2010 VECTOR GT GEARING

[superb]

I purchased a 2010 vector gt with a excell header and ulmer clutching. My question is, if i gear down one tooth, will it hurt the top end? I guess the ultimate top end for this sled would be between 100mph to 105mph. I would like it to keep up with or even be quicker than a 1200 ski-doo. Thank-you in advance for any replies.

 

[Vectornut]

When it comes to the 1200 Ski-doo, The Vector is still the king of the wide open fields and the lakes. Even the older Vectors are on top.

 

[TRUE BLUE SINCE 1980]

I purchased a 2010 vector gt with a excell header and ulmer clutching. My question is, if i gear down one tooth, will it hurt the top end? I guess the ultimate top end for this sled would be between 100mph to 105mph. I would like it to keep up with or even be quicker than a 1200 ski-doo. Thank-you in advance for any replies.

I hape this topic takes off.
A stock gt has 24- 38 gears (1.58)
A stock ltx has 24-39 gears (1.63)

I have a stock 10 ltx . It runs 104 on the dream meter (-6 or 7 for the real world)
The RPM's are hanging at 84500 +., The motor is" floating' , its cranking so hard!
..... getting 13 MPG.
Had the clutches cut for over drive, that didnt help , the belt is not coming all the way to the top.
I am running with Apexes and want more on the top side. I want to raise a tooth to a 25-29 but, told buy some on here that , that is not the way to go .
.....also looking for answers!

 

[TRUE BLUE SINCE 1980]

When it comes to the 1200 Ski-doo, The Vector is still the king of the wide open fields and the lakes. Even the older Vectors are on top.

There is one of our findings an older vector with the carborator is faster than an F.I. vector

 

[the kitchen]

First off the GT has 22/38 for stock gears. This is why it is so tourquey. Just change the top gear to 23 tooth and you will gain 6 mph without loosing performance.

 

[TRUE BLUE SINCE 1980]

I have not opened the chain case and counted the teeth, so I am not 100% on this . But, The 2010 vector service manual confirms the 24-38 and the 24-39 gears.

 

[Sled Dog]

I purchased a 2010 vector gt with a excell header and ulmer clutching. My question is, if i gear down one tooth, will it hurt the top end? I guess the ultimate top end for this sled would be between 100mph to 105mph. I would like it to keep up with or even be quicker than a 1200 ski-doo. Thank-you in advance for any replies.

I hape this topic takes off.
A stock gt has 24- 38 gears (1.58)
A stock ltx has 24-39 gears (1.63)

I have a stock 10 ltx . It runs 104 on the dream meter (-6 or 7 for the real world)
The RPM's are hanging at 84500 +., The motor is" floating' , its cranking so hard!
..... getting 13 MPG.
Had the clutches cut for over drive, that didnt help , the belt is not coming all the way to the top.
I am running with Apexes and want more on the top side. I want to raise a tooth to a 25-29 but, told buy some on here that , that is not the way to go .
.....also looking for answers!

You may need to add a bit of weight to the primary to get it to fully open but remember the motor must have the balls to pull it. In other words there must be some wasted ponies to take advantage of.

 

[TRUE BLUE SINCE 1980]

I purchased a 2010 vector gt with a excell header and ulmer clutching. My question is, if i gear down one tooth, will it hurt the top end? I guess the ultimate top end for this sled would be between 100mph to 105mph. I would like it to keep up with or even be quicker than a 1200 ski-doo. Thank-you in advance for any replies.

oops , I misread your post. and took it in the wrong direction. I bought aan apex a few years ago for my son. I wanted to slow it down, so i lowered the gear one tooth ,(raised the ratio) it slowed it down 6 to 8 m.p.h. but it was quicker to the point it sort of beat you up all day.
I rode it 2 days back to back on the same roads , and there was deffinately a difference in speed.

 

[pro116]

The theory about gerauing up and gaining mph isn't always true unless the sled is geared low from the factory which is not the case here.
Gearing up the vector will Not gain you anymore mph unless you have signifigant power gains like turbo,sc or nitrous.

I geared the vector down to 21-38 and ran 112mph on timers and radar the speedo read about 122-124.
The vectors are over geared from the factory.I have spend tons of hr testing on timers and out in the field from mtn riding,trail riding to the drag strip.

 

[TRUE BLUE SINCE 1980]

The theory about gerauing up and gaining mph isn't always true unless the sled is geared low from the factory which is not the case here.
Gearing up the vector will Not gain you anymore mph unless you have signifigant power gains like turbo,sc or nitrous.

I geared the vector down to 21-38 and ran 112mph on timers and radar the speedo read about 122-124.
The vectors are over geared from the factory.I have spend tons of hr testing on timers and out in the field from mtn riding,trail riding to the drag strip.

I sort of get .... but I don't get it. With a 21 gear that thing must suck gas like a dump truck!
I have a 22 gear ,I may just have to give it a try.

 

[Sled Dog]

Think of it like this lets say your truck is a 5 speed manual trans and it is perfectly matched to the engine. What this means is it getting the fastest speed possible with that engines available amount of power. Lets say you put an imaginary 6th gear in that very same truck now the engine does not have the power to take advantage of the higher gearing and it lugs (lowers rpm) and it actually pulls your speed down lets say 10 mph because the gearing is not perfectly matched to the engine power any longer. You gear down to 5th where it matches perfectly your (rpm goes back up) and the speed goes back to the 10 mph faster again. In other words your at the perfect apex of engine power weight rolling resistance and gearing. Your sleds clutching and this is what Turk was so good at was to find that apex with each different sled depending on your wieght. Your clutching is constantly in effect gradually changing your gearing.

 

[TRUE BLUE SINCE 1980]

that I understand, but that Vector motor is turning at 8450 rpm. That sled can close a gap on an Apex going up hill. In the service manual it is saying it is making is power and torque at 8200 rpm.
To me there is extra there to turn the higher gear. The lower gear will just turn the motor harder. Unless the lower gear makes the clutch operate in area it cant with the higher gear.( Doesent the clutch become less efficient with increased speed? ) I am also thinking the clutch may need tip weight ,
would that correct ?

 

[Sled Dog]

On my sled that was clutched by Turk just by giving him numbers was running 10400 to 10500 but prior to his clutching was bouncing off the rev limiter, it is an 04 rx1 mountain. I changed my gearing from 21 / 40 to 24 / 40 mainly because I was not going to take the sled to the mountains. So the lower gearing needed for the mountain was robbing me of top end. After the gear change my rpms dropped to 10200 which is perfect for my sled and it still performs fine for the lower speeds. Adding clutch weight will bring your rpm down but so will gearing higher. If you can get your rpm to the 8200 range either way would be beneficial. Its a trial and error type of thing where the gearing may be beneficial at top end going with the added weights may be beneficial throughout the whole range of speeds especially on take off.

 

[TRUE BLUE SINCE 1980]

Now we are getting some where.... you are on an rx1, 4 cl , that runs in the 10,200+ rpm
I am on a 20010 F.I. vector .I am on the rev limiter at 8450 The 3 clinder pulls hard at 8100-8200 .Ypu say you went from a 21 to a 24 ,lowering rpm and increasing speed.....
I just want to try to go from a 24 to a 25.

 

[Sled Dog]

You will be fine as long as the engine can pull it through maybe a combination is in order gear up one try it if it still not enough then try a little more weight in primary.