Tricks that old racers get up to after retirement

[jackiewilson]

if they knew about torque they would have known they needed 4 of them to get 2 x 700lbsft or so at any rpm to shift a Class 1 boat
would have been a good engine in an outboard class...

Make no mistake Pilgrim . Baffle me with bullsh-t all you want . i would back either one of them against anyone in the world. They worked with Duckworth and were dubbed “ A Pair of Bright Lads” by him , you cannot imagine how high that praise was .

[GENE LANHAM]

Think the owners were Mercury, COSWORTH sent the two engineers that put my boat together stateside to supervise the effort.
Believe me when I tell you , that pair know more about TORQUE than anyone else in the world !
Part of the team that made the motor part of the chassis in the first monocoque ever !

I grew up thinking--'THERE AIN'T NO SUBSTITUTE FOR CUBIC INCHES'---

[GENE LANHAM]

I grew up thinking--'THERE AIN'T NO SUBSTITUTE FOR CUBIC INCHES'---

And then we discovered a SUBSTITUTE---

CUBIC DOLLARS

LYCOMING

RACE FUEL---KEROSINE

[FUJIMO]

[Lake X Kid]

COSWORTH sent the two engineers that put my boat together stateside to supervise the effort.
Believe me when I tell you , that pair know more about TORQUE than anyone else in the world !
Part of the team that made the motor part of the chassis in the first monocoque ever !

HP = Torque x RPM, the importance of torque in a non-shifting vehicle. As I humbly understand it.

Operating with only a single gear is, one of the dilemmas of a race boat setup not found in cars. Without shifting to a higher gear, the boat is confined to a compromise of acceleration or top end speed.

In the chart, the boat is not able to shift to higher gears, thus not able to maximize utilizing the engine’s rising horsepower curve. Therefore prop selection is upmost a vital decision. The wrong prop pitch and smaller diameter, will increase RPM (spinning your tires) and lower the Torque value, in application and in the formula HP = Torque x RPM.
Torque = Force (HP) x Radius Distance (propeller or engine’s connecting rod wrist pin to crankshaft’s center).

Therefore without the benefit of shifting to higher gears in a boat’s application, the Torque value is more important in the boat’s setup equation, than in an automobile.

[Lake X Kid]

[powerabout]

Lots of combos tried in offshore but till the Lambo v12 nothing could make enough torque so our favorite Chev that came out first pretty much outlived them all till now
Remember diesels, 1.5 cap bonus when boosted, couldnt get on the plane then got gears then got banned

( ok QC4v is a bit more modern and lots of other stuff)

[jackiewilson]

GREG , i need help, i replied in a long and meaningful manner to the lake x kids post and its blocked me posting, can you do anything . Jack.

[jackiewilson]

HP = Torque x RPM, the importance of torque in a non-shifting vehicle. As I humbly understand it.

Operating with only a single gear is, one of the dilemmas of a race boat setup not found in cars. Without shifting to a higher gear, the boat is confined to a compromise of acceleration or top end speed.

In the chart, the boat is not able to shift to higher gears, thus not able to maximize utilizing the engine’s rising horsepower curve. Therefore prop selection is upmost a vital decision. The wrong prop pitch and smaller diameter, will increase RPM (spinning your tires) and lower the Torque value, in application and in the formula HP = Torque x RPM.
Torque = Force (HP) x Radius Distance (propeller or engine’s connecting rod wrist pin to crankshaft’s center).

Therefore without the benefit of shifting to higher gears in a boat’s application, the Torque value is more important in the boat’s setup equation, than in an automobile.

i answered this in great detail but unfortunately it go blocked .

[powerabout]

Lake x kid
let me summarize your post for the others...

how much torque you have at 5252 is the real story
take 2 800hp engines but different.
One has hp peak at 6000rpm (with a torque peak of about 800ftlbs at 5252) the other at 11000rpm so at 5252 the 11000 engine has 400hp and about 400ftlbs if its lucky, wont pull the skin off a rice pudding...
it would make a good outboard though...

Please tell me nobody was going to put a 1.5ltr BMW F1 engine in a class 1 boat coz they are 1000hp?

[Rotary John]

I seem to recall HP= torque x RPM/5252. so your 800 ft-lb engine would have 800 HP @ 5252 and 600HP @ 6000RPM ? . your other engine then would have 400HP at 5252. Me thinks w/o actual HP or torque curves your just blowing smoke. I know Jackie is for sure blowing smoke.

[FUJIMO]

...I know Jackie is for sure blowing smoke.

...he's been down on compression for a while now...

[FUJIMO]

[Lake X Kid]

Powerboat and Rotary John, thinks for the replies. I am still digesting your information with some Gatorade.

Hopefully the sage from Britain will stop blowing smoke (and fix those leaky piston rings). And then he can clarify the HP vs Torque controversy. I mean heck, I stuck my neck out there.

Jackie if you are low on Compression, try drinking some Gatorade. The University of Florida developed the beverage, as an energy (hydrating) drink for their student athletics.

[Bob V]

Jackie if you are low on Compression, try drinking some Gatorade. The University of Florida developed the beverage, as an energy (hydrating) drink for their student athletics.

This should boost his compression...