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Wbrisett
| Posted on Saturday, October 22, 2011 - 02:39 pm: |
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I've only put 10 miles on her so far (my initial test ride), but the swapping of the primary has to be the best upgrade I've done to the Uly so far! I ran her up to 80 in 5th without putting too much of a strain on her. I don't think the gear reduction at the top end is going to bother me one bit. However, tootling around town is going to be a whole lot easier now. Wayne |
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Panhead_dan
| Posted on Saturday, October 22, 2011 - 06:59 pm: |
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Once you get used to it, you'll wonder how the heck you lived with it the way it used to be! |
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Andymnelson
| Posted on Saturday, October 22, 2011 - 07:28 pm: |
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Yup. |
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Buewulf
| Posted on Saturday, October 22, 2011 - 09:26 pm: |
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I've always thought 1st gear was way too tall and that 5th gear was too short. I've been contemplating the primary swap since I bought the bike over two years ago. Flow of traffic here is regularly 80mph+, and long freeway rides (4 hrs or more) are necessary if you intend to find a curve. I am mostly concerned with shortening my range which is already at the minimum I would accept on a bike. Do you guys travel a good bit on interstates? If so, how was your fuel economy affected by the swap? |
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Panhead_dan
| Posted on Saturday, October 22, 2011 - 10:54 pm: |
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Thats the best part. On the highway, it still gets 50 mpg. There's a good chance it will drop for round town riding but the wheelies are worth it. By the way, your top end speed will go up, not down. |
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Tootal
| Posted on Sunday, October 23, 2011 - 10:37 am: |
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I saw 122 on the clock last week chasing tstone on his Tiger. It was still climbing but we ran out of real estate. The XB9 primary is really nice! |
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Busykat
| Posted on Sunday, October 23, 2011 - 01:41 pm: |
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Agreed! My Uly is MUCH happier with the swap and yes, I actually get slightly better fuel mileage too! I only lost 4 MPH off the top end, (135 vs. 131 indicated) but man, does it get there quicker. The daily 30 minute superslab commute is no problem at all. |
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Tankhead
| Posted on Sunday, October 23, 2011 - 05:54 pm: |
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Must....... resist......temptation..my wife.......will.....not...understand....this expense......Birthday is approaching though. |
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Busykat
| Posted on Sunday, October 23, 2011 - 06:08 pm: |
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Tankhead, just use what wives have been using on us poor unwitting husbands all these years: -"It was on sale!" -"This old thing? It was in the back of my closet." -"I've been using that same ol' ratty XB12 primary for well over a year now and I FEEL I deserve a treat." -"I lost weight and the XB12 didn't fit me anymore." |
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Thesmaz
| Posted on Monday, October 24, 2011 - 10:26 am: |
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What the estimated total cost to swap the primary? |
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Hughlysses
| Posted on Monday, October 24, 2011 - 10:40 am: |
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What the estimated total cost to swap the primary? $193 or $220 depending on which year your Uly is. http://www.americansportbike.com/shoponline/ccp0-p rodshow/A17150.html http://www.americansportbike.com/shoponline/ccp0-p rodshow/A17192.html |
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Danair
| Posted on Monday, October 24, 2011 - 10:46 am: |
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Anyone in the San Diego area that's done this and willing to demo it? |
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Wbrisett
| Posted on Monday, October 24, 2011 - 10:48 am: |
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American Sportbike has a kit with all the parts you need to reduce your gearing. If you run the '06 or '07 it's just under $200, if you have the '08-'10 then it requires some different parts and it's $220. I also had to pay another $20 to have a shop press out the primary from the stator housing. In my opinion, the hardest part of this whole process is getting the primary nut off and on with the proper torque values. Wayne |
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Panhead_dan
| Posted on Monday, October 24, 2011 - 11:12 am: |
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You don't need a shop to press it off. If I remember correctly, there is 2 threaded holes in it. Just screw 2 bolts in them and it comes apart. |
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Hughlysses
| Posted on Monday, October 24, 2011 - 12:43 pm: |
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According to American Sport Bike's listing, the reason for the price difference in the 08-up kit is the 08-up crank sprocket is not available without the rotor; it comes pre-installed. So, for an 08-up, you don't have to mess with the rotor at all. |
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Reepicheep
| Posted on Monday, October 24, 2011 - 12:58 pm: |
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I wish I knew if the "soft" 07 cranks were hurt by revs, or by lugging. I'd like to swap the primary, but want to know if it would make things better or worse. |
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Hughlysses
| Posted on Monday, October 24, 2011 - 01:32 pm: |
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I wish I knew if the "soft" 07 cranks were hurt by revs, or by lugging. I'd like to swap the primary, but want to know if it would make things better or worse. Bill- my guess would be lugging is worse. I don't think I've ever even hit the rev limiter with my bike, but I have done a good bit of slow speed riding. The only thing close to abuse I ever gave my Uly was a LONG ride (~20 miles) through the Cohutta Wilderness in North Georgia. The road was covered with fresh, deep gravel, and I putted along in first gear at ~2500 RPM for the vast majority of the distance. I know it resulted in the primary chain stretching enough to require adjustment immediately afterward. That was a long time (~10,000 miles or so) before my engine problems, but it's the only thing I can point to and say "that might have had something to do with it". |
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Reepicheep
| Posted on Monday, October 24, 2011 - 02:09 pm: |
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Well, I could just wait for my crank to go, then put in the XB9 crank, with the bigger journals, and put on the big bore kit (1150). I love the Uly, but I do miss the sound of my 9sx howling through the intake at 7800 RPM... It was a beautiful noise... |
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Portero72
| Posted on Monday, October 24, 2011 - 04:57 pm: |
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Wayne has to go and make me spend money...again! |
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Wbrisett
| Posted on Monday, October 24, 2011 - 05:32 pm: |
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Mark... trust me after you ride mine you'll want it. ![: D](http://www.badweatherbikers.com/buell/clipart/biggrin2.gif) |
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Djohnk
| Posted on Monday, October 24, 2011 - 08:55 pm: |
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Now you convinced me ... I have another thing on my wish list. |
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Buewulf
| Posted on Tuesday, October 25, 2011 - 10:13 am: |
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OK, I think I'll be adding the XB9 primary kit to my stocking. You guys have convinced me. |
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Portero72
| Posted on Tuesday, October 25, 2011 - 12:16 pm: |
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Wayne- I already want it. Now I gotta have it. Gonna be at Doc's Thursday? Got a million questions for you. |
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Wbrisett
| Posted on Tuesday, October 25, 2011 - 12:24 pm: |
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Mark, I'll be there. My brake lever and hand guard are still on back order from my off-road adventuring on the Uly in Utah two months ago, but I'll have the bike there. Wayne |
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Buelet
| Posted on Friday, October 28, 2011 - 02:06 pm: |
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Ok - I'm confused. Seems to be conflicting info here. From American Sport Bike, it looks like this is an overall 11% gearing reduction, that will LOWER the top speed as well... Which is it? I've never had an issue with the stock gearing on my '06 12X, but I'd be happy to have a lower 1st gear AND a higher top speed. Stock for me is 117mph at the rev limiter as indicated by GPS. Any clarification would be much appreciated! |
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Froggy
| Posted on Friday, October 28, 2011 - 02:29 pm: |
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Yep it reduces the gearing by 11%, so your top speed is 11% lower. |
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Buelet
| Posted on Friday, October 28, 2011 - 02:46 pm: |
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Thanks Froggy. That's what I figured. Not sure why some claim get an increase in top speed? Think I'll stick w/ my stock gearing! |
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Buewulf
| Posted on Friday, October 28, 2011 - 04:07 pm: |
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Many vehicles reach their top speed in next-to-final gear since the increased torque at the wheel allows it to overcome more drag and reach a higher speed. That may be an assumption of those making such a claim. But my 2006 Uly is redline limited, not drag limited, so my top speed would definitely go down should I do the change. I am guessing it will max out approximately at a sustained 115mph after all the skip spark brings the rpms down to 6400 or whatever rpm it is programmed to hold the bike at after it teases you for a moment at 6800. All my friends riding Japanese bike will get a good laugh at that, but it is fast enough for me as I rarely ever go over 100 - 110, and then only in short bursts. Range is what I care about, and I need to keep seeing 150 - 160 miles before I need gas to be truly happy with the swap. So I hope these reports are accurate. I would assume top speed of the 08+ bikes is also redline limited, so you should see a decrease as well though the extra rpms will have you going a bit faster than my '06, perhaps a good bit faster if the '08+ doesn't implement the skip-sparking like my '06. |
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Wbrisett
| Posted on Friday, October 28, 2011 - 04:22 pm: |
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Froggy is spot on, you do loose top end speed. However, I've never hit the top speed on the Uly, nor do I plan on it. So, for me the primary change doesn't affect me from a top speed perspective. However, puttering around in school zones and heavy traffic is much, much, much better... .So I'm happy. Wayne |
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Ourdee
| Posted on Friday, October 28, 2011 - 05:02 pm: |
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I say the following with the assumption that top speed on an 08 XB12XT in 5th gear with stock gearing is 139 mph where the rev. limiter would actuate. 139 mph divided by 100 is 1.39 to subtract the 11% we then multiply 1.39 by 89 and get 123.71 On my uly I shift into 5th gear at an indicated 125 and it continues to accelerate. I wonder what my true top end is without the bags. |