wildboy Posted July 27, 2011 Share Posted July 27, 2011 I have recently bought an old RDM 100 but it makes a metal on metal grinding sound when turning the prop. I think its coming from the clutch area. I wonder what oil I should get and where to put it as checking it over does not reveal an obvious 'top up' point. Also if anyone has a copy of an RDM 100 manual, I would be greatful. Quote Link to comment Share on other sites More sharing options...
pete_b Posted July 27, 2011 Share Posted July 27, 2011 If its grinding take it apart there is something wrong Quote Link to comment Share on other sites More sharing options...
wildboy Posted July 27, 2011 Author Share Posted July 27, 2011 maybe grinding is a bit harsh. It sounds more like chaffing. As in friction. It may just be that the prop is not spinning fast enough by hand to completely release the clutch, I dont know. Quote Link to comment Share on other sites More sharing options...
pete_b Posted July 27, 2011 Share Posted July 27, 2011 The clutch operates from the engine side so it could be bearings or no oil/grease, or it could be the shoe pivot points are worn causing the shoes to drag on the clutch bell. Quote Link to comment Share on other sites More sharing options...
nigel_d. Posted July 27, 2011 Share Posted July 27, 2011 I had a similar problem once on my top80. It was the clutch drum shaft bearings which had worn causing the bell to scrape the inside of the housing. Nige Quote Link to comment Share on other sites More sharing options...
nigel_d. Posted July 27, 2011 Share Posted July 27, 2011 ... or should I say "drum" to scrape the inside of the housing. Quote Link to comment Share on other sites More sharing options...
wildboy Posted July 29, 2011 Author Share Posted July 29, 2011 Thanks for the responses. I decided to take it apart and have a look today to see what was up. I undid the reduction bit and had a poke around. The clutch area looked and felt ok with no visible wearing like I thought may be the case. I used my fingure to spin around the clutch and the bearings span around without making a noise. Next I checked the smaller cog and that also span around without any sound and finally I span the large cog that spins the prop, again without any noise or problem. When I put the thing back together again and gave it a spin it made the noise again so I can only assume that the noise is coming from contact between the large and small cog. I cannot however see any signs of wear. The whole thing was full to the brim of oil which had a sickening smell to it that made me want to throw up but as the pics show, it looks relatively fresh and clean. I imagine perhaps the sound it makes may just be normal now but now that I have spilt all the oil over my driveway I am unsure what oil to put back in there and also how much to fill it up? http://imageshack.us/photo/my-images/684/sdc10937m.jpg/ http://imageshack.us/photo/my-images/13/sdc10939ba.jpg/ http://imageshack.us/photo/my-images/703/sdc10940z.jpg/ Quote Link to comment Share on other sites More sharing options...
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