Quantcast

Differences In Two Types Of Rails By Offered McMaster-Carr

The Rocketry Forum

Help Support The Rocketry Forum:

Fade_to_Black

Well-Known Member
Joined
Feb 8, 2009
Messages
101
Reaction score
0
I'm not really sure what the difference is between the two, they look about the same. The only thing I can think of is that the cheaper stuff is the "light" rail, which isn't quite as rigid as the standard, but I can't see it having any issues for rockets. I can tell you though, that they will ding you big on shipping for either the 8 ft or 10 foot. Anything over 6 feet is considered oversize.
 

Peartree

Cyborg Rocketeer
Staff member
Administrator
Global Mod
Joined
Jan 6, 2009
Messages
4,994
Reaction score
556
Location
Alliance, Ohio
However, if you are lucky enough to live in or near a city where McMaster ships from (and there are many), you might arrange to pick up your order and thus avoid oversize shipping charges? I'm pretty sure you can do this but not absolutely positive.
 

Stymye

Well-Known Member
Joined
Jan 21, 2009
Messages
7,568
Reaction score
4
the first is smooth profile , the other has the grooves in it,
 

Handeman

Well-Known Member
TRF Supporter
Joined
Jan 18, 2009
Messages
7,727
Reaction score
323
Location
Stafford, VA
Both are made from the same type of aluminum but it says #1 is clear anodized. That's the only difference I see.
 

bobkrech

Well-Known Member
Joined
Jan 20, 2009
Messages
8,351
Reaction score
28
Anyone know what the differences are in the below rail offerings by McMaster-Carr?
1) http://www.mcmaster.com/#60585k81/=3stzxg
2) http://www.mcmaster.com/#47065t122/=3su11g

#1 seems to be cheaper and offered in 10' length
#2 seems more expensive and not offered in 10' length

Are there other differences? Anyone know why i should favor one over the other?

Bob
All 80/20 rails are clear anodized.

Both 6' rails are identical.

8' and 10' rails are not UPS shipable so you may have to pay a higher shipping charge. If you need these lengths, check your local 80/20 distributor because you can go and pick it up, or get local shipping which would likely be cheaper.

Bob
 

georgegassaway

Lifetime Supporter
TRF Lifetime Supporter
Joined
Jan 18, 2009
Messages
4,558
Reaction score
401
Try Grainger’s if you can buy from them:

http://www.grainger.com/Grainger/items/2RCP9

They have an option where they ship it to their local store, then you pick it up at that store, for no shipping cost at all.

In this case, they only have 97” (8’-1”) and 72” lengths, 10’ is not listed.

They also carry the Faztek brand, functionally equal, but do not carry Faztek over 8 feet either.

- George Gassaway
 

Fade_to_Black

Well-Known Member
Joined
Feb 8, 2009
Messages
101
Reaction score
0
Look for a local fluid power shop. Many of those carry the 80-20 stuff. I get mine at a local shop in 12 foot lengths.
 

JDcluster

Well-Known Member
Joined
Feb 23, 2009
Messages
5,322
Reaction score
86
Location
New Jersey
The difference appears to be how many sides have the T-slot in them.
Look at the diagrams one page shows all sides are slotted while the other has 2 at 90 & 180 degrees apart. I bought two 6 ft sections a long time ago, our club still uses it. They tend to get pitted from many flights of the APCP exhaust.



JD
 
Top