brison 3.2 what prop
12-19-2005 | 07:32 PM
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From: PAGELAND, SC
brison 3.2 what prop
hello all, just wanting to hear from you guy's in the know i am installing the 52.5 cc brison in the new lanier yak and want to use a bolly wood prop. i would like like one that i can 3d with but also have some speed and put the engine in it's sweet rpm range. any suggestions?
12-19-2005 | 08:22 PM
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From: Riverton,
WY
RE: brison 3.2 what prop
20x10 or 22x8 for break-in, then change to what ever dia and pitch will correct what you did not like about the break-in prop.
P.S. break-in may be as much as 3-5 gallons of fuel. Not a couple of flights like an OS glow.
P.S. break-in may be as much as 3-5 gallons of fuel. Not a couple of flights like an OS glow.
12-20-2005 | 07:56 AM
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RE: brison 3.2 what prop
ORIGINAL: BAS
I agree i have great results with MSC 22/8. They pull like a stump.20/10 is to lite.
I agree i have great results with MSC 22/8. They pull like a stump.20/10 is to lite.
I'm not trying to argue this, not in the least. I am a bit curious since this is the first Brison I have owned as why would the 20/10 be too lite?
My tag, which was signed by Gary, showed 7240rpm on the MSC 20/10 and I get 7200 even on the MSC 22/8. I did not get a 20/10 since I like stump pulling power (translated to I want to go straight up RIGHT NOW
) and I felt the 10 pitch was gonna give me to much speed and take to long to start pulling.As I said, just curious. I'm just getting into bigger gas engines so I am trying to determine if chosing the right prop the way I used to for the glow engines still applies.
12-20-2005 | 08:52 AM
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From: Hammond,
IN
RE: brison 3.2 what prop
I like either a Menz-S 22x8 or Mejzlik 22x10 for my Brison 3.2 and CH Double Vision. On the ground the rpm is in the range of 7200-7400 - Mejzlik is on the high side, Menz on the low side. The Menz wood prop is better for 3D and torque rolling. But, the Mejzlik has a little more speed and pull in the verticals. This is on a draggy 19 lb biplane. Since your Yak has one wing and should be considerably lighter, prop selection will not be that critical for blistering performance.
Others have mentioned MSC props, they have a very thick root and don't rev up like other brands of the equivalent size. A 20x10 MSC might be enough load for the Brison, but a Menz or Mejzlik require more diameter and/or pitch.
Others have mentioned MSC props, they have a very thick root and don't rev up like other brands of the equivalent size. A 20x10 MSC might be enough load for the Brison, but a Menz or Mejzlik require more diameter and/or pitch.
12-20-2005 | 09:19 AM
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From: Locust Grove,
GA
RE: brison 3.2 what prop
I would use either a 21x8 or 22x8.
Just make sure you can't rip the propeller going verticle.
Other than that, full throttle should not be used! (unless you are racing)
Just make sure you can't rip the propeller going verticle.
Other than that, full throttle should not be used! (unless you are racing)
12-20-2005 | 09:32 AM
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RE: brison 3.2 what prop
I prefer the MSC 22-8 over any of the other props I have tried for the 3.2 on a 17-18 pound Extra. The Menz and Mejzlik 22-8 get "ripped" by the engine and neither provides the upline thrust or down line braking like the MSC does. I gave away my Mekzlik 22-10 after learning through experience that was not nearly as predictable through the rpm changes as the MSC 22-8, and that the MSC provided much, much better low speed airflow. At least I was able to maintain much better control authority at super low speeds than I was able to with anything else.
Agreed, the MSC 22-8 does not provide the higher rpm numbers of the others, but at the rpm levels it does produce (around 6,800 at S.L.) it appears to do so much more efficiently and effectively than the others I have noted. A 20-10 MSC will provide more rpm, but won't perrform as well, I assure you. The MSC 22-8 may be a lot of wood, but like some girls I've known it seems to have all the right parts in all the right places in the right amounts.
Pat
Agreed, the MSC 22-8 does not provide the higher rpm numbers of the others, but at the rpm levels it does produce (around 6,800 at S.L.) it appears to do so much more efficiently and effectively than the others I have noted. A 20-10 MSC will provide more rpm, but won't perrform as well, I assure you. The MSC 22-8 may be a lot of wood, but like some girls I've known it seems to have all the right parts in all the right places in the right amounts.
Pat
12-20-2005 | 12:43 PM
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From: Altoona,
IA
RE: brison 3.2 what prop
I agree with silversurfer , he got me to try the MSC props and i havent used any other since then. The 20/10 msc might be ok to since they are more wood but i would stick with the 22/8
12-20-2005 | 12:49 PM
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From: Ponoka, AB,
RE: brison 3.2 what prop
I use a Menz 22x10 or a Bambula 22x8 at 6800 rpm for great performance on my 17lb Sig Sukhoi.
The Bambula pulls the Sukhoi to unl;imited vertical very well.
The Menz also gives unlimited vertical, just not as well.
Merry Christmas
John
The Bambula pulls the Sukhoi to unl;imited vertical very well.
The Menz also gives unlimited vertical, just not as well.
Merry Christmas
John
12-20-2005 | 06:26 PM
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From: PAGELAND, SC
RE: brison 3.2 what prop
what is an msc prop? where can i get one? i am kind of new and have used bolly props on my big super tigre but it doesn't semm like anyone mention's them. what gives are they no good?
12-20-2005 | 06:46 PM
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RE: brison 3.2 what prop
ORIGINAL: STEVESRCWORLD
what is an msc prop? where can i get one? i am kind of new and have used bolly props on my big super tigre but it doesn't semm like anyone mention's them. what gives are they no good?
what is an msc prop? where can i get one? i am kind of new and have used bolly props on my big super tigre but it doesn't semm like anyone mention's them. what gives are they no good?
I get mine from http://www.rcshowcase.com
12-23-2005 | 07:21 AM
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From: henderson,
TX
RE: brison 3.2 what prop
I agree with Silversurfer, but let' start at the beginning. This engine likes to breathe, & Gary at Brison reccomends running this engine at 7200-7700 rpm. So, in my opinion, that's where it needs to be broken in. I broke mine witha NX 21-8 at 7350 rpm,& after 2 gal of fuel it was turning 7700 rpm. I then switched to a 3W 22-8[ it actually measures 21 1/2"] at 7250,& after 2 more gal it was at 7680. Now it was time for the MSC 22-8 at 6950. It also turns a BME 22-8 at 7070 rpm. Once you get an engine broken in properly, you can load it up a little with a meaty prop like the MSC & it will really perform for you. Just my .02.
There's not another 50cc engine in my area that will run with my 3.2, & nobody can beleive that the 3.2 is that strong.. but the tach doesn't lie.. & the performance in the air speaks for itself.
There's not another 50cc engine in my area that will run with my 3.2, & nobody can beleive that the 3.2 is that strong.. but the tach doesn't lie.. & the performance in the air speaks for itself.
ORIGINAL: Silversurfer
I prefer the MSC 22-8 over any of the other props I have tried for the 3.2 on a 17-18 pound Extra. The Menz and Mejzlik 22-8 get "ripped" by the engine and neither provides the upline thrust or down line braking like the MSC does. I gave away my Mekzlik 22-10 after learning through experience that was not nearly as predictable through the rpm changes as the MSC 22-8, and that the MSC provided much, much better low speed airflow. At least I was able to maintain much better control authority at super low speeds than I was able to with anything else.
Agreed, the MSC 22-8 does not provide the higher rpm numbers of the others, but at the rpm levels it does produce (around 6,800 at S.L.) it appears to do so much more efficiently and effectively than the others I have noted. A 20-10 MSC will provide more rpm, but won't perrform as well, I assure you. The MSC 22-8 may be a lot of wood, but like some girls I've known it seems to have all the right parts in all the right places in the right amounts.
Pat
I prefer the MSC 22-8 over any of the other props I have tried for the 3.2 on a 17-18 pound Extra. The Menz and Mejzlik 22-8 get "ripped" by the engine and neither provides the upline thrust or down line braking like the MSC does. I gave away my Mekzlik 22-10 after learning through experience that was not nearly as predictable through the rpm changes as the MSC 22-8, and that the MSC provided much, much better low speed airflow. At least I was able to maintain much better control authority at super low speeds than I was able to with anything else.
Agreed, the MSC 22-8 does not provide the higher rpm numbers of the others, but at the rpm levels it does produce (around 6,800 at S.L.) it appears to do so much more efficiently and effectively than the others I have noted. A 20-10 MSC will provide more rpm, but won't perrform as well, I assure you. The MSC 22-8 may be a lot of wood, but like some girls I've known it seems to have all the right parts in all the right places in the right amounts.
Pat
