Brodak 40's are in stock!!!

[steven yampolsky]

I just happen to swing by www.brodak.com and they listed Brodak 40's in stock so I gave them a call. Sure enough, they have them in stock!

If you are looking for more power than OS35S or Fox 35 and excellent stunt run characteristics, this is the engine to have!

[john e. holliday]

Just like Fox's, they have to have proper breakin.  Mine is going into the King Sweep.

[Brian Hampton]

I picked up a brand new B40 from Ebay some time ago but I believe there were a number of changes made to them as they were developed. Does anyone know what to look for to determine if it's a first, second, third, whatever, version?

[steven yampolsky]

Just like Fox's, they have to have proper breakin.  Mine is going into the King Sweep.

I ran six tankfuls(4oz) on a stand and plunked in in the plane. The engine kept getting better for the next 30 or so flights. It's been excellent since then(3 seasons).

[steven yampolsky]

I picked up a brand new B40 from Ebay some time ago but I believe there were a number of changes made to them as they were developed. Does anyone know what to look for to determine if it's a first, second, third, whatever, version?

The first batch of B40's had the timing that was not as designed by the engine designer and ran poorly. One way(unscientific one) to determine if it's batch 1 is to try and use it. They were extremely underpowered and finicky.
The second batch came with a muffler that had a small diameter stinger.
All batches after the first two had the correct timing and the right muffler.

[Bob Reeves]

I picked up a brand new B40 from Ebay some time ago but I believe there were a number of changes made to them as they were developed. Does anyone know what to look for to determine if it's a first, second, third, whatever, version?

Nothing external, most changes were minor tweaks and it really doesn't matter they all will run fine.

[Scott B. Riese]

THE first runs have issues. The front bushing goes very quickly. Mine went in 100 runs or =$1 per run.
The later engines are a good engine with all good results. I'm not here to bash any engine. HOWEVER, as with any new development there mat be some unforeseen issues..remember the Corvair

[Norm Faith Jr.]

The first batch of B40's had the timing that was not as designed by the engine designer and ran poorly. One way(unscientific one) to determine if it's batch 1 is to try and use it. They were extremely underpowered and finicky.
The second batch came with a muffler that had a small diameter stinger.
All batches after the first two had the correct timing and the right muffler.

I got mine around late 02 early 03??? I can't remember exactly when. I believe I've run a barrel or more of fuel through it, maybe three glow plugs, one muffler, one crash and only the "god of control line stunt" knows how many flights. "She's takin a lickin and kept right on ticken." IMHO...it always has and still does...have plenty of power. The "coolest" thing about my .40? It starts and stops the same way, every time I run it...same steady "4/2 growl" through out the run. One of the best engines, RC included, I've ever owned.


Norm

[Brian Hampton]

Thanks for the answers guys. It would seem I have one of the later engines then going by the fact the exhaust stinger is 9mm diameter which is more than large enough for a 40. The timing is exhaust 70 BBDC, transfer 62 BBDC, boost 60 BBDC, crank opens 43 ABDC and closes 48 ATDC. Compression (geometric) is 9.9:1 with .0145" squish clearance with the .2mm shim. I'll most likely end up taking out the shim to get a compression of 10.8:1 and .0067" squish because I don't use nitro.