mrsantafe
Zone Head
Posts: 521
|
posted November 07, 2005 03:05 PM
transmission gears
Does anyone make different trans gear ratios for our zx12's?? I remember awhile back Bear racing had some but.......
any help would be appreciated!
____________
9.78@155.13 mph 1.71 60 ft @ a near mile high dragstrip
2006 ZX14 gone
2006 ZX10r (Wifes street bike)
2004 zx10r (her race bike)
2002 ZX12 (still kicking a--)
2007 gsxr 1k (race bike)
  
|
osti33
Needs a job
Posts: 2973
|
posted November 07, 2005 03:23 PM
I think Robinson does but I'm not positive.
|
mrsantafe
Zone Head
Posts: 521
|
posted November 07, 2005 04:07 PM
Do you have a website or phone number??
____________
9.78@155.13 mph 1.71 60 ft @ a near mile high dragstrip
2006 ZX14 gone
2006 ZX10r (Wifes street bike)
2004 zx10r (her race bike)
2002 ZX12 (still kicking a--)
2007 gsxr 1k (race bike)
|
osti33
Needs a job
Posts: 2973
|
posted November 07, 2005 10:42 PM
http://www.robinsonindustriesinc.com/
|
mrsantafe
Zone Head
Posts: 521
|
posted November 08, 2005 05:54 PM
thanks fellas any idea on the price. tommorrow ill call them!!
____________
9.78@155.13 mph 1.71 60 ft @ a near mile high dragstrip
2006 ZX14 gone
2006 ZX10r (Wifes street bike)
2004 zx10r (her race bike)
2002 ZX12 (still kicking a--)
2007 gsxr 1k (race bike)
|
psycho1122
Pro
Posts: 1608
|
posted November 09, 2005 05:10 AM
$220.00 a Gear ?!? (billet)
____________
You say PSYCHO like it's a BAD thing!!
|
trenace
Needs a job
Posts: 3056
|
posted November 09, 2005 05:38 AM
I have a slightly taller 5th pair (1.087) and a much taller 6th (0.937) from him, not installed yet as waiting on the overall build. $750 for the three gears.
He was very, very helpful to deal with, working together with me to decide on the ratios for what I was doing. Basically he'll make whatever is possible if it meets your needs. It does take a couple of months to get the gears or at least did in my case, but part of that is extended heat treat.
|
entropy
Moderator
Posts: 8671
|
posted November 09, 2005 05:58 AM
3 gears???
don't they have to be changed in pairs??
____________
This moderator uses moderation in moderation
|
trenace
Needs a job
Posts: 3056
|
posted November 09, 2005 12:12 PM
 Edited By: trenace on 9 Nov 2005 15:35
Usually but not always, apparently.
In the case of my sixth, to my surprise Mr Robinson said it would work through inverting the gears with one new one, yielding 32 driving 30 which is 0.937. Actually he recommended for sixth only inverting the stock 6th gear set (and not purchasing any gear from him for that) which would have yielded .967 but he provided the 0.937 as another thing he could do and I preferred that.
I was surprised by it, from the parts diagram I wouldn't have thought it possible, but he is the expert so I am assuming he is right.
BTW, if I had to do it over again I am not sure I would do it the same.
While I don't understand why it should have to be so, I've been advised repeatedly in many sources that the most efficient, in terms of transmission losses, gearing is 1.000 to 1, in other words direct drive.
So for the purpose of achieving a wider ratio between first and sixth, which really is what I needed rather than per se a taller sixth, I might have done better to have purchased shorter gears 1-4 or possibly 1-5 and gone to direct drive for sixth (and run taller sprockets.) It would have been more expensive though and I'm assuming the difference in power loss between 0.937 sixth and 1.000 is not very great.
As it is, except for that above aspect, I think I'll be pretty happy with the ratios I will have with the Robinson gears. The 4-5 and 5-6 shifts will still stay after shifting at virtually peak power as the hp curve tends to be a broad nearly-constant plateau up there, whereas the stock gaps between these gears were needlessly close. It's most efficient to drop to the lowest rpm that is still generating virtually peak hp rather than have less drop than this, and the stock gear ratios do not follow that principle for those gears.
|
mrsantafe
Zone Head
Posts: 521
|
posted November 09, 2005 05:14 PM
Oops, Trenace I sent you email asking for your 5th and 6th gear ratios. I can clearly see them in your above post.
____________
9.78@155.13 mph 1.71 60 ft @ a near mile high dragstrip
2006 ZX14 gone
2006 ZX10r (Wifes street bike)
2004 zx10r (her race bike)
2002 ZX12 (still kicking a--)
2007 gsxr 1k (race bike)
|
trenace
Needs a job
Posts: 3056
|
posted November 09, 2005 06:00 PM
Edited By: trenace on 9 Nov 2005 18:03
No problem! 
|
VincentHill
Needs a life
Posts: 6520
|
posted November 10, 2005 05:09 AM
I have also sent them a note about OD 5th & 6th Gears. I am going to get the ratios from Bear and see what Robinson says. I have a group of 3 people and possibly 4 that want these gears. Are you saying that you have "ALREADY" Bought Gears or in the process?? Buying 5 sets of gears should bring the price down some??
Remember, Overdrive was used to get better fuel mileage back in the 1950's. I want taller 5th & 6th gears to handle the Extra HP From the Spray but may opt to see about 4th to 6th gears. I know that the Land SPeed Records Bear did and just did were using a taller 5th & 6th Gears!
____________
Made History @ Daytona and still one fast old man!!
|
trenace
Needs a job
Posts: 3056
|
posted November 10, 2005 01:59 PM
I did already get them. I tried to get a group buy going at the time so as to help others if interested, and posted it (at another board, as unfortunately I was in a period of inactivity here at the time) but after a month or so had gone by and I posted I was about to put in the order right then, there were no takers then.
|
VincentHill
Needs a life
Posts: 6520
|
posted November 10, 2005 05:47 PM
You know I understand!!
____________
Made History @ Daytona and still one fast old man!!
|
KZScott
Needs a life
high on speed
Posts: 7235
|
posted October 25, 2007 07:52 PM
quote:
Usually but not always, apparently.
In the case of my sixth, to my surprise Mr Robinson said it would work through inverting the gears with one new one, yielding 32 driving 30 which is 0.937. Actually he recommended for sixth only inverting the stock 6th gear set (and not purchasing any gear from him for that) which would have yielded .967 but he provided the 0.937 as another thing he could do and I preferred that.
I was surprised by it, from the parts diagram I wouldn't have thought it possible, but he is the expert so I am assuming he is right.
BTW, if I had to do it over again I am not sure I would do it the same.
While I don't understand why it should have to be so, I've been advised repeatedly in many sources that the most efficient, in terms of transmission losses, gearing is 1.000 to 1, in other words direct drive.
So for the purpose of achieving a wider ratio between first and sixth, which really is what I needed rather than per se a taller sixth, I might have done better to have purchased shorter gears 1-4 or possibly 1-5 and gone to direct drive for sixth (and run taller sprockets.) It would have been more expensive though and I'm assuming the difference in power loss between 0.937 sixth and 1.000 is not very great.
As it is, except for that above aspect, I think I'll be pretty happy with the ratios I will have with the Robinson gears. The 4-5 and 5-6 shifts will still stay after shifting at virtually peak power as the hp curve tends to be a broad nearly-constant plateau up there, whereas the stock gaps between these gears were needlessly close. It's most efficient to drop to the lowest rpm that is still generating virtually peak hp rather than have less drop than this, and the stock gear ratios do not follow that principle for those gears.
here i go digging up old posts again lol
from reading this, i take it you can get a "poor mans" over drive 6th gear just by switching the places of parts that are ALLREADY in there? can someone confirm?!?
____________
01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos
|
TRNorBRN6001
Needs a job
Posts: 2021
|
posted October 26, 2007 06:06 AM
Sort of, your old 6th becomes your new 5th, but Robinson still has to make 3 gears, one new for 5th and two others for 6th imput/output shaft. contact JohnnyCheese or Mr. Hill as they are probably the only ones with OD gears left for sale. Low first (2.50) is real nice also, lets big guys out of the hole a little better. The gears are cut a little different so they will have to be match with the other gears.
____________
TFA 200MPH CLUB MEMBER!
|
KZScott
Needs a life
high on speed
Posts: 7235
|
posted October 26, 2007 08:08 AM
Im having to spend enough allready on my tranny, or i would have been interested in buying some over drive gears. i was just looking for a free way to get an over drive 6th lol
im getting a low first from Mr Cheese (got a great deal from him again) and Bill Robinson emailed me back today about 2-4. 220 each, or 575 for all 3. and under 100 to get my gears recut to match/get fixed if they are useable. i just sent him some pics of my stuff, so hopefully he can tell me if they are ok to be used. then i need to look into getting the HD clips put on...($$?) it never ends lol
____________
01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos
|
VincentHill
Needs a life
Posts: 6520
|
posted October 26, 2007 09:19 AM
I bought 5 Sets of OD Gears to get a Killer Price and he matched the Back Cut and Polished the gears to boot! Last week he needed a Stock ZX12R Front SProcket and I PAID the Shipping to him. As far as I am concerned, I still owe him!
____________
Made History @ Daytona and still one fast old man!!
|
mrsantafe
Zone Head
Posts: 521
|
posted October 30, 2007 07:48 PM
I'm one of the few guys who got a set of those 5th and 6th gear overdrive gears. I really like them it allows me to run a shorter gear for drag racing and still have nice top end when combined with an extended ecu. For example (on the dyno) with 16-48 gearing it appears the bike is geared for 183 mph.
____________
9.78@155.13 mph 1.71 60 ft @ a near mile high dragstrip
2006 ZX14 gone
2006 ZX10r (Wifes street bike)
2004 zx10r (her race bike)
2002 ZX12 (still kicking a--)
2007 gsxr 1k (race bike)
|
KZScott
Needs a life
high on speed
Posts: 7235
|
posted October 31, 2007 07:36 AM
haha damn, the more i read, the more i want a set
____________
01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos
|
VincentHill
Needs a life
Posts: 6520
|
posted October 31, 2007 08:06 AM
Jim Owen set the Record at Maxton on a Big SHot of Spray at 219 on his ZX12R using a set of these gears! Iike someone said, it allows you to be geared a lot shorter for Accel (In my case off -Spray) up to 4th gear and then with the additional HP pull the taller gears.
In my case I am geared 19 - 45 or 46 and would usually be geared 19 - 42 for the same top speed
____________
Made History @ Daytona and still one fast old man!!
|
KZScott
Needs a life
high on speed
Posts: 7235
|
posted October 31, 2007 08:35 AM
hmmm now that i think about it, the thing is im going to be geared so that ill be going across the finish line at the drag strip in 5th or 6th. trying to copy NOX who traps in the top of 6th. it might actually hurt et dragracing if its a big jump from 4th to 5th???
____________
01 ZX-12R 8.84 @ 156.3 no bars, DOT tires. Pump Gas, NA.... turbo 8.47 @ 164.
00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
00 ZX-12R street turbo 1: 227.9 1.5: 234.1 Loring AFB
00 ZX-12R LSR turbo 1: 263.1 1.5: 266.5 Loring AFB Worlds fastest ZX-12R
CMG Racing RCC Turbos
|
entropy
Moderator
Posts: 8671
|
posted October 31, 2007 09:01 AM
"it might actually hurt et dragracing if its a big jump from 4th to 5th???"
IMO it surely will
____________
This moderator uses moderation in moderation
|
VincentHill
Needs a life
Posts: 6520
|
posted October 31, 2007 03:32 PM
The Difference (I think) for mine was from 1.0 to .96 in top gear so it is not a HUGE Jump! Bear Racing uses these as Standard on his Drag Bikes. ALlows him to be Stronger out of the hole with the same top end!
____________
Made History @ Daytona and still one fast old man!!
|
johnnycheese
Pro
Posts: 1008
|
posted November 01, 2007 05:42 PM
I have a set for sell never used that ralf bought from Mr. Hill
____________
Builder and tuner of some of the fastest N.A. and P/A Hayabusas and ZX12 /14 in Texas
|
|
|
HOME
NEW TOPIC