Recent Topics
when will they start making batteries last longer?
by motor_oil_madman
Today at 12:11 AM
Are older Toyota trucks popular in Mexico?
by Stag
Yesterday at 10:33 PM
Honda dealers standard OC is 5w-20 blend
by NormanBuntz
Yesterday at 10:12 PM
Caprice Burnout
by ls1mike
Yesterday at 09:49 PM
Harvey cars parked
by gfh77665
Yesterday at 09:34 PM
Overlanding the Pennsylvania Wilds
by SKVenture
Yesterday at 09:28 PM
People adverse to weekend plans. Annoying.
by Kurtatron
Yesterday at 09:25 PM
2000 4Runner - Walker vs Eastern Cats
by SKVenture
Yesterday at 09:24 PM
Lower cost wheel source 2017 CR-V
by Pablo
Yesterday at 08:26 PM
VOA Red Line 15w40 HDEO
by claluja
Yesterday at 07:02 PM
"Life Hacks" video on YouTube full of BAD advice
by SirTanon
Yesterday at 06:36 PM
Opinions on buying a hail damaged/ repaired car
by Blue_Goose
Yesterday at 06:34 PM
Euro Cars Used to be Very Reliable
by Speak2Mountain
Yesterday at 06:24 PM
Historical Perspective
by Ducked
Yesterday at 06:15 PM
Fresh fluid film
by buck91
Yesterday at 05:41 PM
Wanger TQ's finally squeaking
by buck91
Yesterday at 05:34 PM
Email hosts?
by buck91
Yesterday at 05:31 PM
Toyota Tundra 4.6 vs. 5.7
by zfasts03
Yesterday at 03:45 PM
iPhone Wallet alternatives for Android
by Alfred_B
Yesterday at 02:59 PM
2017 Winter Tire Tests
by SubLGT
Yesterday at 01:41 PM
Newest Members
notso5, SherriWacker, garyts95, phillipgolden, Ebuks
62887 Registered Users
Who's Online
25 registered (Brad_C, car51, 4WD, B320i, 5 invisible), 919 Guests and 11 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
62887 Members
66 Forums
271145 Topics
4496837 Posts

Max Online: 3590 @ 01/24/17 08:07 PM
Donate to BITOG
Page 1 of 2 1 2 >
Topic Options
#2593828 - 04/08/12 06:08 PM Sprockets JT vs Sunstar
Robenstein Offline


Registered: 12/23/09
Posts: 5516
Loc: Central IA
Hey, just looking at doing a sprocket swap on a 99 Magna 750 for a friend. She bought it and the guy geared it for more acceleration, but it is getting horrible mileage now since she rides in out of town a lot. Got a new x ring chain for it, but I see that JT and Sunstar both make a decent selection of sprockets for it. Anyone ever have a bad experience with either? Looks like JT makes a few more options, but I thought Id see who here had some experiences with them on bigger bikes.
_________________________
2011 Triumph Speedmaster
1986 Chevy Monte Carlo SS
1970 Chevy Nova
2006 Scion TC

Top
#2593838 - 04/08/12 06:26 PM Re: Sprockets JT vs Sunstar [Re: Robenstein]
Quattro Pete Offline


Registered: 10/30/02
Posts: 34140
Loc: Great Lakes
I am not liking the 17-tooth JT front sprocket that I got for my Vulcan. It dropped the RPMs as it should have (factory sprocket is 16T), but it causes more drive train noise and results in more vibration that can be felt through the footpegs. The JT one does not have rubber dampers built into it like the factory sprocket does. I am going back to the stock sprocket next week.
_________________________
'02 530i (Edge HM 10W-40)
'15 Q5 3.0T (Edge 5W-40)

Top
#2593887 - 04/08/12 07:35 PM Re: Sprockets JT vs Sunstar [Re: Robenstein]
Robenstein Offline


Registered: 12/23/09
Posts: 5516
Loc: Central IA
I have used both on smaller 250 cc bikes. The current ones on this bike are sunstar. I was also thinking of going up a tooth on my front sprocket on my Triumph.
_________________________
2011 Triumph Speedmaster
1986 Chevy Monte Carlo SS
1970 Chevy Nova
2006 Scion TC

Top
#2593894 - 04/08/12 07:44 PM Re: Sprockets JT vs Sunstar [Re: Robenstein]
Trav Offline


Registered: 11/20/06
Posts: 16433
Loc: MA, Mittelfranken.de
I have used them both in big bikes and had no trouble with either. Both went over 20,000 Km with and x ring chain which is good considering these bikes produce 165-185HP right out of the box.
_________________________
ASE L1, Master. Deutsch Meisterbrief.

Top
#2594245 - 04/09/12 08:19 AM Re: Sprockets JT vs Sunstar [Re: Robenstein]
Smoky14 Offline


Registered: 04/23/03
Posts: 1269
Loc: Nowhere NM
The biggest problem with cheap sprokets is not being tapered to allow smooth engagement of the chain. Some have a 90 angle between the side and the tooth tip and results in noise, and if not aligned can actually pull the counter shaft out of the case. You'd think it would break the chain first, but not in my experience.
_________________________
99 Acura 2.3CL 5speed MT
12 Ford Fusion 2.5S 6speed MT
05 Suzuki Bandit 1200.

Top
#2595549 - 04/10/12 12:26 PM Re: Sprockets JT vs Sunstar [Re: Quattro Pete]
rrounds Offline


Registered: 07/05/07
Posts: 864
Loc: SACRAMENTO, CA
On one of my bikes I went up 2 teeth to 16 on the front sprocket(that is the same as taking 7 teeth off the back sprocket 14/48) and my rpm's went down as did any vibration I had in the foot pegs and handle bars. My gas mileage went up but I could not accelerate as fast in 5th gear(that is why they put 4,5 or 6 gears in bikes) All I had to do was down shift and off I would go.

ROD
_________________________
'06 S2000
'00 SSEi sold at 252k miles
'08 Ford F53 V10
'13 Jeep Sahara 2 door

Top
#2595957 - 04/10/12 08:32 PM Re: Sprockets JT vs Sunstar [Re: Robenstein]
Mackelroy Offline


Registered: 12/03/04
Posts: 979
Loc: Florida /Texas
Sunstar is an OEM manufacturer, JT is not, while JT may be okay I've seen instances where they are not machined properly.

If you want precision guaranteed, SUNSTAR

Top
#2596671 - 04/11/12 02:53 PM Re: Sprockets JT vs Sunstar [Re: Robenstein]
sunruh Offline


Registered: 06/28/05
Posts: 1880
Loc: Cedar Park, TX
i've run sunstar. pretty decent. now i only run Ironman (also sold as MSR heavy duty) but they are not for all bikes make/models.

and of course part of keeping a sprocket alive is making sure the chain is perfect. which is its own can of worms.
_________________________
motorcycle oil myth buster

Top
#2597093 - 04/11/12 09:16 PM Re: Sprockets JT vs Sunstar [Re: Robenstein]
Robenstein Offline


Registered: 12/23/09
Posts: 5516
Loc: Central IA
Normally Id swap the chain as well, but it has SUPER low miles on it. I think I will try the Sunstar and if its not enough for her I can drop a few teeth on the back with a JT.
_________________________
2011 Triumph Speedmaster
1986 Chevy Monte Carlo SS
1970 Chevy Nova
2006 Scion TC

Top
#2597846 - 04/12/12 04:33 PM Re: Sprockets JT vs Sunstar [Re: Robenstein]
rrounds Offline


Registered: 07/05/07
Posts: 864
Loc: SACRAMENTO, CA
Here is a good site to play with your gearing and not cost you a dime.
http://www.gearingcommander.com/

ROD
_________________________
'06 S2000
'00 SSEi sold at 252k miles
'08 Ford F53 V10
'13 Jeep Sahara 2 door

Top
#2597922 - 04/12/12 06:13 PM Re: Sprockets JT vs Sunstar [Re: Robenstein]
Robenstein Offline


Registered: 12/23/09
Posts: 5516
Loc: Central IA
Yeah the JT and Sunstar sites have gearing info on theirs as well. It does help though when making a choice.
_________________________
2011 Triumph Speedmaster
1986 Chevy Monte Carlo SS
1970 Chevy Nova
2006 Scion TC

Top
#2598178 - 04/12/12 11:02 PM Re: Sprockets JT vs Sunstar [Re: Robenstein]
rraiderr Offline


Registered: 11/26/06
Posts: 419
Loc: Dante's Inferno
AFAM and Renthal make some stout sprockets.

We have had 0 issues with them at the track.
_________________________
2015 GSX-R1000
2015 RMZ-450
2013 DRZ-400SM

Top
#2599256 - 04/14/12 08:55 AM Re: Sprockets JT vs Sunstar [Re: Quattro Pete]
vortex9 Offline


Registered: 09/23/08
Posts: 24
Loc: Canada
Originally Posted By: Quattro Pete
I am not liking the 17-tooth JT front sprocket that I got for my Vulcan. It dropped the RPMs as it should have (factory sprocket is 16T), but it causes more drive train noise and results in more vibration that can be felt through the footpegs. The JT one does not have rubber dampers built into it like the factory sprocket does. I am going back to the stock sprocket next week.


I had the same experience with aftermarket sprockets. I went back to oem because of the rubber damper. It does make a difference if you spend a lot of time on the highway.

Top
#2599989 - 04/15/12 06:44 AM Re: Sprockets JT vs Sunstar [Re: Robenstein]
Mackelroy Offline


Registered: 12/03/04
Posts: 979
Loc: Florida /Texas
Most the rubber damped OEM front sprockets are made by Sunstar, if you buy a generic sunstar it wont have the rubber dmaping.

Personally I always bought the oem fronts, and after market rears. I ran aluminum rears for 20 years. I went back to steel and the longevity is Five fold over aluminum, Like that iron man Sunruh mentioned.

But the weight savings of aluminum is not worth it, the longevity and your pocketbook will be alot happier with steel.

Top
#2600836 - 04/16/12 09:13 AM Re: Sprockets JT vs Sunstar [Re: Robenstein]
sunruh Offline


Registered: 06/28/05
Posts: 1880
Loc: Cedar Park, TX
yeah i run oem fronts and high quality steels back.

i can put 3 - 4 years of racing on a ironman rear where alum is about 1/2 a season. oh and get any kind of dirt/grim/mud/sand on alum and its toast!
_________________________
motorcycle oil myth buster

Top
Page 1 of 2 1 2 >