Need leads for HDPE rollers with bearings

[micmac]

Sorry guys for starting a thread the disappearing for a bit.

Mike : I hadn't thought of the compression force but you are correct it would be possible to crush the bearing.

Lewis: I like the shoulder bolt idea.

My redneck solution for a while now has worked but I would like something better. I drilled out a portion of the roller to allow room for a nut to fit partially inside. I put the roller on a bolt with the proper shoulder that would allow the nut to thread all the way to the shoulder. This allowed the roller to move freely and the inner nut would allow the bolt to be torqued to the unistrut without interfering with the roller. Its worked just ok but I'd like to find / build a better system.

Here is a picture of my current bandaid solution:

[lewis]

I like the idea of the rollers for a few different ATV applications. Egoperf and Mark M. have been working on updated Max II chain adjusters, and one of the issues they were running into (if I can describe it well, and accurately) was when the roller was only supported from one side (i.e., a bolt through the roller, bolted to a piece of Unitstrut) it was difficult to get pinch spacing right so that the bolt would tighten into the Unitstrut firmly enough to stay tight, but not so tight that it would bend the spacers. I guess the bushing in the roller actually collapsed the washers (for lack of a better term) on each side, and tightened up on the roller. The roller didn't roll anymore, and it actually acted as a slider. Since there's such limited contact area on that circle, the chain ended up chewing right into the roller, and it never really rolled again, from what I understand. I think this could be eliminated if you could support the roller on both sides. I don't know if this is practical on the Hustler; I just don't have familiarity with them. I'll have to go look through the pictures.

~m

Mike, this is a little bit not on Race's subject but a shoulder bolt will work in your instance you are discribing to stop the lock down of the roler. Just my 2 cents. Then again you may have already tried it that way.

[racerone3]

I like the idea of the rollers for a few different ATV applications. Egoperf and Mark M. have been working on updated Max II chain adjusters, and one of the issues they were running into (if I can describe it well, and accurately) was when the roller was only supported from one side (i.e., a bolt through the roller, bolted to a piece of Unitstrut) it was difficult to get pinch spacing right so that the bolt would tighten into the Unitstrut firmly enough to stay tight, but not so tight that it would bend the spacers. I guess the bushing in the roller actually collapsed the washers (for lack of a better term) on each side, and tightened up on the roller. The roller didn't roll anymore, and it actually acted as a slider. Since there's such limited contact area on that circle, the chain ended up chewing right into the roller, and it never really rolled again, from what I understand. I think this could be eliminated if you could support the roller on both sides. I don't know if this is practical on the Hustler; I just don't have familiarity with them. I'll have to go look through the pictures.

~m

the steel bung that goes inside my rollers will be THICK wall, and 0.010 smaller in O.D. than the I.D. of the roller. horefully they won't mushroom out enough to jamb. if this desigh fails, i can go to sliders like Mark had in Ashtabula. i have a bunch of junk Max adjusters that i could steal the sliders off

racerone3 while i am throwing around my two cents worth as if i was j.d.rockefeller you may want to turn the center part of the roller where the chain runs a smaller od than the ends or sides the only problem i've had in the past with a straight or flat roller is when the chain starts to stretch and loosens up it will crawl around on the flat surface if too much slop gets in the chain it may start to knaw at the guides or mounting bracket my thought is a flat a little wider than the chain maybe an eighth to a quarter inch smaller od in the center of the roller then angled to your original end od much like the old duncan butterfly yo-yos this would help keeping the chain running straight and true even if it had a little play in it just a thought /tim

I found some fender washers with a 2 1/4 O.D. that i'm going to try on the outside of the rollers, if that doesn't work out i will need to turn the rollers down. unfortunatly, they will probably all have to be custom once i get chain in the machine. from what i've seen so far the Hustler frame isn't too precice, so i don't want to turn the rollers and count on all of them coming up in the same place.

[spud9slim18]

racerone3 while i am throwing around my two cents worth as if i was j.d.rockefeller you may want to turn the center part of the roller where the chain runs a smaller od than the ends or sides the only problem i've had in the past with a straight or flat roller is when the chain starts to stretch and loosens up it will crawl around on the flat surface if too much slop gets in the chain it may start to knaw at the guides or mounting bracket my thought is a flat a little wider than the chain maybe an eighth to a quarter inch smaller od in the center of the roller then angled to your original end od much like the old duncan butterfly yo-yos this would help keeping the chain running straight and true even if it had a little play in it just a thought /tim

[spud9slim18]

any spacers (tubes washers ect) are the size of or a hair smaller the od of the inner race of the bearing that way when bolted up tight there is no lateral load on the ball bearings themselves or the outer race and it should spin freely no problem / tim

[mark m.]

Mike. I corrected that problem by making the roller a slight bit narrower and making new 1/4" thick washers that go up against the unistrut. However, after all that messing around with rollers we went back to the gliders but with the unistrut mount not that pesky ratchet style adjuster. So far it has proven reliable. I am not sure that the Hustler could use the gliders or not.....maybe.

[hydromike]

I like the idea of the rollers for a few different ATV applications. Egoperf and Mark M. have been working on updated Max II chain adjusters, and one of the issues they were running into (if I can describe it well, and accurately) was when the roller was only supported from one side (i.e., a bolt through the roller, bolted to a piece of Unitstrut) it was difficult to get pinch spacing right so that the bolt would tighten into the Unitstrut firmly enough to stay tight, but not so tight that it would bend the spacers. I guess the bushing in the roller actually collapsed the washers (for lack of a better term) on each side, and tightened up on the roller. The roller didn't roll anymore, and it actually acted as a slider. Since there's such limited contact area on that circle, the chain ended up chewing right into the roller, and it never really rolled again, from what I understand. I think this could be eliminated if you could support the roller on both sides. I don't know if this is practical on the Hustler; I just don't have familiarity with them. I'll have to go look through the pictures.

~m

[spud9slim18]

i looked in mc master carr. the 608 bearing is metric. id 8mm x od 22mm x w 7mm . sorry for any confusion . afterthought you could turn a roller to accept larger bearings of choice. just dont forget the pinch spacer. tim

[racerone3]

when the shop foreman saw the stick of material i was grabbing, i got run out of the machine shop i handed my drawings off to my friend Shawn who had let me in in the first place, and he is going to make my rollers on monday. he is also going to get me a price per unit, and if it isn't a totally unreasonable number, i'll post here.

[micmac]

I see some potential with some of the rollers that rockymountain sells. I'll contact them to see what the specs are.

Mike

[spud9slim18]

got to looking through some of my son's old atv racing stuff and found a used chain roller two roller bearings #608-rsz w/one steel seal and one rubber seal each i dont think these are metric bearings the i.d. appears to be 5/16 .313 is what i measure o.d. 7/8 .870 measured width little over a 1/4 .275 measured hope this helps tim

[spud9slim18]

new here but a chance to spend my two cents worth you may look at atv/mc chain rollers a couple places come to mind at rockymountainatvmc.com and possibly denniskirk.com tim

[jpswift1]

When I saw the pictures the first thing I thought of was a wheel off a skateboard/rollerskate. I'm not sure you would be able to bolt flush w/o a little modification or if they would last... just food for thought.



Adam
Southeast Iowa

Great idea, Adam. Cheap and effective......I think that might actually work with some slight modifications.

[gearhead1937]

When I saw the pictures the first thing I thought of was a wheel off a skateboard/rollerskate. I'm not sure you would be able to bolt flush w/o a little modification or if they would last... just food for thought.



Adam
Southeast Iowa

[Bw6]

I'm looking for someplace that sells HDPE rollers with a bearing through it, like this one:




Due to space limitations I'm unable to use idler sprockets. Also I need to be able to clamp the roller flush to a metal plate so just the old stock rollers wont work.

I've tried the usual suspects Mcmaster Carr, surplus supply etc.. but I've come up empty. if anyone has a lead it would be much appreciated.

Mike

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