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30 tooth front Sprocket
- Thread starter Trumpybob
- Start date
30 TOOTH SPROCKET
Last weekend I went for a ride after putting on the 30 teeth sprocket It seems that at low speeds I have to down shift so the engine is not lugging. I put on the original exhaust and went a total of 156 miles and put in 4 Gallons of gas in the gas tank. That comes out to 39 MPG. Believe it or not that is the truth. Then I put on the after market exhaust and the mileage droped to 36 MPG. I lost 300 RPM's by putting on the 30 tooth sprocket. Not like it is advertised for 400 RPM's.:2thumbs: More than satisfied.:yes:
Last weekend I went for a ride after putting on the 30 teeth sprocket It seems that at low speeds I have to down shift so the engine is not lugging. I put on the original exhaust and went a total of 156 miles and put in 4 Gallons of gas in the gas tank. That comes out to 39 MPG. Believe it or not that is the truth. Then I put on the after market exhaust and the mileage droped to 36 MPG. I lost 300 RPM's by putting on the 30 tooth sprocket. Not like it is advertised for 400 RPM's.:2thumbs: More than satisfied.:yes:
irish2themax
New member
I have all the tech savvy of a rock. What does the number of teeth do?
bone crusher
Alignment Specialist
I see 5500 at 75mph...
ataDude
Mod Maniac
More teeth on the front will lower the engine RPMs for any given speed. Going from a 28 to a 30 should lower the revs by about 7%.
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Raptor
New member
You are EXACTLY right!! However, for me, I would not do it for a couple of reasons. First, Lamont makes a good point about reliablity of the after market part.
Second, unlike many of you, I am actually groovin on the performance aspect of the experience. YES, I said performance experience! The low end torque and power band of this Rotax V990 is pretty darn good and delivers a great punch. Not Corvette punch, but prety close. I have gone from stop to 100+ in a very short time, and it's impressive enough for me to not want to change it.
Cornering is pretty fun too, tho I am anxiously awaiting delivery of my Evoluzione Sway bar; I'm still diving the front end even tho I have my shock pre-load tweaked to max. I am kinda big and stock aint gonna do it!
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Raptor
New member
I need to clarify something; It appears that from what I have read that "many of you" are super touring monsters! You guys are riding hundreds of miles ina single shot, and many are RT owners. I admire that!
However, Iam just an old racer and I can't seem to get on something (no matter what it is) and not want to go all out! :doorag: I can't help myself!!
Got nothin but love for you tour monsters, man! Ride on...
However, Iam just an old racer and I can't seem to get on something (no matter what it is) and not want to go all out! :doorag: I can't help myself!!
Got nothin but love for you tour monsters, man! Ride on...
AMTJIM
New member
5000 @ 80 refers to the stock sport v-twins I rode. I gave many of my machines sprocket changes for their purpose, dropping RPM's and increasing mileage for sport tourers happened a few times. 5500~6000 @ 75~80 feels weird. Funny how the body tunes to resonant frequency. I don't care if a down shift change is necessary to perform, I find myself always thinking about refueling on this machine. The placebo effect of an extra 5 miles + per gallon, I like it.
Raptor
New member
True that. I hear where you are coming from. I can defintely see where the change would suit most riders. I just like grabbing throttle and getting that pull, man! The rev and compression aspect of "spirited" cornering is esential for me as well. Yet another reason why I will not change out.
It's just so cool when you pick your line, set her up, and just use the compression brake, smooth throttle and hang yer butt out there and attack the turns with very little brake. And then on exit grab that throttle again and scat out with authority. It's a rush!!
I will calm down eventually, but right now it's just FUN!!
wtwing15
New member
My wife has a 30 tooth sprocket on her spyder we find it uses less petrol but you have to change down gears more often because the sprocket decreases the reves by 500 rpm
YPILOT
Member
There was talk from Mel's awhile back about a 27 tooth gear which would increase low end performance. You may want to contact them and inquire about that.
True that. I hear where you are coming from. I can defintely see where the change would suit most riders. I just like grabbing throttle and getting that pull, man! The rev and compression aspect of "spirited" cornering is esential for me as well. Yet another reason why I will not change out.
It's just so cool when you pick your line, set her up, and just use the compression brake, smooth throttle and hang yer butt out there and attack the turns with very little brake. And then on exit grab that throttle again and scat out with authority. It's a rush!!
I will calm down eventually, but right now it's just FUN!!
Freddy
Active member
Hey wtwing, is that the one you had here for sale or another one?
http://www.spyderlovers.com/forums/showthread.php?t=18909
wtwing15
New member
Hi it is another one I got one for the RT but it dosnt go as well on the RT
It is still for Sale
Raptor
New member
There was talk from Mel's awhile back about a 27 tooth gear which would increase low end performance. You may want to contact them and inquire about that.
Don't tease me like that... :roflblack:
NancysToy
Motorbike Professor
It is only a few percent change. It should not affect the charging that much.The question I have concerns the charging system. Since the output is achieved at higher rpm has the change of sprocket affected or created any charging issues?
Freddy
Active member
bolt update
After 8000km I checked the torque on the bolt today - still as tight as the day I put the 30 tooth pulley on 8 months ago - thankfully.
After 8000km I checked the torque on the bolt today - still as tight as the day I put the 30 tooth pulley on 8 months ago - thankfully.
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