Check out my in depth install and review of the Huben Power Notos dream valve, a super easy way to convert your Notos into a bottle gun. Fair warning, it's a very long video. I wanted to show everything step by step.
Umarex Notos - Huben Power Regulator
- Thread starter OnTargetAirgunner
- Start date
Excellent video and thanks for sharing it. I like this regulator and block but it’s just a bit pricey for this gun. I almost decided on getting one anyway (with the discount) but they want to tack on an additional $30.00 shipping…I’m out. The only option they give is air shipping.
Dave
Dave
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Not ported. I don't think I'll port it. Terminador industries has a notos vid that's ported l believe
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You may be able to get more fps by using higher hammer spring tension. Once the reg pressure reaches a certain level it will reduce dwell time on the valve and give a reduction in fps like you shows in the video. You can bring the dwell back up with more hammer spring tension. If you already have the stock hammer spring tension maxed by the adjustment screw you will have to change springs.
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Yeah my spring was maxed out. Definitely if you're wanting more power/velocity then different HS and probably some porting is needed.
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Bottle band from hotsnot3dprints on eBay aint a bad idea neither . Helped with stability and accuracy ...
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Mine is ported between bottle and reg drilled it to.177. so what size is it everyone else drill to? I also rounded up the old original hammer spring and installed it back. Just run 4 mags of 14.3 crosman hps. Stock transfer port. I'm backed all out on spring adjuster and showing 150b. What size TP is everyone drilling?
Weather: 88.5°F 3.0mph clear sky 1013hPa/mbar 29.91inHg 58%
Shot count: 27
Low: 756
Hi: 784
Avg: 775Airgun UK
STD Dev: 6
Spread: 28
9/17/24 11:59:31 AM,756,FPS,18.2,FT Lbs,
9/17/24 12:00:07 PM,768,FPS,18.7,FT Lbs,
9/17/24 12:00:21 PM,770,FPS,18.8,FT Lbs,
9/17/24 12:00:36 PM,765,FPS,18.6,FT Lbs,
9/17/24 12:00:53 PM,772,FPS,19.0,FT Lbs,
9/17/24 12:01:11 PM,770,FPS,18.8,FT Lbs,
9/17/24 12:01:39 PM,768,FPS,18.7,FT Lbs,
9/17/24 12:01:49 PM,777,FPS,19.2,FT Lbs,
9/17/24 12:02:05 PM,770,FPS,18.8,FT Lbs,
9/17/24 12:02:17 PM,775,FPS,19.1,FT Lbs,
9/17/24 12:02:32 PM,775,FPS,19.1,FT Lbs,
9/17/24 12:02:43 PM,777,FPS,19.2,FT Lbs,
9/17/24 12:03:00 PM,768,FPS,18.7,FT Lbs,
9/17/24 12:03:19 PM,777,FPS,19.2,FT Lbs,
9/17/24 12:03:31 PM,784,FPS,19.5,FT Lbs,
9/17/24 12:03:45 PM,779,FPS,19.3,FT Lbs,
9/17/24 12:03:58 PM,779,FPS,19.3,FT Lbs,
9/17/24 12:04:09 PM,779,FPS,19.3,FT Lbs,
9/17/24 12:04:22 PM,782,FPS,19.4,FT Lbs,
9/17/24 12:04:38 PM,782,FPS,19.4,FT Lbs,
9/17/24 12:05:01 PM,782,FPS,19.4,FT Lbs,
9/17/24 12:05:12 PM,775,FPS,19.1,FT Lbs,
9/17/24 12:05:25 PM,782,FPS,19.4,FT Lbs,
9/17/24 12:05:38 PM,782,FPS,19.4,FT Lbs,
9/17/24 12:05:53 PM,772,FPS,19.0,FT Lbs,
9/17/24 12:06:07 PM,779,FPS,19.3,FT Lbs,
9/17/24 12:06:19 PM,770,FPS,18.8,FT Lbs,
Weather: 88.5°F 3.0mph clear sky 1013hPa/mbar 29.91inHg 58%
Shot count: 27
Low: 756
Hi: 784
Avg: 775Airgun UK
STD Dev: 6
Spread: 28
9/17/24 11:59:31 AM,756,FPS,18.2,FT Lbs,
9/17/24 12:00:07 PM,768,FPS,18.7,FT Lbs,
9/17/24 12:00:21 PM,770,FPS,18.8,FT Lbs,
9/17/24 12:00:36 PM,765,FPS,18.6,FT Lbs,
9/17/24 12:00:53 PM,772,FPS,19.0,FT Lbs,
9/17/24 12:01:11 PM,770,FPS,18.8,FT Lbs,
9/17/24 12:01:39 PM,768,FPS,18.7,FT Lbs,
9/17/24 12:01:49 PM,777,FPS,19.2,FT Lbs,
9/17/24 12:02:05 PM,770,FPS,18.8,FT Lbs,
9/17/24 12:02:17 PM,775,FPS,19.1,FT Lbs,
9/17/24 12:02:32 PM,775,FPS,19.1,FT Lbs,
9/17/24 12:02:43 PM,777,FPS,19.2,FT Lbs,
9/17/24 12:03:00 PM,768,FPS,18.7,FT Lbs,
9/17/24 12:03:19 PM,777,FPS,19.2,FT Lbs,
9/17/24 12:03:31 PM,784,FPS,19.5,FT Lbs,
9/17/24 12:03:45 PM,779,FPS,19.3,FT Lbs,
9/17/24 12:03:58 PM,779,FPS,19.3,FT Lbs,
9/17/24 12:04:09 PM,779,FPS,19.3,FT Lbs,
9/17/24 12:04:22 PM,782,FPS,19.4,FT Lbs,
9/17/24 12:04:38 PM,782,FPS,19.4,FT Lbs,
9/17/24 12:05:01 PM,782,FPS,19.4,FT Lbs,
9/17/24 12:05:12 PM,775,FPS,19.1,FT Lbs,
9/17/24 12:05:25 PM,782,FPS,19.4,FT Lbs,
9/17/24 12:05:38 PM,782,FPS,19.4,FT Lbs,
9/17/24 12:05:53 PM,772,FPS,19.0,FT Lbs,
9/17/24 12:06:07 PM,779,FPS,19.3,FT Lbs,
9/17/24 12:06:19 PM,770,FPS,18.8,FT Lbs,
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On mine, the ports are drilled to 4.2mm. The hole between the plenum and valve isn't drilled but rather milled... it's equivalent to maybe a 6 or 7mm hole. With the huben reg reading 145bar (which seems to actually be more like 155 when reading my trustworthy gauges).
I'm getting ~815fps with 15.9gr JSBs. Hammer spring tuned for max fps, which is about 1 turn out on the screw. Stock barrel but a half inch shorter.
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4.5mm using a hand reamer to finish the hole.
Three hole thimble getting all that air in behind the projectile.
Three hole thimble getting all that air in behind the projectile.
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I filled to 30MPA and set regulator pressure to 15MPA. Hammer spring tension is adjusted to max pellet velocity then I back off tension till pellet velocity drops off about 5fps. I am getting north of 100 shots for 15MPA pressure drop. Good enough for my 25yd targets at 19ft-lb.
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