ilmor drives

[C_Spray]

The package is designed for a through-hull or transom-mounted water pickup. The drive and transmission will eventually be available separately.

Stecz - 25 more horsepower, 200 lbs lighter, more advanced control systems (fly-by-wire if you want it) and no blower makes a 725/Indy more attractive than a 700/NXT to me. I'm no "Greenie", but I also like the fact that these are certified clean engines. Servicing concerns, pricing and re-sale value will have to sort themselves out. Ilmor has established a good reputation so far, and they told me that they are not about to let that slip away. The round bullet will prevent some of the weird handling dramas experienced in some NXT applications, too....

 

[Sea-Dated]

Great looking drive.....

 

[Wrinkleface]

Saw this at the show!!! Awesome piece!!! Congratz

 

[Sunsation96]

Sweet looking:drool5:, but not ready to replace the Bravo 1 yet knock on wood:rofl:

 

[getchasum111]

why would someone buy this over a nxt or a #6 set up???

so it can be used with an ilmor motor and have a warranty...mercury won't warranty there stuff unless it's all mercury parts....

 

[stecz20]

The package is designed for a through-hull or transom-mounted water pickup. The drive and transmission will eventually be available separately.

Stecz - 25 more horsepower, 200 lbs lighter, more advanced control systems (fly-by-wire if you want it) and no blower makes a 725/Indy more attractive than a 700/NXT to me. I'm no "Greenie", but I also like the fact that these are certified clean engines. Servicing concerns, pricing and re-sale value will have to sort themselves out. Ilmor has established a good reputation so far, and they told me that they are not about to let that slip away. The round bullet will prevent some of the weird handling dramas experienced in some NXT applications, too....

you must have asked a lot of questions...:26::26: thanks..

whats the price difference between indy and nxt package??

 

[Uncle Dave]

you must have asked a lot of questions...:26::26: thanks..

whats the price difference between indy and nxt package??

Originally Posted by C_Spray
The package is designed for a through-hull or transom-mounted water pickup. The drive and transmission will eventually be available separately.

Stecz - 25 more horsepower, 200 lbs lighter, more advanced control systems (fly-by-wire if you want it) and no blower makes a 725/Indy more attractive than a 700/NXT to me. I'm no "Greenie", but I also like the fact that these are certified clean engines. Servicing concerns, pricing and re-sale value will have to sort themselves out. Ilmor has established a good reputation so far, and they told me that they are not about to let that slip away. The round bullet will prevent some of the weird handling dramas experienced in some NXT applications, too....






C spray is correct on all counts. The NXT handling drama is real.

Another reason however is that the Ilmor suffers from far less parasitic loss than a #6 or NXT

It takes something on the order of 24HP- to spin the Indy
A #6 takes 90-100HP to turn
A bravo XR about 44
I think the NXT is probably somewhere in between.

These are huge parasitic losses comparatively .

Uncle Dave

 

[stecz20]

Originally Posted by C_Spray
The package is designed for a through-hull or transom-mounted water pickup. The drive and transmission will eventually be available separately.

Stecz - 25 more horsepower, 200 lbs lighter, more advanced control systems (fly-by-wire if you want it) and no blower makes a 725/Indy more attractive than a 700/NXT to me. I'm no "Greenie", but I also like the fact that these are certified clean engines. Servicing concerns, pricing and re-sale value will have to sort themselves out. Ilmor has established a good reputation so far, and they told me that they are not about to let that slip away. The round bullet will prevent some of the weird handling dramas experienced in some NXT applications, too....






C spray is correct on all counts. The NXT handling drama is real.

Another reason however is that the Ilmor suffers from far less parasitic loss than a #6 or NXT

It takes something on the order of 24HP- to spin the Indy
A #6 takes 90-100HP to turn
A bravo XR about 44
I think the NXT is probably somewhere in between.

These are huge parasitic losses comparatively .

Uncle Dave

wow thats some diff in hp to spin a drive....

what are the problems with handling that nxts are having??

 

[C_Spray]

wow thats some diff in hp to spin a drive....

what are the problems with handling that nxts are having??

The drag numbers for a #6 seem pretty high to me. Regardless, I suspect the overall parasitic drag numbers for the Indy are likely to be the best in the business. The numbers I heard were 4 hp for the transmision and 22 for the drive, but I'm not 100% sure where I heard those - It was a long show...

Stecz - The gearcase on the NXT is shaped like it was whittled from a 4x6 beam - square with rounded corners. If it is mounted at a height where it drags in the water, it generates huge amounts of transom lift, like a small trim tab. A number of early installations handled so badly that Mercury gave those customers #6 drives at no charge. (The #6 drive leg will apparently bolt up to the NXT transom assembly.) The problem has now been pretty much side-stepped by mounting NXT's really high, and then using huge diameter 5- and 6-blade props to reach deep enough into the water to give reasonable slip numbers. Of course, then you don't have much skeg in the water, so.....

(Somebody correct me here if I'm mistaken.)

Here's more about NXT handling problems.

 

[ThrottleUp Props]

The drag numbers for a #6 seem pretty high to me. Regardless, I suspect the overall parasitic drag numbers for the Indy are likely to be the best in the business. The numbers I heard were 4 hp for the transmision and 22 for the drive, but I'm not 100% sure where I heard those - It was a long show...

Stecz - The gearcase on the NXT is shaped like it was whittled from a 4x6 beam - square with rounded corners. If it is mounted at a height where it drags in the water, it generates huge amounts of transom lift, like a small trim tab. A number of early installations handled so badly that Mercury gave those customers #6 drives at no charge. (The #6 drive leg will apparently bolt up to the NXT transom assembly.) The problem has now been pretty much side-stepped by mounting NXT's really high, and then using huge diameter 5- and 6-blade props to reach deep enough into the water to give reasonable slip numbers. Of course, then you don't have much skeg in the water, so.....

(Somebody correct me here if I'm mistaken.)

Here's more about NXT handling problems.

This is exactly what we have seen as well. The NXT has had some severe behavioral issues. The problem for some companies is that there just isn't enough transom height to raise the NXT high enough to get the job done.

Julie

 

[Uncle Dave]

The drag numbers for a #6 seem pretty high to me. Regardless, I suspect the overall parasitic drag numbers for the Indy are likely to be the best in the business. The numbers I heard were 4 hp for the transmision and 22 for the drive, but I'm not 100% sure where I heard those - It was a long show...

Stecz - The gearcase on the NXT is shaped like it was whittled from a 4x6 beam - square with rounded corners. If it is mounted at a height where it drags in the water, it generates huge amounts of transom lift, like a small trim tab. A number of early installations handled so badly that Mercury gave those customers #6 drives at no charge. (The #6 drive leg will apparently bolt up to the NXT transom assembly.) The problem has now been pretty much side-stepped by mounting NXT's really high, and then using huge diameter 5- and 6-blade props to reach deep enough into the water to give reasonable slip numbers. Of course, then you don't have much skeg in the water, so.....

(Somebody correct me here if I'm mistaken.)

Here's more about NXT handling problems.

I got that drag #'s on the 6 from Bill Aubernell (sp?) the guy making the X-power drive.

Bill is claiming 11HP of loss from his setup which looks like the lockheed skunkworks spyplane team designed it.

He paid to "dyno spin" several drives and was quite confident about the #6's loss. His drive supposedly loses less than the Indy and bolts up to a standard XR gimbal.

The Imco SCX supposedly takes a serious toll on the mill feeding it as well.




Uncle Dave

 

[C_Spray]

I got that drag #'s on the 6 from Bill Aubernell (sp?) the guy making the X-power drive... His drive supposedly loses less than the Indy and bolts up to a standard XR gimbal...Uncle Dave

Whoops. Isn't that one of the Bravo's weakest links?

HP numbers will be interesting. It's hard to imagine that there are any huge differences if everyone is dry-sumped, but you never know.

On the other had, a bad skeg or gearcase design could hurt the drag numbers far more.

Bottom line: Competition = Good.

 

[Uncle Dave]

Gimbal does seem to be, a weak point.
Maybe Bill said "housing" in any case still a limitation the DCB guys were commenting thats where the Xpower would break. Seems to make sense, yet Bill says his own Monster spectra with 3200 ponies wont break them.

Bill makes a big deal out of his bearings and loss stating the BMW designworks team focused on these points.

I believe the #6 is rated to hold a lot more than 900 ponies and LB/ft though.
even dry sumped there is no free lunch when it comes to strength. Larger deeper teeth on a straight cut gear set will take a toll like a highway robber.

Agreed fully- competition = good. Especially when its available as an aftermarket bolt up, and brand new dedicated gear.


UD

 

[C_Spray]

...The NXT has had some severe behavioral issues...Julie

"severe behavioral issues" - ROTFLMAO! :smilielol5: Nothing subtle about that - sends a chill up my spine.

Is that another way of saying "Whoops - hold on!!!!"

:lurk5:

It was great meeting you guys on Friday. (I was the guy with Steve Miklos.)

 

[ThrottleUp Props]

Nice meeting you too!

Many OEMs with serious seat time....have described "Mr Toads wild ride", with the NXT's. This my friends speaks volumes!

Julie

 

[ILMORdude]

New pics and PDF's with info here

More updates to site coming soon!!