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Offline Yoshi

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Re: Busa specs
« Reply #45 on: January 01, 2009, 05:53:33 PM »
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Offline Engineer

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Re: Busa specs
« Reply #46 on: January 01, 2009, 05:56:05 PM »
Here we go......  :police:


 3:
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Offline fabr

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Re: Busa specs
« Reply #47 on: January 01, 2009, 05:58:34 PM »
Quote from: Engineer on January 01, 2009, 05:47:01 PM
Where is the reduction from the crank to the clutch figured in?   I think the number is even higher.
It's in there just not stated.  Once again
dyno tq# times primary reduction times 1st gear =countershaft tq.
80x1.596x2.615=338.8 at the CS Plug in any tq# you wish at the first to get what you want bug.
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"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

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Offline Engineer

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Re: Busa specs
« Reply #48 on: January 01, 2009, 05:59:23 PM »
We had the chassis dyno discussion here before.........    Tire sizes and gear ratio's should have no affect on the numbers, because it is always figured back to motor RPM.

If it wasn't, then you could just put the vehicle in a lower gear and get a better number because you would have more torque, and then a higher HP.


 ;D ;D ;D ;D ;D
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Offline Engineer

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Re: Busa specs
« Reply #49 on: January 01, 2009, 06:01:57 PM »
Quote from: Masterfabr on January 01, 2009, 05:58:34 PM
It's in there just not stated.  Once again
dyno tq# times primary reduction times 1st gear =countershaft tq.
80x1.596x2.615=338.8 at the CS Plug in any tq# you wish at the first to get what you want bug.

I think he has his answer.........


A clutch petal and shifter is in Bug's future......  That is how real men drive. :o :o :o


 ;D ;D ;D


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Offline fabr

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Re: Busa specs
« Reply #50 on: January 01, 2009, 06:02:51 PM »
Quote from: Engineer on January 01, 2009, 05:50:11 PM
If you go back to the beggining he is trying to setup his gear ratio so that the MINI-Mite motor that he is using will not exceed the torque output of a busa, which has been proven to work with his FNR.  And he is assuming that the Busa was geared to the FNR at 1:1.

But that won't work as the countershaft in first gear assuming 11500 for a redline the CS rpm would only be 2755 . He loses any mechanical advantage when he gears UP the trans. No win there.
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"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

-----------------------------------------------------------
 " You have all the right in the world to believe any damn thing you'd like, but you don't have the right to demand that I agree with your fantasy"

Offline fabr

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Re: Busa specs
« Reply #51 on: January 01, 2009, 06:05:08 PM »
Quote from: Engineer on January 01, 2009, 06:01:57 PM
I think he has his answer.........


A clutch petal and shifter is in Bug's future......  That is how real men drive. :o :o :o


 ;D ;D ;D



Actually REAL MEN just roll off the throttle,grab a handful(of whatevers handy) and keep on going.Clutches are for women and putting around camp.Hehe
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"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

-----------------------------------------------------------
 " You have all the right in the world to believe any damn thing you'd like, but you don't have the right to demand that I agree with your fantasy"

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Re: Busa specs
« Reply #52 on: January 01, 2009, 06:11:14 PM »
Quote from: Masterfabr on January 01, 2009, 06:02:51 PM
But that won't work as the countershaft in first gear assuming 11500 for a redline the CS rpm would only be 2755 . He loses any mechanical advantage when he gears UP the trans. No win there.

explain this more please...
I understand there is a huge disadvantage.. as i will loose speed...right now the 600 doo motor makes about 90lbs of torque im guessing, but at the same time i am doing it at 8600 rpms on the crank, assuming i am shifted "cvt" 1:1 my trans input shaft will be spinning 8600 rpms as well.... were the bike motor torque will be at 7700 rpms or so... my max torque is nothing comparable to a bike in first gear, but in 6th gear i out weigh it substantually at the same rpm...
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Re: Busa specs
« Reply #53 on: January 01, 2009, 06:13:49 PM »
I better just put a bigger 2 stroke in it and call it good i guess... ;D
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Offline Engineer

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Re: Busa specs
« Reply #54 on: January 01, 2009, 06:16:48 PM »
Quote from: Masterfabr on January 01, 2009, 06:02:51 PM
But that won't work as the countershaft in first gear assuming 11500 for a redline the CS rpm would only be 2755 . He loses any mechanical advantage when he gears UP the trans. No win there.

I don't understand the problem.
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Offline Yoshi

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Re: Busa specs
« Reply #55 on: January 01, 2009, 06:19:30 PM »
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Offline fabr

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Re: Busa specs
« Reply #56 on: January 01, 2009, 06:21:52 PM »
Additional parasitic losses both in the busa trans and the final gear ratio increase
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"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

-----------------------------------------------------------
 " You have all the right in the world to believe any damn thing you'd like, but you don't have the right to demand that I agree with your fantasy"

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Re: Busa specs
« Reply #57 on: January 01, 2009, 06:23:43 PM »
Quote from: Yoshi on January 01, 2009, 06:19:30 PM
if your gearing it lower, you will not loose speed, you will gain speed and lug the motor more off the line.

do you know the hp/torque specs for the motor your wanting to use, if not, what's the make and year so I can look up the reductions, we need to figure out how much torque you have at the output shaft to figure out what you need to do......

01/03 gixer 750 here is what i came up with for torque after primary reduction and in 1st gr...357.97
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Offline Engineer

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Re: Busa specs
« Reply #58 on: January 01, 2009, 06:25:10 PM »
Quote from: Masterfabr on January 01, 2009, 06:21:52 PM
Additional parasitic losses both in the busa trans and the final gear ratio increase

What are you refering to?


 b:1
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Offline fabr

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Re: Busa specs
« Reply #59 on: January 01, 2009, 06:28:16 PM »
He needs to state what his objective is so we can understand this.I think I know and there will be no increase in performance and likely a decrease. Whatcha you really thinking bug?
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"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

-----------------------------------------------------------
 " You have all the right in the world to believe any damn thing you'd like, but you don't have the right to demand that I agree with your fantasy"
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