Thanks Mike, That's a good tip, though my tranny has only spent one night outdoors in it's life, and that was just for a break between drag races! ;-) BTW, my tranny is an 091 Type II with a locking differential, so there's some extra hardware and those beefy gears may be raising the noise levels compared to a stock Type I. I'll look at cracking the tranny case next time I need pull the motor, but will start experimenting with rubber mats for vibration dampening the rearmost body panels.
Jay Donnaway ------------------------------Message: 7Date: Mon, 11 Feb 2013 11:54:59 -0800From: Mike Brown <[email protected]>To: Electric Vehicle Discussion List <[email protected]>Subject: Re: [EVDL] Transaxle sound deadenerMessage-ID: <[email protected]>Content-Type: text/plain; charset="us-ascii"; format=flowedAt 08:40 AM 2/8/2013, you wrote:>The noisiest thing by far in my conversion is the gearbox. Though I >detailed to the nines,>>http://www.karmanneclectric.blogspot.com/2006/06/seeing-green.html>I'm thinking of burying that beauty by adding weight through >wrapping it in dynamat or similar material.>>Anybody done this or know of a lightweight alternative that won't >become waterlogged?>>disclaimer: yes, I solid-mounted the tranny, but have ridden in EVWs >with stock rubber mounts and they're just as noisy. My solid mounts >may make sound deadening harder though, given the added mode of >passing along vibes...>>JayBefore you consider any other cure-a lls for your colorful transaxle maybe you should check the appearance of the inside. But if you are reluctant to open the trans up ask yourself some questions. How long has the transaxle been sitting? Has it been any trans fluid in it during this dormant time? Is there a lot of moisture in the air where it was sitting?>Many years ago when I had the VW repair shop we had a problem with a >used transaxle we sold and installed. The customer claimed that it >was noiser than the one we had replaced. We ate the job.A month or so later the same customer in the same car gave the mechanic who worked for a ride to work and when they got to the shop my mechanic commented on how quiet the trans was. In the discussion following the customer said it was just as noisy as ever and swore that he would never bring his car to us again. We told him we intended to take full advantage of his offer and he left.After he left we determined that the cause of the noise to be rust inside the tr ansmission from sitting in a marginal shelterfor about a year in our almost year around morning and evening fog. The moisture put a thin layer of rust on any exposed steel part and caused the noise. Driving the car for a month polished the rust off the gears and it got quiet.What you might do is take off either the clutch bell housing and check the ring and pinion gears for rust. You might get lucky.Remember what Neil Young said " Rust never sleeps".Mike BrownElectro Automotive, POB 1113, Felton, CA 95018-1113 Phone 831-429-1989http://www.electroauto.com email [email protected] Car Conversion Kits * Components * Books * Videos * Since 1979------------------------------ -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20130211/902d9183/attachment.htm> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
