Yeah,the very first 72's had nylon washers on both sides of wristpin,between the rod and piston.They didn't last long at all,just a few tanks of fuel through them and they were gone.I bought mine from DJ Power and told him the problem and he sent me metal washers and parts to repair it.After that all the 72's had metal washers and no more problems.It is a great 3D engine with it's quick throttle response and torque.
Wonder if the 144 will have the same qualities.

Originally Posted by closetguy

Yeah,the very first 72's had nylon washers on both sides of wristpin,between the rod and piston.They didn't last long at all,just a few tanks of fuel through them and they were gone.I bought mine from DJ Power and told him the problem and he sent me metal washers and parts to repair it.After that all the 72's had metal washers and no more problems.It is a great 3D engine with it's quick throttle response and torque.
Wonder if the 144 will have the same qualities.

Engines designed using washers on the wrist pin dont have thrust washers on lower rod journal and support from latteral movement of the rod and destroying lower rod bearing and crank pin. I can see how this would have been a big cause of failers. Ive built a bunch of Suzuki LT500R motors in my shop with blown cranks and when I go to rebuild the crabkshafts most have been found to have had pistons replaced at one time and the "thrust washers" missing from the wrist pin as this model has that design. Most others the thrust washers are at the bottom of the rod.

Originally Posted by 3DJP

Weren’t the DJ 72’s having problems... we had one at the field didn’t make it through a gallon before it let loose.. but for your sake Cycletech I hope it holds up.. how’s the guys up north treating you! I’m gonna make my way up again and fly

Heck yeah J look forward to seeing you again!

Can you weigh it please (engine alone)?

Originally Posted by ghoffman

Can you weigh it please (engine alone)?

I would but I let someone barrow my digital scale months ago and I never went to get it back. Lol!

Originally Posted by ghoffman

Can you weigh it please (engine alone)?

2510g no muffs no ignition.. the very first post in this thread has a whole rundown of info if you wanna take a look.

i'm thinking a new DJ144 in a Flexx Mamba 120. having more power is always beneficial if it fits

Originally Posted by airboss/oc

i'm thinking a new DJ144 in a Flexx Mamba 120. having more power is always beneficial if it fits

Well, that is the point of a 144 over a 120! But is it more powerful than a GP-123 or DA-120? My 2011 vintage DA-120 turns a Falcon 28-9.5 at 6700 on quiet MTW -75 cans.

DJ claimed 28-10 8000rpm

wait for real tests...

Their 72 only had the power of a good running 60.They were suppose to do some improvements on it but I haven't seen any real world numbers yet.
8000 0n a 28-10 it will be a popular 144 engine if it does.

didn't the specs. for prop say 26x10-27x10 no mention of larger props.

I assume that is with the stock “mufflers”? A 28-10 at 8K with stocks would be ear splitting and not be allowed to fly a second time. A 29-10 might be more appropriate.

In reality it should be compared to a 150, and the props they use,and not the 120 class. But maybe it will be used in 120 class of planes,do guy's use 150's in 35% planes,It's been out for a while and there's not much info on props and rpm on it.Time will tell.

Lots of great stuff out or coming out.

The 144 is supposed to bolt up to 120 size airframes. Same with the DLE130 let the takeoff begin "A La Quisine"!! (Iron chef)

Having instant torque, better Downline braking are all great, I'd love to put on larger props on my 120 cc airframes and not lose on transition.