Mid-power loads for Q-Modeling RMS kits

[pcotcher]

And while I'm on the topic of being restricted by 24mm mid-power - about the ONLY thing that I've found that I don't like about the Q-Modeling RMS kits is that they are all restricted by a 24mm mount. With the through the wall fins, fancy engine mount hardware, etc. it would be tough to modify them to 29mm power (although I might on a second pass, especially for my Nike-X)...

My question comes in with the available mid-power engines for these rockets. Because they're 24mm power, I'm restricted to either the BP stuff that Estes offers (no thanks on an E9 in these heavier birds), or the FEW composite 24mm loads from Aerotech - and frankly, it's not that many.

The kits all recommend F21s, but it seems that those are gone, having been replaced by the F32 and F35 reload.

I've sent the guys at Q-Modeling a request to find out if they've tested their rockets on these Fs, but so far haven't heard anything back (I know it's the summer flying season, so they're undoubtedly busy).

Anyone tried any of these on their RMS rockets? I have the Andromeda, Nike-X and Vega. What delays are you using?

I guess I could use these as the excuse to start using rocksim - but figured I'd ask around first.

Have them all just about ready to fly, just want to get the appropriate engines ordered.

Thanks for your input!

Paul

 

[cjl]

Few? The 24/40 case holds nothing less than 8 different possible motors, plus there's the F35W for the 24/60 case. All of those should work just fine, assuming you have adequate thrust off the pad and choose the right delay (assuming the kit is built to take that kind of power - if it could take an F21 though, it should take pretty much any 24mm reload just fine).

 

[pcotcher]

Agree that the 24/40 case holds those loads, but most of those are not powerful enough to handle these larger/heavier rockets in anything other than utterly still weather. That doesn't happen much here, so that's why I was making sure that the F32/F35s were the right choice.

Just don't know how different the thrust curves are for the F32 vs. F21... Don't know how that translates through to picking the right delay either. Is the performance different enough to merit a longer/shorter delay...

Just trying to see if anyone has flown on any of those newer 95mm F loads.

 

[Nootnam]

i own the nike x and that thing flies on anything i put in it other than the estes E9. dont worry about not getting enough thrust out of the F35 because i constantly fly mine on an F12 and those have much lower thrust than the F35 and it flies straight as an arrow

 

[Handeman]

All those rockets weigh 11 to 14 oz and should fly fine on any Aerotech composite 18mm or 24mm SU or RMS motors with the possible exception of the E11J. Even that should be fine with a 6 foot rod instead of a 4 foot rod.

 

[brianc]

Just don't know how different the thrust curves are for the F32 vs. F21...

Here you go-

 

[cjl]

All those rockets weigh 11 to 14 oz and should fly fine on any Aerotech composite 18mm or 24mm SU or RMS motors with the possible exception of the E11J. Even that should be fine with a 6 foot rod instead of a 4 foot rod.

If they weigh 11 to 14 oz, any of the 24mm motors should work, as Handeman says. I would probably restrict the D9, E11, and F12 to calm weather though.

 

[Initiator001]

I've flown my Q-Modeling Nike-X on an AeroTech E15-4W. The performance was just fine.

I do agree on the value of the model having a 29mm motor mount. An AeroTech Econojet F20 would be cool...

 

[pcotcher]

Apparently they're working on a upgrade to some of their kits to have 29mm mounts with 24mm adapters.

The F20 was exactly one of the loads I was thinking of for the Nike!

Wish the F21s were still available (anyone know of a stash?)

Thanks for the input guys!

Paul