MT 4 Blade Pirep

[Fly Boomer]

2 hours ago, Yooper Rocketman said:

That said, the better CG and lighter nose is well worth a bit of speed loss.

How would you characterize your W&B with the lighter prop compared to before?  Mine is way heavy on the nose.  That said, my last calculated W&B could be completely out to lunch.  I guess I'll have to weigh it.

[SkepticalJohn]

6 hours ago, Fly Boomer said:

How would you characterize your W&B with the lighter prop compared to before?  Mine is way heavy on the nose.  That said, my last calculated W&B could be completely out to lunch.  I guess I'll have to weigh it.

When I got mine, stock Rocket setup, I'm not sure how the previous guy was keeping it in CG. Having only two folks (350# total) in the fronts seat, required the full stack of Charlie weights in the tail and 100 pounds in the baggage to be in CG (I found camping water bags worked well for ballast - easy to fill when needed, empty on ramp when not) . I had the plane rebuilt and changed a lot of things - vacuum system delete, prop, avionics, etc... after rebuild I was able to delete all of the lead weights and quit carrying around ballast in the baggage. Most of the change was attributed to the prop, but they all helped a little.

You can get an idea of what your change would be by doing a regular W+B and subtracting 37lbs (someone please help confirm the difference in sock vs MT) at the station of the prop. 

John 

[glenn reynolds]

I'm considering replacing my O2 bottle with the smaller O2 when it comes due next year.  That would mean I have already lost 25 in the nose and then about 15 in the tail for a decent weight loss

[Fly Boomer]

14 hours ago, SkepticalJohn said:

When I got mine, stock Rocket setup, I'm not sure how the previous guy was keeping it in CG. Having only two folks (350# total) in the fronts seat, required the full stack of Charlie weights in the tail and 100 pounds in the baggage to be in CG (I found camping water bags worked well for ballast - easy to fill when needed, empty on ramp when not) . I had the plane rebuilt and changed a lot of things - vacuum system delete, prop, avionics, etc... after rebuild I was able to delete all of the lead weights and quit carrying around ballast in the baggage. Most of the change was attributed to the prop, but they all helped a little.

You can get an idea of what your change would be by doing a regular W+B and subtracting 37lbs (someone please help confirm the difference in sock vs MT) at the station of the prop. 

John 

Wow.  I'm surprised by getting rid of all the Charlie weights.  I have two of the three in the back, and thinking about adding the third.  I'll try the W&B recalculation minus 37 at the prop station.