HELP: Brison 3.2 Tuning
05-21-2004 | 10:31 PM
#26
Senior Member
My Feedback: (1)
RE: HELP: Brison 3.2 Tuning
Thank you, Bas.
Regarding Zenoah engines. I've installed them in other peoples' planes, run them in other peoples' planes, and flown them in other poeples' planes. Other than that, I have no experience with Zenoah engines. I don't know anything about their metalurgy. I do know they run forever. I do know that they are heavy for the horsepower. I do know that they are reliable. But about the way they are made and why they suggest one kind of oil over another, if they do? I don't have a clue.
I have run Brisons'. I own Brisons'. I have installed Brisons' on other peoples' planes. I have flown Brisons' on other peoples planes. Due to my liking of Brison engines, I have taken the time to get to know a little bit, not all, but a little bit, about them. They are reliable. They are not terribly expensive. They run forever with a little care. They do not like heavy oil mixes. They will tell you all about it when you do it. They are relatively light. They have excellent power output for their size and weight. They run cooler than a few of the others. They have a great warranty. They are made in THIS country, not someone elses. They have good service. They are friendly people. They even answer their phones. I think that about covers it.
I'll only tell you what has worked, and continues to work well, with the engines I know something about.
Have a nice day[8D]
Pat Roy
Regarding Zenoah engines. I've installed them in other peoples' planes, run them in other peoples' planes, and flown them in other poeples' planes. Other than that, I have no experience with Zenoah engines. I don't know anything about their metalurgy. I do know they run forever. I do know that they are heavy for the horsepower. I do know that they are reliable. But about the way they are made and why they suggest one kind of oil over another, if they do? I don't have a clue.
I have run Brisons'. I own Brisons'. I have installed Brisons' on other peoples' planes. I have flown Brisons' on other peoples planes. Due to my liking of Brison engines, I have taken the time to get to know a little bit, not all, but a little bit, about them. They are reliable. They are not terribly expensive. They run forever with a little care. They do not like heavy oil mixes. They will tell you all about it when you do it. They are relatively light. They have excellent power output for their size and weight. They run cooler than a few of the others. They have a great warranty. They are made in THIS country, not someone elses. They have good service. They are friendly people. They even answer their phones. I think that about covers it.
I'll only tell you what has worked, and continues to work well, with the engines I know something about.
Have a nice day[8D]
Pat Roy
05-22-2004 | 04:57 AM
#28
Senior Member
My Feedback: (5)
Joined: Mar 2004
Posts: 1,848
Likes: 0
Received 0 Likes
on
0 Posts
From: Halifax,
NS, CANADA
RE: HELP: Brison 3.2 Tuning
ORIGINAL: jatt5abdaa
How about my other question...
Why can't I kill the motor by closing the throttle all the way ?
I have tried this mechanically also. I have adjusted the screw for the low speed too and even taken it out all the way.
TIA.
How about my other question...
Why can't I kill the motor by closing the throttle all the way ?
I have tried this mechanically also. I have adjusted the screw for the low speed too and even taken it out all the way.
TIA.
I don't know what your 3.2 is like but my 2.4 has a hole in the butterfly that will not allow me to kill the engine. I was tempted to solder this hole over but I opted for a optic fiber kill switch from Electrodynamics, works great. Also for what it is worth I was having all kinds of problems with my 2.4 starting and running right. I sent it twice to Brison (at great costs to me) and they couldn't fix it, in desperation I sent the engine to C & H and they "laughed" at the gap between the sensor and magnet, put one of theirs on and it runs perfect. I have about 150 flights on this engine, out of pocket expense for repairs & upgrades are in the $400.00 range, the frustration is priceless, I got very little help from Brison and will never buy another, sorry but I must VENT on this subject whenever I can.
05-22-2004 | 08:28 AM
#29
Senior Member
My Feedback: (16)
Joined: Apr 2002
Posts: 12,942
Likes: 0
Received 0 Likes
on
0 Posts
From: Locust Grove,
GA
RE: HELP: Brison 3.2 Tuning
I could not have said it better.
I have owned two Zenoah's, one Sachs, and 3 Brisons.
I prefer the Brison!
I have owned two Zenoah's, one Sachs, and 3 Brisons.
I prefer the Brison!
ORIGINAL: Silversurfer
Thank you, Bas.
Regarding Zenoah engines. I've installed them in other peoples' planes, run them in other peoples' planes, and flown them in other poeples' planes. Other than that, I have no experience with Zenoah engines. I don't know anything about their metalurgy. I do know they run forever. I do know that they are heavy for the horsepower. I do know that they are reliable. But about the way they are made and why they suggest one kind of oil over another, if they do? I don't have a clue.
I have run Brisons'. I own Brisons'. I have installed Brisons' on other peoples' planes. I have flown Brisons' on other peoples planes. Due to my liking of Brison engines, I have taken the time to get to know a little bit, not all, but a little bit, about them. They are reliable. They are not terribly expensive. They run forever with a little care. They do not like heavy oil mixes. They will tell you all about it when you do it. They are relatively light. They have excellent power output for their size and weight. They run cooler than a few of the others. They have a great warranty. They are made in THIS country, not someone elses. They have good service. They are friendly people. They even answer their phones. I think that about covers it.
I'll only tell you what has worked, and continues to work well, with the engines I know something about.
Have a nice day[8D]
Pat Roy
Thank you, Bas.
Regarding Zenoah engines. I've installed them in other peoples' planes, run them in other peoples' planes, and flown them in other poeples' planes. Other than that, I have no experience with Zenoah engines. I don't know anything about their metalurgy. I do know they run forever. I do know that they are heavy for the horsepower. I do know that they are reliable. But about the way they are made and why they suggest one kind of oil over another, if they do? I don't have a clue.
I have run Brisons'. I own Brisons'. I have installed Brisons' on other peoples' planes. I have flown Brisons' on other peoples planes. Due to my liking of Brison engines, I have taken the time to get to know a little bit, not all, but a little bit, about them. They are reliable. They are not terribly expensive. They run forever with a little care. They do not like heavy oil mixes. They will tell you all about it when you do it. They are relatively light. They have excellent power output for their size and weight. They run cooler than a few of the others. They have a great warranty. They are made in THIS country, not someone elses. They have good service. They are friendly people. They even answer their phones. I think that about covers it.
I'll only tell you what has worked, and continues to work well, with the engines I know something about.
Have a nice day[8D]
Pat Roy
05-23-2004 | 02:55 PM
#30
Thread Starter
My Feedback: (54)
Joined: Jan 2002
Posts: 579
Likes: 0
Received 0 Likes
on
0 Posts
From: Windermere,
FL
RE: HELP: Brison 3.2 Tuning
UPDATE
OK guys...I followed the suggestions by some of you and here are the results:
1. OIL. I discarded my old fuel and went all synthetic Amsoil at 1:80 ratio (Amsoil recommends anywhere from 1:80 to 1:100), Brison's recommendation is 1:80.
Results are splendid. My LS needle is at 1 3/4 & HS 1 turn. Engine runs perfect, transition is great.
2. Throttle cut-off. I had to remove the idle stop screw from the carb. There are 2 screws to adjust idle. One is the spring loaded screw to adjust the low end idle and the other is the actual throttle stop which is on the carb. I removed both. Result is a reliable idle at 1500 RPM and I can kill the engine from my throttle trim.
Thanks all for your help.
OK guys...I followed the suggestions by some of you and here are the results:
1. OIL. I discarded my old fuel and went all synthetic Amsoil at 1:80 ratio (Amsoil recommends anywhere from 1:80 to 1:100), Brison's recommendation is 1:80.
Results are splendid. My LS needle is at 1 3/4 & HS 1 turn. Engine runs perfect, transition is great.
2. Throttle cut-off. I had to remove the idle stop screw from the carb. There are 2 screws to adjust idle. One is the spring loaded screw to adjust the low end idle and the other is the actual throttle stop which is on the carb. I removed both. Result is a reliable idle at 1500 RPM and I can kill the engine from my throttle trim.
Thanks all for your help.
That's great news jatt ! It also reassures me that the Amsoil 80:1 mix that I have been using, is correct.
05-23-2004 | 05:09 PM
#32
Senior Member
Joined: Aug 2003
Posts: 175
Likes: 0
Received 0 Likes
on
0 Posts
From: Geneseo,
NY
RE: HELP: Brison 3.2 Tuning
Great! I am glad to hear that the oil was your problem with the engine running poorly. I have never done this with my Brison, but after seeing how it affects my weed wacker and chain saw, I was pretty sure that was your problem.
05-27-2004 | 05:00 AM
#34
My Feedback: (28)
Joined: Dec 2001
Posts: 1,488
Likes: 0
Received 0 Likes
on
0 Posts
From: Altoona,
IA
RE: HELP: Brison 3.2 Tuning
Silversurfer, you seem to be pretty knowledgable on the Brisons , i have a new fox 3.2 very similar to the Brisons, however i think i prefer the Brisons, anyway i am having the midrange burbles and engine running ruff at mid throttle also , and i am running Lawnboy 40/1 , i think after looking at my plug after 1 gallon of fuel i am going back to the sythetic Amsoil 2000 mixed at 64/1 . My plug was black with some carbon build up on it, so i think my mixture was to rich. Although i ran my Brison 3.2 yesterday to which is new and it ran fine on the lawnboy mixture with no midrange cutting out and running ruff. It has me stumped right now. Hopefully i can get it solved today.
05-27-2004 | 08:37 AM
#36
My Feedback: (28)
Joined: Dec 2001
Posts: 1,488
Likes: 0
Received 0 Likes
on
0 Posts
From: Altoona,
IA
RE: HELP: Brison 3.2 Tuning
I mixed the AMsoil 2000 racing series per Brisons recommendation and now it runs great anyway on the ground , will fly this afternoon but midrange now is like it should be. I tweaked the low end to where it was a little lean and had difficultity restarting after motor was warm then opened low end up a 1/16th seems to be fine now.
05-27-2004 | 09:22 PM
#37
My Feedback: (28)
Joined: Dec 2001
Posts: 1,488
Likes: 0
Received 0 Likes
on
0 Posts
From: Altoona,
IA
RE: HELP: Brison 3.2 Tuning
Flew the Suk today with the Amsoil mix 2000 racing series at 64/1 , all i can say is WOW what a difference . Motor of course is breaking in a little now but the midrange is much better with no excessive burble and stuttering. I switch also to a NX 22/8 prop and it really sings the 3.2 I am happy now just thought i would voice my opinion.
