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Old 03-15-2012, 10:23 AM   #61336
ER70S-2
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Originally Posted by procycle View Post
huh?

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Old 03-15-2012, 02:56 PM   #61337
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Tubes

Stick with natural rubber if you want to patch it, Butyl rubber sucks

Front
Rim Size21"
Tube Size2.75-21, 3.00-21
TypeMotorcycle Tube
Stem TypeTR-4 / TR-6
Stem OffsetStandard
Stem Diameter8mm
Stem DescriptionStraight metal stem


Rear
Rim Size17"
Tube Size4.50-17, 5.10-17
TypeMotorcycle Tube
Stem TypeTR-4 / TR-6
Stem OffsetStandard
Stem Diameter8mm
Stem DescriptionStraight metal stem


Front Tire Size ConversionsRear Tire Size Conversions
Metric Alpha Inch Metric Alpha Inch
80/90 MH90 2.50/2.75 110/90 MP85 4.00/4.75
90/90 MJ90 2.75/3.00 120/90 MR90 4.50/4.75
100/90 MM90 3.25/3.50 130/80 5.00/5.10
120/80 4.25/4.50 140/80 5.50/6.00
120/90 MR90 4.25/4.50 140/90 MU90 5.50/6.00
130/90 MT90 5.00/5.10 150/80 MV85 6.00/6.25
150/90 MV85 6.00/6.25
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Old 03-15-2012, 03:00 PM   #61338
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Originally Posted by Nibis View Post
Stick with natural rubber if you want to patch it, Butyl rubber sucks
What brands of tubes are natural rubber?
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Old 03-15-2012, 03:14 PM   #61339
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These are. I'm sure there are others too.
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Old 03-15-2012, 03:17 PM   #61340
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Originally Posted by badactor101 View Post
I purchased a couple sets of tires for the DR just in case, but what do I want for the rear tube? Is TR-6 the right choice? What's the difference from TR-4?

130/80 -17 if I go inches is 130/25.4 =5.12, so do I want a 4.50-5.10 x 17 tube? or a 5-5.10? Fave tubes for longevity? Does it really matter if I choose to spend 14 or 30 dollars? There's a bewildering assortment!

Also, are those folks running Shinko 700's using 130 rear and 3.0 in the front?

Thanks!
Bikemaster brand tubes are $9.07 in the 5.10 size. IRC are $12.67. I like the IRC tubes, I know the HD tubes are rubber. 3.00 tubes are $9.67...

I think MSR Gold tubes are natural rubber. I go with the regular ones though.

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Yep, here is the MSR stuff: http://www.bikebandit.com/msr-gold-m...al-rubber-tube

I just run the IRC or BikeMaster tubes though, I've tried the fancy tubes and they take a nail just as well as the cheaper tubes.. I usually don't mess with patching. But, IRC are rubber as far as I know.

sagedrifter screwed with this post 03-15-2012 at 03:31 PM
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Old 03-15-2012, 03:28 PM   #61341
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Talking

Here is a chart for tubes, shows some rubber options:

http://www.f650gs.crossroadz.com.au/...s/TubeInfo.pdf
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Old 03-15-2012, 03:55 PM   #61342
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Originally Posted by joefromsf View Post
What brands of tubes are natural rubber?
If you go on bike bandit or most any other parts stores, most of them will say.

I got an MSR Gold Heavy duty for the front, it is rubber, but they don't have a rear in our size, IRC is good, and I think rubber like sagedrifter said, but I think bikemaster is Butyl, but I have had good luck with them, just never patched one.

I don't like patching either, but like to have the choice incase I get more than one flat, since I only carry one of each extra tube.
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Old 03-15-2012, 04:06 PM   #61343
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IRC has a 130/80/17 HD tube thats rubber. I had one recently till a long nail sunk into it.

But, I bet many guys also run the 130/80/18 or 140/80/18 size, like the Kenda HD's.

IRC's get back ordered this time a year, I do run a 17" tube when I can get one. I went through 4 tubes this year already, all rear ones. I need to restock soon.
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Old 03-15-2012, 04:20 PM   #61344
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Tm40

Anyone notice their TM40 weeping gas out the overflow tubes. It's not much, and I'm thinking part of the cause is my short kickstand. If I lean the bike over on the stand to get the rear wheel off the ground, I can get a small puddle under the bike.

I also hit reserve on the highway today, pulled over and got gas, checked my mileage, only got 40 mpg, last tank was around 46.

The carb is setup like procycle sends it out, air box cut per procycle, stock air filter, and GSXR exhaust. I been trying to remember to turn off the petcock on the IMS tank and I don't see any signs of gas in my oil.

Some have said to drop the needle one slot, but I'm wondering if I should put a 145 main jet in.
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Old 03-15-2012, 04:53 PM   #61345
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Originally Posted by Nibis View Post
Some have said to drop the needle one slot, but I'm wondering if I should put a 145 main jet in.
The main jet doesn't have much effect on fuel economy unless you are riding around with the throttle pinned wide open. Experiment with the needle height first. Individual bikes differ in jetting requirement so some tuning may be required.
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Old 03-15-2012, 04:54 PM   #61346
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Quote:
Originally Posted by sagedrifter View Post
IRC has a 130/80/17 HD tube thats rubber. I had one recently till a long nail sunk into it.

But, I bet many guys also run the 130/80/18 or 140/80/18 size, like the Kenda HD's.

IRC's get back ordered this time a year, I do run a 17" tube when I can get one. I went through 4 tubes this year already, all rear ones. I need to restock soon.
How do you feel about reusing a tube that has no problem, just changing tires. I have a mefo I took off on count of a flat from a nail and was going to start reusing it on one of my sets of wheels that has a stock deathwing in need of replacement.
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Old 03-15-2012, 04:56 PM   #61347
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Quote:
Originally Posted by Nibis View Post
Anyone notice their TM40 weeping gas out the overflow tubes. It's not much, and I'm thinking part of the cause is my short kickstand. If I lean the bike over on the stand to get the rear wheel off the ground, I can get a small puddle under the bike.

I also hit reserve on the highway today, pulled over and got gas, checked my mileage, only got 40 mpg, last tank was around 46.

The carb is setup like procycle sends it out, air box cut per procycle, stock air filter, and GSXR exhaust. I been trying to remember to turn off the petcock on the IMS tank and I don't see any signs of gas in my oil.

Some have said to drop the needle one slot, but I'm wondering if I should put a 145 main jet in.
Reset your float level and check and clean the float needle ASAP. A little weep is normal, puddles are not! Don't ignore it.

I get 50 to 54 mpg with the needle at 3 and a 150 main. A 145 will be very lean on the top end if your air box is cut and your exhausted properly with a non-anchor muffler. You may want to verify your needle setting.

Remember, main jets don't matter as much as needle position and float height! I've thought about going to a 155, I would never go to a 145 with the cut air box and GSXR exhaust. That would be too lean say at 70 mph...

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Old 03-15-2012, 05:13 PM   #61348
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Originally Posted by procycle View Post
The main jet doesn't have much effect on fuel economy unless you are riding around with the throttle pinned wide open. Experiment with the needle height first. Individual bikes differ in jetting requirement so some tuning may be required.

Thanks, I'm not running it pinned LOL, so I guess I'll drop the needle one position
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Old 03-15-2012, 05:16 PM   #61349
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How do you feel about reusing a tube that has no problem, just changing tires. I have a mefo I took off on count of a flat from a nail and was going to start reusing it on one of my sets of wheels that has a stock deathwing in need of replacement.
I reuse tubes if I know they aren't to old, I air them up first to see if there are any questionable areas or leaks. I just reused my rear, no problems
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Old 03-15-2012, 05:18 PM   #61350
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Quote:
Originally Posted by drsmiley View Post
How do you feel about reusing a tube that has no problem, just changing tires. I have a mefo I took off on count of a flat from a nail and was going to start reusing it on one of my sets of wheels that has a stock deathwing in need of replacement.

I look them over and keep on using them till something is wrong usually. My original front stayed in till last year, so about 5 years and 4 tires. I changed it to a HD tube for that warm and fuzzy feeling. The original is my spare now.

My tubes usually die from tire spoons ie... me being too rough when I'm tired. Nails would take second place.

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