Dozer

I fixed it.... and dont forget there is crossover pipe between the two STOCK mufflers which allows scavenging and affects the sound as well as the two stock header pipes are not indentical as is quite obvious looking at mine from the backside on the rec room floor what a nightmare of welded/clamped pieces


my 2 into 1 into 2 exhaust puffs out the two back outlets simultaneously but still has the gallop

PS one thing I noticed was the lack of blueing on the stock pipes
Both front and rear inner pipes blued immediately on both the Cobras I had and on the Megacone exhaust . Larger exhaust flow/ different .. thinner material???
The exhaust shields remained nice chrome..<br><br>Post edited by: Pop Rivet, at: 2006/09/23 01:18

So...Roadies are single-pin cranks? I had some dyed-in-the-wool Harley guy with a SomethingGlide at work telling me the other day that that's why my R* would never be as good as a Harley...because Harleys are the only single-pin crank motors! I can't wait till Monday!

RK

Yes and the only difference is your front an rear connecting rods are side by side on the pin whereas.. one harley connecting rod is wished- boned over the other..that means that the wish bone one is weaker...

The gallop or harley sound stems mainly from the single pin crank because of the
odd firing of the cylinders.. Harley tried to patent their sound by preventing others from using the single pin crank... design... they couldnt do it.. V-twins first from Japan used dual pin cranks like the two Honda Shadows I owned..they were smoother even firing motors and liquid cooled to boot but never had the Harley Sound..
R* came at Harley with an air cooled motor with the single pin crank design
and a better crank heavier that produced less vibration ie without counterbalancing
I am an ex Harley lover that sees a better built Harley design v-twin from Yamaha
that is THE motor for Metric customizing much like what Doc has done... its a disease... There is supposed to be an upcoming series on TV called the Metric Revolution and it will make you proud to own a R*
The Japanese were.. at least in the cruiser market ...trying to build a better
V-twin than Harley by taking it to a dual pin smoother cooler running liquid cooled etc
Yamaha decided instead ...to make a Harley motor BETTER ..and they did..

I dont think the sound of the R* is exactly like the Harley because of manifold diffs etc but it is close
And ignition...Harley motors have a dual fire single coil ignition..both spark plugs fire at the same but one is on the compression stroke and the other is a dummy fire on the exhaust stroke that may ignite unburned gases and give it that extra misfire sound... Yamaha ignition are single fire dual coil ignition and one coil fire for each on the compression stroke

Help me here Doc if im not right....

Im going to great lengths here because I like to know mechanically whats
goin on between my legs...
I am a Private Pilot and understanding Aerodynamics is a big thing ....when yer up there what keeps this sucker in the air???
A Motorcycle is not just two wheels with a motor... its a MOTOR with two wheels<br><br>Post edited by: Pop Rivet, at: 2006/09/23 03:56

V-twins first from Japan used dual pin cranks like the two Honda Shadows I owned

Weren't the Shadows (1100 &amp; 750) single pin? Or was that only the ACE models? I had a 2001 750 ACE before my Roadie and it was a single pin.

Funny thing... I had a 750 Shadow then traded it in on an 1100 Shadow then traded the 1100 to the Electraglide Harley
The Shadows were Dual pin crank and you are correct the Ace is single pin but
it doesnt sound like the R* for some reason???

Check this out
http://www.bc.edu/bc_org/avp/law/st_org/iptf/articles/content/1998101101.html

There is a comparison.... scroll 3/4 down

It doesnt sound like an single pin to me
It sounds like the Shadow.... maybe somebody screwd up<br><br>Post edited by: Pop Rivet, at: 2006/09/23 05:28

it doesnt sound like the R* for some reason???

We had the discussion on the ACE website I belonged to about why it didn't sound like a harley. I suppose the same kind of thing applies to the ACE / R*.

The reason the Harley sounds different is that they have a patent on the V-angle of their twins. Harleys have a 45 degree angle between cylinders and other bike companies can't copy that. A V-twn sounds so distinctive because the V-twin arangement and the single crank pin make for a very uneven firing order. The sound you hear the most is the &quot;Pop&quot; that happens when an exhaust valve opens and the exhaust is vented. On most opposed or parallel engines, the timing is symetrical, so it all sounds smooth and even. On V-twins, it's asymetrical and results in a sort or &quot;Pop..Pop...pause....&quot; sound. Or as Harley advocates say... &quot;Po..Ta..To.... Po..Ta..To....Po..Ta..To......&quot;

For example... on a Harley with a 45 degree angle, the firing order is something like ... Forward Piston fires... 315 degree pause... Rear Piston fires... 405 degree pause... Forward Piston fires... etc.

On the ACE, the angle is 52 degrees and therefore the firing order is Forward Piston fires... 308 degree pause... Rear Piston fires... 412 degree pause... Forward piston fires... etc.

Here's what my ACE sounded like with a stage 2 on the exhaust.

http://home.mn.rr.com/muskybait/DW_A0018.wav

First of all... the greater the angle the greater the disparity
between firing R* are 48 deg. harley 45 deg if you go to 51 deg
then you should have quite a gallop...

Musky that sounds like shit.. there is even firin there for sure,,, no gallop than i can hear

Musky that sounds like shit.. there is even firin there for sure,,, no gallop than i can hear

I think it sounded pretty good myself.

There ain't no gallop. And no matter how far down you turned the idle you still didn't get one.

I forgot where we were going with this now This is what happens when you fall asleep on the couch too early and wake up at 4:30 on a FREAKIN Saturday

Anyway, The ACE fires 1 cylinder on a stroke and the next cylinder on the next stroke. The Harley fires 1 cylinder on a stroke and the next cylinder on the same stroke but just X degrees furthur along. so there is a revolution or 2 before it fires again. That's why they sound so different in my opinion. Or I'm just proving I don't know what the hell I'm talking about. <br><br>Post edited by: Musky, at: 2006/09/23 07:07