hi guys
need ur biased thoughts on power and user friendiness--- cost aside
thz

Hmm...

[link=http://www.rcuniverse.com/forum/m_6283437/tm.htm]CLICK HERE[/link]

but there was no peak65 in "click here"
thx

i just need to stir the pot a little,just read the click hear thread.never had a B60 but got a 58gx2 it spins a Biela 24-8 on a ES pipe at 7340.and that is new out of box and not tuneing the header length or the carb it was at factory settings. don't know how long the 58 will last but it's a screamer for now.the B60 is a time proven engine design it will last a long time,but i don't think it can keep up with the 58 at lease the numbers that i have seen. i can't spin a 23-8 on the 58 because it would put it outside the recomended rpms of 7500.
ENJOY!

Oh boy--here we go again--nothing against you 3DDINO but you wont get any useful info out of a thread like this---it will soon turn into a bash fest like they all do.

Try starting a thread on each engine separately--this way the urge to bash wont be as bad and hopefully you will get feedback from the actual owners of the engine. Then you can compare the results yourself.

Closetguy got his MVVS 58 for $400....if you can get that, then go for it. Otherwise, read the click it thread. There is no Peak65 because it don't come up....

(And Closetguy your spinning a large prop because you have a PIPE.... Its an expensive engine on the heavier side of the 50-60cc class, add the pipe, and its even more money and more weight.)

3DDino, you need to specify you airframe and style of flying because its an important consideration on an engine choice....

3D-coholic put that 24x8 Mejzlik on your B60 and tell us what it can do. Surely you put enough time on the engine now to have it broken in fully. You will definitely LOVE the increase in thrust with the larger prop, and with all that extra air flowing over your control surfaces

3DDIno remember the pipe moves the CG aft, in case nose weight is an issue.

No contest. MVVS or the Brillelli.

You said cost aside so I will just approach the power standpoint. The MVVS/Evolution 58 on a pipe will beat my 60. Thier claim of over 8hp is BS. But they state it will turn a Mejzlik 24x10 at 6900 on a pipe. That calculates to 6.94hp on Pe Reviers calculator. A far cry form the 8.5hp claimed at 6950, but still higher than my 60. If the MVVS is not on a pipe, I do not know. Those engines seem to suffer quite a bit without a pipe. But from a brute torq standpoint, the MVVS will win. The 60 hits its power band at a higher RPM so a 23" prop is far better for it. It is capable of well over 10K rpm without any damage.

Yes thats what it boils down.
And, I'm not sure how you set cost aside, but if you can, buy them both!

3ddino, this should be a easy choice for you your in Malaysia,the mvvs would be cheaper for you to buy wouldn't it? even on a pitts muffler i think the 58 is still stronger.there are reports of of 6800 on a 24-10 on a BCM side mount pitts.but you still haven't said what air frame your using. i would like to compare both with pitts muffler and same prop to see what shakes out.
if i would not have stumbled on the 58 for 400.00 i would have got the B60.if i would have put the DA 50 that i got on the shelf in the EF yak i would have been at 16-1/2 lbs. but i think i would need nose weigh to balance.so you do need to consider what air frame you are using.
ENJOY, LIFE IS TO SHORT!

its for efyak88"
and they reported some impressive rpm with peak65 along with light weigh
and ease of use also
i think we havent been fair to peak65
wouldnt you like to know the truth
thz

You might be right, you might be wrong. Very little information on the peak65. It looks like its made to look like the 45cc motor that turned out to be a dud.

You might have better luck taking your money to Las Vegas and putting everything on black. If you double up, then you can buy one of the other engines and absolutely KNOW its going to work.

Both of those motors are proven on the EFYak88. Also I find the published weight for the Peak65 to be a little nebulious and unbelieveable despite the picture of it on the scale. Generally when I have found something to be too good to be true....it tends to be not true. How you can have a motor that has more cc's then both of these motors and it suddenly weighs less than both of these other motors. Well its either untrue or parts of the motor would have to be made out of aluminum foil.

i hope its another case of legendary "DL50" or "3mm TOC53"
cost $300 with free shipping as bonus
i agree with you --- too good to be true
thx

Why is it too good to be true ? Was the DL50 too good to be true? .. No, it turned out to be an incredible engine! I have the Peak 65, and the weight you see in this pic is accurate. It is 4 pounds, 12 ounces including engine, ignition and muffler (2150 grams). It makes serious power, ... 6.5hp. It starts incredibly easy and has great transition. What more can you ask from a $300 engine?

3d-aholic, ... you are mistaken my friend. There is quite a bit of information about this engine ... right here on RCU. Peakmodel simply calls this engine the Peak 65 for marketing reasons. The engine is really known as the GSi65 65cc engine. Some have mistakenly refferred to it as the CRRC Pro 65, which is wrong, as CRRC Pro is on record saying they don't produce this engine, but did have a hand in its early design, but are not affiliated with it in its production form. There are alt least 4 or 5 threads here on RCU under various names, ... all of them referring to the same engine. More people have this engine and I haven't heard of one yet that claims to have a problem with it. I let Ralph Cunningham of RC Ignitions tear mine down and inspect, then test run it .. and he was impressed.

bravo

Wow that many huh...thats truely a lot.

There are very few prop numbers but it seemed like 24x10 @6000 is what I saw, it that 6.5 HP?+ I don't know, I'd have to go check and I'm not going to. However, those numbers look lower or equivalent to the other two engines....so it would hardly be worth a weight penalty.

Also, that muffler would not work at any AMA field in the US....that sucker can't be anything but loud.
I'm sure its light though which is one of the reasons but can't be all the reasons why the weight comes out looking low.

3DDino, here is a video of the MVVS 58 flying a 19# 7oz plane: http://www.hiddenhangarrc.com/video/...esPrecious.wmv
That engine just might be overkill in a light plane like the EF Yak.