Thinking about putting this engine on a 36% Edge 540. Does anyone have any hands on experience with the 5.8?
Thanks,
Carroll

I have 2 Brison 95cc, one used for almost 4 years, and survived 10+ crashes. Terrific engines and very reliable. Just let the slow needle a little bit rich and it will never dead stick.

I agree, very good engine with a lot of bang for your buck. I flew 1.5 seasons of IMAC with a Brison 5.8 in a 35% Extra. Hauled the plane with authority.

Here is the draw back...........very difficult to make quiet. If your field has a noise issue or you are going to fly IMAC this may be a problem. I worked on this issue for almost 6 months. Here is what I came up with. Because the engine is a side exhaust, you can't build a header that will stay in the cowl. It will stick out the side. If this isn't an issue, than the majority of your problem is solved. I used K&S header parts from DA. Tell them you need a flange for a King 100. Also order the largest cannister they have. I don't remember the part number, but it is the biggest on the page. If noise isn't an issue, then ignore and have fun. It is a great engine.

Bryan

You know what I am going to say Carroll.......ZDZ 80!.....and you will be glad!

If you are thinking of using the Brison, you better call Greg and get your name in ths pot ASAP. There out now.

I would go with the zdz 80 and the tuned can that rc showcase sells. Plenty of power for you plane and the extra weight of the tuned can and you using a pull/pull will solve your balance problem. I like the 5.8, but its heavy, and I dont like the single bolt hub.....Charles

Great engine. I have one in a GSP.com Edge 540. I happen to like the mechanical advance ignition too.

How does the Brison 5.8 compare to the ZDZ 80 as far as vibration?

The cannister sold br RC Showcase is a great way to go, but it is NOT a TUNED can. Just a can. It's great since being a NON-tuned can the header length is not important. You can make the header as short as you want to fit your plane without worring about getting the wrong length.

My brison shaked, but not too bad. I have seen others that shook really bad, and some that shook very little. Hit and miss I think. I know the zdz 80 is pretty smooth (as smooth as a big single can be). I think a lot has to deal with how rigid the airframe is.

I have a Brison 5.8 in my Ziroli Corsair and love it. It has never failed me and vibration is reasonable for this size single. I am using an Abel muffler and it does a good job.

Ken

A few months ago my club created a noise cap of 94dB. My Brison was @ 102dB [X(], with stock muffler and 27x10 wood prop. Since we have more that 10 Brisons, and we live in Brazil (no easy UPS ordering), we created a new muffler. In my particular case, I got 93dB and, as a bonus 150rpm.

The execution costed less than US$ 30 per muffler.

I just bought a 5.8 here on RCU a few weeks ago. I was saving this engine the new Balsa USA 1/3 Fokker D-7 coming out. I noticed the 5.8 has six small screws holding the prop bolt to the crankshaft. I wanted to the look and the saftey of the multi-bolt prop hub. Does anyone know if there's a prop face plate and screws to fit the 5.8 prop hub?

Thanks

Jerry

...Take the six screws and stud out of the hub...Stick the stud through the backplate and drill six holes in it...Get some grade 8 10-24 allen bolts to hold the prop on...use the stud as a drill jig for the prop...Check the six prop screws every time you fly the plane, the prop will compress and when the screws start to get loose they will shear off...[8D]

Why is it everyone appears to be afraid of the single bolt prop hub????????? All the engines out here started with a single bolt hub until 3W stuck their multi bolt hub on the market. Were they any better or safer?? I doubt there is any proof to that, but since everyone thought they looked cool they had to have a multi bolt hub, too. The single bolt hubs work just fine, and don't loosen up any more than any other. Matter of fact the single bolt hub may be safer due to retaining more undrilled mass at the prop hub.

As far as vibration is concerned, a well balanced prop on a single cylinder "thumper" well go a long, long way to reducing the vibration level to close to that of most twins. Sheesh!!!!!!!

Pat

The multi bolt hubs were around with the first Q35s...The had something in the instructions about using the bolts to make the prop tips track exactly the same...All the A&Ms until the 2.0 had the six bolt hub, some with a single stud adapter...All the early G38s had drilled and tapped holes in the steel hub, but came with a single bolt....I like single bolts hubs better than six bolt, a 3/8-24 grade 8 or 9 prop bolt will hold ANY prop up to and including my 289cc twin racing engines...We use the single bolt to hold both the prop hub on the taper and the prop onto the hub..There is no key in the hub, just the taper..We put two 1/4-20 bolts thru the prop into the hub to keep it from slipping, but the single bolt would hold it with no problems if the two 14-20s were only partly into the prop...[8D]

Thanks Ralph.

I stand corected on the advent timing of the multi bolt hub. I'm certainly with you on the single bolt application, though. It just seems to me that a people can take caution to the point that it becomes fear, and that's not productive at all.

I also prefer a single stud hub. It does not slip on my 110, so I think it would be fine for a 95 single. There is no advantage on the size engines I run to have a multi bolt hub, plus I don't have to drill all those holes and remove all those soft bolts that some manufacturers supply.
As for safety, you can shear and loose a prop from most multi bolt hub but not from a single stud set up.

Jerry, not trying to talk you out of using the six bolt hub on the 5.8 (would look pretty cool on the D7 though) but will give you my comments on the single bolt adapter. When my Brison 5.8 was brand new I bought a single bolt adapter from Gary at Brison. It mounted with 6 10x24 tapered flat head screws. Yes, they are small but very strong. I did remove two opposite screws and used two 10x24 socket cap screws with counter bored holes in the prop to keep the prop from turning on the hub. I have been flying my Corsair with this engine (see post #11 above) for over 3 years with zero problems. This has been an excellent engine and should be really good in the big D7.

Ken

Nothing wrong with single bolt hubs if made properly and used properly.

Thanks for the message and sharing your neat solution. I was also wondering about the size of those screws! Thanks again.

For me, its really less about which type hub is better and more about having options. The reason I chose the 5.8 was because of the quality, power and reasonable cost. But what cinched it was the multibolt option. My plan was to initally put this 5.8 in a Giant Scale Planes 1/3 scale Cap 232 this year and use it with in the single bolt mode under a spinner. When I would tire of the Cap or when it crashed, I would take the engine out and use it in the D-7 so I would have a cool looking multi-bolt hub up front.

Jerry