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ENGINE AND GEAR BOX COUPLING

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aivymathew View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote aivymathew Quote  Post ReplyReply Direct Link To This Post Topic: ENGINE AND GEAR BOX COUPLING
    Posted: 2012-Jul-03 at 9:13am
please give me some idea about "how to connect the engine and gear box "

googling gave me two kinds of pictures 
1. 

2. shaft with key 

Q. what are the possible ways of connecting them
     is mahindra alfa gear box (as mentiond by last years team members) directly coupleable ?
     are the studs matching ?


Edited by aivymathew - 2012-Jul-06 at 12:56am
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Nidhi Joshi View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Nidhi Joshi Quote  Post ReplyReply Direct Link To This Post Posted: 2012-Jul-10 at 8:16am
Doesn't the mahindra alfa have straight splines?

How can the picture make the engine crankshaft diractly couple with the Alfa then?
Nidhi Joshi
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aivymathew View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote aivymathew Quote  Post ReplyReply Direct Link To This Post Posted: 2012-Jul-10 at 8:57am
can we change it ??
coz one picture shows a shaft with key..... 
is it possible ?
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Nidhi Joshi View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Nidhi Joshi Quote  Post ReplyReply Direct Link To This Post Posted: 2012-Jul-10 at 9:04am
Yes, you could change it, but instead you could just machine the engine crankshaft.

Otherwise you'll have to machine both.
Nidhi Joshi
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jeiB View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jeiB Quote  Post ReplyReply Direct Link To This Post Posted: 2012-Jul-10 at 9:30am
Don't you guys have an engine available sitting around? Did you order them? It would be much easier than speculating...I am sure you can couple it to your gearbox without machining the engine input shaft.
Jeremie B.
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Nidhi Joshi View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Nidhi Joshi Quote  Post ReplyReply Direct Link To This Post Posted: 2012-Jul-10 at 10:06am
Yes, I have the engine in front of me. 

The crankshaft for the model we have been provided has a dia of 25.4mm and a keyway.

The Mahindra Alfa gearbox in question has the multiplate clutch with the crankshaft input splined with a max. dia of 20mm.


Nidhi Joshi
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zglazer View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote zglazer Quote  Post ReplyReply Direct Link To This Post Posted: 2012-Jul-10 at 9:27pm
If you want to avoid machining the engine output shaft (which is what I would do), then the straightforward solution would be to design an adapter to go between the engine and the gearbox. Shouldn't be too hard.
Zack Glazer
McGill Baja Racing Alumnus 2009-2013
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http://baja.mcgilleus.ca/
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alampally siddharth View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote alampally siddharth Quote  Post ReplyReply Direct Link To This Post Posted: 2013-Jan-02 at 7:58am
im facing the same problem.please reply with the best possible solution.
briggs and stratton engine has a output with key hole and mahindra alfa gear box clutch has a gear with inner splines of smaller diameter.
if we make a adapter/sleeve ,the length changes and we cannot fix the transmission to the engine with the bolts.
if i am not clear ,please contact me through my mail id siddharthalampally@gmail.com
please reply
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garudPR View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote garudPR Quote  Post ReplyReply Direct Link To This Post Posted: 2013-Jan-10 at 8:42am
design coupler or adaptor which will match pcd of engine on one side and pcd of gearbox on the other ...
Many teams from India use coupler .Also you can contact teams nearby your college because last year BAJA SAE INDIA provided coupler for mahindra alpha champion
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Himeel View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Himeel Quote  Post ReplyReply Direct Link To This Post Posted: 2013-Aug-21 at 10:44pm
Is it ok to do machining on engine output shaft?
I found the following thing in rulebook...
"The adapter for Engine & Transmission is to be designed and installed by students as per the type
of transmission used. Engine drive / output shaft side details are available on BAJA SAEINDIA
official website."
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zglazer View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote zglazer Quote  Post ReplyReply Direct Link To This Post Posted: 2013-Aug-22 at 4:29am
I don't think you're allowed to modify the engine shaft.
Zack Glazer
McGill Baja Racing Alumnus 2009-2013
2012-2013 Drivetrain Designer
http://baja.mcgilleus.ca/
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