Author Topic: Machining the Mean Streak = not much fun  (Read 8235 times)

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Offline GF-in-CA

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Re: Machining the Mean Streak = not much fun
« Reply #25 on: April 08, 2014, 09:21:28 pm »
The part number for the rotor at Murph's is correct, it's probably just a generic picture of the rotor.

Motocommuter, check out this article, it should give you everything you need to know for the swap (see option 2).   :great:

http://www.cog-online.org/clubportal/ClubStatic.cfm?clubID=1328&pubmenuoptID=35726
Gary F.

1998 ZGX1100
Central Valley California

Offline MotoCommuter

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Re: Machining the Mean Streak = not much fun
« Reply #26 on: April 09, 2014, 10:37:07 am »
Gary,

Thanks, I've actually read it but apparently have issues comprehending it. I missed the fact that the wheel had to be machined down. For some reason, I had it that the existing rotor had to be machined down or replaced with the nomad rotor. That was why I posted what I did.

Now get this, I'm actually doing this project. I'm glad I posted and showed my ignorance as I would have been cussing up a storm when I went to put the meanie wheel on. Now I'm looking for a machine shop as well.
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Offline worncog

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Re: Machining the Mean Streak = not much fun
« Reply #27 on: April 09, 2014, 11:03:52 am »
You can look at mine this weekend Kurt. I'm running the Meanie and the Nomad rotor.
RWTW, COBDR, SM 500, BVF...

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Offline MotoCommuter

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Re: Machining the Mean Streak = not much fun
« Reply #28 on: April 09, 2014, 11:08:13 am »
Randy,

Thanks. I sent out an email to a couple friends asking if they knew of a machine shop. i think there is one down the street from me, I'm going to call them today.
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Offline Benjamin

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Re: Machining the Mean Streak = not much fun
« Reply #29 on: April 09, 2014, 05:11:20 pm »
The guide for getting the wheel machined has the lip and the mounting surface cut down in proportion.  Could one simply cut the mounting surface flat and lose the lip, resulting in a flat surface?  With seven bolts, if the lip needed to keep the rotor in place?
'92 Concours ZG1000 - "Wilhelmina" w/ ZRX front end, C14 rear shock, 2MM, GeorgeRYoung's rearsets set up, stick coils, block off plates, Murph's heated grips, Corbin seat, Madstad windshield, ATV bars, semi-nekkid, Meanie rear
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Offline GF-in-CA

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Re: Machining the Mean Streak = not much fun
« Reply #30 on: April 09, 2014, 05:39:25 pm »
It would probably work, but it doesn't seem like it would save much time, if any, to do it that way.  It has been pointed out before that the lip doesn't really need to be trimmed, so if you want to save some time you could eliminate that operation.
Gary F.

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Central Valley California

Offline Benjamin

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Re: Machining the Mean Streak = not much fun
« Reply #31 on: April 09, 2014, 05:58:59 pm »
Gary, I don't mean not trimming the lip, I mean cutting it so it is flat with the mounting surface.  Does the rotor need the lip to stay in position?
'92 Concours ZG1000 - "Wilhelmina" w/ ZRX front end, C14 rear shock, 2MM, GeorgeRYoung's rearsets set up, stick coils, block off plates, Murph's heated grips, Corbin seat, Madstad windshield, ATV bars, semi-nekkid, Meanie rear
'09 Versys KLE650 "Ol' Blue" - SBS (Struck By Subaru) RIP

Offline GF-in-CA

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Re: Machining the Mean Streak = not much fun
« Reply #32 on: April 09, 2014, 06:30:43 pm »
Beej, I understood what you were saying, hence my comment that I didn't think it would save much time.  Personally I would leave the lip, even though the flat head screws would probably hold it fine.  The lip allows any longitudinal loads to be shared between the bolts and the lip, rather than only being resisted by the bolts.  Granted, it's not a big load compared to the size of the bolts, but it does help.  Again, you can leave the lip as it is and save some time there.

HTH,
Gary F.

1998 ZGX1100
Central Valley California

Offline Bob_C_CT

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Re: Machining the Mean Streak = not much fun
« Reply #33 on: April 11, 2014, 11:42:03 pm »
When I did mine I found that the lip didn't even touch the inside diameter of the (meanstreak) rotor. So in theory I don't see the lip as anything more than an alignment aid in putting the rotor on. I suppose if you were to loose some of the rotor bolts this would keep the rotor somewhat aligned to the caliper and help avoid a catostraphic event. I don't see any reason to or time savings by cutting the lip making it one level mounting surface. I used the lip outside diameter to locate the center of the wheel when doing the cut since I used the through axle hole to hold it in the vise.
« Last Edit: April 12, 2014, 04:11:08 am by Bob_C_CT »
Southern Connecticut.
97 C10,ZRX Front, Meanstreak rim

Offline Bergmen

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Re: Machining the Mean Streak = not much fun
« Reply #34 on: April 15, 2014, 03:26:12 pm »
I would hate to machine the lip off and wish I hadn't. You can't put it back.

Dan
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Offline Bill_Heil_NM

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Re: Machining the Mean Streak = not much fun
« Reply #35 on: April 24, 2014, 09:59:58 pm »
So, I am interested in this project and I have a Sieg X3 vertical milling machine that has 9 inches of clearance from the center of the cutter to the support post.  Seems I could mount the wheel on a rotary table and do the job.  Anyone know why not???  I am not an expert machinist by any means, and have never done anything this big, so just looking for some advice here, something I may be missing.  Bill. 

Offline Bergmen

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Re: Machining the Mean Streak = not much fun
« Reply #36 on: April 24, 2014, 10:49:21 pm »
So, I am interested in this project and I have a Sieg X3 vertical milling machine that has 9 inches of clearance from the center of the cutter to the support post.  Seems I could mount the wheel on a rotary table and do the job.  Anyone know why not???  I am not an expert machinist by any means, and have never done anything this big, so just looking for some advice here, something I may be missing.  Bill.

That is how mine was machined, on a rotary table on a Bridgeport (or Bridgeport clone).

Dan
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Offline Bob_C_CT

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Re: Machining the Mean Streak = not much fun
« Reply #37 on: April 26, 2014, 09:13:54 am »
It seems that it would fit. If you have a rim available, concours or mean streak I would stand it up on yhe table (same orientation as though it was mounted in the rotary table, then bring the spindle down near the proposed cut area to make sure you have clearance between the machine spindle and that the rest of the machine head and it won't hit any portion of the rim. It should be ok, remember the more you extend the spindle the less rigid your setup will be on any machine especially smaller machines. As long as you have a handle on aligning the rotary table to the machine and aligning the rim to the table and holding the rim relatively tight, given that the rim material is soft and by taking a few "light" cuts the machine should be capable. The setup is key, once you make a cut you may not have a second chance of realigning the rim.
I'm not a master machinist but have had ample time on machine tools so if you have any questions...

On a side note if you have to spend some serious money on a rigid, sturdy rotary table that you may not have further use for I would think you could find a local machine shop that may do it for around $100.
Southern Connecticut.
97 C10,ZRX Front, Meanstreak rim

Offline Bill_Heil_NM

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Re: Machining the Mean Streak = not much fun
« Reply #38 on: April 26, 2014, 01:23:36 pm »
Bob: thanks for the reply.  I had been thinking about buying a rotary table anyway.  But then there is the question of whether to buy a 4" or a 6".  the 6 being a little large, but probably more rugged, stable, etc.  I think I could set up the table and make sure the wheel trams with the cutting head, and I have nothing but time, so small cuts are no problem.   I am still thinking on this mean streak mod, as it will end up being pretty expensive.  These wheels are anywhere to $300 on ebay to $500 from recyclers, plus machining, plus a rotor, plus the tires, etc, etc.  Besides, I just put on new BT45s, and being the frugal sort, I have to wear them out, at least SOME.  Lots to think about.

Offline Bergmen

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Re: Machining the Mean Streak = not much fun
« Reply #39 on: April 26, 2014, 02:31:08 pm »
Well, there is really no getting around it. Converting to 17" on the rear is going to require a not insignificant investment in both time and money. Outside of the original acquisition cost of the wheel, the rest of the parts that result in a bolt-in conversion just needs to be done to enjoy the advantages of the low profile, hi-tech 17" radial tires that are out there. When I did mine six years ago I considered it a long-term investment in a tire system that would continue to evolve in technology.

Tires are extremely important to the safety and handling of motorcycles, no mystery there. The Concours is a platform worth investing in IMO in order to take advantage of modern tires and the motorcycle benefits from the upgrade very nicely.

So I did reach for my wallet and bend a few wrenches six + years ago to convert both front and rear. I have not regretted it one single bit and I have favorably amortized that investment over the years. I do not miss the 18/16 stock combo at all.

We are lucky the we CAN convert to 17" wheels with a little work and some investment. Many motorcycles cannot do this at all unless a full custom route is taken. Anybody know of a single Goldwing that has been converted? I didn't think so.

Dan
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Offline Bill_Heil_NM

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Re: Machining the Mean Streak = not much fun
« Reply #40 on: April 26, 2014, 02:41:36 pm »
So, why convert the front when you can get a PR3 for the front, and actually a 170/60-17 PR3 for the rear??  (I have PR3s on my V-strom and I love those tires).  Is there some other advantage of  having a 17" front??  It would lower the front of the bike??  Bill

Offline Bergmen

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Re: Machining the Mean Streak = not much fun
« Reply #41 on: April 26, 2014, 02:50:51 pm »
So, why convert the front when you can get a PR3 for the front, and actually a 170/60-17 PR3 for the rear??  (I have PR3s on my V-strom and I love those tires).  Is there some other advantage of  having a 17" front??  It would lower the front of the bike??  Bill

To me, the front being converted is far less important than the rear (as far as tires choices are concerned). You are correct in that state-of-the-art tires are available in 18" and there are excellent choices here. I didn't tell the whole story on the front conversion since for me, I was after the handling/braking improvement of the ZRX forks that just happen to include the light weight 17" wheel along with the package.

Staying with 18" in front and going to 17" in the rear is really an excellent combination that will work very well.

Dan
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Offline Dave Scott

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Re: Machining the Mean Streak = not much fun
« Reply #42 on: April 26, 2014, 03:06:32 pm »
So, why convert the front when you can get a PR3 for the front, and actually a 170/60-17 PR3 for the rear??  (I have PR3s on my V-strom and I love those tires).  Is there some other advantage of  having a 17" front??  It would lower the front of the bike??  Bill

To me, the front being converted is far less important than the rear (as far as tires choices are concerned). You are correct in that state-of-the-art tires are available in 18" and there are excellent choices here. I didn't tell the whole story on the front conversion since for me, I was after the handling/braking improvement of the ZRX forks that just happen to include the light weight 17" wheel along with the package.

Staying with 18" in front and going to 17" in the rear is really an excellent combination that will work very well.

Dan

if it's just tires you are after, the 18 works.  however, the suspension and braking improvements were really the big key for me.  it's a night-and-day improvement.

Offline Bergmen

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Re: Machining the Mean Streak = not much fun
« Reply #43 on: April 26, 2014, 03:32:09 pm »
So, why convert the front when you can get a PR3 for the front, and actually a 170/60-17 PR3 for the rear??  (I have PR3s on my V-strom and I love those tires).  Is there some other advantage of  having a 17" front??  It would lower the front of the bike??  Bill

To me, the front being converted is far less important than the rear (as far as tires choices are concerned). You are correct in that state-of-the-art tires are available in 18" and there are excellent choices here. I didn't tell the whole story on the front conversion since for me, I was after the handling/braking improvement of the ZRX forks that just happen to include the light weight 17" wheel along with the package.

Staying with 18" in front and going to 17" in the rear is really an excellent combination that will work very well.

Dan

if it's just tires you are after, the 18 works.  however, the suspension and braking improvements were really the big key for me.  it's a night-and-day improvement.

10-4, the 17" wheel on the ZRX front end was just a very nice fringe benny to the package.

It's all good!

Dan
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Offline Bill_Heil_NM

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Re: Machining the Mean Streak = not much fun
« Reply #44 on: April 26, 2014, 06:59:29 pm »
Thanks for all the replies.  You all are really tempting me.  One thing at a time I guess.  Bill

Offline tdbru

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Re: Machining the Mean Streak = not much fun
« Reply #45 on: April 27, 2014, 03:05:02 am »
Bill,
keep looking on ebay etc.  I looked for about 3 months and finally a meanstreak rear wheel showed up at a price I could live with.  I like the 17 front due to the 120/70 having a bit more rubber on the pavement if I understood things correctly.  i do like the versatility of the 17 rear when it comes to buying tires, but the rear tire solution, even for 17s is still a bit more limited than on some bikes.  i.e.  a 170/60 is about as wide as will fit between swingarm.  I picked the 160/70 due to the bit higher weight rating.  it feels like to me that the handling & braking have been upgraded with the switch to 17s both front/rear.  but you don't need to do them both at once.  since you just put a new set on the bike, that'll give you extra time to search for a MSW while your out wearing out the current set of tires.
Brian

Offline Bill_Heil_NM

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Re: Machining the Mean Streak = not much fun
« Reply #46 on: April 27, 2014, 01:52:36 pm »
There are a number of MSW on ebay right now.  One, slightly dented for $120, one with a starting price of $160, and a couple with buy it now prices of $300+.

Offline MotoCommuter

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Re: Machining the Mean Streak = not much fun
« Reply #47 on: June 03, 2014, 04:47:33 pm »
OK, finally got my meanie wheel machined, installed the rotor and had a new PR4 installed. I managed to get the wheel on the bike but it was a PITA. Everything fit and installed back on like it should. Now, I need to finish up a couple maintenance  items and get the plastic back on and see how it rides. Hopefully I'll be able to test it this weekend.

FYI, I was able to get it machined for a $100. A friend of a friend had a CNC machine and did it for me.
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Offline KJohnson21

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Re: Machining the Mean Streak = not much fun
« Reply #48 on: June 27, 2014, 04:10:13 am »
I got a nice deal on eBay for my Mean Streak wheel with a decent tire.  It took me longer to find the Nomad rotor!  Thought I had one at first, turns out the vendor had mislabeled a rear rotor.
I had to go through four or five shops before I found one that could machine the wheel.  I wish I hadn't mentioned the depth of the bolt holes, I could have done that myself.  Turned out to be $225 (3 hrs. @ $75) but I have admit, the guy did a very nice job.
I've been happy with the "new" wheel ever since.  Even more now that I put a new set of Dunlop RoadSmart 2 tires on the bike recently.