The transom/shaft height debacle of 2020, HELP!

Vigilant32

BightPatrol
Nov 9, 2004
1,871
926
Name
G
Boat
2
Post another photo showing the side profile of the transom and Whaler drive heights.
 
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uglyducky

I heard there was gonna be cake?
Dec 5, 2017
411
528
Los Angeles
Name
Jesse Collin
Boat
Boston Whaler Challenger 27'
Take your questions to FB - Everything Boston Whaler. Several there have the same boat/hulls.

I have a 17’ with Whaler drive in my shop that is stock and she has 25” motors. If you go 30” when you need 25 ”’s you will regret it.

I can give you stock measurements.

Having done a custom Armstrong bracket on a 32’ Whaler I can tell you it worked perfectly with 25” shafts.

View attachment 1203762
That bracket appears to follow the bottom of the hull. The bracket in this case is “stepped up”.
 

uglyducky

I heard there was gonna be cake?
Dec 5, 2017
411
528
Los Angeles
Name
Jesse Collin
Boat
Boston Whaler Challenger 27'
Post another photo showing the side profile of the transom and Whaler drive heights.
I don't have too many profile pics, here is one. i'll see if i can get the shop to send me another today. you can see the bracket steps up from the bottom contour of the hull by quite a few inches.
 

Vigilant32

BightPatrol
Nov 9, 2004
1,871
926
Name
G
Boat
2
Can you email me the pictures BD software does not allow me to resize them for the best viewing.
 

Vigilant32

BightPatrol
Nov 9, 2004
1,871
926
Name
G
Boat
2
These photos are from a 1990 27’ Walkaround with full floatation stock WhalerDrive.

1261733F-1D08-48E6-BCBA-EF981930571A.jpeg


Approx 15.25” from deck height to ridge In hull just below the rub rail.

0362F399-45D5-4C16-AEE6-3BD1B35732A9.jpeg


Approx 9.5” from top mounting area of the WhalerDrive to bottom of rubrail

97FC2FA5-79E0-4C70-B829-CCE465385582.jpeg


Approx 2.5” from bottom of hull at mid point to bottom of the WhalerDrive.

I will look for more feedback as to modification of options for 25” & 30” motor options provided by BWCD.

A friend has the same hull & yr as yours I’ve reached out to him for measurements of transom & motors. My 1990 hull example may not be valid as a comparasion.
 
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gecsr1

28' Aquasport "Reel Adventure II"
Jul 15, 2005
13,966
3,513
Poway Ca
Name
Gary
Boat
28' Aquasport "Reel Adventure II" / PlainJaneRods
just run a straight edge off the bottom of the hull out past the engine bracket then do your measurement that should tell you what length to get 25" or 30".
 
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uglyducky

I heard there was gonna be cake?
Dec 5, 2017
411
528
Los Angeles
Name
Jesse Collin
Boat
Boston Whaler Challenger 27'
just run a straight edge off the bottom of the hull out past the engine bracket then do your measurement that should tell you what length to get 25" or 30".
that was measured and pictured in the first photo.
 

uglyducky

I heard there was gonna be cake?
Dec 5, 2017
411
528
Los Angeles
Name
Jesse Collin
Boat
Boston Whaler Challenger 27'
verified measurement from bottom of hull straight out to point of contact directly below center of motor mount on transom and came up with 30.75" - gonna go with the 30's. thx to all for your help
 
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