Best V-Twin for power without vibration?

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blair
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Best V-Twin for power without vibration?

#1 Unread post by blair » Sun Jul 08, 2007 2:14 am

What's the best V-Twin to get if you want a fair size (900+) but without any vibration?
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#2 Unread post by slimcolo » Sun Jul 08, 2007 10:55 am

Kiwi if you have big bucks

http://www.kiwiindian.com/Kiwi%20Replica.htm

Also saw a new ad for the 2cyl 350 Chevy based bike, and they are still in business. I don't know their new name but first known as Harley Nostalgia, had to change because of trademark from the motor company.
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#3 Unread post by Gummiente » Sun Jul 08, 2007 11:31 am

slimcolo wrote:Also saw a new ad for the 2cyl 350 Chevy based bike, and they are still in business. I don't know their new name but first known as Harley Nostalgia, had to change because of trademark from the motor company.
You don't mean "Super-Vee", do you? They haven't updated their website since 2002: http://www.supervee.com/index.html
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#4 Unread post by blair » Sun Jul 08, 2007 12:09 pm

slimcolo wrote:Kiwi if you have big bucks
Looks nice in the close-ups. Clearly they put $60K into the detail. But the wide shot:

Image

Yikes.

Frankenbike.

Looks a little like what the Teutels would do for the opening of an Indian store.

Here's a 1946 original:

Image

and a 1950:

Image

There's something about the frame on the Kiwi that makes it look biker-build-offish. Maybe it's just the angle.

And while I could swing $60K, I'm not the kind of person who needs a $60K bike to feel like I'm blingin'. I'm looking at $10K or so, here, and have time to be choosy.
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Re: Best V-Twin for power without vibration?

#5 Unread post by DustyJacket » Sun Jul 08, 2007 12:21 pm

blair wrote:...without any vibration?
Is there a V-twin that doesn't have any vibration? I would think not, based on the whole "V" part. But, I couldn't state it as a fact.

Now if you are looking at any sort of twin engine (parallel, opposed) there are a few with very little vibration.
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#6 Unread post by blair » Sun Jul 08, 2007 12:44 pm

That's the thing. I want the look, but my 600 could homogenize DNA samples. So when I do get my 900 or 1100 or somesuch, minimizing the buzz is a key feature. And it still has to look cool, of course.

There are certain V-angles and distributions of rotating/oscillating mass that can lower the vibration. I've read about them way back. I was wondering if anyone had any experience with stock cruisers that were smooth.
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#7 Unread post by Sev » Sun Jul 08, 2007 1:03 pm

It is in the nature of a V-twin to vibrate sadly.
Of course I'm generalizing from a single example here, but everyone does that. At least I do.

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#8 Unread post by slimcolo » Sun Jul 08, 2007 6:32 pm

Gummiente they are using different name, and address but same pictures in ad as when Super Vee. I think I saw it in Classic Cycle Trader.

Blair I've only seen KIWI motor in person. Bikes have been in photos.
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#9 Unread post by Gummiente » Sun Jul 08, 2007 8:34 pm

slimcolo wrote:Gummiente they are using different name, and address but same pictures in ad as when Super Vee. I think I saw it in Classic Cycle Trader.
I did a Google search but couldn't find anything. If you happen to see the ad again, could you let me know what their address is? I'm curious to see how they've progressed with their design.
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#10 Unread post by flw » Sun Jul 08, 2007 10:29 pm

This does pose a serious question. Given the same size engine, which block design is general the smoother, a V-2 or a I-2 ?

This assumes the same counter balancing, engine mounts, compression, non-aggressive cam and other ways of smoothing out the engine.
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#11 Unread post by Gummiente » Sun Jul 08, 2007 10:33 pm

Sev wrote:It is in the nature of a V-twin to vibrate sadly.
Hmmm... I always thought mine vibrated rather happily. It never seems to be depressed; it always starts first try and takes me everywhere I want to go and back again. My old BSA, well, it vibrated rather malevolently. My Triumph Thunderbird triple buzzed along contentedly for the most part, but my Triumph Tiger triple vibrated like a hyperactive 5yr old at the high end of the rpm scale. My Kawasaki Drifter 1500 had a bit of a lumpy (and noisy) idle, but it smoothed out at speed... although not as much as my Electra-Glide and nowhere near as much as my Road Glide. My Ural, well, let's just say that I singlehandedly support the blue Loc-Tite industry with that bike. :D
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#12 Unread post by blues2cruise » Mon Jul 09, 2007 11:01 pm

Where exactly does everyone feel the vibrations? And is it only when you're running at top speed or at high rpm's or what?

I was a passenger on a friend's older Harley and the vibrations through the floorboards were awful. I sure don't feel that on my V-Star.

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#13 Unread post by Gummiente » Mon Jul 09, 2007 11:19 pm

blues2cruise wrote:Where exactly does everyone feel the vibrations? And is it only when you're running at top speed or at high rpm's or what?

I was a passenger on a friend's older Harley and the vibrations through the floorboards were awful. I sure don't feel that on my V-Star.
That varies from bike to bike. Inline three and four cylinder motors tend to produce high frequency vibrations that are normally felt in the handlebars and footpegs (ie: buzziness") and seen on the mirrors. V-Twins tend to put out low frequency pulses that are felt through the seat, handlebars and footpegs - but the vibrations are different than that of the 3 or 4 cylinder motors.

With the V-Twin, a couple of methods are used to reduce the amount of vibes. Some manufacturers use counterbalancers that rotate inside the engine, but opposite in direction, to counteract the power pulses. Some manufacturers use rubber mounts to isolate the motor's vibes from being transmitted through the frame.

Your friend's older Harley has very little, if any, compensating measures for vibes (especially if it's an older Shovelhead) and definitely none in the passenger area. The older Touring family of Harleys had rubber mounted handlebars and (usually) rubber mounted floorboards to somewhat offset the pulses from the rigid mount motor. Newer Harleys like mine have all that plus the rubber motor mounts, which all do a very effective job of minimising discomfort.
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#14 Unread post by blues2cruise » Mon Jul 09, 2007 11:23 pm

ahhh, thank you. Yes, that older Harley probably had none....and if it ever did have...it was probably worn out by now due to age. The seat and backrest and arm rests were comfy though. :mrgreen:
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#15 Unread post by mgdavis » Tue Jul 10, 2007 12:14 am

A 90 degree v-twin ain't bad. Maybe you should look into a V-Strom or SV. :twisted:
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#16 Unread post by Sev » Tue Jul 10, 2007 1:05 am

Gummiente wrote:
Sev wrote:It is in the nature of a V-twin to vibrate sadly.
Hmmm... I always thought mine vibrated rather happily. It never seems to be depressed; it always starts first try and takes me everywhere I want to go and back again. My old BSA, well, it vibrated rather malevolently. My Triumph Thunderbird triple buzzed along contentedly for the most part, but my Triumph Tiger triple vibrated like a hyperactive 5yr old at the high end of the rpm scale. My Kawasaki Drifter 1500 had a bit of a lumpy (and noisy) idle, but it smoothed out at speed... although not as much as my Electra-Glide and nowhere near as much as my Road Glide. My Ural, well, let's just say that I singlehandedly support the blue Loc-Tite industry with that bike. :D
I'm sending you a bill for the moniter I just sprayed coke on :P
Of course I'm generalizing from a single example here, but everyone does that. At least I do.

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#17 Unread post by slimcolo » Tue Jul 10, 2007 3:00 am

What about a guzzi I hear their as smooth as a BMW.
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#18 Unread post by AZRider » Fri Aug 24, 2007 2:20 pm

Well, it looks like Im a little behind on this one.
Oh well. Hopefully this will Help.

Kawasaki VN1600 classic.
I suppose the meanstreak and Nomad would be the same. Dont know for sure though. Never ridden one.

I have a bad hand due to an accident that happened about 15 or so yrs ago.
I quit riding because I didnt think I could handle the vibes of a bike. A year ago I got back into it. I got a 900. A couple months ago I traded it in for the 16. The 9 had some vibes that bugged me a bit, but the 16 is as smooth as silk.
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#19 Unread post by High_Side » Fri Aug 24, 2007 6:13 pm

Superduke. 8)

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#20 Unread post by motoken » Sun Nov 18, 2007 8:02 pm

Two words:

Moto Guzzi

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