where the chain passes over the idler sprocket, past the inside of the SW tube, to the rear sprocket. Some minimal flattening of the inside of the SW tube might create enough clearance, as I wrote before, or move the sprockets inboard slightly. "

1 Day Ago

Functional Artist replied to the thread 1980 Kawasaki 440 LTD 8kW conversion.
"
Quote Originally Posted by Electro Flyers View Post
It seems to me you're going to a lot of work,expense, and an extra 5# of weight, when there is an easier, cheaper, and lighter solution. An idler on the slack side of a chain or belt drive is typically lightly loaded when compared to the other bearings and sprockets in the system. Regenerative braking would put an intermittent somewhat heavier load on the idler- but probably well within its load capacity.

The location for the idler sprocket I'm referring to is far away from the motor location, close to the rear sprocket, on top of the swing arm.
I'm not following you.

On top of the swing arm, between the motor (drive sprocket) & wheel (driven sprocket) is the "heavy load" drive side & not where an idler is needed

I needed an "idler" sprocket down below the motor, on the "slack" side, to help route the chain around the swing arm


The motor rotating clockwise pulls on the sprocket of the rear wheel, via the chain, making it turn clockwise too

...on the "slack" side, the chain comes down off of the motor sprocket to the jack shaft sprocket "idler"

...then, wraps around the "idler" sprocket, clearing the swing arm & goes back to the sprocket on the rear wheel completing "the circuit" "

1 Day Ago

Stevo replied to the thread Looks promising....
" I guess I'm a glass half full kinda guy "

1 Day Ago

Electro Flyers replied to the thread 1980 Kawasaki 440 LTD 8kW conversion.
"
Quote Originally Posted by Functional Artist View Post
Ya, I know. I've done a lot of work on go karts & jack shafts are used a lot.
I just working with technology & terms that I was used to & also parts that I already had, to work with.

I was thinkin' strength. Most idlers, that I knew of were for light duty situations like routing belts on car engines.
I figured this big motor, motivating a full size motorcycle, would apply much more pressure/force.
I guess you could call it a DIY super HD idler/(1) sprocket jackshaft.

I can't put anything above the swing arm, that where the motor is going to be mounted (it fills the whole space)
It looks like this set up will but, I appreciate the input, stay tuned

Here is a video with more info

https://www.youtube.com/watch?v=P0ReyyFYkKk&t=190s
It seems to me you're going to a lot of work,expense, and an extra 5# of weight, when there is an easier, cheaper, and lighter solution. An idler on the slack side of a chain or belt drive is typically lightly loaded when compared to the other bearings and sprockets in the system. Regenerative braking would put an intermittent somewhat heavier load on the idler- but probably well within its load capacity.

The location for the idler sprocket I'm referring to is far away from the motor location, close to the rear sprocket, on top of the swing arm. "

1 Day Ago

Functional Artist replied to the thread 1980 Kawasaki 440 LTD 8kW conversion.
" Ya, I know. I've done a lot of work on go karts & jack shafts are used a lot.
I just working with technology & terms that I was used to & also parts that I already had, to work with.

I was thinkin' strength. Most idlers, that I knew of were for light duty situations like routing belts on car engines.
I figured this big motor, motivating a full size motorcycle, would apply much more pressure/force.
I guess you could call it a DIY super HD idler/(1) sprocket jackshaft.

I can't put anything above the swing arm, that where the motor is going to be mounted (it fills the whole space)
It looks like this set up will but, I appreciate the input, stay tuned

Here is a video with more info

https://www.youtube.com/watch?v=P0ReyyFYkKk&t=190s "

1 Day Ago

Atrastin replied to the thread Parting out old Project - Motors-Charger-Motor Controller-Batteries : Make Offer!!.
" Hi!

I'm also interested in the motor, if it is still available. I'm planing to convert my Suzuki GSF 600 Bandit to electric
I sent you an email with few questions. "

1 Day Ago

Electro Flyers replied to the thread 1980 Kawasaki 440 LTD 8kW conversion.
" Technically speaking, what you call a jack shaft is actually an idler shaft or just an idler. A better placement for the idler would be above the swing arm to get the maximum chain wrap on the sprockets. This decreasing wear, chain noise, and reduces the possibility of the chain slipping.

Chain idler sprockets are available. They are compact, easy to mount, and cheap: https://www.amazon.com/Idler-Sprocke.../dp/B00O57YAL4 They can be mounted with a single shear bolt on a heavy bracket or with a double shear bolt between 2 lighter brackets for more strength. The idler sprocket would have to be mounted well back on the swing arm to allow the chain to clear the inside of the swing arm. Some bikes may not have enough clearance in this area. The front and rear sprockets may have to be moved in to create more clearance. Or, the swing arm flattened slightly on the inside near the rear sprocket teeth. "

1 Day Ago

Richard230 clicked Likes for this post: Chang Jiang 750 Sidecar Conversion by bob_piper

2 Days Ago

Richard230 replied to the thread Looks promising....
"
Quote Originally Posted by Stevo View Post
I'm shocked I beat Richard to this one...
https://news.umich.edu/battery-break...nt-catch-fire/
That is because I get my news from my local newspaper in California and not from the MU. Sounds promising, but we all know that there have been a lot of great sounding battery ideas that are developed in University labs which never seem to see the light of day in the consumer market. Let me know when and where I can buy one and then I will believe it. "

2 Days Ago

Functional Artist replied to the thread 1980 Kawasaki 440 LTD 8kW conversion.
" We kinda have a plan
...now, let's see if we can make it work

Going to have to
...build a motor mount extension shelf
...then, get the motor aligned & mounted
…& add a couple of bearings & an "idler pulley/gear" to help route the chain

https://www.youtube.com/watch?v=QvE4Ir8pxPk&t=5s "

2 Days Ago