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Hello,
I am evaluating an EV kit and I see this shaft on a drive motor... notice the female toothed grooves in the shaft... and I’ve not seen this before nor can I figure out what it is called.
Does anyone know the right way to describe this kind of fitting and what the corresponding male part looks like (say, for mounting a pulley)?
Thanks,
-Ryan
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Its a spline.?? Very common on transmission shafts.?? Allows for a slip fit and very high torque capacity.??
?
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On 2021-05-26 11:40 am, Ryan Sweet wrote:
Hello,
I am evaluating an EV kit and I see this shaft on a drive motor... notice the female toothed grooves in the shaft... and I’ve not seen this before nor can I figure out what it is called.
Does anyone know the right way to describe this kind of fitting and what the corresponding male part looks like (say, for mounting a pulley)?
Thanks,
-Ryan
|
Thank you! That was what I needed to learn more.?
Any recommendation for a reference work that can fill these occasional gaps in my understanding of mechanical connections?
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On May 26, 2021, at 09:49, Dan Pfeiffer <dan@...> wrote:
?
Its a spline.?? Very common on transmission shafts.?? Allows for a slip fit and very high torque capacity.??
?
On 2021-05-26 11:40 am, Ryan Sweet wrote:
Hello,
I am evaluating an EV kit and I see this shaft on a drive motor... notice the female toothed grooves in the shaft... and I’ve not seen this before nor can I figure out what it is called.
Does anyone know the right way to describe this kind of fitting and what the corresponding male part looks like (say, for mounting a pulley)?
Thanks,
-Ryan
|
enter gearsomutions.com for helping me get educated.?
So it looks like I would need something like this...?
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On May 26, 2021, at 09:57, Ryan Sweet via groups.io <ryan@...> wrote:
? Thank you! That was what I needed to learn more.?
Any recommendation for a reference work that can fill these occasional gaps in my understanding of mechanical connections? On May 26, 2021, at 09:49, Dan Pfeiffer <dan@...> wrote:
?
Its a spline.?? Very common on transmission shafts.?? Allows for a slip fit and very high torque capacity.??
?
On 2021-05-26 11:40 am, Ryan Sweet wrote:
Hello,
I am evaluating an EV kit and I see this shaft on a drive motor... notice the female toothed grooves in the shaft... and I’ve not seen this before nor can I figure out what it is called.
Does anyone know the right way to describe this kind of fitting and what the corresponding male part looks like (say, for mounting a pulley)?
Thanks,
-Ryan
|
Argh accidentally hit send instead of paste - something like this - ideally with a toothed belt pulley instead of smooth.... any thoughts on the best sources for that?
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On May 26, 2021, at 10:10, Ryan Sweet <ryan@...> wrote:
? enter gearsomutions.com for helping me get educated.?
So it looks like I would need something like this...?
On May 26, 2021, at 09:57, Ryan Sweet via groups.io <ryan@...> wrote:
? Thank you! That was what I needed to learn more.?
Any recommendation for a reference work that can fill these occasional gaps in my understanding of mechanical connections? On May 26, 2021, at 09:49, Dan Pfeiffer <dan@...> wrote:
?
Its a spline.?? Very common on transmission shafts.?? Allows for a slip fit and very high torque capacity.??
?
On 2021-05-26 11:40 am, Ryan Sweet wrote:
Hello,
I am evaluating an EV kit and I see this shaft on a drive motor... notice the female toothed grooves in the shaft... and I’ve not seen this before nor can I figure out what it is called.
Does anyone know the right way to describe this kind of fitting and what the corresponding male part looks like (say, for mounting a pulley)?
Thanks,
-Ryan
|
I don't think that will work.? There is no way to secure the splines together.? The spline is free by design to slide in/out.? That motor was meant for a rigid mounting of some sort not for a pulley drive.?? It looks a lot like the input side of the V-drive transmission on my old diesel that mounted directly to the reverse gear on the motor. ? You would need some sort of housing that the motor and the pulley (mounted on it's own bearings) mount to.?
?
Dan Pfeiffer
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On 2021-05-26 12:12 pm, Ryan Sweet wrote:
Argh accidentally hit send instead of paste - something like this - ideally with a toothed belt pulley instead of smooth.... any thoughts on the best sources for that?
?
?
On May 26, 2021, at 10:10, Ryan Sweet <ryan@...> wrote:
enter gearsomutions.com for helping me get educated.?
?
So it looks like I would need something like this...?
?
On May 26, 2021, at 09:57, Ryan Sweet via groups.io <ryan@...> wrote:
Thank you! That was what I needed to learn more.?
?
Any recommendation for a reference work that can fill these occasional gaps in my understanding of mechanical connections?
On May 26, 2021, at 09:49, Dan Pfeiffer <dan@...> wrote:
Its a spline.?? Very common on transmission shafts.?? Allows for a slip fit and very high torque capacity.??
?
On 2021-05-26 11:40 am, Ryan Sweet wrote:
Hello,
I am evaluating an EV kit and I see this shaft on a drive motor... notice the female toothed grooves in the shaft... and I've not seen this before nor can I figure out what it is called.
Does anyone know the right way to describe this kind of fitting and what the corresponding male part looks like (say, for mounting a pulley)?
Thanks,
-Ryan
|
And the de-facto drive connection on outboard motors… ?
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From: [email protected] [mailto:[email protected]] On Behalf Of Ryan Sweet
Sent: Wednesday, May 26, 2021 9:57 AM
To: [email protected]
Subject: Re: [electricboats] What kind of fitting is this?? Thank you! That was what I needed to learn more.? Any recommendation for a reference work that can fill these occasional gaps in my understanding of mechanical connections?
On May 26, 2021, at 09:49, Dan Pfeiffer <dan@...> wrote:
? Its a spline.?? Very common on transmission shafts.?? Allows for a slip fit and very high torque capacity.??
On 2021-05-26 11:40 am, Ryan Sweet wrote: Hello,
I am evaluating an EV kit and I see this shaft on a drive motor... notice the female toothed grooves in the shaft... and I’ve not seen this before nor can I figure out what it is called.
Does anyone know the right way to describe this kind of fitting and what the corresponding male part looks like (say, for mounting a pulley)?
Thanks,
-Ryan
|
Ryan, you'll need a machinist to turn this shaft into a diameter that fits the toothbelt pulley, and a key slot, made for same.
Or ask the manufacturer of the motor if they have any straightforward recommendations for you.
Carsten
On Thursday, 27 May 2021, 01:12:28 GMT+8, Ryan Sweet <ryan@...> wrote:
Argh accidentally hit send instead of paste - something like this - ideally with a toothed belt pulley instead of smooth.... any thoughts on the best sources for that?
On May 26, 2021, at 10:10, Ryan Sweet <ryan@...> wrote:
?
enter gearsomutions.com for helping me get educated.?
So it looks like I would need something like this...?
On May 26, 2021, at 09:57, Ryan Sweet via groups.io <ryan@...> wrote:
?
Thank you! That was what I needed to learn more.?
Any recommendation for a reference work that can fill these occasional gaps in my understanding of mechanical connections? On May 26, 2021, at 09:49, Dan Pfeiffer <dan@...> wrote:
?
Its a spline.?? Very common on transmission shafts.?? Allows for a slip fit and very high torque capacity.??
?
On 2021-05-26 11:40 am, Ryan Sweet wrote:
Hello,
I am evaluating an EV kit and I see this shaft on a drive motor... notice the female toothed grooves in the shaft... and I’ve not seen this before nor can I figure out what it is called.
Does anyone know the right way to describe this kind of fitting and what the corresponding male part looks like (say, for mounting a pulley)?
Thanks,
-Ryan
|
A fitting like this is commonly used in electric golf carts.? I have a (approx.) 3 hp motor and spline from an old golf cart sitting in my home office someplace.
On Wednesday, May 26, 2021, 9:07:43 PM EDT, Carsten via groups.io <carstensemail@...> wrote:
Ryan, you'll need a machinist to turn this shaft into a diameter that fits the toothbelt pulley, and a key slot, made for same.
Or ask the manufacturer of the motor if they have any straightforward recommendations for you.
Carsten
On Thursday, 27 May 2021, 01:12:28 GMT+8, Ryan Sweet <ryan@...> wrote:
Argh accidentally hit send instead of paste - something like this - ideally with a toothed belt pulley instead of smooth.... any thoughts on the best sources for that?
On May 26, 2021, at 10:10, Ryan Sweet <ryan@...> wrote:
?
enter gearsomutions.com for helping me get educated.?
So it looks like I would need something like this...?
On May 26, 2021, at 09:57, Ryan Sweet via groups.io <ryan@...> wrote:
?
Thank you! That was what I needed to learn more.?
Any recommendation for a reference work that can fill these occasional gaps in my understanding of mechanical connections? On May 26, 2021, at 09:49, Dan Pfeiffer <dan@...> wrote:
?
Its a spline.?? Very common on transmission shafts.?? Allows for a slip fit and very high torque capacity.??
?
On 2021-05-26 11:40 am, Ryan Sweet wrote:
Hello,
I am evaluating an EV kit and I see this shaft on a drive motor... notice the female toothed grooves in the shaft... and I’ve not seen this before nor can I figure out what it is called.
Does anyone know the right way to describe this kind of fitting and what the corresponding male part looks like (say, for mounting a pulley)?
Thanks,
-Ryan
|
You'll use a splined shaft when the shaft has to move axially. (Look at your wheel hub shafts in your car.)
That means, Ryan, than you will have to fix the spline to fix the movement. Can be done by making a locking pin hole through the motor shaft and the spline shaft. Again, you'll need a machinist to do the job.
On Thursday, 27 May 2021, 09:36:31 GMT+8, Jeffrey Griglack via groups.io <griglack@...> wrote:
A fitting like this is commonly used in electric golf carts.? I have a (approx.) 3 hp motor and spline from an old golf cart sitting in my home office someplace.
On Wednesday, May 26, 2021, 9:07:43 PM EDT, Carsten via groups.io <carstensemail@...> wrote:
Ryan, you'll need a machinist to turn this shaft into a diameter that fits the toothbelt pulley, and a key slot, made for same.
Or ask the manufacturer of the motor if they have any straightforward recommendations for you.
Carsten
On Thursday, 27 May 2021, 01:12:28 GMT+8, Ryan Sweet <ryan@...> wrote:
Argh accidentally hit send instead of paste - something like this - ideally with a toothed belt pulley instead of smooth.... any thoughts on the best sources for that?
On May 26, 2021, at 10:10, Ryan Sweet <ryan@...> wrote:
?
enter gearsomutions.com for helping me get educated.?
So it looks like I would need something like this...?
On May 26, 2021, at 09:57, Ryan Sweet via groups.io <ryan@...> wrote:
?
Thank you! That was what I needed to learn more.?
Any recommendation for a reference work that can fill these occasional gaps in my understanding of mechanical connections? On May 26, 2021, at 09:49, Dan Pfeiffer <dan@...> wrote:
?
Its a spline.?? Very common on transmission shafts.?? Allows for a slip fit and very high torque capacity.??
?
On 2021-05-26 11:40 am, Ryan Sweet wrote:
Hello,
I am evaluating an EV kit and I see this shaft on a drive motor... notice the female toothed grooves in the shaft... and I’ve not seen this before nor can I figure out what it is called.
Does anyone know the right way to describe this kind of fitting and what the corresponding male part looks like (say, for mounting a pulley)?
Thanks,
-Ryan
|
Hello Ryan
Can you share the name or link to this ev motor, if they have a 20 spline 7/8 ' shaft that could suit my sail drive if I can find the correct coupling.
Cheers Tim Downes?
On Thu, May 27, 2021 at 12:40 AM Ryan Sweet < ryan@...> wrote: Hello,
I am evaluating an EV kit and I see this shaft on a drive motor... notice the female toothed grooves in the shaft... and I’ve not seen this before nor can I figure out what it is called.
Does anyone know the right way to describe this kind of fitting and what the corresponding male part looks like (say, for mounting a pulley)?
Thanks,
-Ryan
|
Photos attached illustrating Dan's and Myles' comments.
The "male" spline protrudes from the forward side of a sailboat transmission; the "female" side is attached to the flywheel of a small diesel engine.? The flywheel is attached to the engine's crankshaft.? Between the tranmission unit and the flywheel bell housing on the motor is an adapter plate.? Removing or installing the transmission involves sliding the transmission spline into the flywheel spline.
The spline you illustrated first is designed to mate with something in particular.? Why not consult with the mfg. and ask what it's intended for?? That might set you on a productive path to getting an answer to your question.
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THOMAS VANDERMEULEN