Ok - I need your HONEST opinions

[Çh®i§tiªñ]

I am going to be purchasing a new mill for my Fioroni converted Kyosho. Of the following, I am looking for feedback as to realiability, tuneability and powerbands. As well as real world feedback as to its performance.

Choices are as follows:

Trinity Sirio .27 Pro Monster HorsePower 27XL

Trinity Sirio .27 Racer Monster Horsepower 27XL

RB Concept C5 Buggy

RB Concept "World S7 II"

Top T421B - 2.75 HP - 34,500 RPM - 8 Port Turbo

Top PT21P5 - 2.6 HP - 31,000 RPM's - 5 Port Standard

Please let me know your HONEST opinions.

 

[Çh®i§tiªñ]

Anyone? As it stands I think I'm going to go with the Pro Monster Horsepower 27XL by Trinity/Sirio

 

[GilBeQuick]

I'm glad you posted this thread, I was considering the exact same thing....

 

[Error401]

Out of that list I can only speak on the Trinity Sirio 27XL (the ones EP has).

Power: most I have seen out of any 26/27
RPM: 40K easy with the standard head.
Powerband: idle and wot, not much in between. Used the expo feature in the radio to try to correct it. Might have been the pipe we were using also.
Tuneabilty: easy to set, holds tune nicely throughout the tank.
Starting: Very easy.

The other mill that wasn't in the list is the Trinity Sirio Kanai III.

Power: Very very good for a .21 sized mill.
RPM: 40K easy, standard head also.
Powerband: very smooth and fairly linear, THS pipe.
Tuneabilty: Very mellow, holds tune throughout tank.
Starting: Ultra easy (OS 8 plug)


Hope that helps. I should have a new vid online soon that has footage of both mills in action. How come towers shows the racer version of the Sirio 27 as having a pull start? I thought race versions didn't have PS's. EP's Sirios do not have the PS (just for reference).

 

[HumboldtBlazer]

My experience with Sirio has been the same, except my engine was AAC, and turbo so the fit was way tight and compression was high and breaking in was a pain with my cheap starter box. I used a hairdryer to heat the block. Honestly a gallon later the SOB is still tight as a 13yr old. Other than that holds a tune and performs like no other engine I have ever owned.

 

[StrechM]

Originally posted by Çh®i§tiªñ
Anyone? As it stands I think I'm going to go with the Pro Monster Horsepower 27XL by Trinity/Sirio

That one gets my vote senior... s27pro.

 

[Çh®i§tiªñ]

Well from peeling around the LHS and asking some locals, it appears that the Sirio doesn't have a powerband to speak of. Its either ON or OFF like others have stated. However, if you want to rip up the earth, its the way to go.

I was hoping FlyingRazorback would jump in on this too as he has run most of the mills in question.

I think I have it narrowed down to the RB-C5, Top-T214B and the Sirio PRO 27XL.

 

[ImBroken]

From what I've been reading, you really can't go wrong with
the RB C5's. A proven powerhouse... Good luck..

 

[Çh®i§tiªñ]

FlyinRazorBack - you out there?

 

[zoeybadm]

Originally posted by Çh®i§tiªñ
I am going to be purchasing a new mill for my Fioroni converted Kyosho. Of the following, I am looking for feedback as to realiability, tuneability and powerbands. As well as real world feedback as to its performance.

Choices are as follows:

Trinity Sirio .27 Pro Monster HorsePower 27XL

Trinity Sirio .27 Racer Monster Horsepower 27XL

RB Concept C5 Buggy

RB Concept "World S7 II"

Top T421B - 2.75 HP - 34,500 RPM - 8 Port Turbo

Top PT21P5 - 2.6 HP - 31,000 RPM's - 5 Port Standard

Please let me know your HONEST opinions.

I have a little driving time with the Trin. Sirio .27 racer monster and it is just that a monster....holds tune well but the mill is best suited for a larger outdoor racing as it will hand every engine in that list its booty without a doubt but the mid-range is lacking. IF you are looking for an all around engine the Top T421B has the smoothest power band and still has that earth ripping quality to it. I would give the nod to the Top T421 over the 27XL unless of course you want to rip apart the earth...

 

[Çh®i§tiªñ]

Great input, much appreciated.

Any input on the 'Turbo' button? I'm being told they are slightly harder to tune. If in fact I go with that choice, it will be my FIRST experience with a turbo button head.

 

[zoeybadm]

Originally posted by Çh®i§tiªñ
Great input, much appreciated.

Any input on the 'Turbo' button? I'm being told they are slightly harder to tune. If in fact I go with that choice, it will be my FIRST experience with a turbo button head.

I have heard that as well but my personal experience says that is not the case....it needs just as much day to day adjust as non-turbo head. I must qualify my opinion though....I honestly do not have that much experience with turbo button head. I just helped other people who seemed to be having trouble tuning the mill but I think the trouble was that the person in question did not have that much tuning experience and the mill was not too blame.

 

[Error401]

The Sirios come with both head buttons. I think the standard is factory installed, the turbo is in the box but isn't installed.

 

[zoeybadm]

Originally posted by Error401
The Sirios come with both head buttons. I think the standard is factory installed, the turbo is in the box but isn't installed.

Yeah on the Sirio the standard is installed....

 

[GilBeQuick]

I don't think turbo engines are harder to tune. IMO they're the same as any engine to tune, plus you get the added bonus of a couple thousand more RPM's.
IMO the biggest (and only) downside is the price of turbo plugs.

 

[ZANDOR]

squating here but what about the rb c5 buggy mill thoughts on this....lookin for a trade off for my hyp 7 pcr...

 

[Diver6127]

Originally posted by zandor22
squating here but what about the rb c5 buggy mill thoughts on this....lookin for a trade off for my hyp 7 pcr...

Zandor, you on the laptop while sitting on the throne?:constipat

 

[ZANDOR]

lol :constipat no but that was funny

 

[FlyinRazorback]

Sorry, must have missed this thread earlier.

First off, I have no experience with anything larger than a .21. I have seen some .26's / .27's run but that's it. I've had bad experiences with Sirio's, they seem to be hit or miss. If you get a good one they are one of the best engines you will find. If you get a bad one expect 3 minute run times and then a flame out for no apparent reason. I wouldn't be afraid of trying a turbo plug though.

The 421b is a new engine and little is known about it as of yet. I was very close to getting one but backed off at the last minute and got a P5. Early report is they were designed for euro style tracks and are more of a top-end engine, but that's mainly hearsay. I haven't ran one nor seen one run.

I've had a few P5's and I really like the engine, probably my favorite of them all. My suggestion, get a P5 and send it to Ed at EBMods, you won't regret it. That's what I'm running now and it's pretty tough. I only have a gallon through it so far and it is the fastest engine I have ran. Little pickier to tune compared to the standard P5 but not impossible to tune. Nova engines overall are pretty reliable and you should expect to get around 5 gallons through it before a rebuild.

The RB's are nice and powerfull, but you will have to play with tuning the clutch and pipe to get the most out of them. Especially with the C5 if you are trying to get some bottom end out of it. It is ballistic from mid to top though. The WS7II is a good engine from top to bottom. A little work with the clutch helps this engine alot also. RB's will run forever on a piston and sleeve, change the rod about every 2-3 gallons.

All of the engines you named are pricey, so let me throw a couple of other engines out here for you to consider.

Medial Pro M2K (Nova based).....It is another high end engine which is modified by JP. A little stronger than the WS7II on bottom and top. Pretty easy to tune, should be able to get 5-6 gals through it before rebuild. Plus, the craftsmanship and mod job on this engine are amazing.

JP FX series......A new engine coming out this month. I would expect it to be another high end engine. Anything with JP's initials attached are top notch in quality.

Of the engines mentioned, especially the WS7, M2K, and P5, go with an 86 or OS 2050 pipe. They are the best 2 pipes for these engines.

 

[Çh®i§tiªñ]

YOU are the man! Thats exactly what the doctor was lookin for.

So is the JP what you run now? Sounds like it is. Ill have to do a little research there. But sounds great none-the-less.

I was told the same thing at the LHS about the Top. Nobody around here has run one yet. The weather is still poop, so I doubt Ill find anyone local to see it go until after I get a mill. Then again, If I just wait 30 days, maybe even someone on here will have one by then.

Keep me posted if you see either the new JP or Top in action.

Until then, I may just hold off.

Thanks again for the input.