Reply
 
Thread Tools Search this Thread
 
Old 12 March 2009, 15:28   #1
Member
 
Country: UK - England
Town: Isle of Wight
Length: 6m +
Engine: Mercury
Join Date: Sep 2004
Posts: 26
Question - Maximum HP on a Tohatsu 6.1

Does anyone have any information on the maximum HP that could be hung off a Tohatsu 6.1 (One design?) Would appreciate any information on the class as a whole and this specific question. I have seen comments in the past that the boats are 'lightly built' but with the advent of the lighter two stroke Evinrudes etc I am wondering if it is weight or power that would be a limiting factor

Thanks
__________________
Chief Wiggam is offline   Reply With Quote
Old 12 March 2009, 18:18   #2
Member
 
Country: UK - England
Town: Blackpool
Boat name: Magic II
Make: Tohatsu 6.1
Length: 6m +
Engine: Evinrude 115 E-tec
MMSI: 235050189
Join Date: Oct 2006
Posts: 152
Send a message via Skype™ to kwil
They are designed to take 2 stroke engines either 1 x 120hp or 2 x 70hp. I would not put a heavy 4 stroke on as the transon as it is quite low meant for a 20inch shaft. I get just shy of 40 knots with my 115 etec and 17" prop, just over 40knots with the 19" prop. And well over 200 miles range from the built in 160litre tank when cruising at 30-33 knots. If you wanted to go slightly bigger a good match would be the new 115HO etec which I believe actually produces 126hp.

Keith
__________________
kwil is offline   Reply With Quote
Old 12 March 2009, 18:21   #3
Member
 
Country: UK - Wales
Town: Southampton
Boat name: DynaMoHumm/ SRV/deja
Make: Avon8.4, 5.4 & 4.777
Length: 8m +
Engine: Cat3126 Yam 90 &70
MMSI: 42
Join Date: Dec 2003
Posts: 6,562
Tohatsu's are reallysolidly built I've worked on a few and have always been impressed by the build quality they have good strong transoms
__________________
Rogue Wave is offline   Reply With Quote
Old 12 March 2009, 19:53   #4
Member
 
richardjawilson's Avatar
 
Country: UK - England
Town: Boat Lake Geneva
Boat name: Lark
Make: Capelli Cap 32 WA
Length: 10m +
Engine: Yamaha 250x2
MMSI: 235096621
Join Date: Feb 2006
Posts: 193
I hang a 150 opti off the back of my Tohatsu 6.1. The engine is nigh on 200kgs and although the boat goes well imho it makes the boat too stern heavy. In flat water its awesome, but when it starts to get rough she does not like travelling to slowly as she will come off the plane quiet easily. I also have a large A frame and small auxillary as well so that doesnt help the handling.

The fastest I've had out of it was 55.4 mph, but that was on the Thames with some tidal assitance.

I think the tohatsu website says the transom is rated for 120 fyi.

Richard
__________________
richardjawilson is offline   Reply With Quote
Old 13 March 2009, 14:08   #5
Member
 
Country: UK - England
Town: Isle of Wight
Length: 6m +
Engine: Mercury
Join Date: Sep 2004
Posts: 26
Thanks for the information - replies are much appreciated and lots of things to consider - well done Ribnet!
__________________
Chief Wiggam is offline   Reply With Quote
Old 13 March 2009, 18:56   #6
Member
 
Pete7's Avatar
 
Country: UK - England
Town: Gosport
Boat name: April Lass
Make: Moody 31
Length: 9m +
Join Date: Aug 2001
Posts: 4,951
Think Keith is spot recommending the 115. Rib International managed 54 mph out of one of the early 6.1 with 90 hp and mine did 40 mph with the same engine before she got an Opti 150.

This might be worth a read if you haven't seen it before, written about 98 time if your looking at the price.

http://www.ribmagazine.com/site/inde...=104&Itemid=84


Pete
__________________
.
Ribnet is best viewed on a computer of some sort
Pete7 is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off




All times are GMT. The time now is 07:57.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.