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All About Guns What's your weapon of choice, and why? Discuss the beloved speargun here!

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Old 10-22-2018, 12:58 PM   #1
fredfoes
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my 145 denton

Hi guys

as promised, I post the pictures of the construction of my denton 145.

as always, it starts like that




machining track, blank and mechanism




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Old 10-22-2018, 01:03 PM   #2
fredfoes
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Re: my 145 denton

and we continue









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Old 10-22-2018, 01:09 PM   #3
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Re: my 145 denton

around the handle











presentation of the mechanism and the reel

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Old 10-22-2018, 01:14 PM   #4
fredfoes
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Re: my 145 denton

montage de la poignée et finition





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Old 10-22-2018, 01:16 PM   #5
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Re: my 145 denton








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Old 10-22-2018, 01:18 PM   #6
fredfoes
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Re: my 145 denton

the best fit for an 8.5 mm



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Old 10-22-2018, 01:21 PM   #7
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Re: my 145 denton

real test






if you have questions, I will answer with pleasure.

fred
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Old 10-22-2018, 02:35 PM   #8
kodama
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Re: my 145 denton

Very nice work Fred! It seems like you made a beautiful gun!
Did you use carbon fiber in between the laminate?
I also wonder how your attached the handle to the metal back plate?

Can you give some specs like overall length, band stretch, type of bands, shaft length etc. ?


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Old 10-22-2018, 11:22 PM   #9
fredfoes
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Re: my 145 denton

Quote:
Originally Posted by kodama View Post
Very nice work Fred! It seems like you made a beautiful gun!
Did you use carbon fiber in between the laminate?
I also wonder how your attached the handle to the metal back plate?

Can you give some specs like , , type of bands, shaft length etc. ?


Sent from my iPhone using Tapatalk
hello kodama

overall length: 160 cm without carbon


band stretch: 145 cm


bands: sigal sub extreme 14.5 mm 380%

shaft: Devoto 8.5 mm x 180 cm

meca: ermes sub double roll

riser: mvd fixed in the stainless steel plate by a big screw

reel hunt 100 maxi

I have less than 10 cm parabola on a shot at 8m.


enjoy
fred





I am making a monoroller for reef spearfishing

Last edited by fredfoes; 10-22-2018 at 11:55 PM.
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Old 10-24-2018, 02:37 PM   #10
spearq8
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Re: my 145 denton

Holy Crap that came out incredibly well! Congrats and great job! Only 10cm of shaft drop at 8 meters is something people have to see before they believe it. People think I am crazy when I ask them to try a shot at a target at 8 meters … they just can't believe you just aim and the shaft will hit a little bit low. It is pretty funny to see their reaction when they are easily able to hit the target at that distance.

With the Sigalsub purple bands … those are tough bands to pull back and I have to say I don't like their performance. If you go with 14.7mm Primelines … very nice and stretch … easy to pull back even at 380% … and much better power with less effort and less recoil. The Sigal purple 14.5mm … @360% with new bands … total ball busters to pull back! Maybe the newer batches of Sigal are good though … but the batch I got are really hard and not stretchy.
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Old 10-25-2018, 01:57 AM   #11
Mikel_24
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Re: my 145 denton

The gun came out great! Did you get to add much ballast to get it neutral?

Mikel
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Old 10-25-2018, 11:44 AM   #12
fredfoes
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Re: my 145 denton

Quote:
Originally Posted by Mikel_24 View Post
The gun came out great! Did you get to add much ballast to get it neutral?

Mikel
20 grams at the front with the 8 mm x 180 cm
0 grams with the 8.5 mm x 180 cm
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Old 10-25-2018, 11:48 AM   #13
fredfoes
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Re: my 145 denton

Quote:
Originally Posted by spearq8 View Post
Holy Crap that came out incredibly well! Congrats and great job! Only 10cm of shaft drop at 8 meters is something people have to see before they believe it. People think I am crazy when I ask them to try a shot at a target at 8 meters … they just can't believe you just aim and the shaft will hit a little bit low. It is pretty funny to see their reaction when they are easily able to hit the target at that distance.

With the Sigalsub purple bands … those are tough bands to pull back and I have to say I don't like their performance. If you go with 14.7mm Primelines … very nice and stretch … easy to pull back even at 380% … and much better power with less effort and less recoil. The Sigal purple 14.5mm … @360% with new bands … total ball busters to pull back! Maybe the newer batches of Sigal are good though … but the batch I got are really hard and not stretchy.

Hello spearq8

I find the extremes much more flexible than the reactive but now I test the Kent sandals elastomer 14,5mm small id on sale at benthicsportshop











still very flexible at 420%
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Old 10-26-2018, 02:39 AM   #14
spearq8
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Re: my 145 denton

Quote:
Originally Posted by fredfoes View Post
Hello spearq8

I find the extremes much more flexible than the reactive but now I test the Kent sandals elastomer 14,5mm small id on sale at benthicsportshop











still very flexible at 420%

I got some of the grey 15mm small ID from Benthic but never had a chance to give it a try though. I like stretchy bands so long they are not too stretchy where they lack power (for example I don't like the Salvimar green stuff). 420% sounds way too much! I calculate band stretch as simply the distance of the band slot to the shark fin the x 2 and then divide by 3.8 (for 380%). I don't factor in the length of the wishbone and the turn around area of the muzzle.
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Old 10-26-2018, 12:53 PM   #15
fredfoes
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Re: my 145 denton

Quote:
Originally Posted by spearq8 View Post
I got some of the grey 15mm small ID from Benthic but never had a chance to give it a try though. I like stretchy bands so long they are not too stretchy where they lack power (for example I don't like the Salvimar green stuff). 420% sounds way too much! I calculate band stretch as simply the distance of the band slot to the shark fin the x 2 and then divide by 3.8 (for 380%). I don't factor in the length of the wishbone and the turn around area of the muzzle.


Hello,
sorry I do not know the gray model, I have those here

https://benthicoceansports.com/colle...mall-id-rubber
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