SuzukiSavage.com - Schwinn speedometer tire size converter

Kirk

Junior Member

Offline

SuzukiSavage.com
Rocks!

Posts: 89
Atlanta, GA
Gender: male

Schwinn speedometer tire size converter
08/10/08 at 18:09:02

Guys, & Gals;

I just stopped off and bought one of those Schwinn 12 function computers made for bicycles. I have seen where some of you have used it on the 650. The manual that came with the speedometer isnt very clear I was wondering if anyone knows what the front tire size of our bike is in millimeters? According to the booklet you need to input the tires diameter in millimeters. I still have the stock 100/90-19 IRC. Also any other installation tips would be greatly appreciated. Thanks everyone.

Back to top

IP Logged

Sandy Koocanusa Serious Thumper Offline Don't blame me. I didn't vote for him. Posts: 1878 Bigfork, MT Gender:	Re: Schwinn speedometer tire size converter Reply #1 - 08/10/08 at 18:14:17 I'm using one of those. I wish I could find the little book for it. It seems like I entered 26.5 inches. That was months ago though. There was a chart that converted inches to mm included with it. Believe it or not, I just held a tape measure up to the thing and eyeballed it. That got me within .003 mile.
Back to top	Savage: (adj)1. Wild 2. Uncivilized : Primitive 3. Ferocious 4. Cruel or merciless : Brutal --- Webster's. (n.) 1. A motorcycle named for its seat.--- Sandy's unabridged IP Logged

Skid Mark

Serious Thumper

Offline

FSO

Posts: 1216
Calgary, Alberta
Gender: male

Re: Schwinn speedometer tire size converter
Reply #2 - 08/10/08 at 18:24:06

The conversion rate is: 1 inch = 25.24mm

Sandy is right when he says you don't need to be spot on. You can calibrate the number after you run the unit and compare the speed readout to a known speed. I did mine to the bike speedometer because it was quick and easy. The next time I come across some hiway mile markers (Rare here north of the 49th) I'll recalibrate to that and have a more accurate readout.

Be sure to attach the sender securely as it is mounted close the the front wheel. Any failures there will have dire consequences.
Search the posts for install info. There's oodles of great ideas. That's how I figured out how to do mine. It is a very worthwhile exercise.

Back to top

2008 S40 , Windshield, Sigma Cycle Computer, after market backrest & luggage rack, Tkat Fork Brace, saddlebags, 12v power supply, Garmin GPS
'09 C50SE, '09 C90
Shoulda got into this years ago

IP Logged

verslagen1 YaBB Moderator ModSquad Offline Where there's a will, I want to be in it. Posts: 28905 L.A. California Gender:	Re: Schwinn speedometer tire size converter Reply #3 - 08/10/08 at 18:26:22 Skid Mark wrote on 08/10/08 at 18:24:06: The conversion rate is: 1 inch = 25.24mm Usually it's 1" = 25.4mm here in the states.
Back to top	Versey's Place Tech Section Index IP Logged

Kirk Junior Member Offline SuzukiSavage.com Rocks! Posts: 89 Atlanta, GA Gender:	Re: Schwinn speedometer tire size converter Reply #4 - 08/10/08 at 18:26:56 I will give that a shot as well. Thanks Sandy you are awesome!!!
Back to top	IP Logged

Skid Mark Serious Thumper Offline FSO Posts: 1216 Calgary, Alberta Gender:	Re: Schwinn speedometer tire size converter Reply #5 - 08/10/08 at 18:44:00 Good catch Verslagen. It is the same up here too.
Back to top	2008 S40 , Windshield, Sigma Cycle Computer, after market backrest & luggage rack, Tkat Fork Brace, saddlebags, 12v power supply, Garmin GPS '09 C50SE, '09 C90 Shoulda got into this years ago IP Logged

Kirk

Junior Member

Offline

SuzukiSavage.com
Rocks!

Posts: 89
Atlanta, GA
Gender: male

Re: Schwinn speedometer tire size converter
Reply #6 - 08/10/08 at 18:50:49

Thanks for your feedback Skidmark and Verslagen. I cant wait to give the new speedometer a try. I get tired of having to look down while driving. Forgot to mention I almost got side swiped today by a lady not paying attention! That seems to be the norm for me here in Atlanta the cagers always seem to veer over into the left hand lane just as I am about to pass them. I am going to find out if it is legal to shoot out a tire or two here when someone puts your life in danger. Angry

Sorry got a little off the topic but I was p*ssed off about it because it only takes one mistake from those morons to make someone else suffer.

Back to top

IP Logged

Paladin.

Serious Thumper

Offline

Hamster

Posts: 4929
Sunny Southern California
Gender: male

Re: Schwinn speedometer tire size converter
Reply #7 - 08/10/08 at 21:00:44

Kirk wrote on 08/10/08 at 18:09:02:

...According to the booklet you need to input the tires diameter in millimeters. I still have the stock 100/90-19 IRC.....

http://www.irc-tire.com/mce/

GS-18s tires are original equipment on the Suzuki LS650, selected because of their great overall performance and competitive pricing.

GS-18 : FRONT

100/90-19 M/C 57H WT 667 97 2.50 2.15

GS-18 : REAR

140/80-15 M/C 67H WT 612 128 MT3.50 MT3.00

IRC says your front tire should be 667mm diameter. (7mm shorter than my Metezler.)

Back to top

IP Logged

Kirk Junior Member Offline SuzukiSavage.com Rocks! Posts: 89 Atlanta, GA Gender:	Re: Schwinn speedometer tire size converter Reply #8 - 08/10/08 at 21:09:57 Good deal thanks for the breakdown Paladin.
Back to top	IP Logged

Kirk

Junior Member

Offline

SuzukiSavage.com
Rocks!

Posts: 89
Atlanta, GA
Gender: male

Re: Schwinn speedometer tire size converter
Reply #9 - 08/15/08 at 14:15:18

Well I finally received my square magnet from magnet man and installed it along with my schwinn speedo. WOW what a difference it has made! I no longer have to take my eyes completely off the road to see what my speed is. It is almost dead on with my original speedometer. I used the 26.5 conversion to 2117mm and it works like a charm. The only thing I find a little annoying is that if you gun the throttle it takes the computer a couple seconds to catch up with the speedy thumpers acceleration. All and All I would highly recommend this mod to anyone looking to be alittle safer on the road.

Back to top

« Last Edit: 08/20/08 at 09:08:28 by Kirk »

IP Logged

Kirk Junior Member Offline SuzukiSavage.com Rocks! Posts: 89 Atlanta, GA Gender:	Re: Schwinn speedometer tire size converter Reply #10 - 08/20/08 at 10:52:57 I forgot to snap a photo of the magnet on the rim but thats where it is I used liquid nails to help make sure it doesnt move and I mounted the transmitter right under the fender between the two bolts.
Back to top	IP Logged

WebsterMark Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 13327 Gender:	Re: Schwinn speedometer tire size converter Reply #11 - 08/20/08 at 13:04:27 I put on a Sigma 800 model after reading a few other sites about it. Installation was easy and like you said, it is super accurate. I put mine on the right side and ran the wire down the front brake cable. One nice feature is you can see your speed or time without looking down at your tank.
Back to top	IP Logged

leeran YaBB Newbies Offline I love YaBB 1G - SP1! Posts: 3 Princeton, NJ Gender:	Re: Schwinn speedometer tire size converter Reply #12 - 08/20/08 at 13:57:13 Good idea. I am looking for a speedo to put on my other bike. Do you guys know if this or any other bike computer is backlit? It might get iffy trying to use that at night. I've been looking at a Trail Tech Vapor but keep getting wallet spasms everytime i do.
Back to top	IP Logged

Kirk

Junior Member

Offline

SuzukiSavage.com
Rocks!

Posts: 89
Atlanta, GA
Gender: male

Re: Schwinn speedometer tire size converter
Reply #13 - 08/20/08 at 14:08:36

The Schwinn doesnt have a backlight on it. I was thinking of buying one with a backlight but my pockets werent full enough for me to buy the more expensive models. They do have some with backlights but I dont recall what models there are. Good luck on your search if I come across some I will post them on here for you though.

Back to top

IP Logged

WebsterMark Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 13327 Gender:	Re: Schwinn speedometer tire size converter Reply #14 - 08/20/08 at 16:02:20 The Sigma 800 is not backlit either.
Back to top	IP Logged