Jump to content


Photo

Adhesive Polyurethane Domes

McMaster Part#95495K673

6 replies to this topic

#1 KoRnEd

KoRnEd

    Member

  • Members
  • 209 posts
  • Location:Pasadena, California
  • State:California
  • Country:United States

Posted 07 September 2014 - 02:52 AM

I ordered a pack of These and they seem to make really good soft domes that are aerodynmic. They seem to work extremely well on slugs.

The problem with these however is that polyurethane doesn't feed through hoppers at all and that these are pretty damn expensive.

Thoughts?
  • 0

20:07 tiredKitty living in NYC, you could spend a lot of time in Chinatown and only speak the mother tongue
20:07 tiredKitty Not a good idea, btw.

I have identified the problem: "maverick"


#2 ultranewt

ultranewt

    Member

  • Members
  • 35 posts
  • Location:green bay WI
  • State:Wisconsin
  • Country:United States

Posted 07 September 2014 - 10:53 AM

I know with silicone domes, corn starch on the tips can keep them from sticking. Also the lower angle in 3D printed wyes feed them a lot more reliably. Or you could try to tackle replacing the hopper with actual magazines designed for stefans, or a tube magazine like on this setro's PANB 870
  • 0

#3 archangel24

archangel24

    Member

  • Members
  • 215 posts
  • Location:Louisville
  • State:Kentucky
  • Country:United States

Posted 07 September 2014 - 02:22 PM

Zorn's optimal wye allows for use with silicone domes
Or you could just use RSCBs or even BRISCs.

Edited by archangel24, 07 September 2014 - 02:23 PM.

  • 0
QUOTE(Talio @ Oct 14 2010, 10:37 PM) View Post

I would much perfer a game that's free of KY. I like it rough. Right, Vacc?

"She went all Ghetto Fab on you."

#4 Drev

Drev

    Member

  • Members
  • 135 posts

Posted 07 September 2014 - 03:47 PM

Zorn's optimal wye allows for use with silicone domes
Or you could just use RSCBs or even BRISCs.

I honestly don't know why people have problems with feeding domes of any kind in their hoppers. Whether glue domes or silicon domes, I have had no more problems than with standard slugs. I use normal McMaster wyes and CPVC barrels with a PVC stub. What am I doing to make this happen? On the other hand, Zorn's wye design is great if you use longer darts and if you do have sticking problems.
  • 0
Check out my blog: Fly Nerf

#5 KoRnEd

KoRnEd

    Member

  • Members
  • 209 posts
  • Location:Pasadena, California
  • State:California
  • Country:United States

Posted 07 September 2014 - 07:32 PM

I can feed hot glue domes perfectly fine in hoppers.

These have high coefficients of friction with plastic, which means without a shallower angle on the hopper, the polyurethane would keep the dart static and the air would just move around the dart instead of bending it into the barrel.

I don't have a problem with these darts not feeding into my hopper. I'd rather use a breech; instead I want to know if anyone has tried these/use these and their experience with these. I've been making some darts with these and they seem to work pretty well.
  • 0

20:07 tiredKitty living in NYC, you could spend a lot of time in Chinatown and only speak the mother tongue
20:07 tiredKitty Not a good idea, btw.

I have identified the problem: "maverick"


#6 KaneTheMediocre

KaneTheMediocre

    Belligerent Asshole

  • Members
  • 612 posts

Posted 07 September 2014 - 09:22 PM

I honestly don't know why people have problems with feeding domes of any kind in their hoppers. Whether glue domes or silicon domes, I have had no more problems than with standard slugs. I use normal McMaster wyes and CPVC barrels with a PVC stub. What am I doing to make this happen? On the other hand, Zorn's wye design is great if you use longer darts and if you do have sticking problems.


You probably just have a little bit more power and volume. Silicone domes are only barely problematic with the 5.5" of draw and much-less-than-plusbow spring force of the ESLTs and RBPs. But slugs work perfectly under the same circumstances (which is PLENTY of power for aerodynamic, domed darts), so we have to warn/advise about their imperfect hopperability without cornstarch or special hoppers. Remember that many +bows and big blasts will even fire streamline darts through a hopper.

Also, many contaminants on the surface of the dart will reduce friction enough for consistent hopper feed. We use cornstarch because it's inert and cheap, but dry dirt or dust or basically any powder will have the same effect. Tiny amounts of oil (including the oil produced by human skin) will also dramatically reduce the friction and eliminate the hopper feed problems.
  • 0
RAINBOW CLAN FTW
I'm Purple

My Half-Baked MHA Site

#7 Drev

Drev

    Member

  • Members
  • 135 posts

Posted 08 September 2014 - 07:51 PM

You probably just have a little bit more power and volume. Silicone domes are only barely problematic with the 5.5" of draw and much-less-than-plusbow spring force of the ESLTs and RBPs. But slugs work perfectly under the same circumstances (which is PLENTY of power for aerodynamic, domed darts), so we have to warn/advise about their imperfect hopperability without cornstarch or special hoppers. Remember that many +bows and big blasts will even fire streamline darts through a hopper.

Also, many contaminants on the surface of the dart will reduce friction enough for consistent hopper feed. We use cornstarch because it's inert and cheap, but dry dirt or dust or basically any powder will have the same effect. Tiny amounts of oil (including the oil produced by human skin) will also dramatically reduce the friction and eliminate the hopper feed problems.

Ok, thanks for the info.

KoRnEd, I am definitely going to buy a package of these. They look promising.
  • 0
Check out my blog: Fly Nerf


0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users