Homemade Compound Bow




What do you think about this video?

megadeth22885: im curious if you ever ran this bow through a chronograph?

Lukáš Benda: I think, the much better is create hendle, which is curve back. And this is because, you have longer pull on. On your bow only half arrow is used.

Robert Miller: do you have any schmatics for the cams for this bow that you can send me i have an e-mail on yahoo that is bob_miller151@yahoo.com if you e_mail me i will send you my mailing address so you can send me it along wit the size of them that i can work with thank you

Cameron Thomason: The string dosent go back all the way

IVYX: nice vid! you looked like Samy from Scobidoo.

Banay Niv: now that you have 3d printer you can make really good cams =P

Robert Miller: by the way how long are your limbs on this bow?

Robert Miller: also how do you string this bow completely from start to finish?

Robert Miller: also how did you attach the string to the out side of the cams or did you finaly attach them to the out side of the limbs?

Robert Miller: thank you also like I said if you call the spots mans guide they carry Kevlar cord in 25 foot lengths and sell it three for $13.49 which will come to 75 feet I am ordering to lots like that and it is very low stretch also.

Robert Yasumura: Loved the video. I've watched a few of your videos and my only complaint is the photography. You're back-lit a lot, so I can't see clearly what you're doing. I would also gently suggest that you be careful of drastic light changes, like shadows on a bright day. The camera can't handle it well, and so anything in shade is lost. Great work.

Robert Miller: by the way what is the diameter of your cams and how far in did you drill the holes for the axels also I have an idea to prevent that string slip that you had also I found a good source for string material and you can get it from sports man guide it is Kevlar cord the number is 1-800-888-3006 it is in their shooting catalog.

Robert Miller: by the way I have a suggestion for other builders if installing sights on the bows and if looking for a good sight light to light up the pins for low light use I have found a very good source that is also cheap it is the party finger lights that are sold in three packs at a local family dollar or similar place. they are only a dollar an light up the pin sight very nicely if interested and are very lite in weight.

Robert Miller: I am wondering how you attached your cables to your cam and also how you fixed the problem of cam lean I mean after you fixed the problem of the slipping and how you fixed that too?

Robert Miller: thank you i am in the process of building a compound bow i cheated on the cam thoe and bought one. I am flattening the whole limb tube but I am also placing fiber glass rods inside of the limbs and trying to bend the tube around the rod but in such way as it will be butted up against the rod ends inside the limb tubes for both strength and power but still having problem with idler wheel, can you give me any suggestions?

Robert Miller: hi again I have a question. can pvc be heated up enough to be bent around a 3/16 rod so that an axel hole can be formed and then epoxied in that position with out cutting or drilling so that It does not lose strength for using in the limbs of a diy compound bow? for instance the last two to three inches flattened and then folded over said rod so that rod is 90 degrees to the pvc limb tube so it is like an axel for the cams ans or idler wheel please get back to me and let me know also if you are interested in compareing ideas further and if interested in talking 1on1 my e-mail and messenger bob_miller151@yahoo.com I would greatly enjoy hearing from you on this matter.

Robert Miller: also i would greatly love to see complete build along videos on both this bow and other compound bows that you have made also on the experimental super short bow my wife likes the way it looks and is wondering if you have a complete build along for it and had an idea for it if possible if you made the riser a little longer is there any way that you could add tha same kind of sights like what you have on the larger compound bow that you made completely out of pvc also we were both wondering what the poundage was on the draw weight of the super short bow possibly for hunting as a survival bow for a back pack or truck bow just a thought or even a super short bow in a tree stand. would realy like to hear your thoughts on this.

Robert Miller: i wish that not only would you show how both of the cams are made, but also how they are strung completely. I am a big fan of this site and I have some ideas for improvements for instance instead of using 1/4-20 threaded rod how about using 3/8 or 1/4 inch strait rod and using sealed bearings in the cams and if possible idler wheel on your other bow also on your all pvc compound would you be able to do a built up riser handle simular to the one on the recurve with your special limbs? it is just a thought also instead of tapping the ends of the axle rods for nuts why not just drill and use either cotter pins or r-keys to hold the axles in place with both washers and spacersfor the strings?

JaycubL: That how-to video us up! If you are interested it is here: /watch?v=Q2tWEVKtSyg

JaycubL: Probably, you'll have to try it!

gregGRW: Great work man :)

Downsouthgaming: I´m impressed, superb job! I have been shooting recuve and longbow since I was a kid. And Ive just finished my 50th bow. So now is the time for a compound! Just wanna let you know YOU inspirred me to build it! Wish me luck:) Best regards from Denmark.

varun009: did you not watch the video?

JaycubL: I think something like 12-15 feet, I get the impression you might be making a similar bow?

JaycubL: I have it set up for 3 strings now and it needs a little more work so I could record the things you asked for. Another thing you may be interested is a compound bow I am working on that is made to be like a home made version of the "liberty bow." It ts made of cast aluminum everything and fiberglass limbs.

Leif Pikkarainen: No the cylinders were an overpowered vesion of of an airguns pistons

antonfoxity: this isn't a compound bow u mooron a compound bow has cams

JaycubL: I am holding a drawing for a free 50lb PVC takedown bow, if anyone would like to get their name in the drawing see my video for details: /watch?v=D4jkhOFm9Y4

Leif Pikkarainen: Hmmm seems like a nice bow. You should go deer hunting lol. Btw i like your videos they are epic bro.

UncleFexxer: Nice! That riser's a really sweet bit of woodwork.

byalexandr: How much did it cost to make this?

Robert Steele: Great job. I love to see people using their brains to make things out of nonstandard materials. Keep up the great work!!

JaycubL: Thank you! That means a lot coming from such a well known bowyer! I have learned a lot from your videos and of course have made my own improvements to the process. I might post a video of the way I make PVC recurves it as a response to one of your videos.

px223: i wanted to do one like this but failed numbers times , now i have some new idea , thanks

batfrog1: Excelent work! I love to see people using their heads.i've been working on a similar bow, made from red oak.

JaycubL: Yes as I have said several times now including in the video, the string was slipping where it is fixed to the cam on the first draw, and reducing the draw weight from then on. I changed the way it was strung up and it can not slip like that now because it is three separate strings. Kind of hard to explain. I am almost done with a how-to vid on making a different type of PVC compound bow, so maybe I will test this bow's real weight at the end of that.

JaycubL: Thanks! I'm glad to help your argument. You should show them this video and some of BackyardBowyer's stuff. I've got this strung up properly now, and while I haven't tested the draw weight it now feels more like 60-65# (it's strung tighter) and has a huge letoff percentage. I don't think the PVC takes a set at all, like wood might. The main problems with PVC are that it softens in hot weather and can be deteriorated by UV exposure.

Jieh47: I think he was talking about how much the bow weighs. Nice work though :)

byalexandr: Yes in fact, I just finished cutting the riser. Do you think I could put 3/4" PVC for the limbs? I want it to be about 25-30 lbs. of draw weight.

JaycubL: Um, if you realy want to buy this I would sell it to you for $70 + shipping. It does not currently have a string on it because after sitting with the string on it developed some cam lean. So I would need to make a new string and make sure the cams are straight then I could sell it to you if you want.

JaycubL: This has cams. Maybe you didn't see them because they are made of clear acrylic. But if that happened you must have been really not looking.

JaycubL: In most of the shots in the video yes, as I said the string was sliding and reducing performance a lot. That problem is fixed now. It is probably 50-60# peak weight now but only for a few inches in the draw (same as before but only for one shot, now it stays that way). The brace height is very high which reduces the total impulse too. One thing that is nice is that it has a very high let-off which makes it easier to be accurate with in my opinion than a non-coumpound bow.

JaycubL: See the response I gave to basically the same comment below (in reply to wrxyluv). It says right in the first part of the video why!

JaycubL: You may be a very skilled craftsman, I don't know. But your comments saying basically "oh your bow is so weak and useless" are offensive to me. So that is why I replied in that way.

JaycubL: Springs in a cylinder? I am not sure what you mean. Do you mean that the string was on wheels at the end of the limbs, and the wheels were spring loaded to twist and pull the string forward?

JaycubL: OH I see, cool. That is a very original way to make a bow.

daveuk2012: or put it in the description..

Eduardo Peña: you have plans or drawings?

Tyler J: not 50lbs might be 17lbs

JaycubL: Thank you for your advice. I like it how it is though. I am not looking for any more stiffness in the limbs, they could easily be remade as stiffer limbs by using the same type of pipe but not flattening the middle. There is a groove in the cam. It is the full width of the cam and is roughly parabola shaped. I guess it is hard to notice because there is not a corner in the center of the groove. The full-width groove makes it easier to get the string to track if the cam is not perfectly straght.

Rating:
Homemade Compound Bow 4.8 out of 5

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