Mph lost goin to b max drive from xr drive
04-03-2015, 08:56 PM
#11
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it may just be a lateral move. Going to the smaller prop on a taller ratio is going to benefit from having a more efficient prop in the water. What you lose in parasitic loss you may gain back in less prop slip. (I have nothing to back any of this up . . . . just trying to be an optimistic fellow boater lol)
04-04-2015, 07:11 AM
#13
04-04-2015, 07:18 AM
#14
I'm guessing 5-8 mph loss It will be interesting to see. The 1.36 gear is going to hurt you as it is a torque reducer. That long with the additional drag of the bigger upper gears will result in a speed decrease. Search for Dockman Rich's thread on his findings when he installed them on his 37AT. If I remember correctly, he lost almost 10 mph.
04-04-2015, 07:26 AM
#15
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I'm guessing 5-8 mph loss It will be interesting to see. The 1.36 gear is going to hurt you as it is a torque reducer. That long with the additional drag of the bigger upper gears will result in a speed decrease. Search for Dockman Rich's thread on his findings when he installed them on his 37AT. If I remember correctly, he lost almost 10 mph.
04-04-2015, 10:00 AM
#16
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you lose torque in the gear change but dont you recover that (or some) by spinning a smaller prop?
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Throttles- Cleveland Construction 377 Talon
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Throttles- Cleveland Construction 377 Talon
08 OPA Class 1 National Champion
08 Class 1 Geico Triple Crown Champion
08 OPA High Points Champion
10 OPA Class 1 National Champion ( happy now Ed! )
04-04-2015, 10:02 AM
#17
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You will be running 85 mph when you are done, guaranteed. You will not be happy with the results and as far as being stronger, not so much. Unless b max has stepped up their game since the new owner you won't find much support either. Had them on an 02 ts tg with 750's and xr -2's and ran 104 gps, broke many, many drives and switched to b junk = 87-88 mph and both cases leaked. It is defiantly not a lateral move. I believe they are a 1:31 gear ratio not 1:36 and that is the only gear set you can get. Went from a 32 pitch down to a custom cnc 27 5 blade. Talk about a waste of money. Don't make the same mistake that others have made. If you want to run big power and don't want to spend the money on Ssm conversion ( which is the only way to keep drives alive). You need to buy brand new xr drives every other year and sell off the old ones $$$$. Good luck
04-04-2015, 10:36 AM
#18
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I
New owner John purchased the company in 2010. Lots of changes as the originals were lacking IMO
1.31 was standard but you can now get 1.50 gear ratios. Calling the new owner of the company's product junk would be quite a farce. He has some nice upgrades for XRs as well.
http://www.bravoshop.net/
You will be running 85 mph when you are done, guaranteed. You will not be happy with the results and as far as being stronger, not so much. Unless b max has stepped up their game since the new owner you won't find much support either. Had them on an 02 ts tg with 750's and xr -2's and ran 104 gps, broke many, many drives and switched to b junk = 87-88 mph and both cases leaked. It is defiantly not a lateral move. I believe they are a 1:31 gear ratio not 1:36 and that is the only gear set you can get. Went from a 32 pitch down to a custom cnc 27 5 blade. Talk about a waste of money. Don't make the same mistake that others have made. If you want to run big power and don't want to spend the money on Ssm conversion ( which is the only way to keep drives alive). You need to buy brand new xr drives every other year and sell off the old ones $$$$. Good luck
1.31 was standard but you can now get 1.50 gear ratios. Calling the new owner of the company's product junk would be quite a farce. He has some nice upgrades for XRs as well.
http://www.bravoshop.net/
04-04-2015, 12:36 PM
#19
Charter Member # 55
Charter Member
You will be running 85 mph when you are done, guaranteed. You will not be happy with the results and as far as being stronger, not so much. Unless b max has stepped up their game since the new owner you won't find much support either. Had them on an 02 ts tg with 750's and xr -2's and ran 104 gps, broke many, many drives and switched to b junk = 87-88 mph and both cases leaked. It is defiantly not a lateral move. I believe they are a 1:31 gear ratio not 1:36 and that is the only gear set you can get. Went from a 32 pitch down to a custom cnc 27 5 blade. Talk about a waste of money. Don't make the same mistake that others have made. If you want to run big power and don't want to spend the money on Ssm conversion ( which is the only way to keep drives alive). You need to buy brand new xr drives every other year and sell off the old ones $$$$. Good luck
I would trust John to do any type of work on my boat. He stands behind his work.
04-04-2015, 02:06 PM
#20
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24 outlaw 84 with bravo 1.36, 78 with bmax 1.30
25 eliminator 122 with 1.36 bravo and imco stand off box (it was basically a nicer version of the stern jack), 112 with the 1.30 bmax wo the box.
Those were all with the standard bmax lowers and with the old bmax when dean owned it.
25 eliminator 122 with 1.36 bravo and imco stand off box (it was basically a nicer version of the stern jack), 112 with the 1.30 bmax wo the box.
Those were all with the standard bmax lowers and with the old bmax when dean owned it.
