5th gear noise increase
I finally got my new 07 heritage out for a bit longer ride Tuesday. I hadn't gone past 50 mph yet , I still was under 50 miles total on the motor. But i was up to 50 and I shifted to 5th and noticed a considerable difference in the sound ,from the motor ,it didn't sound bad ,but a little loud. When I shifted to 6th it was very quite and smooth ,it felt like I was idling practically. I heard before about someones bike having louder gear noise in some gears. is this normal?
The shift points in the owners manual are conservative.
IMO 5th gear is 55mph of higher. Below 55 the whine definitely gets louder and you will hear lugging, ping, clatter, etc. I would say 57 on up the whine subsides.
Brake it in and at the 1000 or even earlier change to Red Line. Others like Amsoil. In time and with different oil the whine will be close to non existent.
just my 2 cents which aint worth much
Walt
This is not to say that other folks arent having issues with their bikes, but I've had 0.
These were my first 2 HD's and prior to that, I've owned at least one of nearly all the metric brands in my 30+ years of riding bikes. I'd not hesitate to buy another HD this afternoon if I was in the market for a new bike.
just my 2 cents, aint worth much...
Ride Safe People....OLH
So it makes noise in one gear, big deal. Has anyone been able to definitely point to it as being the cause of a single failure.
Can is be caused by a design quirk, very possibly. If what I have found out is correct 5th gear is different.
Unlike the rest it uses straight cut teeth instead of the helical cut teeth the rest of them have.
Straight cut teeth make noise, itâs an indisputable fact of life. They always have, and always will to one degree or another.
It can be mitigated somewhat by the use of insulation, not too practical. Thicker or more rigid case wall materials, again not terribly practical as it will make the bike heavier or the tranny bigger, or use better lubricants. Now thatâs something we can do for ourselves.
Remember a tranny is a collection of compromises, the size, its gotta fit in the frame. The weight, the dumb thing canât be made too heavy for the engine to turn it. But most important of all from a manufacturing standpoint is that it has to be COST EFFECTIVE. By that I mean the MoCo has to make and assemble a unit that will survive the anticipated stresses a factory engine is going to give it for the design lifespan of the bike, with the least amount of expected service, and they have to do all of that for a reasonable cost.
Anyone expecting them to make a tranny thatâs the equivalent of a big Swiss watch is fooling themselves, it doesnât have to be perfect, it just has to work. That they do and have done so for one hell of a lot of years is a testament to the engineers success in that regard. Sure they are always trying to cut a corner here and there. Its their job to minimize production and warranty service maintenance costs while still fulfilling the âprime directiveâ, its gotta work.
Baker and other aftermarket makers are constrained by the same âprime directiveâ and overall design criteria. Like weight, size, and shape limitations. But unlike the MoCo they are also making their boxes for people who for the most part have the money to spare and are also likely to use their box behind an engine that far exceeds the stock engines output capacity. So they have much greater latitude in the area of end product cost. They can AFFORD to make a slicker box.
So in summery I say if it makes noise, so be it. I didnât buy an electric golf cart, I bought a Harley. If it breaks, me and the service department are gonna have words. But as long as it fulfills its âprime directiveâ I can live with the little quirks, and an odd noise in 5th is defiantly a little quirk in my book.
The Best of Harley-Davidson for Lifelong Riders
You are correct... 5th gear in the '07 box is a straight cut gear..... in all of transmissiondom a straight cut gear in an upper gear, (not 1st or 2nd), is a most unusual application..... my '03 gear box isn't made like that??????? Guess what HD answer is as to why the puzzling choice???? BECAUSE helical cut gears cause a certain amount of side thrust to be created by the shaft and the freakin' cheapbearing doorcouldn't take the load!!! (this is why your clutch lever dances around.....your tranny shaft is actually bumpinginto your clutch!)So how does Baker get away with a helical cut 5th gear????? Pretty simple... they REVERSED the direction of the cut to transfer the load AWAY from the door AND made the new bearing door from a piece of billet! Pretty simple...heh???? Don't you wonder how 100+ years of tradition missed this one?
The Baker "Factory Six Fix" , (lol..I love that name), is working well beyondany expectationsin my brother's scoot and I am going to do a friend's FatBoy this week.... I bet I can do this one in half the time.
I love my Harley's... always will and HD will survive this when all these '07 boxes start grenading out there. This is not the first time I have had to deal with "quirks", but this one really has me pissed 'cause it was so easily forseeable and avoidable. I would expect an acne ridden first year high school autoshopper to have been able to catch this one! I put it right up there with $600 "American Heritage" HD leather jackets made in freakin' China...can't get me to buy them and I'll NEVER buy an '07.
I suspectH-Dused a straight cut gear on 5th and a helical on 6th as they probably expected riders would spend more time in 5th and 6th would be an overdrive. It is not unusual for automotive manufacturers to use circlips and plastic bushings in transmissions - it has been done for years and is generally reliable in normal use.
All manufacturers can at times have reliability / designissues that effect their products. Even the best and industry leaders have recalls. In fact, it is the service you get from the manufacturer after a problem (if there is a problem)is found I believe is the realissue. I will gladly deal with a company that is prepared to stand behind its product and recall to fix any problems.
For your info; In Australia H-D has had a 40% increase in sales of the 07 models from the 06 and our bikes cost on average of $30K AUD.
Anyway, my 2cents.
shep.


