Dyno tested....Mastermind's ported 261cm vs Stock 261cm Gotta see this one.

[Dieselshawn]

Redfin: have not tried to actually create a dyno chart yet.

I have only the hp at 9,500 rpms which my buddies cut logs at. 7.5 hp. 4 ft/lb.

We actually only used the dyno a few days ago to verify consistency with another mastemind 660 to make sure the cylinder is still working after melting a piston.

I will try and make a dyno chart soon.

 

[Dieselshawn]

Here's the 5 gallon tank. No cooler needed yet. None of the big saws have been able to get the oil hot. Even after draining a full tank of gas or even 2.

 

[nk14zp]

I'd like you to put my Masterminded 394 (new recipe) on the dyno against my Husqvarna riding mower. I'm betting they both make about 22bhp

Does your wife run them both? Or just start them for you?

 

[HuskStihl]

Does your wife run them both? Or just start them for you?

The 394's tough, but the mower has a key!

 

[Duane(Pa)]

Redfin: have not tried to actually create a dyno chart yet.

I have only the hp at 9,500 rpms which my buddies cut logs at. 7.5 hp. 4 ft/lb.

We actually only used the dyno a few days ago to verify consistency with another mastemind 660 to make sure the cylinder is still working after melting a piston.

I will try and make a dyno chart soon.

Did it lean out or what?

 

[Mastermind]

It was damaged by a skidder, or a tree.......I can't remember which. Then after repairing it......it fried a piston.

Again, I can't remember if it was an air leak or what.

OK.......too many saws.

 

[Dieselshawn]

Duane: it did melt on the exhaust side which would indicate lean.

It was damaged by a tree, repaired by a shop and melted next day.

I took the saw, spent the weekend on it, checked everything for leaks, found nothing wrong with the case. Maybe disturbed seals as the crank was moved over too.

 

[Duane(Pa)]

^^^

 

[Mastermind]

Couldn't sleep Duane?

 

[KG441c]

That graph is giving him insomnia!!! Lol!

 

[Mastermind]

This graph compared to this other graph blows my mind.

Peak power falls off pretty fast in all the other saws.

 

[KG441c]

YA! ! I think u installed that top quality grove of DOLE bananas in that dang 261!!! Lol

 

[Mastermind]

Pure luck......

 

[KG441c]

Wow!! The 261 at 10000rpm made almost same hp as the ported 361!!! That would break Saw Trolls spirit on the 361??? Lol

 

[VinceGU05]

Can't wait to have mine stuffed with bananas!![emoji16]

 

[KG441c]

I hope he puts his extra spicy angry Monkey suit on when he puts one of his groves of Dole bananas in my 461 that will be dynoed!!! Heck I may tattoo the graph on my arm!!!! LMBO!!

 

[Mastermind]

I'm running behind on the 461........

I have this Alpina on the bench right now.........just staring at it. What a weird port arrangement.

 

[nmurph]

...just staring at it. What a weird port arrangement.

Pics??

 

[KG441c]

I'm running behind on the 461........

I have this Alpina on the bench right now.........just staring at it. What a weird port arrangement.

Hog it out and hope for the best!!! That always works dont it??? Lol

 

[Mastermind]

Pics??

Maybe.....

Hog it out and hope for the best!!! That always works dont it??? Lol

Some folks think it does.....