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Sport master -2 lower

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Old 02-25-2018 | 03:41 PM
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Default Sport master -2 lower

1 complete sport master lower, 1.27 ratio, 1.5:1 overall ratio when coupled with upper.
was a spare for a 39 o/l with 525’s.
Will open and inspect gears and bearings, reseal before sale.
$3000 obo
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Old 02-27-2018 | 06:08 AM
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Ttt
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Old 02-27-2018 | 05:46 PM
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Been in storage a while, will clean up this week and update pics
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Old 03-03-2018 | 11:34 AM
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Bump
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Old 03-04-2018 | 07:07 AM
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SO how does it convert to 1.5 ?
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Old 03-04-2018 | 10:18 AM
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Any drive overall ratio is he upper multiplied by the lower
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Old 03-06-2018 | 01:37 PM
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Originally Posted by Unlimited jd
Any drive overall ratio is he upper multiplied by the lower
The bravo Xr is determed in the lower only nothing to do whit the upper
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Old 03-07-2018 | 05:05 PM
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the upper is not 1:1. Yes all 3 ratios of xr use the same upper gear set, but there is still an input shaft to vertical shaft ratio
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Old 03-07-2018 | 07:42 PM
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XR uppers are 1.1875 (19/16 tooth) and with this 1.266:1 (15/19 tooth) lower this makes a 1.5 final ratio....too bad there not 1.35 final or I would take them.

Last edited by lucky cat; 03-07-2018 at 07:43 PM. Reason: My spelling sux
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Old 03-07-2018 | 07:52 PM
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Originally Posted by lucky cat
XR uppers are 1.1875 (19/16 tooth) and with this 1.266:1 (15/19 tooth) lower this makes a 1.5 final ratio....too bad there not 1.35 final or I would take them.
for a fee they can be any ratio you want!
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