T/D recurve help-along

Started by Balding Kansan, August 21, 2021, 11:16:38 PM

Previous topic - Next topic

0 Members and 1 Guest are viewing this topic.

Balding Kansan

I hate rudeness in a man...won't tolerate it. -Lonesome Dove
Hill Country Harvest Master
KennyM Swap bow

Mad Max

I would rather fail at something above my means, than to succeed at something  beneath my means  
}}}}===============>>

Balding Kansan

The hose plugs came in so I got my air hose setup. It took some finagling to get the clamps to where it wouldn't leak.

Do you guy typically put a laminate strip on the top of your form or did I dream that up?

I hate rudeness in a man...won't tolerate it. -Lonesome Dove
Hill Country Harvest Master
KennyM Swap bow

Crooked Stic

The top does not need a strip. but on each end I round off so there are no sharp spots that could puncher your hose.
High on Archery.

Balding Kansan

Thank you.

How much gap do you gents aim for between the top and bottom form?

And how much air pressure? I put 25 pounds on it to test and it's rock hard, but I was thinking 60 was where I needed to be? 60 seemed dangerous!
I hate rudeness in a man...won't tolerate it. -Lonesome Dove
Hill Country Harvest Master
KennyM Swap bow

Mad Max

What stic said

1" is how I do mine, drill and bolt you hardware on first and then mark 1" and band saw it.
Your dry run will tell you how much pressure, 40/50psi is plenty.
put 50 psi in the hose and stick the ends in a bucket of water and look for bubbles
I would rather fail at something above my means, than to succeed at something  beneath my means  
}}}}===============>>

Shredd

What Mark said... About 1" between forms...  You want the cross section of your air hose to resemble an oval racetrack... You don't want a dog bone shape...

Balding Kansan

Got it set at an inch. I got off a little at the butt end so it's more like an 1 1/8" but I was hoping with the wedges in that area it won't make much of a difference. I'll track down some steel straps and bolts to get it coupled together.

How much do you shim out the steel to get it to clear the air hose? I was thinking a 1/4" each side, maybe more?

I hate rudeness in a man...won't tolerate it. -Lonesome Dove
Hill Country Harvest Master
KennyM Swap bow

kennym

I use 1/2" plywood (it's a bit less ) so it doesn't bunch the hose there.

I bevel the top of the ones on bottom form to make it easier to set straps down over.

I would put something to hold lams in line with form. I use fender washers drilled off center so you can just swing them up and tighten the screw.

I don't worry about the tip end , only both ends of wedge and mid limb . You will grind off the edges at the tip anyway.
Stay sharp, Kenny.

   https://www.kennysarchery.com/

Shredd

Remember there is gonna be play between your bolts and holes... Drill holes square on a drill press... Bolt your straps to one half of the form with the straps pushed up hard on the bolts when tightened to replicate the straps under pressure of air hose... Now mark out the holes in the strap on the other half of  form... Allow for play in the bolts and holes...

Mad Max

I would rather fail at something above my means, than to succeed at something  beneath my means  
}}}}===============>>

Balding Kansan

I follow fellas, feeling pretty good about it so far. I need to add the little swing washers to keep everything in place, but I got the straps on tonight.

I hate rudeness in a man...won't tolerate it. -Lonesome Dove
Hill Country Harvest Master
KennyM Swap bow

Balding Kansan

I was contemplating not building an oven, but after reading the EA 40 specs it sounds like it really helps out the epoxy properties. But it's also confusing that it says to cure at room temp, then go into the oven. I thought most of you guys went straight into the oven with wet glue?
I hate rudeness in a man...won't tolerate it. -Lonesome Dove
Hill Country Harvest Master
KennyM Swap bow

Mad Max

Those 3 black screw are not going to work, open up the 2 lower  holes and use bolts and 1/2" plywood.
In the hot box cut time off. Does your truck get hot inside, start early in the morning and put it in there, put some cardboard under it and take it out the next day.
I would rather fail at something above my means, than to succeed at something  beneath my means  
}}}}===============>>

Balding Kansan

Yeah I don't like the screws either. I actually bought lags for it but they weren't long enough. Thanks for the tip, I'll get them swapped out.
I hate rudeness in a man...won't tolerate it. -Lonesome Dove
Hill Country Harvest Master
KennyM Swap bow

Mad Max

I would rather fail at something above my means, than to succeed at something  beneath my means  
}}}}===============>>

kennym

I put the same thickness plywood on the bottom form and use a 1/2" bolt thru there.  May not need it but that's how I started out...
Stay sharp, Kenny.

   https://www.kennysarchery.com/

Shredd

Quote from: kennym on September 01, 2021, 06:38:20 PM
I put the same thickness plywood on the bottom form and use a 1/2" bolt thru there.  May not need it but that's how I started out...

   1/2" Bolt all the way...  Anything less will bend...

Balding Kansan

The picture is deceiving. There's 1/2" ply under the bottom straps. I don't like how narrow I made them so when I switch out the wood screws I'll make some bigger 1/2" pieces. I found some longer lags. (2) 1/4" diameter lags per strap you think will bend? I'm happy to switch to bolts if you think so. I guess my thought was (2) 1/4's should have the same properties as (1) 1/2.

Thanks for all the feedback! Appreciate it.
No work on the form this evening, family is getting upset at my absence in the evenings!
I hate rudeness in a man...won't tolerate it. -Lonesome Dove
Hill Country Harvest Master
KennyM Swap bow

Mad Max

Go with one 1/2" like shredd  and Kenny said
I would rather fail at something above my means, than to succeed at something  beneath my means  
}}}}===============>>

Contact Us | Trad Gang.com © | User Agreement

Copyright 2003 thru 2025 ~ Trad Gang.com ©