HPA conversion - DE UTR45

[Pollynator_bravo2]

Afternoon

So I’ve had a gun come my way (fk why) which has been converted to HPA. It’s using a Titan Bluetooth2 trig unit and a Pulsar-S open bolt HPA engine. 
When you fire it the bb dribbles out the barrel (after you tilt it forward). When I put my finger on the barrel as I pull the trigger the airflow felt weak. Turned up the flow on reg not much changed. 
I changed the timings on the main valve(db) from 5ms up in increments of 5ms to 25ms and nothing changed. 
It’s not the Pulsar S with a purple nozzle it has the silver/beige noz. 

I read that it could be a problem with the feed lips. I did a quick check to see what the resistance was like by dropping a bb in and pushing it through. Tbh there wasn’t much there. I did the same with a spare hop I had which had a maple leaf bucking and there was a difference. I’ve swapped the hop and bucking over. I now have excellent air flow coming out per shot but now no bb is coming through the hop. 
 

I was wondering if the maple leaf lips were a fraction to long as I’ve had this before on an aeg I tweaked. 
 

anyone ever done any similar works that could guide me ?

 

[JVacation]

@Pollynator_bravo2 - The maple leafs are too long for the DE hop unit. You can probably shave the bottom lip a little bit though which should resolve it.

 

[Pollynator_bravo2]

@Pollynator_bravo2 - The maple leafs are too long for the DE hop unit. You can probably shave the bottom lip a little bit though which should resolve it.

Epic I’ll give it a go

 

[JVacation]

Just take it nice and slow. Will be the opposite side to the patch. Keep testing it by putting it back in the hop unit and dropping a bb down the feeding tube. As soon as it passes with no resistance you are good.

 

[Pollynator_bravo2]

Thanks. It’s on the job list for tonight ?

 

[Pollynator_bravo2]

Worked great thanks ? 

Need to find a mid cap now with a good spring