Looking for rocket on a 38mm MMT

[BrAdam]

I am looking to purchase a kit with a 38 mm MMT. Economics of flying look like they will dictate that size. Any larger and the burning from my wallet is felt in the seat of my pants.

I would like to build the largest both in diameter and length that will fly on that size. I would also prefer a ship that goes more than several hundred feet in the air, so paper tube is probably better than fiberglass but I am open to suggestions.

Thanks in advance for the suggestions.

Brad

 

[Pantherjon]

Check here..After the Squat(which has a 54mm mount) everything else down the list to the 4" Frenzy come with 38mm motor mounts..All cardboard construction and MadCow makes great kits..

 

[qquake2k]

There are so many to choose from. LOC Minie Magg and LOC-IV, plus other LOC kits. Madcow, PML, Binder Design, Giant Leap, etc., etc. The list goes on and on. There must be dozens of kits with 38mm motor mounts. You're gonna have a hard time deciding. You can always scratch build a rocket with a 38mm motor mount, too.

 

[dlb]

Try Binder Designs.
They make a lot of kits for 38 mm motor mounts . all cardboard. and high quality kits.

 

[WILDMANRS]

I am looking to purchase a kit with a 38 mm MMT. Economics of flying look like they will dictate that size. Any larger and the burning from my wallet is felt in the seat of my pants.

I would like to build the largest both in diameter and length that will fly on that size. I would also prefer a ship that goes more than several hundred feet in the air, so paper tube is probably better than fiberglass but I am open to suggestions.

Thanks in advance for the suggestions.

Brad

You need to think about a little more than just price of the load, there is a reason I decided to make our Kits out of fiberglass.
First off I don't think anyone can argue that fiberglass fins are better than plywood.
There is a difference between cardboard, phenolic,quantum tube, fiberglass tubing, carbon fiber they all have there good and bad points.

Cardboard
the good
lightweight, less expensive in parts form

The bad
water destroys it , groves to fill to paint it , couplers are week, material not very tough


Phenolic
The good
lightweight, less expensive in parts form, doesn't come apart like cardboard in water.
tougher than cardboard.

The bad
Very brittle , groves to fill to finish paint.

Quantum tube

The good

much tougher than cardboard or phenolic, no groves to fill.

The bad

material has problem with temperature changes. couplers and pistons will stick in the cold, becomes flexible in extreme heat, heavy, more expensive than above.

Fiberglass

The good
much tougher than any of the above, no groves to fill, no problem with temperature changes, water will not hurt it.

the bad
much heavier than cardboard and phenolic, and heavier than quantum, more expensive than above .

Carbon fiber
the good
tougher than any of the above, light weight, no groves to fill.

The bad
very expensive. blocks radio signals.

My point here is if your new rocket gets hurt from a bad landing how much did you save ?
If you want to high and fast with a big rocket than build a rocket to go high and fast. you can buy a cardboard or phenolic rocket and fiberglass it to make it stronger,but you still have a cardboard or phenolic rocket rocket when you are done. or you can buy a fiberglass rocket to start with.

Look at this.
Wildman Jr, 54mm diameter basically 5 feet tall 38mm motor mount, capable of dual deploy stock all fiberglass $125.00

Hyperloc 835 4" diameter 6 feet tall ,54mm motor mount capable of dual deploy all cardboard. $127.

 

[Green Jello]

I would also prefer a ship that goes more than several hundred feet in the air

Brad...this sentence concerns me a bit. Do you have any idea what a 38mm engine entails? Are you high power certified or have plans to become so?

 

[kandsrockets]

Take a look at some of our kits. We have a lot that will fly on 38mm motors. https://www.kandsrockets.com/index2.htm

 

[qquake2k]

For someone just starting in high power, I'm not sure an all fiberglass rocket would be the best choice. They do require different building skills, and they're a lot heavier. Just my :2:.

 

[KenRico]

I just saw a Wild Child fly on a H180 skidmark...it really ripped on the 250ns plus motor.

On the flip side , it can be flown at a nar launch on a smaller field on a hobbyline G motor too, hopefully at Fiesta Island this sunday.

Have to agree with Tim the Wildman about durability, saw same wild child fall outta sky when the parachute perfectly blew foward and seated itself in the nose cone . No zap no epoxy no repair - reload motor and fly again.

Also a point , I don't think if re flown my 29/180 AT rms motor. Have gone smaller with 29/40-120 and bigger with 29/240 loads.but haven't flown the 180 again. Nothing wrong with it, just haven't . My fiberglass rocket gets flown at almost every launch next up is 10k ft milestone (if i don't get 2 miles) but need tracking or gps first, but the rocket is ready to go with almost any engine that will fit.

Kenny

 

[DizWolf]

Brad...this sentence concerns me a bit. Do you have any idea what a 38mm engine entails? Are you high power certified or have plans to become so?

Yea that also keyed for myself. Even a big rocket on a 38mm is capable of nailing a few thousand feet....

Though I'll toss in that the LOC worloc would be a good choice for low and slow on a 38mm. As for fiberglass kits, I'm not finding it too much different than cardboard with epoxy. Just a few other shaping techniques and tools to pick up. With such a wide variety of 38mm motors, I guess we could offer better advice if the OP mentioned which ones he's looking at. If he's looking at smaller one grain's like G78's even a mini magg is only going to go about 600 feet....something like a NPM or vulcanite would suffice in that case.

 

[Salvage-1]

There are already quite a few excellent suggestions on kits and manufacturers, I cannot add to that.

I can though add another idea.

Go to Toys R Us, get a Crayon Bank. You can get parts from various suppliers to turn this into a really nice, inexpensive workhorse rocket. It can go on various loads from F through I depending on how you build it.

 

[REK]

Apogee's Madcow Torrent sounds like the one for you. Hopefully it remains within your budget, it costs $134. It has everything to get you started with 38mm motors and also great for dual deployment experience (or single). It is also nice and big at 4 inches in diameter. Hope this helps.

 

[thobin]

Binder Design, Loc. Really most of the kit manufactures out there have good kits in that range. You just got to pick one that floats your boat. All I can say unless your build skills are dope, keep it simple for your first one.



TA

 

[scsager]

Looking for "Large diameter and length" > Consider the LOC Big Nuke - 5.5 inch diameter and 6 feet tall - It's a BIG rocket. :y:

54mm motor tube - but you use an adapter to fiy 38mm motors in it.

It sims to about 1100 feet with an I170 and should hit 3000 FT with a J420. :surprised:

Could you use this to get your L1 and L2 certs? Yes - but I don't think it's what most folks would think of for a "first" High Power rocket. *But it is really BIG*

 

[T-Rex]

I see great suggestions so I wont comment on that.

Something to consider is that you can always adapt down. Just because a ship has a 54mm mmt doesn't mean you can't fly it with a 38 or 29mm motor. My Madcow Little John (38mm mmt) has always been flown on 29mm motors because they are cheaper. My BSD THOR will fly this summer on 29mm motors, but the hole is 54mm. I have a few 38mm casings, and may even put them in the air one day, but for now I'll adapt down.

 

[BrAdam]

Thanks to all, especially Scott and Tim. Was looking for specific recommendations. The comment about the several hundred feet was to make the point that I don't want a giant rocket recommended, (think Steve Eves). It fits the criteria of tall and large diameter but for its motor class, not so high. Based on the suggestions, it looks like I have lots of internet browsing and simulations to run to narrow it down.

I also found the RDS Quasar. Anyone have experience with that or that brand of rocket?

Brad