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 Make a Hi/Low Transaxle from a Regular One?

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B440
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PostSubject: Make a Hi/Low Transaxle from a Regular One?   Sun Mar 08, 2015 11:06 am

Need some ideas here. I'd like to take a typical 5/6-speed Peerless transaxle from a light-duty tractor, and add a high/low shifter. This would give me 10/12 forward speeds. Is there some way to do this?

Trans. has input pulley on top like this.
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redlinemotorsportts
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PostSubject: Re: Make a Hi/Low Transaxle from a Regular One?   Sun Mar 08, 2015 11:12 am

Only way I see this happening reasonably is putting a 2 speed gear box before it with like 1:1 and 2:1 ratios or the like.

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Doc Sprocket
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PostSubject: Re: Make a Hi/Low Transaxle from a Regular One?   Sun Mar 08, 2015 3:38 pm

@redlinemotorsportts wrote:
Only way I see this happening reasonably is putting a 2 speed gear box before it with like 1:1 and 2:1 ratios or the like.

I concur. Which... Is why I am doing exactly that. There's no way you can do this with a single range tranny without extensive machining.

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PostSubject: Re: Make a Hi/Low Transaxle from a Regular One?   Sun Mar 08, 2015 4:20 pm

ooooh, good idea! Where can I get a 2-speed? Or which tractors have them?
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Moose
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PostSubject: Re: Make a Hi/Low Transaxle from a Regular One?   Sun Mar 08, 2015 7:58 pm

gotta be careful doing so because your input torque is going to go up in the low range so if you start pulling hard could blow the tranny
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mr.modified
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PostSubject: Re: Make a Hi/Low Transaxle from a Regular One?   Sun Mar 08, 2015 10:11 pm

What about a dual belt setup with two clutches. You'd have to have some way to lock out the one you aren't using and two pedals I guess. Or, lets say you usually use the high range. Could have a clutch pedal for that belt and a lever for super low gear, depending on how you wanted to use it.

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PostSubject: Re: Make a Hi/Low Transaxle from a Regular One?   Mon Mar 09, 2015 8:51 pm

@mr.modified wrote:
What about a dual belt setup with two clutches. You'd have to have some way to lock out the one you aren't using and two pedals I guess. Or, lets say you usually use the high range. Could have a clutch pedal for that belt and a lever for super low gear, depending on how you wanted to use it.

That is a doable option. Its been tried a few times in the go kart world with success. Same would apply here.

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