| Author | Message | ||
     Rubberdown |
I've been talking with revolution performance and they seem to have a nice package to build a 90" mill for the XB9. I've had a lot of bikes over the years but am having difficulty figuring out what the riding characteristics of the 9R would be with this monster in it. I'm guessing a flat torque profile with power everwhere. They say they can rev to 8k.?? 111 ft/lbs tq. and 130 hp at the crank. Is this too much for the tranny and secondary drive? (I have upgraded to 06' belt and pullys). I don't expect to get that much power as I'll probably be running a fairly restrictive exhaust for various reasons. Just mulling it over. Thanks for your thoughts. | ||
| Fullpower |
hmmmm 111 lb feet torque with a 52 inch wheelbase. you may consider raising the overall gearing a bit, perhaps use the primary parts from the xb12. you WILL have some difficulty with takeoff. yes, an XB90 sounds like fun. (Message edited by fullpower on November 09, 2005) | ||
| Kowpow225 |
I bet that thing would RRRRRRRIP! 30 inches over stock displacement....what other parts do you have to swap to feed the beast? (Like bigger injectors, throttle body, ECM, etc.) What sort of exhaust are you considering to 'dumb it down'? (Message edited by kowpow225 on November 09, 2005) | ||
| Glitch |
perhaps use the primary parts from the xb12 Good thought that. am having difficulty figuring out what the riding characteristics of the 9R would be with this monster in it. Build it, I'll break it in for ya, and letcha know. After all what are friends for? I'm envious! | ||
| Bud |
how many miles you where planning to do with that kinda engine ? | ||
| Surveyor |
Wow...130bhp and 111ft/lbs of torque!!.........bet that thing will eat back tyres. | ||
| Blake |
I rode a couple 88" tube frame Buells that each put down that kind of power. Frightening! I cannot imagine an XB with a 52" wheelbase with that kind of performance. It would not be fun. It would be downright dangerous. I'm not kidding. | ||
| Blake |
But I'd take it for a ride anyway.  | ||
| Gentleman_jon |
You might want to think about suspension/drive train modifications. I might suggest the following: 1. Steering damper would be a must. 2. Competition springing . 3. Revalve forks and rear shock, or upgrade to Penske, Ohlins etc. 4. Rear tire. 190 is a possible, although it won't help handling, it might help with tire wear and launch. 5. Chain conversion: not sure if current belt is strong enough. 6. Lengthened swing arm as part of chain conversion for stability. 7. Set suspension settings for stability. 8. Get the best quality racing leathers and helmet:-) 9. Book plenty of track time to get used to this monster. | ||
| Rubberdown |
Like I said, I'm just mulling it over. Typically I tend to go overboard on things so maybe I should scale back the extent of this proposed build. I really like the balance of the 9R and don't want to screw it up. BUt.... It would be a ton of fun to be able to screw on the throttle at 70 and ride a low wheelie at will! | ||
| Pammy |
Blake, those measurements are at the crank. That would be about 114 or so at the rear wheel. Just enough to be fun but not scary. I think that would be just about perfect for that size bike. Next time you are down this way, I'll let you check out a scary ride.  (edited to add smilie) (Message edited by pammy on November 10, 2005) | ||
| Road_thing |
Pammy, have you got anything that's not scary, but maybe just a little intimidating? rt | ||
| Chaconas |
If you work with Scott at Revolution Performance you will get a nicely balanced package of quality components.Performance of your XB will be greatly enhanced.As an experienced rider take some time getting used to it and you'll love it.As far as other upgrades go,it all depends on how you ride as to what is important.Your belt would prob. serve you fine,but if you want a chain ck out Trojan.Could'nt be simpler.Steering Damper,cheap insurance,call Rich at racingmotorcycles.com,he has the both the side mount and behind the fork styles. Suspension:Really depends on how aggressive you are.Buell now sells a kit w/stiffer fork springs and a single rate coil for the rear,this was developed in conjunction w/racer Shawn Higbee and is impressive for the price point.Unless of course if money is no object,then by all means go Ohlins.You might also consider Lindall brake pads and a Brembo master cylinder.My point is get the power package,get used to it,then after you have evaluated the way the power and torque have affected your handling get the extra stuff you need to go with it. | ||
| Blake |
Thanks for that clarification Pammy. I missed the "at the crank" notation. That'd be a good street XB.  I'm staying away from Pinelas Park thank you. The currrent incarnation of your Buell is simply too frightening. | ||
| Blake |
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| Rubberdown |
What's your best guess of the likely longevity of this motor if ridden moderately hard and well maintained? Also, would this build lose the "snappiness" of the 9? Thanks for the responses. | ||
| Rubberdown |
KP, they were talking stock fuel system and ECM unless I misunderstood them....which is entirely possible. | ||
| Bigblock |
Ya, quickest bike I ever rode, 4 speed evo sportster, 88" , built to the hilt, very trick heads, monster redshift cams, BIG mikuni flatslide, trick intake, thunderheader, trick oiling system, etc. etc. I assembled the bike and got to do the initial tuning and shake down runs. Can you say roll-on third gear smoking the tire insanely accelarating hold-on for dear life PART THROTTLE wheelies? This bike was later dynoed on a VERY CONSERVATIVE dyno at 112 rwhp, WHAT FUN! This motor in a Buell would be INSANE! I WANT ONE! Like Chaconas said, you may want to get your suspension up to snuff for rider weight, etc. for this kind of monster... | ||
| Blake |
Rubberdown, Lose the "snappiness" of the 9? Are you kidding me? What do you think 50% more HP across the rev range is going to do, slow the bike down?  | ||
| Blake |
That is a mild tune for an 88" engine. It should last just fine if kept properly tuned (not run over-lean) and well maintained. | ||
| Shazam |
Let's start at the top... Riding characteristics (yours may vary): 1. Very noticeable increase in vibration at idle. 2. Idles rough C. It will need VERY little rpm to leave in first...you can leave in second or third D. Moderate application of throttle will feel significantly more gratifying. 3. Full Throttle in first not possible outside of dyno testing.... 4. Hard shifting on the gas, one thru three will lift the front tire. 5. Second gear will power wheelie (look ma no clutch) all the way to redline. At over 70mph on mine. Cover that brake ladies. 6. After you are through trying to control a one wheel in the air problem leaving hard in first you'll have to do the same thing again thru second. 7. First or Second, Lack of a smooth throttle hand will result in a PBR quality "bull" ride. Along these lines...Lesser bikes will make you appear slow if you can't keep the front end under control. 8. Passengers compound this problem. If your wife or significant other was nervous before, it's justified now. 9. I'll rephrase that, It is impossible to be fast on this bike doubled up. Refer to point 3 and include second and third gears. 10. throttle control becomes doubly critical in corners. Ever hear a big block alcohol car Idle to throttle..how quick it makes that transition. The response on mine is quick like that. You won't be waiting for the revs to climb. 11. If you are midcorner on the gas, you will still do power wheelies before you've given full throttle. are we smiling yet? 10. where are we at? Third gear is almost as much fun as second, only now you're travelling a lot faster. 11. the acceleration in third pulls like Second did before the mods. acceleration in fourth only mildly less disturbing. 12. Fourth and Fifth are used rarely on mine. The first three are sooooo much fun. 13. I can cruise at 80mph in fifth at 3000rpm. 14. My top speed has increased dramatically. I can out run a TLR1000, a GSXR750, and neither of those can do power wheelies at 70mph. 15. I have run 11.18-11.20 at 122/123mph all day without wheelie bars. 16. The only track day I did after this motor was complete, left me out in the grass five times. Motor compression on downshifts from high rpm would lock up the rear. It took a while to figure that one out. 17. It's ungodly loud. get over it. 18. You'll be able to ride it anywhere you'd have taken it before. I rode it 1200 miles while in Cali. this summer and another 750 miles for the FBRAT tour. That's in between the wheelies on the street, high-speed runs and trips where I've RIDDEN it to the dragstrip. 19. It gets warm down there. 20. The harley guys will wonder what kind of bike is making all that noise. I am not proud of it, but I've NEVER heard a bike as loud as mine. The jap bike guys will wonder what kind of bike is making all that noise. function over form. 21. No one will want to ride on the side your exhaust exits on....no one. consequently you can idle up to a stoplight and spill coffee in three cars at once with a quick blip. works on cell phone users too. Sometimes I'll sit right next to someone on the highway in "two gears too low". I'll die someday anyways. 22. You will not go anywhere unnoticed 23. All this will cost you a bundle. other points made/referenced: your tranny will be fine. I am running a gen 1 belt ('03). I am using stock injectors, couldn't turn down the injector pulse enough with the power commander at idle for the race injectors. The throttle body was bored from a nine housing, the twelve body is larger and could accomodate more boring than I have done. I am using the XB12 primary set and stock clutches (2nd set on this motor combo, yeah I'm hard on it). I also picked up a set of Freespirits speed pulleys down three out back up one in the front (I couldn't imagine riding this without the combined gearing change). Bud, 4000 and counting... Blake, correct dangerous. seriously! The wheelbase and torque make it loop-able readily, not to mention how touchy the throttle is in the corners. Gentleman Jon, 1. nah 2. nah 3. nah 4. nah 5. nah, belt fine 6. nope 7. won't help much below 50mph 8. you bet, you're gonna need 'em 9. nah, track time didn't work out so well for me on this motor. I'll be better prepared for my next trackday: oiling passage change. Pammy says: "Just enough to be fun but not scary. I think that would be just about perfect for that size bike." Sammy says: "what a woman!" Chaconas says: "My point is get the power package,get used to it,then after you have evaluated the way the power and torque have affected your handling get the extra stuff you need to go with it." very good advice. Rubberdown, can't speak to the longevity yet, I'll keep riding it hard. Snappiness is two fold what you're use to. The motor revs fast but delivers so much more bang. I am using the stock fuel system and stock ECM with PCIII. It looks as if a few more options have materialized lately for fuel adjustments, I'll be looking into them at some point. Getting the fuel "close" in this motor was one of the tougher aspects of the build. I didn't have the $2500 to spend on the fully programmable black box the race teams use. It WAS available. Bigblock, I wish I could smoke the tire. attempting that these days would leave me bench pressing bike parts.  Rubberdown....two words....... DO IT! | ||
| Rubberdown |
OH... MY... GOD. | ||
| Rubberdown |
So I let my wife read Shazam's post. Now she's dropped all objections to me buying a Uly...lol. I guess she figures anything would be better than building up the 9R. | ||
| Shazam |
your welcome  | ||
| Cataract2 |
Shazam, your giving me crazy ideas. Must resist the temptation BTW, have you dynod yours yet? Just how much more powerful does it feel? Yank your arms out of their sockets powerful? | ||
| Bud |
i never riden a 88", but riding aside to one , i was de-graded to pedelbike rider ( my bike 1200 bigbore ) ( search on xb15 ) i only won in 1 & 2 gear, becouse my mate don't had wheely skils, and cornering well there's more skill it to that than power needed what shazam says.... but don't iff it's your only way off transportation | ||
| Blake |
Great post Sam. Thanks. | ||
| Glitch |
Shazam! The name fits! | ||
| Eexb |
"I've been talking with revolution performance and they seem to have a nice package to build a 90" mill for the XB9. They say they can rev to 8k.?? 111 ft/lbs tq. and 130 hp at the crank." So, what's the approximate cost to do the above ??? Give some of us something to "dream" about !!! EE | ||
| Rubberdown |
I'm not sure if we're all on the same page but I've been quoted around 2k using my motor core. They provide the kit, build, and break in on dyno. Customer pays all shipping. This is all preliminary information. | ||
| Shazam |
$2000 sounds like a crank, cylinders and pistons.... with a couple hundo leftover. | ||
| Yohinan |
"I've been talking with revolution performance and they seem to have a nice package to build a 90" mill for the XB9. They say they can rev to 8k.?? 111 ft/lbs tq. and 130 hp at the crank." "I'm not sure if we're all on the same page but I've been quoted around 2k using my motor core. They provide the kit, build, and break in on dyno. Customer pays all shipping. This is all preliminary information." "$2000 sounds like a crank, cylinders and pistons.... with a couple hundo leftover." I dont think your going to get this motor anywhere even close to 2k even if you did the work yourself. Or am I just dreaming here? I am in the process of just some small internal mods and am way over that price and I dont even have a big bore kit. John | ||
| Yohinan |
I guess you cant really call them small internal mods after I think about it but it is not a big bore kit. John |
