BA Freak (155 conversion) & carbon circus

[97superjet]

Hurry up and finish this already! lol lookin good!

 

[fastgtfairlane]

Rc planes are where it's at! I got into them a year ago and it's been a darn good time learning to fly! I'm up to 7 planes now with 2 that have floats for water take off and landings haha. The most fun are the 70mm edf f16 thunderbird jet and the 90mm fa-18 super hornet with thrust vectoring. Highly recommend.

 

[DylanS]

Rc planes are where it's at! I got into them a year ago and it's been a darn good time learning to fly! I'm up to 7 planes now with 2 that have floats for water take off and landings haha. The most fun are the 70mm edf f16 thunderbird jet and the 90mm fa-18 super hornet with thrust vectoring. Highly recommend.

Ed was talking me into a starter foam plane lol, I would love to give it a shot after I’m done spending a fortune on this hobby!!
Looks pretty complex !

 

[fastgtfairlane]

Yep my first decent one was the hobbyzone apprentice 1.2m that was ready to fly for 300 bucks. Has optional floats for 30 bucks. The foam is great and much easier to repair than fiberglass haha. When they crash it's pretty easy to glue them back together again. The edf jets are badass. The f16 and f18 are both 100+mph jets out of the box. I wish I could post a little video of the f18 with the thrust vectoring. Flat spins, cobras, backflips are done with ease.

 

[DylanS]

Picking up a noco lithium tomorrow and I think we may have our first start. Just gotta find me a piece of exhaust tube lol.

 

[Aquaholic]

Man, that head looks good on there!

 

[Sanoman]

Picking up a noco lithium tomorrow and I think we may have our first start. Just gotta find me a piece of exhaust tube lol.

NAPA usually carries some reinforced exhaust.Try them Dylan

 

[DylanS]

Made up a mega turbo sick ebox holder out of junkyard aluminum to run for the season and slapped her down w some epoxy.

 

[DylanS]

Need to install the limiting rope and finish the bilge/switches.
Eventually I’d like to switch to a new tank and get a once piece silicone exhaust tube (RIP B1 Tube you died for a good cause) but I need to be on the water and testing ASAP.
This winter the water box will be sent out for powder as well and all new uniform stainless hose clamps are on the list..

 

[DylanS]

Oh btw if this one sinks I’m not coming back to shore so whoever finds it first can keep it

 

[Sanoman]

Oh btw if this one sinks I’m not coming back to shore so whoever finds it first can keep it

 

[DylanS]

Started it today
NLP9 is giving me a slow crank unless fully fully charged which is odd for a 400 cranking amp battery.
No hot cables and they’re all new..
When it slow cranks it’s kicking back even with the 20* start retard setting on
Fires up on fast crank and idles alright, had a bad hang in rpm but theirs a lot of air in the fuel line leading to the front most carb.
Changed fuel pumps and I’m going to give it another shot.

 

[Wetbuffalo]

Started it today
NLP9 is giving me a slow crank unless fully fully charged which is odd for a 400 cranking amp battery.
No hot cables and they’re all new..
When it slow cranks it’s kicking back even with the 20* start retard setting on
Fires up on fast crank and idles alright, had a bad hang in rpm but theirs a lot of air in the fuel line leading to the front most carb.
Changed fuel pumps and I’m going to give it another shot.

Do you have the 60 return jet installed?

 

[DylanS]

Do you have the 60 return jet installed?

Yessir, these carbs came strait brand new from Ed I haven’t even touched anything yet including in-line jet
New pump seems to be working

 

[Wetbuffalo]

Did you set the jets inside the carbs?

 

[DylanS]

Not looking so good
Can crack the throttle a few times then itll rev up again like the throttle plate was cracked even with them closed.
Pretty sure I’m pulling air somewhere BUT it idles completely fine and passed a leak down test, don’t think it could be anything else!

 

[Wetbuffalo]

Not looking so good
Can crack the throttle a few times then itll rev up again like the throttle plate was cracked even with them closed.
Pretty sure I’m pulling air somewhere BUT it idles completely fine and passed a leak down test, don’t think it could be anything else!

Are you running the jets that Ed installed or did you put your own jetting in it?

 

[DylanS]

Are you running the jets that Ed installed or did you put your own jetting in it?

It came jetted from Ed, sorry thought I posted the reply. Jetting is within where it was running last time by 5 points on both jets.. more worried about the front cyl revving up on its own after the throttle plates close
But then again massive air bubble AGAIN in my fuel line WTF!!

 

[DylanS]

It's probably the Primer leaking Air into the Fuel Line.

Primer Systems are Problematic.

You should know better.

Well I’d say you’re halfway there but it’s more of a “poor tuner” issue then a primer issue LOL

 

[DylanS]

We’re just gonna send it lol.
I rechecked leak down and only lost about half a pound at 10psi over 10 minutes. Unless it’s the front brand new crank seal leaking when it’s running I doubt that’s the issue. The ski also doesn’t run away, just has a second wind of brief rpm gain when shutting the throttle plates. Now this is all on the stand so in the water this will most likely behave totally different.
Anyways, it almost seems to me like pipe surging, if you’ve ever ridden a poorly tuned big cc two stroke dirt bike you’ve probably experienced it.
I haven’t really experienced this on a jetski before so I’m curious to hear other peoples inputs.
90% sure it’s a carb issue like @Wetbuffalo is getting at.
Hit it with a timing light and I’m at 25 ish static which is 2 off from where I set it. Going to adjust and see what it does in the water.