New Bamboo backed Ipe bow

Buemaker · December 18, 2015, 05:36:00 PM

Okay, I get it, did'nt look close enough.

LittleBen · December 18, 2015, 08:23:00 PM

I started testing the SG on my ipe too mike, and it seems like the darker it is the denser it is. Measured some that was like dark chocolate at 1.27SG.

It sounds almost like aluminum when you hit the board ....

Ismail · December 19, 2015, 02:45:00 AM

QuoteOriginally posted by Buemaker:
Okay, I get it, did'nt look close enough.

What is the steel dowel there for anyway? Cant figure it out.

mikkekeswick · December 19, 2015, 04:02:00 AM

To make the rope pull straight down on the bow and now out and down.

mikkekeswick · December 19, 2015, 04:04:00 AM

You can have your limbs 1 inch wide at the widest point. Use a pyramid taper and make your ipe lam 3/4 thick.
65 ntn is ok but a wee bit longer wouldn't hurt you if you haven't made many bows before.

Ismail · December 19, 2015, 05:43:00 AM

QuoteOriginally posted by mikkekeswick:
You can have your limbs 1 inch wide at the widest point. Use a pyramid taper and make your ipe lam 3/4 thick.
65 ntn is ok but a wee bit longer wouldn't hurt you if you haven't made many bows before.

When you say pyramid taper, you mean a pyramid style bow?

Roy from Pa · December 19, 2015, 06:35:00 AM

It's where I connect the other end of the pull rope. And I slide the rope to align with the black line on the wall for split finger or three under tillering.

macbow · December 19, 2015, 09:36:00 AM

65 inches is good I have built them longer forlonger draw lengths. As short as 62 inches for your draw length.
Leaving Them longer to start allows for adjustment to hit draw weight later.

I mke mine 1 1/4 inch wide to start out past the fades then taper to 1/2 atthe tips. This is later reduced to 3/8.

My starting thickness for a 50# R/D is about 1/2 inch.
This for the 1 1/4'starting width.

Bamboo at 3mm (3/8") is good.

Ismail · December 19, 2015, 09:58:00 AM

QuoteOriginally posted by macbow:
65 inches is good I have built them longer forlonger draw lengths. As short as 62 inches for your draw length.
Leaving Them longer to start allows for adjustment to hit draw weight later.

I mke mine 1 1/4 inch wide to start out past the fades then taper to 1/2 atthe tips. This is later reduced to 3/8.

My starting thickness for a 50# R/D is about 1/2 inch.
This for the 1 1/4'starting width.

Bamboo at 3mm (3/8") is good.

How come you start the tips at 1/2" then reduce to 3/8"?

Can I make the width shorter past the fades, maybe 1"? Any potential problems with that?

PZee · December 20, 2015, 05:23:00 AM

Hi Ismail,

It's pretty hard to get decent Ipe in South Africa. Although that board should do. Listen to what Roy says and you'll be fine. Haven't seen a finer bow builder of this type of bow anywhere. Once you've got a few under the belt, and you've collected a bit of data on the type of wood you are using you can start messing with width ect.

Wish we got o's age in SA.

PM me if you need any help, good luck.

Pete

Mad Max · December 20, 2015, 08:14:00 AM

Looks like osage
Cut 1/8" off one end grain and let us see.
X2 on listen to OLD Roy

Ismail · December 20, 2015, 09:41:00 AM

Ok, advice taken.
Will try and rip that 1/8" off tonight and post some pics.

Ismail · December 20, 2015, 09:46:00 AM

QuoteOriginally posted by PZee:
Hi Ismail,

It's pretty hard to get decent Ipe in South Africa. Although that board should do. Listen to what Roy says and you'll be fine. Haven't seen a finer bow builder of this type of bow anywhere. Once you've got a few under the belt, and you've collected a bit of data on the type of wood you are using you can start messing with width ect.

Wish we got o's age in SA.

PM me if you need any help, good luck.

Pete

Bow builders are few and far apart here in SA.

Maybe need to invite Roy down here someday soon.

Thanks PZee, will need the direction when I start my bow next week.

macbow · December 20, 2015, 11:14:00 AM

Might have a hard time getting Roy down that way unless they have Coors stocked.

Ismail, i leave the tips at 1/2 to start because it leaves room for adjustment with the string grooves till everything is established.
I shape the tips and overlays after the tiller is established.
The last 6 inches of my ends do not bend much mostly stiff.

Ismail · December 20, 2015, 03:15:00 PM

QuoteOriginally posted by Mark Daniel:
Looks like osage
Cut 1/8" off one end grain and let us see.
X2 on listen to OLD Roy

Got a better camera, so hopefully the pictures are a little better.

Heres the plank with a small piece cut off. There are some burn marks from the saw.

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PZee · December 20, 2015, 04:37:00 PM

Macbow.....

Roy will just have to come try some real beer in SA. Plus he can try them fancy bows on some african game. Maybe I could persuade him to leave one when he's done.....

mikkekeswick · December 21, 2015, 02:56:00 AM

Yep just the same as the plantation ipe i've had in the past. Wide rings and lots of early wood. Notice the straight grain from being quick grown straight up. I'll stick my neck out and say it will make a bow but will take more set than expected.

mikkekeswick · December 21, 2015, 02:58:00 AM

Roy - have you been bribing all these folks to say you're the best r/d bow maker in the World...bar none?!? You've got quite the following

I'd be flattered

Buemaker · December 21, 2015, 05:51:00 AM

I am wondering if the boards could be Bankirai. It is used a lot for outdoor decking and heavy construction. If you Google Bankirai and look at pics it looks similar.
http://www.tropicalbuildings.com/timber/bangkirai-specs/
The pic here is not so clear. Looking at one of the flat sides of your board it has the grooves of outdoor decking. Coul be.

Roy from Pa · December 21, 2015, 05:52:00 AM

I thought they were talking about another Roy.. LOL
Mac, LMAO. .