Shrox Icarus

[LW Bercini]

Does anybody have the fin patterns for the Icarus kit?

[the mole]

here it is. hope this post.

[Questor]

Does anybody have the fin patterns for the Icarus kit?
I see that someone has already posted for you. I already replied on TRF. I have the kit anf instructions and pattern sheet seperate. DO you still need anything?

[LW Bercini]

I see that someone has already posted for you. I already replied on TRF. I have the kit anf instructions and pattern sheet seperate. DO you still need anything?


Actually, the kit instructions would be helpful. I didn't think to ask for them. Thank you.

[dlazarus6660]

Uh oh!

[LW Bercini]

Uh oh!


What do you mean by that?

[mycrofte]

So, what does the rocket look like?
____________________________

[A Fish Named Wallyum]

http://www.rocketreviews.com/shrox-industria-icarus-bill-eichelberger.html

[johnnwwa]

Parts List:


1 18" BT-50 main body tube
1 6" BT-55 fuselage tube
1 3" BT-60 Bussard Collector tube
1 3" BT-20 Ward Pod tube
1 PNC-55
1 PNC-20
1 18mm engine mount
12" nylon parachute
shock cord mount
clay weight
1 launch lug
1 ping pong ball
3/32" basswood fin stock
3/32" wood dowel
shock cord

Question? What are the correct NC for this kit.
PNC-55 ?
PNC-20 ?
3/32" wood dowel What is the length?
And how much Clay weight?

[A Fish Named Wallyum]

Seems to me that the PNC-55AC and PNC-20N were the nose cones of choice. I'll have to measure the wood dowel tomorrow. The nose weight was a standard pat of clay. If you drill a hole in the ping-pong ball first it makes it easier to cut.

[tomm]

I'd love to buy an Icarus 'kit' if someone is doing a run of fins, etc.

Detailed parts list from the Rocksim file:

Sustainer parts
Nose cone Estes - Estes - PNC-55AC, Material: Polystyrene PS
Clay Nose Weight - Custom, Material: 1/8 In. flat rubber Mass: 0.375 oz.
Upper Airframe Estes - EST 3087 - BT-55, Material: Paper

Parachute - 12" Nylon Top Flight - - 12 in. Nylon Chute, Material: Rip stop nylon
Shock Cord - Custom, Material: 1/4 In. flat elastic

Inside Body tube Estes - EST 3086 - BT-50, Material: Paper
Centering ring Estes - Estes - CR-50-55, Material: Paper
Centering ring Estes - Estes - CR-50-55, Material: Paper
Forward Main Airframe Estes - EST 3086 - BT-50, Material: Paper

Dowel - Custom, Material: Birch; OD: 0.125 In.; Len: 2.000 In.

Front Half of Ping Pong Ball - Custom, Material: Polystyrene PS
Solid transition: Fwd. Dia: 0.976 In., Len: 0.625 In., Rear Dia: 1.375 In.

Aft Half of Ping Pong Ball - Custom, Material: Polystyrene PS
Solid transition: Fwd. Dia: 1.375 In., Len: 0.625 In., Rear Dia: 0.976 In.

Aft Main Airframe Estes - EST 3086 - BT-50, Material: Paper
Forward Centering ring Estes - Estes - CR-20-50, Material: Paper
Motor Tube Estes - EST 3085 - BT-20, Material: Paper
Engine block Estes - 30162-2 - Eng. block BT-20, Material: Paper
Aft Centering ring Estes - Estes - CR-20-50, Material: Paper

Fin #1 - Custom, Material: Basswood
Fin #2 - Custom, Material: Basswood
Fin Set #3a - Custom, Material: Basswood
Fin #3b 1 - Custom, Material: Basswood
Fin #3b 2 - Custom, Material: Basswood
Fin Set #4 - Custom, Material: Basswood
Fin #5 - Custom, Material: Basswood

Outboard BT-60 Estes - EST 3089 - BT-60, Material: Paper
Outboard BT-20 Estes - EST 3085 - BT-20, Material: Paper
Outboard BT-20 Nose Cone Apogee - - , Material: Polystyrene PS

Fin Set #3a Outboard Tube 1 Estes - - , Material: Paper
OD: 0.093 In. , ID: 0.092 In. , Len: 1.375 In.

Fin Set #3a Outboard Tube 2 Estes - - , Material: Paper
OD: 0.093 In. , ID: 0.092 In. , Len: 1.375 In.

Launch Lug Stand-Off - Custom, Material: Basswood

Launch Lug Estes - - , Material: Paper

[mwtoelle]

BMS (Balsa Machining Service) can make a set of laser cut set of fins from a RocSim file. You can find them here: http://www.balsamachining.com/ .

[tomm]

BMS (Balsa Machining Service) can make a set of laser cut set of fins from a RocSim file. You can find them here: http://www.balsamachining.com/ .


Thanks for that! Looks like setup charges per fin are $4, so that's a minimum of $24 for a single set of fins for the Icarus. Might have to break out my straight-edge and sharp knife me thinks.

[jetlag]

I think it's just $4 per set of fins as a set-up charge. Check with Bill to be sure at BMS. $4 per fin is way too steep to be a real cost per fin.
I just had 37 rocket stands cut from 1/8 compound board (3 parts each, #24 18mm, #13 24mm) and 18 fuselage formers cut from 1/8 inch Lite Ply for a 1/5 scale PICA Spitfire Mk IX, and the total for all that was only $110.

Allen

[tomm]

I think it's just $4 per set of fins as a set-up charge. Check with Bill to be sure at BMS. $4 per fin is way too steep to be a real cost per fin.
I just had 37 rocket stands cut from 1/8 compound board (3 parts each, #24 18mm, #13 24mm) and 18 fuselage formers cut from 1/8 inch Lite Ply for a 1/5 scale PICA Spitfire Mk IX, and the total for all that was only $110.

Allen

Nope. From the horse's mouth, as it were - there are 8 fin sets listed, each fin requires the setup.

So, that would be 8 x $4, or $32in setup charges for a complete Shrox Icarus fin set, plus the cost of materials and cutting per fin. Not very conducive for one or two sets of fins.

Perhaps there is an enterprising youth who wants to do a run of 10-15 sets and amortize the manufacturing cost? Otherwise, a sharp knife and steady hand will have to suffice. :)

[jetlag]

As I said: $4 per fin SET, not per fin.
I like Bill, but $4 per fin is silly. You could buy a whole sheet of balsa for that and cut enough fins by hand to build lots of Icaruses!
Sorry if I 'confussd' anyone!

A-

[tomm]

As most are want on this forum, I'd like to request a different Shrox design on this thread - specifically the SCRAMCAT, similar to the unopened kit that sold on eBay last night for $71 (plus $13 for shipping).

http://www.rocketreviews.com/file-42640/shx_scram_cat05.jpg

[jetlag]

As most are want on this forum, I'd like to request a different Shrox design on this thread - specifically the SCRAMCAT, similar to the unopened kit that sold on eBay last night for $71 (plus $13 for shipping).

http://www.rocketreviews.com/file-42640/shx_scram_cat05.jpg

That kit looks to be easy to clone, unlike some of his other stuff...

Allen