|
|
06-03-2013, 11:07 AM
|
#21
|
Registered User
Join Date: Sep 2007
Posts: 513
|
You wanna see the price of a gearbox for an NXT. $$$$$$$
__________________
|
|
|
06-03-2013, 11:15 AM
|
#22
|
Registered User
Country: UK
Location: Twickenham
Occupation: Consultant
Interests: Boats, cars, shooting, fishing, you know - the usual
Boat make: Velocity 390 SS
Engines: Merc Racing 525's
Cruising area: Solent
Join Date: Jul 2009
Location: Twickenham
Posts: 87
|
My Konrads are good for 800 BHP (Petrol), they have the uprated shafts.
I'll need to check the TQ limits.
__________________
|
|
|
06-03-2013, 11:23 AM
|
#23
|
Registered User
Join Date: Sep 2007
Posts: 513
|
The ACE isn't man enough for the job, and yours aren't a diesel ratio.
|
|
|
06-03-2013, 11:55 AM
|
#24
|
Registered User
Join Date: Sep 2007
Posts: 513
|
Quote:
Originally Posted by bor
There was a pair on offshoreonly.com inthe classifieds for $33000
Not to bad i think considering that it s complete whit transmissions gimbals and bellhousings and flexplates but the last one probaly won t fit on the yanmar , but I Will be happy to buy them from you for my project ��
|
http://www.offshoreonly.com/classifi...o49881-en.html
That'd be your cheapest option, assuming they'd take the power.
|
|
|
06-03-2013, 06:01 PM
|
#25
|
Registered User
Country: netherlands
Location: uithoorn
Occupation: crane driver
Interests: everthing what s fast
Boat make: p21,32 hustler
Engines: 408 v8 bravo 1x
Cruising area: ijsselmeer
Join Date: Jan 2008
Location: uithoorn
Posts: 298
|
Quote:
Originally Posted by Marinautic
You wanna see the price of a gearbox for an NXT. $$$$$$$
|
Yep ,but that are a lot of the merc stuff , I got my hand on 3 pieces for good price and they are white !
|
|
|
06-03-2013, 06:04 PM
|
#26
|
Registered User
Country: netherlands
Location: uithoorn
Occupation: crane driver
Interests: everthing what s fast
Boat make: p21,32 hustler
Engines: 408 v8 bravo 1x
Cruising area: ijsselmeer
Join Date: Jan 2008
Location: uithoorn
Posts: 298
|
Quote:
Originally Posted by Marinautic
|
There are a few go fast packages out in the USA whit the cummins 480 hp together whit the nxt drive package haven t heard about a failure yet and that news usually travels fast !
I wish I had the money available its a good deal but have to much $$$ in the project for now .
|
|
|
07-03-2013, 12:54 PM
|
#27
|
Registered User
Country: UK
Location: East Mids
Occupation: MD hydraulic/engineering company
Interests: Fast cars, bikes,quads, boats, going fast...etc
Boat name: Cheetah
Boat make: Hunton XRS37
Engines: Volvo D6 with DPR drives
Cruising area: So'hampton
Join Date: Sep 2006
Location: East Mids
Posts: 557
|
Quote:
Originally Posted by markb
Looking for a pair of drives suitable for use with yanmar 480's must be in good condition and complete with transom assembly
many thanks
mark
|
Hi Mark,
I think Conrad make a drive specifically suited to low speed diesel torque the NXT was made for petrol engines and as mercruiser cummins has found out it is not suited to low speed diesel torque and have had numerous gearbox and output shaft failures you really need an overdrive transmission between the engine and outdrive to reduce the torque or as Cookee says go with the arnesons.
Peter
|
|
|
07-03-2013, 02:24 PM
|
#28
|
Registered User
Location: West Coast of Norway
Occupation: naval architect
Interests: surface piercing props, stepped hulls, air entrapment hulls
Boat name: none
Boat make: PetterTintorera
Engines: Yamaha 90
Cruising area: West Coast of Norway
Join Date: Sep 2005
Location: West Coast of Norway
Posts: 888
|
Quote:
Originally Posted by Cookee
Unfortunately coping with 480 diesel HP is expensive - is this for racing or pleasure? And if it's for pleasure will you be pushing it at all?
At 5.8 litre with a max RPM of 3300rpm and a straight 6 it's going to be a bit of a thumper and destroy any drive that isn't man enough. I think V's P1 Hustler had these motors and he had Arnesons on it which were just the job, not sure which gearboxes he was using but it was reliable.
PS the Torque is about 950 lb ft according to the Yanmar website.
|
The rated input torque for the NXT is 800 ft-lbs so it would not last long with the yanmars.
|
|
|
08-03-2013, 07:41 AM
|
#29
|
BananaShark Member
Country: UK
Location: Salcombe South Devon
Occupation: Racer and builder
Interests: Winning races
Boat name: BananaShark
Boat make: BananaShark 34' Race
Engines: Twin Yanmar BY 260's
Join Date: Mar 2004
Location: Salcombe South Devon
Posts: 4,638
|
I would also consider putting the engines in cradles if you're going to get enthusiastic with it as these motors have a habit of snapping bits of the block off when they land hard - The other bad news is they have more torque than the 440 that Vee ran in the Hustler!
__________________
Cookee
British Champions! RIB Formula 1 2005
National Speed Record Holder at 90.15 (still)
www.bananasharkracing.com
|
|
|
08-03-2013, 03:55 PM
|
#30
|
BananaShark Member
Country: UK
Location: Salcombe South Devon
Occupation: Racer and builder
Interests: Winning races
Boat name: BananaShark
Boat make: BananaShark 34' Race
Engines: Twin Yanmar BY 260's
Join Date: Mar 2004
Location: Salcombe South Devon
Posts: 4,638
|
Found some information about the Sunseeker XS that raced in P1:
The 38 was considerably heavier, ran with Yanmar 420/440's on trimax drive and ZF twin speed boxes (1:1 in second gear) , it could achieve right around 68
knots. They did do one P1 with 480FPT's on an adjustable levy drive this was
quick (82/83) but ended in disaster, had a horrible tendency to lose grip
in high speed turns.
__________________
Cookee
British Champions! RIB Formula 1 2005
National Speed Record Holder at 90.15 (still)
www.bananasharkracing.com
|
|
|
08-03-2013, 05:16 PM
|
#31
|
Registered User
Location: West Coast of Norway
Occupation: naval architect
Interests: surface piercing props, stepped hulls, air entrapment hulls
Boat name: none
Boat make: PetterTintorera
Engines: Yamaha 90
Cruising area: West Coast of Norway
Join Date: Sep 2005
Location: West Coast of Norway
Posts: 888
|
Adjustable Levi drive?
|
|
|
09-03-2013, 09:13 AM
|
#32
|
BananaShark Member
Country: UK
Location: Salcombe South Devon
Occupation: Racer and builder
Interests: Winning races
Boat name: BananaShark
Boat make: BananaShark 34' Race
Engines: Twin Yanmar BY 260's
Join Date: Mar 2004
Location: Salcombe South Devon
Posts: 4,638
|
Quote:
Originally Posted by Scand
Adjustable Levi drive?
|
Google says: http://www.levidrives.com/
__________________
Cookee
British Champions! RIB Formula 1 2005
National Speed Record Holder at 90.15 (still)
www.bananasharkracing.com
|
|
|
13-03-2013, 06:18 AM
|
#33
|
Registered User
Join Date: Jun 2007
Posts: 90
|
arneson would be the best option as well as the least expensive. you should not have any compromise if you choose the correct setup. hard to argue with something so reliable and tough especially if the boat is to sit in the water full then there is no better option.
__________________
|
|
|
|
|
Thread Tools |
|
Display Modes |
Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
» Recent Threads |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|