top end calculator accuracy

[ACE23]

I'm using 19/45 gearing on the street and I run a 240/40/18 rear tire. When i put it in the top speed calculator it gives me 201 or 206 i can't remember. I'm planning on having my ECU reflashed to 12K....when i changed max engine RPM from 10600 to 12000 it gave me a 233mph top end. Is this correct or accurate?

[WildBro]

10600 is 205mph
12000 is 232mph

[fvance]

Dont forget that your tach lies as much as your speedo. When I hit my 11,300 rev limit my tach says 11,800 or11,900.

[osti33]

10600 is 205mph
12000 is 232mph

Bill,

You would have a pretty good idea.   

Ryan

[Mospeada]

You're not actually thinking of trying to go that fast with a tire/rim combo like that are you? That's a LOT of reciprocating weight....

[WildBro]

You're not actually thinking of trying to go that fast with a tire/rim combo like that are you? That's a LOT of reciprocating weight....

Ya, that's crazy!   

Bill

[SPEED KING]

You're not actually thinking of trying to go that fast with a tire/rim combo like that are you? That's a LOT of reciprocating weight....

Ya, that's crazy!   

Bill

Ya I am sure that would never work, might as well have a set of spinner rims as well...

[TRNorBRN6001]

Yeah, if your going to run that fat tire you might as well run naked too!

[ACE23]

I"m not really planning on anything....i just like to go fast. When my bike made 160HP I used to get out on the interstate an go WOT and run it as fast as it would go.....I plan on doing the same thats why I bought a big ass turbo. My builder recommended not extending my ECU so I'm leaving it alone....not planning on breaking any Land speed records considering my bike weighs probably 630lb with my turbo setup, electronics, and wheels kit....then add my weight of 275 in gear......so you got a 900lb missle, this is why i didnt get a stage 1. This is a streetbike anyway so it should be plenty fast

[WildBro]

I"m not really planning on anything....i just like to go fast. When my bike made 160HP I used to get out on the interstate an go WOT and run it as fast as it would go.....I plan on doing the same thats why I bought a big ass turbo. My builder recommended not extending my ECU so I'm leaving it alone....not planning on breaking any Land speed records considering my bike weighs probably 630lb with my turbo setup, electronics, and wheels kit....then add my weight of 275 in gear......so you got a 900lb missle, this is why i didnt get a stage 1. This is a streetbike anyway so it should be plenty fast

I am sure your tuner knows what he is doing, BUT... you should really set a hard cut on the ecu and the LT10 so if something happens you don't take out the head gasket or more.
900lbs...thats a lot of traction!

Bill

[TrickTom1]

I agree with Bill, set your rev limit to 12,000, you have a built motor.

[ACE23]

I"m not really planning on anything....i just like to go fast. When my bike made 160HP I used to get out on the interstate an go WOT and run it as fast as it would go.....I plan on doing the same thats why I bought a big ass turbo. My builder recommended not extending my ECU so I'm leaving it alone....not planning on breaking any Land speed records considering my bike weighs probably 630lb with my turbo setup, electronics, and wheels kit....then add my weight of 275 in gear......so you got a 900lb missle, this is why i didnt get a stage 1. This is a streetbike anyway so it should be plenty fast

I am sure your tuner knows what he is doing, BUT... you should really set a hard cut on the ecu and the LT10 so if something happens you don't take out the head gasket or more.
900lbs...thats a lot of traction!

Bill

I just sent my ECU off to have the hard cut done and the top end limiter removed along with the dwell time increased.....TrickTom i believe said my micotech was already setup for the hard cut also or whatever is needed to make the microtech work with it.......yeah awhile back richard said the same thing about the weight and the traction 

[WildBro]

Just make sure the LT10 and the ECU are set at the same rpm hard cut!

Bill

[ACE23]

I agree with Bill, set your rev limit to 12,000, you have a built motor.

Yeah I wanted too but Jerry said he wouldn't recommend it if I wasn't racing....I guess just from a reliablity and wear standpoint i'm assuming. I remember looking at Tommy Cole's dyno sheet and his bike was peaking with torque and HP somewhere in the high 9K's.....since my setup is completely different I can't compare mine to that but I was guessing it was along the some lines of thought like that...But I can always go back and do it also. I really wanted to have it done and I can make my own decisions but when a guy who's been doing this for 25 years tells you he wouldn't advise it I don't have much room to justify it at the time....anymore progress on your bike?

[ACE23]

Just make sure the LT10 and the ECU are set at the same rpm hard cut!

Bill

anyway i can tell? if you leave the Rev limiter at 10,600 what to you set the hardcut at?
 it's worth it to me to double check

[WildBro]

Its worth about $4K for a new motor!  No matter where you set the hard cut only on your ECU, set the LT10 the same.  12K is common, but you can set it 11K, 10K... The point is to stop all fuel and cut the motor instead of feeding a very bad Af to 14 or 15K if something go wrong.  Example, my shift forks were going bad last year and I got stuck inbetween 4th and 5th at a shift.  All the bike did was rev to 12K... not 15k which would have taken out the head gasket...

Have who is flashing your ECU set the rpm hard cut only and pick a number, then have the tuner set the hardcut on the LT10 to the same number.

Bill

[ACE23]

Its worth about $4K for a new motor!  No matter where you set the hard cut only on your ECU, set the LT10 the same.  12K is common, but you can set it 11K, 10K... The point is to stop all fuel and cut the motor instead of feeding a very bad Af to 14 or 15K if something go wrong.  Example, my shift forks were going bad last year and I got stuck inbetween 4th and 5th at a shift.  All the bike did was rev to 12K... not 15k which would have taken out the head gasket...

Have who is flashing your ECU set the rpm hard cut only and pick a number, then have the tuner set the hardcut on the LT10 to the same number.

Bill

cool, will do