I cannot see the weight going that high, given that a twin installation weighs, say 320 lbs FWF. So, subtract the following:

1 rotor 10 lbs
1 rotor hsg 20
1 ctr hsg 25
1/2 eshaft est 5
1/2 coolant est 5
1/2 tension bolts est 5
Total 70 lbs
This gives 320 - 70 = 250 lbs

I plan on using the lightweight Racemate alternator, with just one shorter belt, this saves about 7 lbs.

Or if you like, the bare rx8 weighs 200 lbs, then a bare single should weigh 130 lbs. This agrees with Frank St Germain's helicopter engine weight of 135 lbs based on 1/2 a 13b Series 4 engine.

Any thoughts on these numbers? Dave McC (ever the optimist, and hoping George comes up with the Al end hsg)


On 17/06/2005, at 2:25 PM, George Lendich wrote:

Rusty,
By my figuring the one rotor with PSRU will be about 280 to 300 lbs, may be a little less if your really stingy - I don't know if I'd be too stingy with the oil though.
George ( down under)

Hi George,
Are you making a lighter drive for your single rotor?  How much do you figure it will weight?
 
Cheers,
Rusty