Horsepower figures

[rapidray]

I agree with Terry. As an engine builder, these are things I assume would be done if doing that sort of thing. Sometimes I forget people have to be walked through all of this when learning. Things I take for granted after doing it more than 35 years. Ray.

[posplayr]

If we look at the theoretical potential of your bike, you weigh 165 lbs and my 1100EZ (for example) with a VHR pipe, centerstand gone, stock wheels and brakes, weighed 508 lbs with not much gas in the tank. This would make 673 lbs and with 99.3hp, the theoretical 1/4 mile time calculates to 11.02. You must understand that the theoretical time is based on the hp being used for the whole run. With your streetbike, you won't be able to use full power off the line and therefore you should not expect to match that time. Perhaps this will help you understand why blowerbike said mid-11s.

.

I assume you have a model to do that calculation. I have seen such in the past, but was wondering if there is a easy on-line version you are using?

[jimb12]

I assume you have a model to do that calculation. I have seen such in the past, but was wondering if there is a easy on-line version you are using?

The formula is:

the cube root of (weight/horsepower) then multiply that by 5.825 = elapsed time for standing start 1/4 mile

[posplayr]

The formula is:

the cube root of (weight/horsepower) then multiply that by 5.825 = elapsed time for standing start 1/4 mile

I thought maybe you had a frontal air drag term in there.

I looked around and there are a lot of cube root calculators except this one seems to use statistical data as well. I adjusted the data around and it did not make any sense. It goes faster than the drag case???

http://www.autosnout.com/Car-Quarter-Mile-Calculator.php

Here is another that is supposed to me more accurate, but not free and no demo versions.

http://www.maxracesoftware.com/

[blowerbike]

theory sucks...
practical application is where it is at....
that is the difference in pre and post internet.
pre internet you had to learn on your own....trial and error.
post internet everyone is an expert having never raced or tuned a motorcycle for performance use.
i guess what i'm saying is...
everyone is an expert now because they read it on a message board or some website.
this used to be fun pre- 2000 or so.
carry on........................

[posplayr]

theory sucks...
practical application is where it is at....

carry on........................

I have been making a career out of making those match. Not everyone can.

[headsbikesmopars]

Grocery getter

HA,HAAA . what Jim said !!

[posplayr]

HA,HAAA . what Jim said !!

Terry,
Clear out your PM basket a bit. I tired to PM you but it is full.
Jim

[mrbill5491]

I don't need no math to figure out hp, if it gets me down the road with this on my face --> I be good.