Rear spacer, and mods for double bearing

[YoungPUP]

Got new bearings coming, am going to either order a new spacer,( will store the original to be able to go back to stock if ever needed)  or may post looking for a spare in the classifieds. Is there anyone near NW Ind. that I can hire to  machine down the spacer for me? I found that my machinist guy became suddenly deceased. If not could something like this be hacked down with a saw?  Or does Grumpy do small piece work like this?

[Disco]

Don't use a saw.  I can't imagine that a few thousandths either way from the targeted .260" would make a significant difference, but anything other than square certainly would.  It needs to be done with as much precision as possible.  If you can't get what you need locally, PM me and we'll work something out.   

[FryeVRCCDS0067]

I'm in Indiana but still quite a ways from you I think. I've got a lathe but if I remember the shape of that part it would be easier and better done with a mill.

As long as you know the exact dimensions of what you need done a local shop should be able to do it pretty inexpensively.

My advice is don't do it with a saw. Under the best of circumstances a saw would not do a precise enough job.

[Bigwolf]

There is an excellent article about this mod on the shop talk page.  http://www.valkyrieriders.com/shoptalk/5204_bearing_mod.pdf  It has pics of the spacer and the modified spacer.  Do not try to saw this spacer.  It will give you a lot of grief if you do.  The spacer can be cut down just fine in a lathe.  I just looked at mine since I have it out on the floor now anyway.

Wolf

[FryeVRCCDS0067]

There is an excellent article about this mod on the shop talk page.  http://www.valkyrieriders.com/shoptalk/5204_bearing_mod.pdf  It has pics of the spacer and the modified spacer.  Do not try to saw this spacer.  It will give you a lot of grief if you do.  The spacer can be cut down just fine in a lathe.  I just looked at mine since I have it out on the floor now anyway.

Wolf

I'm fairly new to lathe work and spent part of the day today teaching myself how to cut a morse taper in the process of making a floating tail-stock die holder. It seems like a good project for learning and should be useful also.

Although it would be easy to chuck up and shorten the inner spacer it looks to me like chucking the large end of the mushroom shaped spacer in a lathe tightly enough to stay square while facing the smaller end might be a problem. There may well be a solution that I'm not seeing though, as I said I'm new to lathe work.

My son Andy runs the lathe department where he works and will be here tomorrow to help with the four jaw chuck adapter we're building for our hydro-shift. I'll ask him about it then. What's difficult for me is usually easy for him as far as machining goes.

[Bigwolf]

I have many years in a machinist career but currently have very little access to metal working machines.

[Ricky-D]

Since the spacer will not be running inside the oil seal (the oil seal is left out) the outside diameter of the spacer has only to be fitting to the bearing race (inner).

The inside of the spacer has only to fit the axle.

So you can use anything you want to use as the spacer as long as it meets these two requirements.

You can use some steel pipe cut to the correct length and relieved for the bearing.

It's only a spacer now.

***

[RP#62]

You could use an expanding mandrel to grip it by the bore. Or make a mandrel that presses into the bore, then press it out when done.
-RP

[Sodbuster]

Wouldn't it be a lot easier to just cut a new one from some round stock on a lathe ??

[RP#62]

Wouldn't it be a lot easier to just cut a new one from some round stock on a lathe ??

I dunno, it would take about 5 min to make a mandrel.

[Ricky-D]

Over time I have made many spacers using my drill press and various hand tools to achieve very satisfactory results.

We are only limited by our own imagination.

***

[Sodbuster]

I suppose it depends on what you have for a lathe but I envision grabbing a piece of round stock (316 SST or Alum ??) and chuck it up in a self centering three jaw chuck. Bore the ID, turn the OD and cut it to length. Pretty simple operation for any machine shop.

[FryeVRCCDS0067]

There is an excellent article about this mod on the shop talk page.  http://www.valkyrieriders.com/shoptalk/5204_bearing_mod.pdf  It has pics of the spacer and the modified spacer.  Do not try to saw this spacer.  It will give you a lot of grief if you do.  The spacer can be cut down just fine in a lathe.  I just looked at mine since I have it out on the floor now anyway.

Wolf

I'm fairly new to lathe work and spent part of the day today teaching myself how to cut a morse taper in the process of making a floating tail-stock die holder. It seems like a good project for learning and should be useful also.

Although it would be easy to chuck up and shorten the inner spacer it looks to me like chucking the large end of the mushroom shaped spacer in a lathe tightly enough to stay square while facing the smaller end might be a problem. There may well be a solution that I'm not seeing though, as I said I'm new to lathe work.

My son Andy runs the lathe department where he works and will be here tomorrow to help with the four jaw chuck adapter we're building for our hydro-shift. I'll ask him about it then. What's difficult for me is usually easy for him as far as machining goes.

Bigwolf is right. Andy said it could be easily done on the lathe. PM on the way to Youngpup.

[FryeVRCCDS0067]

Wouldn't it be a lot easier to just cut a new one from some round stock on a lathe ??

Probably. In particular if they are aluminum. I hate to admit it, but as many times as I've had one of these spacers in my hand I can't remember if they are steel or aluminum. If they are aluminum and if you had the right diameter round stock on hand it so you didn't have to turn a large amount of stock off I think it would be quicker and easier to make a new one.

Does anybody have one sitting around they could get the dimensions from? Need caliper quality dimensions, not tape measure. In particular one that has been modified to the dimensions Youngpup is looking for?

[RP#62]

They're definitely steel.
-RP

[RP#62]

Stock dimensions are as follows:
(All dimensions in inches)

ID:  0.7930
Minor OD: 1.178
Major OD: 1.561
Flange Thickness: 0.198
OAL: 0.885

The minor OD has a 0.192 wide relief cut at the flange with what looks like a 3/16 radius. This leaves the length of the minor OD (the part the grease seal lip seals on at 0.495.

-RP

[Jess from VA]

Man I wish I had the skill or the lathe or stock to make my own collar spacer.  But if you can't wait to have your own cut down for a few bux, it's only 20 bux to buy one.

03    COLLAR, RR.
42313-422-000    001    $25.69    $19.78

[FryeVRCCDS0067]

Stock dimensions are as follows:
(All dimensions in inches)

ID:  0.7930
Minor OD: 1.178
Major OD: 1.561
Flange Thickness: 0.198
OAL: 0.885

The minor OD has a 0.192 wide relief cut at the flange with what looks like a 3/16 radius. This leaves the length of the minor OD (the part the grease seal lip seals on at 0.495.

-RP

Thanks RP, I've got my valk and my son's valk in the barn but it's too cold out there pull a rear end just to get those measurements. I'll  locate some decent SS rod and make up a few of these in the shorter length needed for the bearing mod in case anyone wants them.

After reading the bearing mod. article at the above link I'm a little torn concerning whether I should make them "0.625 long as the math would indicate or "0.615 long as his was done. I guess making a few of each will be the way to go.

Thanks again for the great pic and dimensions. 

[YoungPUP]

Ok, guess my original post was kinda lacking in detail. I'm working on getting my ducks in a row to do the double row bearing mod on the rear (http://www.valkyrieriders.com/shoptalk/5204_bearing_mod.pdf) And was looking for someone to shorten the stock spacer, as opposed to making a replacement for the original one.  Thanks for all the info , and help.

[Sodbuster]

Ok, guess my original post was kinda lacking in detail. I'm working on getting my ducks in a row to do the double row bearing mod on the rear (http://www.valkyrieriders.com/shoptalk/5204_bearing_mod.pdf) And was looking for someone to shorten the stock spacer, as opposed to making a replacement for the original one.  Thanks for all the info , and help.

YoungPup - your original post is what actually brought on the responses you see. I think the question that came up was if it would be easier/cheaper to make a shorter spacer from scratch than to modify new or existing spacer. What most are trying to say is that it is somewhat difficult to hold the spacer to work on it versus starting with a piece of round bar that you can hold onto while you machine it and cut to length.

Also, if one were to make the spacer from scratch would you really need to have that flange on there versus just making it straight with no flange ?? Would be a lot less machining and easier to make.

[FryeVRCCDS0067]

Ok, guess my original post was kinda lacking in detail. I'm working on getting my ducks in a row to do the double row bearing mod on the rear (http://www.valkyrieriders.com/shoptalk/5204_bearing_mod.pdf) And was looking for someone to shorten the stock spacer, as opposed to making a replacement for the original one.  Thanks for all the info , and help.

Check your PM's

[Disco]

Once you learn how to chuck it up square, it's a fast and easy job to turn on the lathe.  It doesn't have to be absolutely concentric - just square.  Personally, I wouldn't jump through the hoops to make a new one from scratch.

[tank_post142]

why wouldn't you just toss it on a magnetic vise and run a surface grinder across it? mine took 7 mins or so and $12.00 at the local machine shop.

[JetDriver]

YoungPUP-  If you're in the NW part of Indiana, it seems like you could probably find another machinist without too much trouble.  Fifteen bucks, and you're done.