Quarter Jr deal

Dragsinger · 02-23-2010, 03:25 AM

http://quarterjr.com/

Tom keedle · 02-25-2010, 07:25 AM

Quote:

Originally Posted by Dragsinger

http://quarterjr.com/

anybody take advantage of this yet?
issues?

Tony Curcio · 02-25-2010, 06:14 PM

I downloaded the programs last night. I have 32 single-page calculators and two full blown programs, Quarter Jr and Engine Jr.

Quarter Jr predicts ET, while Engine Jr predicts horsepower & torque. They usually cost $95 each, got all 32 files for $99.00. When/if 250 or more people buy the package on sale, we can all download additional programs.

I had both Engine Jr and Quarter Jr in old DOS format, and wanted to upgrade anyway. The new versions work with torque converter stall speed instead of a factor they used to use, called something like "converter pressure".

It's sorta kinda accurate for getting a ballpark indication of what a change in gearing or added horsepower might do. In my case, the 60 foot times are much slower than in real life. The old program had a way to fudge the result to get it in line with reality. I haven't had time to figure this one out. Also, the best virtual shiftpoints never matched real world on the two race cars I have owned.

Engine Jr. has a parameter for intake duration, but nothing for exhaust duration and nothing for lift for either side, and nothing for center lines. My old program had this stuff. The new one has a parameter for flow in cfm at 28 inches, which I suppose compensates for these things.

The other files have a lot of handy formulae for things like max carb size, header tube lengths & diameters, calculating the volume of an intake port, estimating the cfm for a port once you calculate the volume, estimating the effect additional valve lift will have on flow (not as much as I thought), estimating a combustion chamber cc; compression ratio, cubic inches, port velocity, best fuel injector size, and more.

This stuff is great for looking at cars you'd like to build some day, and might be useful for getting a starting point for a new combination. I feel I got my money's worth, but obviously, there is no substitute for real world testing.

I do intend to upgrade to Engine Pro if it will let me plug in different header sizes and full cam timing. I think this could be a way to find out what direction certain changes take the engine before spending a lot of time and money on parts and testing.

Alan Roehrich · 03-01-2010, 02:34 PM

I bought the software, but have not had the chance to use the new stuff. I do know the old stuff they made is good software.

Vonboxer · 03-01-2010, 04:50 PM

I just got mine too. Great Deal.

engineguy · 03-03-2010, 03:24 PM

I got mine a few days ago.

As of this afternoon (03/03/10) 678 packages have been sold. This means that everyone who buys the deal for $99.00 gets the 32 single application formulas, etc; Quarter jr; Engine jr; Density & Four-Link programs. As soon as 750+ programs have been sold, everyone will receive Quarter Pro AND when 999+ are sold everyone will also get Engine Pro. The sale goes through March 9th only. It is one heck of a good deal, in my opinion.

Tony Curcio · 03-03-2010, 05:53 PM

I had a little time to work with Quarter Jr. All that I had to do to get the 60' times in line with reality was to lie to it and tell it I have 12 inch tires. The traction coefficient was already maxed .

The detailed time slip shows rpm at numerous increments. It looks like it is very close to reality at the finish line and after each shift.

TMonte · 03-07-2010, 10:51 AM

Just got in on this deal...thanks. They're up to 961 sold with 2 days left - hopefully it goes over 999 so we can all get Engine Pro as well.

Tom

Kegracing · 03-07-2010, 11:09 AM

This is a good deal, getting better with all the add on's. Looks like it will hit the 999. I used the origional Quarter Jr program years ago, was still DOS based if I remember right. Been a long time.

Can someone who has bought this tell me how large the files are on the down loads?

Thanks!

Ken

Alan Roehrich · 03-07-2010, 11:15 AM

Quote:

Originally Posted by Kegracing

This is a good deal, getting better with all the add on's. Looks like it will hit the 999. I used the origional Quarter Jr program years ago, was still DOS based if I remember right. Been a long time.

Can someone who has bought this tell me how large the files are on the down loads?

Thanks!

Ken

Not large at all Ken. The 35 items were under 37MB.

02-23-2010, 03:25 AM	#1
Dragsinger VIP Member Join Date: Jul 2008 Location: Liberty City [East Texas] Posts: 1,760 Likes: 5 Liked 99 Times in 60 Posts	Quarter Jr deal http://quarterjr.com/ __________________ Larry Woodfin 471W

02-25-2010, 06:14 PM	#3
Tony Curcio Member Join Date: Mar 2002 Location: West Chester, PA Posts: 271 Likes: 1 Liked 4 Times in 1 Post	Re: Quarter Jr deal I downloaded the programs last night. I have 32 single-page calculators and two full blown programs, Quarter Jr and Engine Jr. Quarter Jr predicts ET, while Engine Jr predicts horsepower & torque. They usually cost $95 each, got all 32 files for $99.00. When/if 250 or more people buy the package on sale, we can all download additional programs. I had both Engine Jr and Quarter Jr in old DOS format, and wanted to upgrade anyway. The new versions work with torque converter stall speed instead of a factor they used to use, called something like "converter pressure". It's sorta kinda accurate for getting a ballpark indication of what a change in gearing or added horsepower might do. In my case, the 60 foot times are much slower than in real life. The old program had a way to fudge the result to get it in line with reality. I haven't had time to figure this one out. Also, the best virtual shiftpoints never matched real world on the two race cars I have owned. Engine Jr. has a parameter for intake duration, but nothing for exhaust duration and nothing for lift for either side, and nothing for center lines. My old program had this stuff. The new one has a parameter for flow in cfm at 28 inches, which I suppose compensates for these things. The other files have a lot of handy formulae for things like max carb size, header tube lengths & diameters, calculating the volume of an intake port, estimating the cfm for a port once you calculate the volume, estimating the effect additional valve lift will have on flow (not as much as I thought), estimating a combustion chamber cc; compression ratio, cubic inches, port velocity, best fuel injector size, and more. This stuff is great for looking at cars you'd like to build some day, and might be useful for getting a starting point for a new combination. I feel I got my money's worth, but obviously, there is no substitute for real world testing. I do intend to upgrade to Engine Pro if it will let me plug in different header sizes and full cam timing. I think this could be a way to find out what direction certain changes take the engine before spending a lot of time and money on parts and testing. __________________ Tony Curcio 1860 STK Last edited by Tony Curcio; 02-26-2010 at 05:22 PM. Reason: typo

03-01-2010, 02:34 PM	#4
Alan Roehrich Veteran Member Join Date: May 2006 Location: Murfreesboro TN Posts: 5,115 Likes: 1,572 Liked 1,829 Times in 414 Posts	Re: Quarter Jr deal I bought the software, but have not had the chance to use the new stuff. I do know the old stuff they made is good software. __________________ Alan Roehrich 212A G/S

03-01-2010, 04:50 PM	#5
Vonboxer Junior Member Join Date: Aug 2009 Location: Atlantic Canada Posts: 12 Likes: 0 Liked 0 Times in 0 Posts	Re: Quarter Jr deal I just got mine too. Great Deal.

03-03-2010, 03:24 PM	#6
engineguy Junior Member Join Date: Jan 2003 Location: Gold Canyon, AZ Posts: 12 Likes: 0 Liked 1 Time in 1 Post	Re: Quarter Jr deal I got mine a few days ago. As of this afternoon (03/03/10) 678 packages have been sold. This means that everyone who buys the deal for $99.00 gets the 32 single application formulas, etc; Quarter jr; Engine jr; Density & Four-Link programs. As soon as 750+ programs have been sold, everyone will receive Quarter Pro AND when 999+ are sold everyone will also get Engine Pro. The sale goes through March 9th only. It is one heck of a good deal, in my opinion.

03-03-2010, 05:53 PM	#7
Tony Curcio Member Join Date: Mar 2002 Location: West Chester, PA Posts: 271 Likes: 1 Liked 4 Times in 1 Post	Re: Quarter Jr deal I had a little time to work with Quarter Jr. All that I had to do to get the 60' times in line with reality was to lie to it and tell it I have 12 inch tires. The traction coefficient was already maxed . The detailed time slip shows rpm at numerous increments. It looks like it is very close to reality at the finish line and after each shift. __________________ Tony Curcio 1860 STK

03-07-2010, 10:51 AM	#8
TMonte Junior Member Join Date: Jul 2008 Location: South Jersey Posts: 32 Likes: 0 Liked 0 Times in 0 Posts	Re: Quarter Jr deal Just got in on this deal...thanks. They're up to 961 sold with 2 days left - hopefully it goes over 999 so we can all get Engine Pro as well. Tom

03-07-2010, 11:09 AM	#9
Kegracing Member Join Date: Jun 2002 Location: Red Oak, TX Posts: 441 Likes: 0 Liked 0 Times in 0 Posts	Re: Quarter Jr deal This is a good deal, getting better with all the add on's. Looks like it will hit the 999. I used the origional Quarter Jr program years ago, was still DOS based if I remember right. Been a long time. Can someone who has bought this tell me how large the files are on the down loads? Thanks! Ken