Generator vibration

[Hisham Amaral]

Scott Congratulations on your success. You maywant to looking into a better isolator than the rubber hose, try Granger's they have large inventor of isolators that may work. The next time you want to venture in doing more work. Best wishes, Hisham Amaral 97 WLWB Michigan --- On Sun, 10/5/08, Scott Forman <scottforman75@...> wrote: From: Scott Forman <scottforman75@...> Subject: [WanderlodgeForum] Re: Generator Vibration To: WanderlodgeForum@yahoogroups.com Date: Sunday, October 5, 2008, 4:06 PM SUCCESS! I suspected that the fan might be my big vibration source, and after disconnecting power to it and running the motor I was right. The vertical radiator and fan on the PT's are designed as a sub- assembly that comes out in one piece. This subframe attaches to the coach at three places...two under the radiator and one furter in towards the centerline. The two mounts under the radiator are rubber- isolated mounts, and even after all these years they are still doing a good job of minimizing vibration transfer. The culprit, though, was the third point. There was a plain metal pin attaching the subframe to a vertical frame member that is attached to the main left side frame rail. Vibration from the fan was passing right through that pin, up the vertical member, and into the main frame. Since the steering linkage passes through this frame rail, it was allowing transfer into the steering column and into my hands on the wheel. To address this problem, I used a floor jack to support the subframe and removed the metal pin. In its place, I inserted a bolt inside a length of small rubber hose. With the hose acting as an isolator, the amount of vibration transferred into the frame is greatly reduced. I am very happy with the results. Score one for shade tree engineering. Scott Forman 86 PT38 Shakin a little less in Memphis --- In "WanderlodgeForum%40yahoogroups.com", Hisham Amaral wrote: > > Scott > > Mount dampening and isolation in our case is experimentally done, We do not have the tools needed to do any computer designs to get the best dampening results. Therefor we haveto experiment with different mounts toget the desired result. My advise is to play with different durameter rubber mounts that will get you what you want in dampening the vibration you are getting from your Gen set.I would call (BB)CCW Engineering to see if they have any off the self mounts that can replace your existing mounts or would they suggest a vendor that can work with you to improve your condition. > I retired from automotive engineering 2 years ago and do not have any contacts in that area > I will make a few calls to my old friends at Chrysler to see if we can get any additional information that can lead you to an acceptable results. > Will talk again soon, and good luck, > > Hisham Amaral > 97 WLWB Michigan > > --- On Sat, 10/4/08, Scott Forman <scottforman75@ ...> wrote: > > From: Scott Forman <scottforman75@ ...> > Subject: [WanderlodgeForum] Generator Vibration > To: "WanderlodgeForum%40yahoogroups.com" > Date: Saturday, October 4, 2008, 8:11 PM > > > > > > > Does anyone have any good tricks for reducing vibration from the > Yanmar/Kohler generator? > > Scott Forman > 86 PT38 > Memphis >