Iwata HP-CS issues

Glad it helped Greg!

On the iwata if you tighten down the hose to much it puts pressure on the trigger a causes the trigger to feel stiff or spungie I have noticed it's worst after market gadgets such as water traps quick connect ext or just the hose.

I deal with it by using Teflon tape and don't tighten as fare. And there high volume an so they like higher pressure. But everybody mixes different.  Hope this helps.

That is absolutely true and I forgot it! Do what blackdog says and it will solve the problem if ant remains. Tightening too much causes the o ring to swell slightly. Backing it off a bit allows it to return to its proper shape. Happens a lot with Harder an Stenbeck airbrushes Excellent save blackdog!

Well thank you moneymaker66 happy to help and hope it works out.

blackdog62

On the iwata if you tighten down the hose to much it puts pressure on the trigger a causes the trigger to feel stiff or spungie I have noticed it's worst after market gadgets such as water traps quick connect ext or just the hose.

I deal with it by using Teflon tape and don't tighten as fare. And there high volume an so they like higher pressure. But everybody mixes different.  Hope this helps.

blackdog62

On the iwata if you tighten down the hose to much it puts pressure on the trigger a causes the trigger to feel stiff or spungie I have noticed it's worst after market gadgets such as water traps quick connect ext or just the hose.

I deal with it by using Teflon tape and don't tighten as fare. And there high volume an so they like higher pressure. But everybody mixes different.  Hope this helps.

Eureka!  The 3-in-1 oil appears to have done the trick.  I had to go buy a bottle, and the drops that came out of the applicator were large (couldn't find the old pen-type applicator), so I put some on a needle and put a small drop below the trigger yesterday morning.  I did just a little bit of airbrushing today, but ran 4 different colors through it, and the trigger worked perfectly.  I have some building to do before I will be able to sit down for an extended AB session, but so far so good!

For me, the issue was not over-tightening the hose connection.  I have been using the small water trap that came with the brush, and was able to loosen it almost a full turn before it began to leak air, and it did not help.  After applying the oil, I re-tightened the hose connection.

Strange thing is, I would bet almost anything that I had tried a drop of Iwata Super Lube below the trigger earlier, and it had no affect on it.  I would have thought the Iwata oil would have worked.

I will update this post in the future when I have been able to do more airbrushing.

Thanks for all the help, it looks like I may have the issue resolved.

Mine only seems to do it with after market parts. I'm using a after market quick conect with a mac. Valve now and its fine. I wish I could remember wich part coused that but I can't sry I'm a gadget guy I'm always trying different. Items.

I do believe. I wata makes some of the best airbrushes available. On the other hand I have never tryd I think it called a theyer chandler not sure if that's even close....:D

Chrisk-k

blackdog62

On the iwata if you tighten down the hose to much it puts pressure on the trigger a causes the trigger to feel stiff or spungie I have noticed it's worst after market gadgets such as water traps quick connect ext or just the hose.

I deal with it by using Teflon tape and don't tighten as fare. And there high volume an so they like higher pressure. But everybody mixes different.  Hope this helps.

 

Something's not right with your Iwata, I guess.  I have three Iwata AB's - HP B+, HP-CS and Revolution SAR - and none of them exhibit the behavior you mention.   Yes, I do very firmly tighten the hose, couplings, etc.. 

All my ab are bottom feeds it's just what I grew up with. I have had my hp-Bcs for several yrs and that was the only thing that ever effected it. I would like to invest in a nice top feeder. Anybody have any advice on the hp-cs

Glad to hear you got it worked out. Happy spraying to you.  :)

mgh, glad to hear the 3-in-1 sorted things for you. Hope it says sorted. Mine still working like new again thanks to modelmaker66.

blackdog, not sure what you are asking about the HP-CS. All I know is it seems to be widely used by scale modelers and I like mine just fine. It was my first gravity top feed brush, no going back for me. Started with a bottom feed decades ago, went to a side-grav feed less decades ago. I think you'd like the top grav feed.

Yep that's all I'm wondering bin using siphon feed for so long just looking for reason to buy a gravity feed

You know teaching a old dog a new trick.  :D

Another possibility is the curved lever that rubs against the back of the trigger and pulls the needle back needs some of that blue lube now and then. It can "rub" enough to make the trigger feel sluggish.