new saws coming out

[Stubby]

A replacement for the 3120xp is interesting. Hopefully it will be a wee bit lighter. I think the 395 and 3120 are abit dated now. Still brilliant saws but need a new design that's less chunky and cumbersome.

 

Do you think it will be a bigger version of 372/385/390 construction or a bigger 576 type with A/T/ ?

[Valtra1982]

I'm sure what way husky will go design wise tobe honest. But they do seem to be going for the 550/60/ 76 design. the 555 is a good example of that.

372 etc has been round for a good few years now and they could be next to be discontinued and replaced. 357 went as soon as the 560 arrived. I thought when 576 arrive 372 would be gone.

 

A 595/5120 wouldn't be a bad design. In my opinion has the auto tune definitely improved the rev band.

Edited March 11, 2014 by Valtra1982

[Valtra1982]

In my opinion auto tune has improved the rev band. (Bloody iPhone)

[Stubby]

In my opinion auto tune has improved the rev band. (Bloody iPhone)

 

I agree .

[hedgesparrow]

Just some info on pricing wise a new complete carb for the 550xp is only a couple of pounds more than a carb for say the 346xp.

 

The problem is though the electronics in the carb arent available separately, so, if that part did screw up it would unfortunately be a whole new carb. All the other carb parts are available though.

 

Only a bit of a guess as I havent had to work on any faulty saws with autotune carbs but im guessing that any running problem straight away is blamed on the electrictrickery.

 

so as i said that the chip was part of the carb so new carb. and interested if he saw was running with a carb and a new carb was fitted. would the saw have problems because the new carb was slightly autotuned differently so engine wil struggle to compensate for the difference. seen it on race engines. and took some time to get new carbs to dial in to engine. i may think it could be said for saws. maybe the old school saws may have found there neice now and the big boys may loose out to the old school saws still being made.

[Stubby]

so as i said that the chip was part of the carb so new carb. and interested if he saw was running with a carb and a new carb was fitted. would the saw have problems because the new carb was slightly autotuned differently so engine wil struggle to compensate for the difference. seen it on race engines. and took some time to get new carbs to dial in to engine. i may think it could be said for saws. maybe the old school saws may have found there neice now and the big boys may loose out to the old school saws still being made.

 

Yea but old school saws have to have new carbs as well . MS 200 for a start . The carbs wont be " auto tuned differently " they tune themselves to suit the engine not the other way round .

[Mark_Skyland]

so as i said that the chip was part of the carb so new carb. and interested if he saw was running with a carb and a new carb was fitted. would the saw have problems because the new carb was slightly autotuned differently so engine wil struggle to compensate for the difference. seen it on race engines. and took some time to get new carbs to dial in to engine. i may think it could be said for saws. maybe the old school saws may have found there neice now and the big boys may loose out to the old school saws still being made.

 

As Stubby said the carb is tuned to the engine.The carb would have default settings so you would just have to do a new saw auto tune setup, running it at WOT(wide open throttle) for 3-5 minutes under load. Explained better here:- The last bit on bold being the more important bit to the user.

 

 

 

AutoTuneTM module constantly communicates with the other four active components in the system. In order for AutoTuneTM module to decide if and when it should enter one of the three modes, it constantly analyses information from;

Throttle sensor

Ignition module

(Information to presenter:

Magnetic valve controls fuel into the carburettor AT ALL TIMES.

Temp sensor informs AutoTuneTM module about carburettor temperature, which is used by AutoTuneTM to find optimized settings)

 

Starting mode; When the user pulls the starter cord, the ignition module re-powers the AutoTuneTM unit and it enters starting mode.

Idling mode; When the user sets throttle position in idling, the throttle sensor immediately indicates idling and AutoTuneTM enters idling mode.

Tuning mode; To enter tuning mode, two conditions have to be fulfilled: the throttle sensor has to indicate full throttle at the same time as the ignition system indicates 8 000 – 12 000 rpm. In other words; full throttle and load.

 

(As an example: if throttle trigger indicates full throttle and rpm is lower than 8 000 rpm, AutoTuneTM will NOT enter tuning mode.)

 

 

AFAIK a new carb needs to have firmware installed by a dealer (or someone who has access to the autotune diagnostic module) I know, I know. Im off to hide at this point(remember I didnt design it, I just told you about it))

[Eddy_t]

I'm sure what way husky will go design wise tobe honest. But they do seem to be going for the 550/60/ 76 design. the 555 is a good example of that.

372 etc has been round for a good few years now and they could be next to be discontinued and replaced. 357 went as soon as the 560 arrived. I thought when 576 arrive 372 would be gone.

 

A 595/5120 wouldn't be a bad design. In my opinion has the auto tune definitely improved the rev band.

 

 

It's not just the autotune that has changed the saws though, it's the whole cylinder, crank stuffers and strato engine that has been incorporated in the set up. To meet emissions the saw will be x-torq, but the rest of the design should put a 5120 on par with an 880, power and torque wise, but faster!

 

And the 3120 is very dated now! 26+ years, with only a carb design change! Likewise the 394/5 design is almost as old, that's only had the transfers split into a double each side.

 

 

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[Valtra1982]

Our 3120 was bought brand new in 1990 or 91 and the estate paid £795 for it. 3120 isaround double that now.