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-   -   XR650L: Spud Rollers for Your Chain Guide (http://www.advrider.com/forums/showthread.php?t=694545)

Spud Rider 06-04-2011 10:45 PM

XR650L: Spud Rollers for Your Chain Guide
 
I have never liked the chain guide slider on my XR650L. :dood Therefore, I decided to replace the chain guide slider with two chain rollers. :nod After employing two different, commercial chain rollers, I decided to experiment with polyurethane tubing. You can read the details of my chain roller modification in the following thread. :deal

http://www.advrider.com/forums/showthread.php?t=667646

My polyurethane Spud Rollers have proven to be far superior to the commercial chain rollers I have experimented with in my chain guide. :D For example, here is a photograph of a sealed bearing chain roller, and an unsealed, Delrin chain roller after 2,400 miles of wear in my chain guide.

http://i442.photobucket.com/albums/q...eXR650L003.jpg

The chain guide is a dirty, harsh environment for chain rollers. Besides rolling friction, the drive chain impacts the chain rollers, subjecting them to further abuse. Therefore, it is not surprising my sealed bearing chain roller fractured after 3,800 miles of wear. :deal At that point I decided to replace the sealed bearing chain roller with another unsealed, Delrin chain roller. :nod

http://i442.photobucket.com/albums/q...nroller023.jpg

The unsealed, Delrin chain rollers have sustained chain impact better than the sealed bearing chain roller. However, rolling friction from the drive chain still wears the commercial, unsealed chain rollers at an unacceptable rate. In the following photograph, the front chain roller, on the left, has 1,200 miles of wear. The rear chain roller, on the right, has 5,000 miles of wear. :deal

http://i442.photobucket.com/albums/q...looding006.jpg

After observing this wear, I decided to experiment with my polyurethane Spud Rollers. I am pleased to report my polyurethane chain rollers are performing superbly; they are far superior to the commercial chain rollers I have previously employed in my chain guide. :D After 1,850 miles of service in my chain guide, my Spud Rollers are showing virtually no wear. :deal

http://i442.photobucket.com/albums/q...5KMiles010.jpg

I bought my polyurethane tubing from a local, industrial supply shop.

If you decide to perform my chain roller modification, you will also need to purchase two, 3/8 x 2-inch, hex head bolts, two 3/8-inch, nyloc nuts. These bolts, nuts and washers are readily available in almost every local hardware store. :nod

If you are interested in buying one or more of my Spud Rollers, please send me a personal message, and we can arrange for payment. I accept either personal checks, or payment via my PayPal account. :nod

Spud :wave

hogdoc 06-05-2011 08:00 AM

That's cool spud, where locally did you find the poly tubing? Are we locally in the same area, Boise/Meridian?

Spud Rider 06-05-2011 11:54 PM

Quote:

Originally Posted by hogdoc (Post 16088149)
That's cool spud, where locally did you find the poly tubing? Are we locally in the same area, Boise/Meridian?

I live on the other side of the state, Doc. :nod I prefer to keep my material source confidential. :deal

Spud :wave

Spud Rider 06-16-2011 09:07 PM

Today I inspected my Spud Rollers. After experimenting with two different types of commercial chain rollers, I installed my polyurethane Spud Rollers in my chain guide. :nod Here is a photograph of the "left" side of my Spud Rollers after 3,000 miles of wear. :deal

http://i442.photobucket.com/albums/q...splines001.jpg

Here is a photo of the top view of my Spud Rollers. :deal As you can see, my Spud Rollers have virtually no wear after 3,000 miles of riding. :D

http://i442.photobucket.com/albums/q...splines008.jpg

My Spud Rollers are virtually maintenance free, and have survived a lot of punishment in the dirty, harsh environment of the chain guide. :evil For the purposes of comparison, here is a photo of two, commercial, chain rollers after 2,400 miles of wear in my chain guide. :deal

http://i442.photobucket.com/albums/q...eXR650L003.jpg


Spud :wave

Spud Rider 06-16-2011 10:16 PM

Installing my Spud Rollers requires a slight modification of your XR650L chain guide. I recommend you follow this procedure.

Spud Roller Installation Guide

1) For each pair of rollers purchase the following items from a local hardware store.

Two 3/8 x 2-inch, hex head bolts (any grade metal is fine)
Two 3/8-inch nyloc nuts

2) Loosen the two bolts, and remove the chain slider from your chain guard.

3) Using a 3/8-inch drill bit, enlarge the two holes in the chain guard to 3/8-inch.

4) Install the polyurethane rollers using the hardware purchased in step 1, placing the nyloc nuts on the wheel side of the chain guide.

5) Tighten the bolts securely, but not so tight you can't rotate the Spud Rollers by hand.

6) Every few hundred miles, inspect the bolts to ensure they are still tight.


If you are interested in buying one or more of my Spud Rollers, please send me a personal message, and we can arrange for payment. I accept either personal checks, or payment via my PayPal account. :nod


Spud :wave

michael.brat 06-21-2011 10:47 PM

I'm glad you're selling these! I was just thinking about asking you when I got back from my mini trip.
How do I pay? Send me some!

Btw, can you post a picture of the spud roller set up installed in the chain guide? I'd like to get a visual. Do you find that the bolts tend to loosen? I'm wondering if thinner bolts with a 5/16 sleeve would be a better permanent solution so it can be fully tightened. Or maybe I'm just over thinking it.

:beer
Mike B

Spud Rider 06-21-2011 11:14 PM

Quote:

Originally Posted by michael.brat (Post 16224583)
I'm glad you're selling these! I was just thinking about asking you when I got back from my mini trip.
How do I pay? Send me some!

Btw, can you post a picture of the spud roller set up installed in the chain guide? I'd like to get a visual. Do you find that the bolts tend to loosen? I'm wondering if thinner bolts with a 5/16 sleeve would be a better permanent solution so it can be fully tightened. Or maybe I'm just over thinking it.

:beer
Mike B

Thank you, Mike. :D Please send me a personal message, and I will give you the details.

Tomorrow I will take some photos of my installed Spud Rollers, and the mounting hardware. :nod The bolts holding my Spud Rollers have never loosened; the nyloc nuts hold the bolts very securely. I think an inner sleeve would probably add more friction to the Spud Roller assembly, but I certainly wouldn't mind if someone decided to experiment with this configuration. :nod

My Spud Rollers don't require any lubrication, or any maintenance whatsoever. :D Just tug on the bolts every 200 miles or so, to make sure they are tight. However, I have now ridden over 3,700 miles with my Spud Rollers installed, and the bolts have never loosened. :nod

Spud :wave

Spud Rider 06-24-2011 12:30 PM

Quote:

Originally Posted by michael.brat (Post 16224583)
...Btw, can you post a picture of the spud roller set up installed in the chain guide? I'd like to get a visual...

As promised, here are some photos of my Spud Rollers in their natural habitat, Mike. :D The chain guide is a dirty, harsh environment. :deal I have discovered my Spud Rollers reduce friction on the drive chain, especially in muddy environments. :nod

http://i442.photobucket.com/albums/q...Shinkos005.jpg

http://i442.photobucket.com/albums/q...Shinkos006.jpg

http://i442.photobucket.com/albums/q...Shinkos009.jpg

In addition, my Spud Rollers are virtually maintenance free, only requiring a simple, quick, occasional inspection. Every 200 miles or so, merely tug on the bolts to ensure they are tight, and spin the rollers with your fingers. :nod

http://i442.photobucket.com/albums/q...Shinkos060.jpg

http://i442.photobucket.com/albums/q...Shinkos066.jpg

http://i442.photobucket.com/albums/q...Shinkos094.jpg

Quote:

Originally Posted by michael.brat (Post 16224583)
...Do you find that the bolts tend to loosen? I'm wondering if thinner bolts with a 5/16 sleeve would be a better permanent solution so it can be fully tightened. Or maybe I'm just over thinking it...

I'm pleased to report the mounting bolts have never loosened on my Spud Rollers, Mike. :D Feel free to experiment with sleeves if you wish. :nod However, I recommend using 3/8-inch bolts, without sleeves. If you try my recommended installation, I am confident you will discover it is very rugged, and reliable. I also believe my recommended installation will gather less dirt, and induce less friction than an installation employing sleeves. :deal

http://i442.photobucket.com/albums/q...Shinkos012.jpg

Spud :wave

michael.brat 06-25-2011 02:16 PM

Quote:

Originally Posted by Spud Rider (Post 16244817)
As promised, here are some photos of my Spud Rollers in their natural habitat, Mike. :D ...

Perfect, thanks Spud!

Mike B

tinbasher 06-26-2011 07:48 AM

Chain roller
 
Gotta go look at Katie see if I can flange up your rollers. Nice simple solution

Spud Rider 07-01-2011 09:11 AM

Yesterday I inspected the Spud Rollers in my chain guide. After 4,700 miles of wear, here is a photograph of the port side of my polyurethane Spud Rollers.

http://i442.photobucket.com/albums/q...7KMiles003.jpg

Here is a top view of my Spud Rollers after 4,700 miles of wear.

http://i442.photobucket.com/albums/q...7KMiles007.jpg

After 4,700 miles, a tiny bit of wear has appeared on a small portion of the rear Spud Roller. Both polyurethane rollers are in excellent condition, and I am still very pleased with their performance, and durability. :D

Spud :wave

Spud Rider 07-01-2011 09:32 AM

Yesterday I decided to change the mounting hardware for the Spud Rollers in my chain guide. :nod For the last 4,700 miles, I have been using two, 5/16 x 2-inch bolts, nyloc nuts and washers to secure the polyurethane chain rollers in my chain guide. Yesterday I switched to to two, 3/8 x 2-inch bolts and nyloc nuts.

http://i442.photobucket.com/albums/q...7KMiles012.jpg

Since both the bolt heads, and the nyloc nuts of my new, 3/8-inch hardware are much larger, I decided not to use the washers shown in the photograph above. :deal I'm pleased to report the hex head bolts and nyloc nuts hold my Spud Rollers very securely in the chain guide. :nod

Spud :wave

Spud Rider 07-03-2011 10:37 PM

The rear of my chain guide had a few cracks in the plastic when I acquired my used, XR650L. Also, my chain guide has recently taken some punishment in the Idaho rocks. Since a new chain guide is relatively inexpensive, and because my Spud Rollers are wearing so well, today I decided to trim the rear of my chain guide, and experiment with a single Spud Roller installed in the front of the chain guide. :nod

http://i442.photobucket.com/albums/q...ication100.jpg

http://i442.photobucket.com/albums/q...ication088.jpg

http://i442.photobucket.com/albums/q...ication090.jpg

My original objectives for this modification were to reduce chain guide maintenance, drive chain friction, and the replacement cost of wear items such as the "chain slipper" and the chain guide slider. I am very satisfied with my success regarding these objectives. :nod However, I now wish to discover if a single Spud Roller in the chain guide works as well as two. :deal Two chain rollers will cost less, make less noise, and induce even less drive chain friction than three chain rollers. :wink:

http://i442.photobucket.com/albums/q...ication094.jpg

http://i442.photobucket.com/albums/q...ication093.jpg

So far I have ridden about 150 miles with a single Spud Roller in my chain guide, and all looks well. :nod I will continue to keep you updated regarding the performance, and durability of my single Spud Roller. :nod

Spud :wave

michael.brat 07-06-2011 09:28 PM

Quote:

Originally Posted by Spud Rider (Post 16297311)
Yesterday I decided to change the mounting hardware for the Spud Rollers in my chain guide. :nod For the last 4,700 miles, I have been using two, 5/16 x 2-inch bolts, nyloc nuts and washers to secure the polyurethane chain rollers in my chain guide. Yesterday I switched to to two, 3/8 x 2-inch bolts and nyloc nuts.

http://i442.photobucket.com/albums/q...7KMiles012.jpg

Since both the bolt heads, and the nyloc nuts of my new, 3/8-inch hardware are much larger, I decided not to use the washers shown in the photograph above. :deal I'm pleased to report the hex head bolts and nyloc nuts hold my Spud Rollers very securely in the chain guide. :nod However, if you are interested, for an additional cost I can also supply my Spud Rollers with two, 3/8-inch sleeves which span the chain guide. :nod

Spud :wave

I should of thought of that :doh
I noticed a good amount of play with the current 5/16 bolts. It's also pretty noisy. Doesn't bother me but I notice it.
I'll run to the local hardware store tomorrow and pick up some larger ones.

Btw; installed that RK chain, front chain roller (spud recommended special :thumb), and a Renthal XRR 15T. Nice design to their sprocket; I'll let you know how it holds up. Had to grind down about 2mm on the backside inner splines to get it to fit (like the Primary Drive one)

Mike B

Spud Rider 07-06-2011 11:23 PM

Quote:

Originally Posted by michael.brat (Post 16336036)
I should of thought of that :doh
I noticed a good amount of play with the current 5/16 bolts. It's also pretty noisy. Doesn't bother me but I notice it.
I'll run to the local hardware store tomorrow and pick up some larger ones.

Btw; installed that RK chain, front chain roller (spud recommended special :thumb), and a Renthal XRR 15T. Nice design to their sprocket; I'll let you know how it holds up. Had to grind down about 2mm on the backside inner splines to get it to fit (like the Primary Drive one)

Mike B

Thanks for the report, Mike! :D Please do keep us updated regarding the performance, and the durability of your Spud Rollers. :nod

Spud :wave


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