Re: How odd -- not really

Posted by HH56 On 2013/4/17 17:02:27

My two cents says R9s biggest issue is their parts seem to be more expensive today and the greater electrical/mechanical complexity makes it a candidate for expensive problems if something does go wrong. The electrical and having a non electrical person understand the sequences and contact action seems to be a large hurdle for some. If all is working properly, it does the job nicely. Since you already have the unit and a new harness plus it's the correct OD for the car, I'd say there isn't much reason not to put it in. I'm going to be installing my R9 back in the 47.

R11s were mostly put in the 47 cars because of the reverse lockup problem. They are simpler and don't have the electrical/mechanical issues which caused most of the R9 lockups. They basically have a power relay and a couple of easy to understand contacts & the mechanicals don't rely on spring loaded sliding sleeves which can bind or gum up.

If you go with the R9, IMO it would be a good idea to make sure the reverse safety switch is installed for that added bit of insurance.