Platypus bow

[superdav95]

Here’s a quick update on this bow.  Added a new stain job and redid the finish.  I added some string pads (Buffalo leather), new yellow and black d97 string and buff leather handle wrap.   It shoots very well and I may use this one this year from one of my tree stands with a rail.  This should work out nice as it’s fairly short bow at 54” ntn when strung.  Here’s a few pics of the bow as it sits now.  I’ll have to wait till my wife gets back to do a full draw pic.  Sorry.  . 

[superdav95]

Few more…

[airkah]

I really love your finishing work on this one!

Have you shot it through the chrono with the slats in? I'm really curious how this performs.

[superdav95]

Thanks Airkah  Very kind.    I haven’t yet but it seems fast.  It was a 40lbs bow prior to the slats.  If I were to guess it’s around 45-48lbs now.  I’ll do some shooting it tomorrow and convince the wife to be my cameraman.  😀

[bradsmith2010]

yes please some info on performance,,very cool bow

[superdav95]

No camera man today… but I did do some shooting with it today and got some promising results.  With the slats in it is pulling 45lbs.  It shoots about 5-10 fps faster then before at 10 gpp arrow.  Readings today were  ranging from 169-175fps.  I compared this with another boo self bow similar draw weight with no added slats and numbers were about the same only marginally higher.  Maybe 1-2 fps faster.  Not a huge difference.  I’m guessing this is due to the added mass possibility in the limbs.  I also noticed a strange noise when shooting this bow some more today.  The slats are sounding off when I release with a clap noise.  I may need a better buffer then the little piece of felt I used.  Other then that it dose shot well and I’m pleased with it.  I will make another bow and take what I’ve learned from this one to improve this idea.   Thanks for following along. 

[bjrogg]

That’s pretty cool Dave. And nice job finishing her up too.

Bjrogg

[Aaron1726]

Beautiful bow, and an interesting design.  Has me thinking...  you say there is a clap, so I wonder if the limbs are moving faster than the slat on the belly at release?  I would think ideally the slat should be trying to recover faster than the limbs to help push them through the shot.  Video would help to see the timing of that.  Not sure what you could do to affect it though.  Really cool idea though and the execution is amazing, really nice bow.

[bassman211]

Nice work.

[superdav95]

Thanks guys!   

[airkah]

Thanks for posting that! Pretty good numbers out of this design!

[Selfbowman]

Dave is there a way to mark the slats to the limbs of the main bow and check the he compression length? I know they stretch in tension about the thickness of the limbs.