Crossbows - Everything about Building, Modding, and Using your Crossbow Gear

Latest topics

» Medieval bowyer
by Dark Factor Yesterday at 12:30 pm

» Medieval composite bows
by kenh Yesterday at 10:55 am

» New crossbow builder
by wjbates1430 Tue Oct 17, 2017 2:10 pm

» Airsoft Crossbow-Finished at Last!
by JacobL Thu Oct 12, 2017 7:27 pm

» Powermaster Madness
by c sitas Wed Sep 27, 2017 8:41 am

» Powermaster
by c sitas Wed Sep 20, 2017 9:58 am

» Best wood for a novice?
by Geezer Sun Sep 17, 2017 9:21 am

» Adding a steel sear insert?
by Geezer Fri Sep 15, 2017 7:13 am

» Great Machines
by c sitas Sat Sep 09, 2017 5:39 pm

» Medieval Crossbow Bolts DIY Question
by Rumburak Thu Sep 07, 2017 12:17 pm

» Berkhamsted Castle and Glasgow Museum wooden prod crossbow
by Juniper Fri Aug 25, 2017 3:54 pm

» Beware of Alchem
by Archer46176 Mon Aug 21, 2017 3:33 pm

» How to measure and cut leather for prod
by Celtic Archer Sun Aug 20, 2017 5:56 pm

» Crossbow with built in lever?
by John Edgerton Thu Aug 17, 2017 12:38 pm

» Of Bows and Torsion Engines
by JacobL Mon Aug 14, 2017 12:03 pm

» Early Lever and pin Crossbow
by topfmine Mon Aug 14, 2017 8:56 am

» Crusader crossbow
by topfmine Mon Aug 14, 2017 8:53 am

» First Efforts
by rickraedeke Tue Aug 08, 2017 5:25 am

» aluminum prod
by Phil Abrahams Fri Aug 04, 2017 8:38 am

» First whitetail buck taken with medieval crossbow
by Phil Abrahams Fri Aug 04, 2017 3:38 am

» Airsoft Crossbow
by JacobL Wed Aug 02, 2017 9:11 pm

» Questions about steel prod specs
by JacobL Mon Jul 31, 2017 8:25 pm

» Faking a medieval composite crossbow prod.
by JacobL Mon Jul 31, 2017 8:13 pm

» Airsoft Bow
by JacobL Sun Jul 30, 2017 1:56 pm

» Hello All!
by JacobL Sun Jul 30, 2017 12:54 pm


    Aluminum Profile Arrow Track

    Share
    avatar
    Ivo
    Admin
    Admin

    Posts : 1041
    Join date : 2009-11-25
    Age : 29
    Location : NJ, USA

    Aluminum Profile Arrow Track

    Post by Ivo on Mon Mar 01, 2010 7:48 pm

    Hello,

    Arrow track is one of the key components in crossbow making and should not be overlooked. Thou when it comes to fabricating one it doesn't look to be too possible without access to a nice large milling unit.

    I wasn't able to locate a supplier of protruded aluminum profile that would fit our needs, perhaps you guys have had more luck than me.

    Thanks,

    Ivo




    * *
    ~ "I don't have any special talents. I'm only passionately curious."
    * * *
    ~ "All Genius is Simple"
    * *
    avatar
    Geezer
    Master Crossbowyer
    Master Crossbowyer

    Posts : 959
    Join date : 2010-01-12
    Age : 69
    Location : Austin, Texas, USA

    aluminum track

    Post by Geezer on Thu Mar 04, 2010 6:56 am

    Geezer here: I once saw a home-made crossbow that used an aluminum sliding-window track to guide his bolts. And the horrors didn't stop there! It was perfectly awful from end to end... Arrrgh, hot pokers for my eyes! I have seen that which should not be...! Geezer.
    avatar
    Ivo
    Admin
    Admin

    Posts : 1041
    Join date : 2009-11-25
    Age : 29
    Location : NJ, USA

    Re: Aluminum Profile Arrow Track

    Post by Ivo on Fri Mar 05, 2010 3:27 am

    Oh man...hot pokers for your eyes?

    I've seen some ugly stuff myself...made by grown people too.
    Hopefully our efforts here will help people like that overcome the "leaf-spring mounted on a 2x4" mentality and do their best.

    On topic...I did some research on this and it looks like our big crossbow companies are ordering "custom" extruded/milled/anodized profile for their bows. I'm thinking...perhaps there is a similar option available to the public?

    Guess we might need to do a separate topic on what people are looking for in an extruded profile arrow track.




    * *
    ~ "I don't have any special talents. I'm only passionately curious."
    * * *
    ~ "All Genius is Simple"
    * *
    avatar
    Fred
    Fresh Blood

    Doesn't mean
    I'm new to crossbows


    Fresh Blood Doesn't meanI'm new to crossbows

    Posts : 18
    Join date : 2010-01-18
    Location : Belfast, Northern Ireland

    Re: Aluminum Profile Arrow Track

    Post by Fred on Fri Mar 05, 2010 9:30 am

    Those cheap Tiawanese "rifle" crossbows with the plastic stocks use a short section of anodised extrusion so it must be manufactured somewhere.

    In all my years of crossbow building I have kept an eye out for suitable extrusions but I have never found anything thats quite right. Im resigned to milling my tracks from solid dural - nice but heavy.

    Fred
    avatar
    Basilisk120
    Moderator
    Moderator

    Posts : 548
    Join date : 2010-03-01
    Age : 38
    Location : Arizona

    Re: Aluminum Profile Arrow Track

    Post by Basilisk120 on Fri Mar 05, 2010 8:26 pm

    Yeah unfortunately most of it is only available if you can order large quantities of it. Hmm maybe I could do a larger order and sell some on the side for cost? What shape would be best? A V, U or some other shape? And what kind of finish do you want. I assume hard anodized aluminum.

    If I could get some dimensions I'll look around for some quotes from extruded aluminum suppliers.
    avatar
    Ivo
    Admin
    Admin

    Posts : 1041
    Join date : 2009-11-25
    Age : 29
    Location : NJ, USA

    Re: Aluminum Profile Arrow Track

    Post by Ivo on Sat Mar 06, 2010 11:48 pm

    I also found out that doing a custom protrusion will require the fabrication of a custom die of the desired profile shape...now that is for a single piece barrel like design. After looking at the new crossbow models I noticed some of them using either a much simpler and more accessible track solution.

    For example the Loved and Hated Twinbow uses a very interesting track composed of slightly modified "T" profiles.

    And others use a milled composite or plastic block insert tor a track housed in a square "U" shaped profile bed or even bolted directly into the full composite stock(This is from an ATA video so I could be wrong).I assume this approach was taken to reduce the costs associated with fabrication and future changes in design.


    V, U, dimentions? ....A lot of it depends on the string diameter and diameter of the
    arrow...Robin has a nice chart that explains this a bit. >>>
    http://www.thecrossbowmansden.com/Hints_%26_Tips/Entries/2007/10/20_Track_Dimension.html




    * *
    ~ "I don't have any special talents. I'm only passionately curious."
    * * *
    ~ "All Genius is Simple"
    * *
    avatar
    Fred
    Fresh Blood

    Doesn't mean
    I'm new to crossbows


    Fresh Blood Doesn't meanI'm new to crossbows

    Posts : 18
    Join date : 2010-01-18
    Location : Belfast, Northern Ireland

    Re: Aluminum Profile Arrow Track

    Post by Fred on Sun Mar 07, 2010 2:12 am


    Heres a photo of one of those extrusions. I wonder if it could be adapted to shoot balls. Note that the outside edges are a bit sharper than I would expect on a crossbow track. Perhaps this has been produced for some other application and simply used by the crossbow manufactures because its readily available.

    Fred
    avatar
    barsod123
    Fresh Blood

    Doesn't mean
    I'm new to crossbows


    Fresh Blood Doesn't meanI'm new to crossbows

    Posts : 22
    Join date : 2011-06-15
    Location : MN

    Re: Aluminum Profile Arrow Track

    Post by barsod123 on Wed Jun 15, 2011 4:34 pm


    I've been looking at this idea for awhile and found this site thats pretty cheap.(automation4less.com)
    They have multiple profiles, almost could do a kit/assemble a crossbow body
    avatar
    Basilisk120
    Moderator
    Moderator

    Posts : 548
    Join date : 2010-03-01
    Age : 38
    Location : Arizona

    Re: Aluminum Profile Arrow Track

    Post by Basilisk120 on Tue Jun 21, 2011 8:34 am

    barsod123- thats for the link. I ahve used that type of extruded aluminum before and it is really nice stuff. I hadn't thougt of using at a track before.
    I wonder if it would be practical to add something like Delrin to the T part of the groove to give the bolt somethign to sit on?



    Something Something Dark Side

    Sponsored content

    Re: Aluminum Profile Arrow Track

    Post by Sponsored content


      Current date/time is Thu Oct 19, 2017 12:17 pm