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Buell Motorcycle Forum » XBoard » Buell XBoard Archives » Archive through July 30, 2006 » New HD motor AND Transmission « Previous Next »

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Cacciola
Posted on Wednesday, July 26, 2006 - 03:46 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I Haven't seen nobody talking about that here, but harley just released a new engine (just a bigger twincam) but the thing I got interested in, was the new 6 speed transmission, will they ever come to us?? Please!!!

http://www.motorcycledaily.com/14july06_harley.htm


Going hand-in-hand with the new motor is an all-new six-speed transmission, which Harley is calling the 'Cruise Drive'. Harley claims more horsepower throughout the powerband from the new motor, combined with smoother shifting and more durability from the new transmission.

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Jaimec
Posted on Wednesday, July 26, 2006 - 05:17 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Why do you think you need a sixth gear? In my experience, you only needed a lot of gears if you had a narrow powerband, and you spend half your time rowing the gearbox to keep the engine in the sweet spot of it's power band. With the mile-wide powerband of a Buell engine, why do you need more gears?
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Daves
Posted on Wednesday, July 26, 2006 - 05:40 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

we dynoed one the other day.
Get ready















stock it had 64.75 HP
82.67 tq

we then put a S/E air cleaner kit on it and got
69.25 HP
84.59 Tq
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Sik_s
Posted on Wednesday, July 26, 2006 - 05:41 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I think some people want to get a sixth gear so they can try to go 180 like the Jap bikes, and they think that a sixth gear will do it for them.
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Spork
Posted on Wednesday, July 26, 2006 - 06:24 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I cruise around 80-85, at which speed the engine turns ~4000 rpms. I think a 6th gear would be great.
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Cacciola
Posted on Wednesday, July 26, 2006 - 06:26 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I want a sixth so I can get better mileage on highways, thats all, a little lower RPM on cruising speeds.
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Pwnzor
Posted on Wednesday, July 26, 2006 - 06:41 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

yep, lower rpm cruising speed. personally i like to go about 65-70 but on the freeways around here everyone goes 80-85. I'd like to keep my rpm's under 4k on the freeway.
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Jaimec
Posted on Wednesday, July 26, 2006 - 06:54 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Hmmmm... with my bike, the faster the engine spins, the smoother it feels and the clearer the images in the mirror. Also, better engine braking the faster the motor is spinning. At 4K, you're still well below the redline, and the engine doesn't even feel like it's working hard. And even at a steady 80 mph, I'm still getting about 50mpg. The grass always LOOKS greener on the other side, but...
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Lucas70374
Posted on Wednesday, July 26, 2006 - 06:55 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

the the about the 6th speed its still a 1 to 1 ratio. its not a true over drive. the screaming eagle 6 speed is .89 to 1 ratio

alot of people are jumpin up and down but all they done was put another gear in the middle.

just my 2 cents
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Perry
Posted on Wednesday, July 26, 2006 - 07:09 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

My 12 is smoothest at 3300, and starts to vibrate again at 4K and up.

I'll second the desire to ride freeway speed at something less than 4K.
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Pupu
Posted on Wednesday, July 26, 2006 - 08:07 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

yup, i want an overdrive, not just a 6 speed. if it is still 1 to 1 there is no need for it. if i could get another 4 miles a gallon or so, that would be awesome. that is one more trip to work on a tank.
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Rubberdown
Posted on Wednesday, July 26, 2006 - 08:13 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

DaveS, what bike did you dyno?
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Speedfreaks101
Posted on Wednesday, July 26, 2006 - 08:26 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Another vote for an overdriven six speed. The reason I want six gears is because I like the way the gears are spread now but I ride a lot at 85-90 mph and overdrive would be great. It would help with fuel mileage and wear and tear on the engine. I could go to a chain and adjust the ratios but then I would kill the bottom end.

I have read about some guy that got one of the aftermarket six speeds to work in an XB. I think he is from Ok but I am not sure. Anyone know who he is and if it is simply urban legend?

Later,
Bart}
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Pupu
Posted on Wednesday, July 26, 2006 - 08:33 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

i read that somewhere too, but i also remember it being some outragous sum of money, like $ 2500. that is alot of money for one more gear.
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Chainsaw
Posted on Wednesday, July 26, 2006 - 10:09 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

stock it had 64.75 HP

I was pretty excited about the 96 and 6 speed. I should really ride one before I write them off. I really like the Road King Custom. It just seems criminal to get less than 65 ponies out of that new engine.

The new tranny seems like a good addition. They put them in last years Dyna's.
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Dongalonga
Posted on Wednesday, July 26, 2006 - 10:11 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Yup evertime I take the interstate from VT to MA I wish for an overdriven 6th gear.
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Chainsaw
Posted on Wednesday, July 26, 2006 - 10:19 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

...If I'm doing the math right on the HD site, the Twin Cam 96 has a whopping 1.5 more HP than the Sportster 1200. The TC88's have 57.3HP, 3 less than the Sportster!

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Jackbequick
Posted on Wednesday, July 26, 2006 - 10:25 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I read somewhere last week that they are having some problems with bearing failures on the new six speed. A google search indicates there may be some other teething problems with the new six speed. The bearing problem I read about may relate to the inner primary drive bearing mentioned at the link.

Here is a tech article with some more details about the bearings, gears, and ratios on the new six speed.

Jack
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Bake
Posted on Wednesday, July 26, 2006 - 11:47 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I'm happy with my 03 xb9r motor and tranny and would rather let them get this right before stuffing them into the Buell line up.
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Ceejay
Posted on Thursday, July 27, 2006 - 12:53 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

math may be right but I think Daves dynoed it on a chassis dyno not an engine dyno, thus take 10-12% off of the H-D site #'s as those come from the crank...
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Blublak
Posted on Thursday, July 27, 2006 - 01:19 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Man.. What a shame.. My 2000 Fat Boy 95ci has just a hair under 100 ponies at the rear wheel.. according to a friendly dyno it was on at the stealership once.. Heck, if they made factory motors with that kind of power... they could carry much more chrome. Or at least sell a few to the 'younger' cruiser crowd that is lining up for the 'inexpensive' power cruisers out of 'other companies' ..
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Rasmonis
Posted on Thursday, July 27, 2006 - 01:21 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I think it's all about the break in, I shift in the higher rpm (same for my cars). I cruise @ around 75-80 on fourth gear and my bike sounds and feels just right.

I only shift to 5th for 85mph - and above speeds. 4200-4500 rpm is my sweet spot. Anything below 4000 makes "getting up and go" a relatively sluggish experience. XB12S all stock (for now). Runs even better after I did the 5K service.
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Jackbequick
Posted on Thursday, July 27, 2006 - 01:26 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

My '97, 80 cu.in. Dyna FXD is rated at 65HP per the service manual (crank HP assumed).

And it has a 8.5:1 compression ratio and weighs 600 pounds.

But on the road it all works out fine. The higher gearing on the older Dyna's puts me at 85 MPH in 5th gear at 3,500 RPM, against a 5,000 RPM redline. I guess the six speed would drop that to about 3,200 RPM.

I think it is fair to say that a thoroughly addicted to speed and handling Buell rider is going to be disappointed with a Dyna if he expects to ride both the same way.

Those that understand there is a difference between apples and oranges won't be. But they may wish they had one of each...

Jack
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Daves
Posted on Thursday, July 27, 2006 - 02:59 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

it was a 07 FLHTCU that we dynoed
It was rear wheel hp and Tq

Yes, even though they don't have big numbers in the HP the bikes work well for what they are intended.
Kinda like Buells.
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Xbeau12s
Posted on Thursday, July 27, 2006 - 03:08 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I bought my Buell because that's what I wanted. V-Twin with a 5 speed. If I wanted a 6th gear I'd get a squirly Ninja, or a CBR but after riding all and hopping on my 04 XB12S I have no need to go over 100mph. Just my .02
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Thumper2811
Posted on Thursday, July 27, 2006 - 03:24 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I want a 6th so I can go 240 mph!!!!!
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Xbeau12s
Posted on Thursday, July 27, 2006 - 03:31 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Busa Baby! Can they go that fast? Off topic but what is the top speed on one of those long, freakish looking beasts?
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Bigeasy
Posted on Thursday, July 27, 2006 - 03:51 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I think the busa is limited to 186mph. Also just read that the bmw k1200s set the new stock speed record at the flats. Something like 176mph, not sure on the exact speed.
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Pilot
Posted on Friday, July 28, 2006 - 06:43 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I think the busa is limited to 186mph. Also just read that the bmw k1200s set the new stock speed record at the flats. Something like 176mph, not sure on the exact speed.
BMW are going to be pissed when they learn that an FIM record was set (yet to be ratified) In Australia early this year aboard a Suzuki and they blew that record out of the water. I was the chase vehicle driver.Joe and Jon of landracing.com and the friendly team from tuneboy.com.au were involved.I was also support crew for FireManJim who also set a new record on his Buell.A great time was had by all.
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Madduck
Posted on Friday, July 28, 2006 - 01:28 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

Ross,

I think the BMW record is an AMA US only record. Pretty sure the FIM record was higher and they ran in an "open" class that year. Records are records tho.
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Jaimec
Posted on Friday, July 28, 2006 - 01:34 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

World Land Speed Record. See: http://www.bmwmoa.org/features/k12s_speed.htm
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Altima02
Posted on Friday, July 28, 2006 - 02:10 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I have a 9 and a sixth gear would be great for highway cruising, but I would probably never use it in town.

It is not needed, but when Im cruising at 85mph, my little engine is just buzzin.
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Buellishxx
Posted on Friday, July 28, 2006 - 06:02 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

I haven't heard of anyone doing it, but can you not change the front pulley out for a larger one?

My wifes sporty was an 883 that was made into a 1200. I put on a pulley that had 2 or 3 more teeth on it, and it dropped the rpm about 500 at 110 kph.
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Speedfreaks101
Posted on Saturday, July 29, 2006 - 01:44 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only)

If you make changes to the pulleys so that you lower your rpm, you will also loose the torque multiplication of the lower gears, hence slower on the bottom end and not able to utilize the engine as well. Keep the gearing the same and add an overdriven sixth gear.

(Message edited by Speedfreaks101 on July 29, 2006)
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