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Old 09-25-2017
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Mike Hohnstein Mike Hohnstein is offline
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Join Date: Jan 2008
Location: NW Milwaukee Metro Area
Posts: 4,512
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My coach is geared for 106 @ 2800 in 6th .65 od.
87/89/sp w/ZF are geared @ 82 in 5th that's .8 I believe.
That being said the FC drive shaft is too long and complex to safely exceed 80 by much, been 90 a time or two but the drive shaft thrum gets right scary.
75 is a good cruising speed, and it's the speed limit on much of my WI to ID commute that takes 3 days.
Doing a few more calcs: the sealed bearings we used to repair my Thelma type retarder have a speed limit of 3500, have to hit 135 in 6th to over speed them. Probably not an issue but shaft balance and angles are critical.
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Mike Hohnstein
FMCA 97824
'83FC35rb
Germantown, WI/Myrtle ID
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Last edited by Mike Hohnstein; 09-25-2017 at 01:40 AM.
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