4130 Tubing Cut Length (Ordering)

[bsrenter]

I am in the process of ordering my tubing for the fuselage, however there are some discrepancies I am having between the plans and a material list provided in the archives off the sonerai.net

The Sonerai II L material lists, states the following additional material are required:

20' 5/8" x .035 Round 4130
10' 3/4" x .035 Round 4130
20' 1/2" x .035 Round 4130

However, the spreadsheet available on the sonerai.net website for the S II L does not include this additional material. I am basing the cut guidelines for the longer lengths off of what has been provided in this spreadsheet.

It currently lists
*50' 1/2" x .035 cut into (5) 10' sections, however with the additional material this would be (7) 10' sections

*150' 5/8" x .035 cut into (15) 10' sections, however with the additional material this would be (17) 10' sections.

*50' 3/4" x .035 cut into (5) 10' sections, however with the additional material this would be (6) 10' sections.


I just want to make sure my cut lengths are correct with the additional material. If there was somewhere locally I could get this material I would not be as concerned, but since I have to order the material I am being more cautious.

Right now I have been going through the plans to verify these lengths and to determine if the cut lengths need to be any different for the additional material.

Attachments:

[bsrenter]

Also in regards to the square tubing.

The plans call out for 25' 3/8" x .035, 6' x .058, 10' 5/8 x .035 square tubing. I can account for some of this in the plans, but not all of it.

Has anyone used round tubing where it is called out instead of square?

[schrome]

BS,

The parts list in the plans is not to be trusted. The list from Sonerai.net I cannot comment on as I never saw it. If you really want accuracy, go through the drawings and tally each piece, then add a little for scrap allowance.

On the question of square versus round, either is OK for the longerons. The only place where square is absolutely required is the carry-thru box.

I feel your pain on those prices!

Ed
2LS

[schines]

I was frustrated with the materials list, too, so I am attempting to make an accurate one for all to use. I am not nearly done with my project and will need input from others, but here is what I have bought and used so far on the fuse:

24’ - 3/8”x3/8” .035 4130 SQ tube
8’ - 5/8”x5/8” .035 4130 SQ tube
6’ - 3/4”x3/4” .058 4130 SQ tube
20’ - 5/16” .035 4130 tube (2@ 10’ea)
32’ - 3/8” .035 4130 tube (4@ 8’ ea)
70’ - 1/2” .035 4130 tube (7@ 10’ea)
180’- 5/8” .035 4130 tube (18@ 10’ea)
3’ - 5/8” .058 4130 tube
40’ - 3/4” .035 4130 tube (5@ 8’ea)
4’ - 7/8” .049 4130 tube
1’ - 7/8” .065 4130 tube
6’ - 1” .035 4130 tube
4’ - 1” .058 4130 tube
6’ - 1-1/8” .035 4130 tube

If you are building a IIS, you need 10' lengths (4) of the 5/8" tube for longerons or else you will have to splice. Anything over 8' cannot be shipped UPS, so must be freighted. I chose to order in 10' lengths and freight it. (not much more than UPS anyway)
Scott

[bsrenter]

Is there any reason why you only used

40’ - 3/4” .035 4130 tube instead of the 60' called out in the plans?

Thanks