phazerman2000
Veteran
Changed the gearing on my Nytro RTX to 23/39. It was cheaper to change the chain and top gear rathe than the top and bottom to keep the stock chain. The top end is much better, about 7 m.p.h., with the same snap. As a matter of fact, the acceleration is better than the low gearing. As far as the dream-meter, it is pretty close now. Rode beside a buddies APEX, he was reading 108 and I was reading 97...what a differance! I have seen 108 on my speedo! Could only see 100-101 with the stock gearing.
Snoxracer242
Expert
phazerman2000 said:
It shouldn't matter what you change the gearing to, your sled should still read the correct speed. Because the speedometer pick up is off the drive shaft.
snownutz
Expert
I think he's saying that the Nytro speedo is more accurate than the Apex or less slippage now, Hey phazerman do you still have stock clutching and whats your ride weight.Thanks 
phazerman2000
Veteran
Yes, stock clutching and my full dress weight is around 265! I know the speedo pulls off the driveshaft!!!
NB-NYTRO
TY 4 Stroke Junkie
phazerman2000 said:
Thats some good results... I didn't get the results I wanted.. I only ever seen 96MPH.. I suspect my belt might be slipping though. I hope to dial in my clutch kit better
How many miles on your sled?
phazerman2000
Veteran
my sled has 700 miles on it.
Race_blue60
Pro
so if i read this right you're running 23/39 and a 70? link chain or stock chain , all with stock clutch settings
4bangpower
Extreme
22/39 gearing is definately better than stock 23/39. Better acceleration and top end speed for sure. I gained a solid 10 mph going to 22/38 gearing over stock.
4bangpower
Extreme
Sorry, stated stock gearing is 23/39....correction, stock gearing is 21/39.
Race_blue60
Pro
so 4bang youre running 22/38 or 22/39 and what link chain also riding weight
4bangpower
Extreme
Race_blue60, 22/38 w/ 68 link chain. I weigh 165# w/o gear on. Sled rips with this combo of gearing. Heavier riders (over 210 ibs.) should probably stick with 22/39 gearing.
Race_blue60
Pro
lol alrite...sorry bout the confusion but with so many people having so many different results im trying to narrow in on one for me
yami ryder
Pro
I just installed my 22 gear and stage 2 clutch kit from ulmer, with gear I weigh 210 lbs. Ialso have the excell pipe and header with 10ek's and 192 woodys megabite 1.325 studs. When stock with just the plugs I could pull my buddys 800 rev 1/2 to a sled up to 90+ mph, going up north soon and looking to do another comparison run with the rev.
dubla92
Pro
Good to here some good about gearing up! I posted on a thread the other day and everybody seemed to think I was crazy and my sled would be slower! I thought they were nuts! Here is the thread.
http://www.ty4stroke.com/viewtopic.php?t=53493
http://www.ty4stroke.com/viewtopic.php?t=53493
DC5
TY 4 Stroke Junkie
On a 2500' plowed strip a stock nytro ran 103.5mph with stock clutching and gearing. The sled was then geared 23/39 and was able to run 111-112mph pass after pass. After the gearing change he raced the sled against a stock nytro and he would pull a couple lengths out of the hole and then keep pulling . I think the gearing helps the sled hookup and control track spin. These were the results on that day with that sled, it may not work for everyone.
