How Fast Will A Quincy 6 Go ?
I only recently found and read with great interest and respect the thread titled "How Fast Will AQuincy Flathead 6 go"
Has anyone found the answer yet ? I have been accused of having a small brain before....... ;)
At any rate having seen the pics of J Dub's six on the back of that capsule boat made the hair on the back of my neck stand up. I can't wait to hear about it once they get the project into full swing. To see it run in competition would simply be over the top.
Next, is there a location large enough to find out how fast that six will go on a kneeler ?
I am in no means with this thread saying I have the equipment to try it. I never have had the pleasure of feeling the rush of a true Quincy six. Someday I hope to con someone for a ride in a piece of history.
Dave
A Little Help If Needed??
J Dub:
I for one, as well as many others, think the sound of a Flathead SIX is one of the most wonderful "wails" that ever was, and I, and I am sure there are many others in the BRF community, are waiting anxiously for you to get the engine completed so you can make this attempt at either a new Kilo record or at least determining just how fast with modern boat/prop technology a Looper SIX can go.
I would like to make the following offer if you are willing to accept or it would be helpful or needed in making this project come to pass. I will donate 50.00 to the financial benefit of this effort and would encourage everyone else interested in the project to do the same, to a larger or lesser amount, whatever the individual feels they can do. I am sure you would not have taken it on without confidence in your financial capabilities to bring it off, but I would like to help, as I am sure many others would. All I need is an adress to send my donation to. If for whatever reason the attempt would not come off the funds could be returned if the donor wished. That could be between you and the donor. In my case the donation would have no strings attached, as long as it was used for the attempt with the Looper SIX.
There is one kicker though, I would request that everyone who makes a donation to this effort receive a video of some type showng the attempt, successful or not, if for no other reason to hear that sweet music again, that "wail" that has not been heard for so long in anger.
Let us know your thoughts on the offer.
How fast could the F Loop go?
I ran one of Wayne Walgrave's 11'6" hulls with a Mark 55H back in the day. Wayne is a good friend and we spent a lot of time together back then. We went to the world finals back in the fall of '71 I believe in Louisiana, where someone clocked Wayne at 135 mph in practice! We had so much trouble keeping shear pins in the prop shaft that Wayne made connection with someone from the local air base who brought him some "aircraft" bolts which finally solved that problem. We had the fastest rig on the lake at the time, but were defeated by hitting an aligator milling before the race, and tore off half the propeller! This was a bit disconcerting as we were told there were hardly any fish in that lake and were swimming in it the day before. The guys from Texas stood on the bank and said, "Where'd Y'all say you were from?" They figured it was way to late in the year to swim. Wayn'es boats were from a design concocted by a fighter pilot who designed them to be a stable aerodynamic platform with no lift coming from the flat deck, and the wedge nose keeping them firm in the air. I used to fly mine about an inch off the water riding on my re-shaped gear box, and there were no D Mods that could beat it. We raced with Midwest Power Boat Assoc. out of Minneapolis, MN where I could step down a class with my stocker, and run with the C Pros. I actually won a race at Minnominee, WI. Ran it wide open, never backed off for the corners! Controlled it all with body english. What a ride! Wayne's six was an animal! People would stand behind us on the shore because it was so wicked looking, and wouldn't pay attention when we told them they should move. After we'd light the fire, you should have seen them run! If you'd like any more info, I can tell some stories. Hope this goes well, it's my first time using one of these forums.
Have to chime in on this one.........
I think, having the only limits being ability and set-up, and knowing what an anilmal a 6 banger flathead is.............the question really is "How fast do you want to go?"
Looper HP vs Deflector HP
The Alky B Quincy Merc Deflector was at the end of the road in terms of sustainability due to the Deflector's piston at 39.5 HP.
The reason we went to the Looper, besides the obvious need for more power in racing competition, was because the Deflector piston dome, at 39.5 HP with a 2.500 bore, would literally melt completely off the piston. My father told me stories about how everything was fine when the racers went into the turns at high speed, only to come out of the turns with obviously significant power loss, which later was discovered to be caused by dome meltdown.
So a 60 inch early Alky Quincy Mod Deflector should have been, or would have been, 39.5 times 3 = 118.5 HP at 7800 RPMs.
In dynoing a 22 CI, 2 cylinder Alky Quincy Merc full house Deflector, I saw HP in the low 40's, maybe 42 or 43, before the dome said "see ya." So a 66 inch Alky Quincy Merc Deflector should be about 3 times 43 = 129 HP at 7500 to 7800 RPMs.
The early technology B Alky Looper put out 50 HP x 3 = 150 HP at 9000 RPMs for a 60 CI
6 cylinder Looper.
The latest technology B Alky Looper put out 65 HP at 9500 RPMs, 65 x 3 = 195 HP for a 60 CI Looper.
The early technology for a 66 CI Alky Looper was 180 HP at 9000 RPMs. The latest technology at the time for this motor was 225 HP at 10,000 RPMs.
These figures are based on my firsthand observation and engine development on the Quincy dyno for over 8 years and over 1000 Quincy Welding/ Precision Machine shop dyno cards as a reference.
The biggest problems I see with attempting a late kilo record with a 6 cylinder Alky Looper is:
#1 - the motor's massive height is a difficult aerodynamic deterrent to overcome and
#2 - finding a lower unit that has the R dimension center section (like the D Konig) that can withstand the brutal torque the engine produces. A Konig D unit absolutely will not live under the torque of this engine. The Speedmaster can withstand the torque but it has far too much drag for the kind of speeds the HP of the engine is capable of producing.
I know various people that are working to solve these problems and time will tell how well they succeed.
Thank you for your interest.
Paul A Christner