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

Latest topics

» My first Crossbow Tell me what you think!
by c sitas Thu Nov 15, 2018 8:45 am

» G/Day from Queensland Australia
by Andy. Thu Nov 08, 2018 3:15 am

» Here I go, overthinking again
by stuckinthemud1 Wed Nov 07, 2018 10:15 am

» What string material is safe for Alchem Steel prods
by c sitas Sat Nov 03, 2018 10:13 am

» what's the best glue
by kenh Thu Nov 01, 2018 1:51 pm

» Finished Crossbow - Thanks to all - here some pic and if anyone wants info let me know happy to help .
by Gnome Mon Oct 29, 2018 6:08 pm

» Advice needed re test rig?
by stuckinthemud1 Wed Oct 24, 2018 1:55 am

» yew and sinew prod help needed
by stuckinthemud1 Sat Oct 06, 2018 4:40 pm

» Ball shooting Crossbows worth the bother
by Seventeen76 Wed Oct 03, 2018 10:59 pm

» Crusader crossbow
by stuckinthemud1 Fri Sep 28, 2018 1:54 pm

» Plans and materials for my first build
by chilihook Mon Sep 24, 2018 11:53 am

» carving on early crossbows
by stuckinthemud1 Sun Sep 23, 2018 10:32 am

» invisible joints in bone spine-inlay
by Geezer Wed Sep 19, 2018 12:43 pm

» My 2nd crossbow project - german crossbow with cranequin
by MePilot1 Mon Sep 17, 2018 6:44 am

» Getting the best accuracy from a crossbow
by dutchbow Fri Sep 14, 2018 1:45 am

» Pictures of crossbow I have been build
by chaz Thu Sep 13, 2018 2:02 pm

» Sharp bend in the tickler
by Geezer Tue Sep 11, 2018 3:11 pm

» Bolt weight to prod poundage
by Geezer Mon Sep 03, 2018 7:10 pm

» Commecial slingshot crossbow
by chaz Wed Aug 29, 2018 1:20 pm

» The Arbalist Guild - Around the World
by chrisgo Tue Aug 28, 2018 10:18 am

» making my first crossbow string
by stuckinthemud1 Sun Aug 26, 2018 2:04 pm

» Looking for some help Identifying this crossbow
by Geezer Sat Aug 25, 2018 11:15 am

» Knot to secure nut twine?
by c sitas Fri Aug 24, 2018 8:28 am

» bolt rest advice
by stuckinthemud1 Mon Aug 20, 2018 4:23 pm

» what depth to Install a Prod and angle
by globalmark Fri Aug 17, 2018 11:19 am


    how made homemade (reverse) crossbow ?

    Share
    avatar
    ali.j
    Tinkerer

    If there is a will, there is a way.


    TinkererIf there is a will, there  is a way.

    Posts : 75
    Join date : 2013-10-30
    Age : 24
    Location : iran- shiraz

    how made homemade (reverse) crossbow ?

    Post by ali.j on Wed Nov 06, 2013 7:54 am

    ...


    Last edited by ali.j on Thu May 21, 2015 2:41 am; edited 3 times in total
    avatar
    Geezer
    Master Crossbowyer
    Master Crossbowyer

    Posts : 1065
    Join date : 2010-01-12
    Age : 70
    Location : Austin, Texas, USA

    Re: how made homemade (reverse) crossbow ?

    Post by Geezer on Thu Nov 07, 2013 8:27 am

    Ali: The weight of your cams... the pulleys on the outer ends of the bowstave/prod, is Very Critical.  You want any weight out there to be as low as possible. Given availability of suitable materials, you could probably cut your cam-weight in half, which would substantially increase your performance. Geezer
    avatar
    ali.j
    Tinkerer

    If there is a will, there is a way.


    TinkererIf there is a will, there  is a way.

    Posts : 75
    Join date : 2013-10-30
    Age : 24
    Location : iran- shiraz

    Re: how made homemade (reverse) crossbow ?

    Post by ali.j on Fri Nov 08, 2013 8:44 am

    ye mr geezer. Either way works well. and you can see today test Cool 




     and crossboe power is 54 kg = 119 pound ( lb)

    and cams wight in 76 gram Very Happy  

    Do you want to know how it's made? ( cams)
    Using a  4 metal washers and  one  bearings 




    I prefer to make all lonely. Even archery arrows 
    Leaves of palm tree...

















    my crossbow Until a week ago was ricrv but i czazy abou compound sistem so i chenge the crossbow to compound Cool 

    avatar
    Geezer
    Master Crossbowyer
    Master Crossbowyer

    Posts : 1065
    Join date : 2010-01-12
    Age : 70
    Location : Austin, Texas, USA

    Re: how made homemade (reverse) crossbow ?

    Post by Geezer on Fri Nov 08, 2013 9:13 am

    The video is good, and I appreciate your making things from locally available materials. 
    The bolts that hold your cams in place are longer than they need to be.  Cut them off flush, and the lost weight will go directly into your bolts.  Higher velocity, flatter trajectory, harder hitting. 
    Good luck.  Geezer
    avatar
    ali.j
    Tinkerer

    If there is a will, there is a way.


    TinkererIf there is a will, there  is a way.

    Posts : 75
    Join date : 2013-10-30
    Age : 24
    Location : iran- shiraz

    Re: how made homemade (reverse) crossbow ?

    Post by ali.j on Tue Jan 14, 2014 3:22 am

    tanx mr Geezer this new video . change recrve to compund sistem



    avatar
    kenh
    Crossbow Junkie

    I live here!


    Crossbow JunkieI live here!

    Posts : 772
    Join date : 2012-08-03
    Age : 70
    Location : Living Aboard a Sailboat in Fort Myers, FL

    Re: how made homemade (reverse) crossbow ?

    Post by kenh on Tue Jan 14, 2014 6:19 am

    Nice work, Ali.  Geezer is right about making the cams as light as possible.  You may be able to find some nylon roller bearing such as those on some furniture.  Also make your cams usng only 2 washers, not 4.  As said above the extra energy will go into your bolts.

    Hermit
    Workshop Savvy

    Did you see my tool collection?


    Workshop SavvyDid you see my tool collection?

    Posts : 245
    Join date : 2013-09-10

    Re: how made homemade (reverse) crossbow ?

    Post by Hermit on Thu Jan 30, 2014 11:21 am

    Nice work Ali,ingeneous idea for the trigger mechanism.
                                                  Hermit.

    Rizzar
    Workshop Savvy

    Did you see my tool collection?


    Workshop SavvyDid you see my tool collection?

    Posts : 192
    Join date : 2012-08-11
    Location : Germany

    Re: how made homemade (reverse) crossbow ?

    Post by Rizzar on Sat Feb 01, 2014 8:08 am

    Hey Ali!

    I like your work though the colors are not my taste (not only the blanket).   Wink 

    Especially the good idea with the trigger can ease work for many around here that are always searching for alternatives.


    But I do have concerns, too:
    To be honest what you have shown in the video when cutting out the limbs with a welding torch is one of the worst things you can to a leafspring in case you do not reharden and temper it properly.

    But, as I guess do not reach critical tension (low tip movement) on the limbs everything seems fine for your purpose.
    Just be sure to wear protection, keep a safety distance around and do not endanger someone when shooting.

    Greetings Rizzar
    avatar
    ali.j
    Tinkerer

    If there is a will, there is a way.


    TinkererIf there is a will, there  is a way.

    Posts : 75
    Join date : 2013-10-30
    Age : 24
    Location : iran- shiraz

    Re: how made homemade (reverse) crossbow ?

    Post by ali.j on Tue Oct 07, 2014 6:40 pm

    my new proje. try to made a scorpyd rdt crossbow.

    firest sisine and made stock




























    the compound limbs ( hard steel )








    http://www.uploaddd.com/uploads/25_14140631452008111.jpg

    disine cams...
















































































    scope rile mading














    90% complate...










    made wincher




    http://www.aparat.com/v/2RjQ6
    avatar
    kenh
    Crossbow Junkie

    I live here!


    Crossbow JunkieI live here!

    Posts : 772
    Join date : 2012-08-03
    Age : 70
    Location : Living Aboard a Sailboat in Fort Myers, FL

    Re: how made homemade (reverse) crossbow ?

    Post by kenh on Tue Oct 07, 2014 6:52 pm

    Very  interesting!  More hand work than I want to do, but very nicely done!
    avatar
    Todd the archer
    Crossbow Junkie

    I live here!


    Crossbow JunkieI live here!

    Posts : 581
    Join date : 2010-02-25
    Age : 56
    Location : sellersville,pa.

    Re: how made homemade (reverse) crossbow ?

    Post by Todd the archer on Wed Oct 08, 2014 2:20 am

    Great work, especially when you consider what you have to work with.

    jeep
    Crossbow Junkie

    I live here!


    Crossbow JunkieI live here!

    Posts : 379
    Join date : 2011-04-07

    Re: how made homemade (reverse) crossbow ?

    Post by jeep on Wed Oct 08, 2014 12:04 pm

    Hurrah! for the brave!! And it look very powerful.. What is the weight of the beast?
    avatar
    ali.j
    Tinkerer

    If there is a will, there is a way.


    TinkererIf there is a will, there  is a way.

    Posts : 75
    Join date : 2013-10-30
    Age : 24
    Location : iran- shiraz

    Re: how made homemade (reverse) crossbow ?

    Post by ali.j on Wed Oct 08, 2014 12:06 pm

    tanx. this lims power is 130 lbs I think that up to 180 _200 lbs power. soo today i tray to made a new hard steel lims. was so defecult to me.





    avatar
    ali.j
    Tinkerer

    If there is a will, there is a way.


    TinkererIf there is a will, there  is a way.

    Posts : 75
    Join date : 2013-10-30
    Age : 24
    Location : iran- shiraz

    Re: how made homemade (reverse) crossbow ?

    Post by ali.j on Wed Oct 08, 2014 12:14 pm

    Rizzar wrote:Hey Ali!


    Especially the good idea with the trigger can ease work for many around here that are always searching for alternatives.

    ....
    .

    Greetings Rizzar

    tanx dear rizzar.
    in new crosbow proje i use an other trigger sistem. is faster reaction trigger and With very little pressure works (60 gram) 
    plz see this my video about new crossbow.




    '










    avatar
    ali.j
    Tinkerer

    If there is a will, there is a way.


    TinkererIf there is a will, there  is a way.

    Posts : 75
    Join date : 2013-10-30
    Age : 24
    Location : iran- shiraz

    Re: how made homemade (reverse) crossbow ?

    Post by ali.j on Wed Oct 08, 2014 12:20 pm

    jeep wrote:Hurrah! for the brave!! And it look very powerful.. What is the weight of the beast?
    crossbow wight is 4.7 kg now.  and power limb is 130 pound

    stm2010
    Fresh Blood

    Doesn't mean
    I'm new to crossbows


    Fresh Blood Doesn't meanI'm new to crossbows

    Posts : 46
    Join date : 2013-01-08

    Re: how made homemade (reverse) crossbow ?

    Post by stm2010 on Wed Oct 08, 2014 8:47 pm

    Very comprehensive processes,you made everything manually。
    avatar
    ali.j
    Tinkerer

    If there is a will, there is a way.


    TinkererIf there is a will, there  is a way.

    Posts : 75
    Join date : 2013-10-30
    Age : 24
    Location : iran- shiraz

    Re: how made homemade (reverse) crossbow ?

    Post by ali.j on Thu Oct 30, 2014 1:09 pm

    my home made rdt crossbow is 95% complate.  Cool

    its my home made rdt crossbow.  Cool










    avatar
    Todd the archer
    Crossbow Junkie

    I live here!


    Crossbow JunkieI live here!

    Posts : 581
    Join date : 2010-02-25
    Age : 56
    Location : sellersville,pa.

    Re: how made homemade (reverse) crossbow ?

    Post by Todd the archer on Thu Oct 30, 2014 6:09 pm

    You are a craftsman! Good work>

    Todd

    Andy.
    Tinkerer

    If there is a will, there is a way.


    TinkererIf there is a will, there  is a way.

    Posts : 82
    Join date : 2014-09-05

    Re: how made homemade (reverse) crossbow ?

    Post by Andy. on Thu Oct 30, 2014 11:37 pm

    Yes great work!

    How does she shoot?
    avatar
    ali.j
    Tinkerer

    If there is a will, there is a way.


    TinkererIf there is a will, there  is a way.

    Posts : 75
    Join date : 2013-10-30
    Age : 24
    Location : iran- shiraz

    Re: how made homemade (reverse) crossbow ?

    Post by ali.j on Wed Nov 05, 2014 4:56 am

    today .... test.




    today Chronographi test
    31 grams ( 500 grain) arow shoting at 350 fps.

    and group shoting test 
    distance 35 meters
    home made rdt crossbow. 185 lbs.
    : ( red arrows home made 25 grams - gray arrows 31 grams horton)
    i need beter cams.
    avatar
    ali.j
    Tinkerer

    If there is a will, there is a way.


    TinkererIf there is a will, there  is a way.

    Posts : 75
    Join date : 2013-10-30
    Age : 24
    Location : iran- shiraz

    Re: how made homemade (reverse) crossbow ?

    Post by ali.j on Sun Nov 23, 2014 12:09 pm

    خب اینم یه پست بدون شرح تصویری. تعداد زیاد عکسها به منظور آشنایی با جزییات ساخت و مستندوار شدن پست هست. تا شاید بعد کسی بخواد بسازه روش های ساخت دستش بیاد؛ آلمینیوم آلیاژی شماره 7075 هست اهل فن میدونند یعنی سخت ترین نوع آلیاژ آلمینیوم و کارکردن باهاش باتوجه به امکانات ناچیز بنده بسیار سخت وبرای تکمیل همین یک کم دوروز وقت آزادم صرف شد. 

    ( عکس ها به ترتیب )



    Well here's a post without explanation. The large number of photos to be familiar with the details of construction and the post is documented. Maybe someone wants to build a way of making him come; No. 7075 aluminum alloy is an alloy of aluminum and expert knows that the hardest working very hard, I'm considering the meager facilities for the completion of this a little, two days was spent on the free time.
































    اینم کم جدیددرکنار کم ساندویچی قدیمی؛ فعلا وزنشون نکردم 


    old cam - new cam

    avatar
    ali.j
    Tinkerer

    If there is a will, there is a way.


    TinkererIf there is a will, there  is a way.

    Posts : 75
    Join date : 2013-10-30
    Age : 24
    Location : iran- shiraz

    Re: how made homemade (reverse) crossbow ?

    Post by ali.j on Wed Nov 26, 2014 9:21 am

    new cam wight 168 grams. i made 2 new cam.

    soo  my rdt is complate 97%





    avatar
    kenh
    Crossbow Junkie

    I live here!


    Crossbow JunkieI live here!

    Posts : 772
    Join date : 2012-08-03
    Age : 70
    Location : Living Aboard a Sailboat in Fort Myers, FL

    Re: how made homemade (reverse) crossbow ?

    Post by kenh on Wed Nov 26, 2014 9:36 am

    Looking really good so far.  Now for the 3% string!
    avatar
    ali.j
    Tinkerer

    If there is a will, there is a way.


    TinkererIf there is a will, there  is a way.

    Posts : 75
    Join date : 2013-10-30
    Age : 24
    Location : iran- shiraz

    Re: how made homemade (reverse) crossbow ?

    Post by ali.j on Wed Nov 26, 2014 4:33 pm

    need string  and better fod place and Rubber bumpers string.

     tonight photos.











    avatar
    ali.j
    Tinkerer

    If there is a will, there is a way.


    TinkererIf there is a will, there  is a way.

    Posts : 75
    Join date : 2013-10-30
    Age : 24
    Location : iran- shiraz

    Re: how made homemade (reverse) crossbow ?

    Post by ali.j on Thu Nov 27, 2014 2:31 pm

    )






    Sponsored content

    Re: how made homemade (reverse) crossbow ?

    Post by Sponsored content


      Current date/time is Sun Nov 18, 2018 6:02 pm