Do you have a photo of that donut type damper - is it similar to the BMW type? 

Have a look on the internet for Lord Dynaflex Couplings, that's what Don Dunbar is using and sounds like it is ideal for the single rotor, I prefer Tracy's set-up for the 2 rotor.

George ( down under)

 

George,

 yes, it is the same in principle as on a BMW. In Europe it is a GIUBO from Italy.

 

Richard Sohn
N-2071U

 

Richard,

Thanks for that feed-back, I hadn't considered moving the dampening closer to the centre, this in fact makes it easier for design and manufacture.

 

I've seen and handled the BMW coupling, I found it quite heavy and overly bulky. Where as the Lord Dynaflex Model LCR -400-800-115A are similar in construction, less bulky and weigh less and cost about $40 ea Aust or about $30 US ( cheap).

 

Would you have a look on the internet and give me your opinion on this product . www.lordcorp.com/trade_names/Dynaflex.html

OR www.lordmpd.com/pdf/dynaelastomeric.pdf

TIA

George ( down under)