Chain vs. Sprocket size - Honda Shadow Forums : Shadow Motorcycle Forum

Reply
 
LinkBack Thread Tools
Old 06-02-2009, 10:40 AM   #1 (permalink)
Junior Member
 
RidehardVT's Avatar
 
Join Date: Mar 2009
Location: The sticks, Maine
Posts: 27
Default Chain vs. Sprocket size

Had my bike about a month now, starting to discover the little things that need attention and the things that need to be changed and improved but need a little help with the chain and sprocket

I know i need a new chain, the wear label and swing arm tell me and just looking at it you can see its spanked. What I want to do is replace both drive and driven sprocket and the chain. I'm new to owning a bike but understand a larger driven sprocket will give me a little more off the start, or a smaller drive sprocket do the same.

My bike is a 02 Shadow Spirit VT750DC its 17/42 Sprocket with 124 links on all the stock stuff. Should I go for larger in the back? And if so how many links do I add the the chain?

Where's everyone get their drive equipment? Ive been on bikebandit they got quite a collection.

Appreciate the feedback
__________________
2002 Honda Shadow Spirit VT750DC

"Sometimes your flush and sometimes your bust."

New to riding, ready to roll.

RidehardVT is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 06-02-2009, 01:43 PM   #2 (permalink)
Senior Member
 
Join Date: Aug 2005
Location: Elvis land
Posts: 1,949
Default

I see two options:

1. buy the new sprockets and use the old chain to see how long or short it is and then get the correct size.

or

2. Get the chain several links too long and shorten it to the desired length.

Good luck.
__________________
Three things that are not long hidden; the sun, the moon and the truth.

2005 Aero


1972 Honda XL250 Motorsport
2006 Rebel - daughter (Now gone)
1974 XL100
thunderglass is offline   Reply With Quote
Old 06-02-2009, 06:30 PM   #3 (permalink)
Member
 
Join Date: May 2008
Location: the REAL south where they serve sweet tea without asking
Posts: 322
Default

Most shadow owners go for smaller sprocket in back to give lower revs at highway speeds. You need to determine if you want faster off the line (larger in rear like you said), or faster top end (and lower revs at highway speed, which would be smaller rear). I just redid mine with stock chain/sprockets front and rear for about 170 from sprocketspecialist.com. They can usually help determine chain size too, but BB might do that as well.
Just make sure you get an o ring chain, they last much longer, and make sure the sprockets are hardened/tempered. some of the cheapo ebayers are not and wear out quick, which will also wear your chain out quick.

You can also change the front sprocket to a different tooth count to mess with the gearing.
NewAgeRoman is offline   Reply With Quote
Old 06-02-2009, 08:53 PM   #4 (permalink)
Member
 
Join Date: Oct 2005
Location: Wilmington, NC
Posts: 202
Default

The Drive sprocket on the shadow 750 can only be replaced smaller. If you get a larger sprocket ( more than 17 teeth ) it will run into a interference problem with the shift rod. It's best to leave the drive sprocket at 17 teeth and alter the rear sprocket.

Lowering the rear sprocket number of teeth will reduce engine RPM at highway speed but also decrease acceleration.

Increasing the number rear sprocket teeth will increase acceleration but lower top end speed.
__________________


"I don't want a pickel ...just want to ride on my motor cicle..."
"
http://911flag.org/
Richard L is offline   Reply With Quote
Old 06-02-2009, 10:03 PM   #5 (permalink)
Super Moderator
 
Phil's Avatar
 
Join Date: Jan 2004
Location: Sterling Heights, Michigan
Posts: 4,758
Default

Just want to add something to what Richard L said about keeping the drive sprocket at 17 teeth.

If you go too small on the front sprocket, your chain could bind up as it tries to wrap around the smaller front sprocket. Running a smaller front sprocket puts a greater strain on the chains links.
Phil
__________________

1973 Yamaha RD-350


Sterling Heights, Michigan
Phil is offline   Reply With Quote
Old 06-02-2009, 10:09 PM   #6 (permalink)
Senior Member
 
Join Date: May 2008
Location: Right side up
Posts: 1,215
Default

www.billski182.com

Call this guy. Tell him what you need. He can hook you up for a good price. Sign up over at www.shadowriders.net and then let him know you are a member and he will give you a discount.

I would go for a 39 tooth rear unless you plan to ride strictly solo. If that is the case then I would get a 37 tooth and enjoy a smooth highway ride.
shadow247 is offline   Reply With Quote
Old 06-03-2009, 01:14 PM   #7 (permalink)
Junior Member
 
RidehardVT's Avatar
 
Join Date: Mar 2009
Location: The sticks, Maine
Posts: 27
Default

Well thanks for the input guys, now I'm second guessing the larger driven sprocket hahah.. probably going to stick to stock since I really don't care to sacrifice eaither and my bike is pretty snappy off the start as it is.. Has anyone else on here gone larger? like a 44 or 45 instead of the 42? I'm curious, my bike tops out around 93-94 MPH on straight highway, for a cruiser with no windsheild that seemed pretty quick to me but it was about 1,200 miles ago since i did that too

I got a few weeks before I'm gonna spend for it so I'll do a little price shopping. billski182 does have some nice stuff for reasonable prices no dought about that. The taillight kit he's got will be my next investment. with any luck before the summer is out I will have new blinkers taillight and a slitherin seat
__________________
2002 Honda Shadow Spirit VT750DC

"Sometimes your flush and sometimes your bust."

New to riding, ready to roll.

RidehardVT is offline   Reply With Quote
Old 06-04-2009, 07:20 AM   #8 (permalink)
Member
 
Join Date: Oct 2005
Location: Wilmington, NC
Posts: 202
Default

I remove the 41 tooth rear stock sprocket and installed a 38 toothed sprocket. The result was like getting another gear on the top end. By this I mean that my (after market tack) now reads the same RPM at 60 mph that it use to read at 50 mph. This makes for smoother/less vibration @ moderate highway speeds. The interesting thing is that now in 5th gear my bike has a WOT of 90 mph where as in 4th gear my WOT is just over 100 mph. Interesting how the bike is faster in 4th than 5th.
__________________


"I don't want a pickel ...just want to ride on my motor cicle..."
"
http://911flag.org/
Richard L is offline   Reply With Quote
Old 06-04-2009, 09:39 AM   #9 (permalink)
Super Moderator
 
Phil's Avatar
 
Join Date: Jan 2004
Location: Sterling Heights, Michigan
Posts: 4,758
Default

Quote:
Originally Posted by Richard L
I remove the 41 tooth rear stock sprocket and installed a 38 toothed sprocket. The result was like getting another gear on the top end. By this I mean that my (after market tack) now reads the same RPM at 60 mph that it use to read at 50 mph. This makes for smoother/less vibration @ moderate highway speeds. The interesting thing is that now in 5th gear my bike has a WOT of 90 mph where as in 4th gear my WOT is just over 100 mph. Interesting how the bike is faster in 4th than 5th.
Richard,
Yeah, I think the final drive gearing with the smaller rear sprocket puts the engine in it's most usable part of the power band when you're cruising on the freeway.

With the stock sprocket, freeway riding puts the engine near the top end of the power band with little or no reserve power. The smaller rear sprocket lowers the rpm's to the point where there's still some "Umph" left to pass, even when you're doing +70 mph.

I think they should have used a 38T rear sprocket right out of the factory. I've got the 37T rear sprocket on mine and love it! At 70mph, I don't even have to downshift to pass a car; just twist the throttle and it pulls hard............
Phil
__________________

1973 Yamaha RD-350


Sterling Heights, Michigan
Phil is offline   Reply With Quote
Old 06-04-2009, 10:43 PM   #10 (permalink)
Member
 
Join Date: Jun 2008
Location: San Antonio TX
Posts: 710
Default

I also read here and don't remember who, but a spring of sort was also changed can anyone share Ideas as to why or which. It was the first time I read that on this same topic.
__________________

03 VT750DCB Spirit: Commuter
Giddaltti is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -4. The time now is 08:23 PM.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.
Motorcycle News, Videos and Reviews
Honda Grom Forum Harley Davidson Forum Honda 600RR Kawasaki Forum Yamaha R6 Forum Yamaha FZ-09 Forum
1199 Panigale Forum Roadglide Forum Honda CBR1000 Forum Vulcan Forum Yamaha R1 Forum Yamaha R3 Forum
Ducati Monster Forum Harley Forums Honda CBR250R Forum ZX10R Forum Star Raider Forum Yamaha Viking Forum
Suzuki GSXR Forum V-Rod Forums Honda Shadow Forum Kawasaki Motorcycle Forum Star Warrior Forum KTM Duke 390 Forum
SV650 Forum BMW S1000RR Forum Honda Fury Forum Kawasaki Versys Forum Drag Racing Forum Ducati 899 Panigale Forum
Suzuki V-Strom BMW K1600 Triumph Forum Victory Forums Sportbikes BMW NineT Forum
Volusia Forum BMW F800 Forum Triumph 675 Forum MV Agusta Forum HD Street Forum Suzuki GW250 Forum
Yamaha Motorcycles Victory Gunner Forum Honda Vultus Forum HD LiveWire Forum