XPG front handle bar, what's inside.....

[Tor R]

I thought I should make a topic about this, and what options we have when it goes to heathed handle bar, this goes for old saws but pretty much for newer saws as well.
Most people crave for XPG's, but in general they are not so easy to find, 242xpg and 262 xpg are almost super rare nowadays.

242,254,262 share the same generator, but 242 have a space ring.
242,254,262 share the same rear heathed elements, 262 have a tad longer space between those two elements.
254 and 262 share the same flywheel.
242,254,262, all three of them have their own unique front handle bar.

But, inside those front heathed handle bar we find the same heat element, actually, it's the same element used on 362xpg as well, and I would not be surprise if it's the same element on 346XPG,357XPG,372XPG.

To summarize, if you get hold of a bent XPG handles you can actually use it for something positive ...

254SG, 262XPG,362XPG


362xpg - 03


254SG - 87:

 

[Landmark]

I have always wondered. Now show us how to rewrap them and I will be really impressed. ha

 

[Sty57]

Tor I wonder if you could use some Copper Conductive Foil tape and make an new heating element?

 

[Tor R]

I have always wondered. Now show us how to rewrap them and I will be really impressed. ha

hehe if it was just as easy to rewrap them as it was to split them open.....

Tor I wonder if you could use some Copper Conductive Foil tape and make an new heating element?

I am no eletrican so I am clueless. I thought to bring one of them down to one eletrican engineer I know and let him look over them, just have to write down everything he need to calculate out.
I'll size up the heat element tomorrow, I am pretty sure we will figure out something, would be cool if we could build our own G handle bars.

 

[Magic_Man]

He will need the voltage, possibly amperage, and amount of watts. Then he can tell you wire gauge and length.

 

[Tor R]

This is only from 242 WS Manual, but I think that one who is most precise.
Generator: 20 voltage on 10k rpm, 0.9-1.3 ohm
heathed front handle bar: 3.7-3.9 ohm
Heathed rear elements: 1.4-1.8 ohm

Nowadays Husky say 3-4 ohm for heathed front handle

 

[Agrarian]

This is only from 242 WS Manual, but I think that one who is most precise.
Generator: 20 voltage on 10k rpm, 0.9-1.3 ohm
heathed front handle bar: 3.7-3.9 ohm
Heathed rear elements: 1.4-1.8 ohm
Nowadays Husky say 3-4 ohm for heathed front handle

All of the heating elements are in series with the generator so the heating element total ohms is 3.8 + 1.6 = 5.4 ohms (using averages). If the voltage put out by the generator is 20V then the current is 20/5.4 = 3.7 amps. Knowing that, the wattage of the pair of rear heaters is (3.7A) * (3.7A) * 1.6 ohms = 21.9 watts. The wattage of the top handle is (3.7A) * (3.7A) * 3.8 ohms = 52 watts. This ignores the effect of the internal resistance of the generator but should be accurate if the generator is outputting 20V when the heater elements are on.

Sorry for all the math but I was an electronic engineer in a former lifetime.

BTW, the Workshop Manual 101885526 states the rear heater elements should be 0.7 - 2.5 ohms.

 

[Tor R]

All of the heating elements are in series with the generator so the heating element total ohms is 3.8 + 1.6 = 5.4 ohms (using averages). If the voltage put out by the generator is 20V then the current is 20/5.4 = 3.7 amps. Knowing that, the wattage of the pair of rear heaters is (3.7A) * (3.7A) * 1.6 ohms = 21.9 watts. The wattage of the top handle is (3.7A) * (3.7A) * 3.8 ohms = 52 watts.

that make sense Barry
20 years since I went school hehe

 

[Agrarian]

that make sense Barry
20 years since I went school hehe

35 years for me.

 

[Agrarian]

Makes you wonder how Husqvarna is able to slip the plastic top handle covering over those elements without disturbing them?

 

[Warped5]

All of the heating elements are in series with the generator so the heating element total ohms is 3.8 + 1.6 = 5.4 ohms (using averages). If the voltage put out by the generator is 20V then the current is 20/5.4 = 3.7 amps. Knowing that, the wattage of the pair of rear heaters is (3.7A) * (3.7A) * 1.6 ohms = 21.9 watts. The wattage of the top handle is (3.7A) * (3.7A) * 3.8 ohms = 52 watts. This ignores the effect of the internal resistance of the generator but should be accurate if the generator is outputting 20V when the heater elements are on.

Sorry for all the math but I was an electronic engineer in a former lifetime.

BTW, the Workshop Manual 101885526 states the rear heater elements should be 0.7 - 2.5 ohms.

Just the sort of answer I enjoy reading the most.

Thanks, Barry!

 

[cus_deluxe]

Just the sort of answer I enjoy reading the most.

Thanks, Barry!

you old guys think alike i guess

 

[Tor R]

BTW, the Workshop Manual 101885526 states the rear heater elements should be 0.7 - 2.5 ohms.

42, 42D, 242 WS manual is more stright on values, also the one who mention 20 V on 10k rpm.

Makes you wonder how Husqvarna is able to slip the plastic top handle covering over those elements without disturbing them?

off those 3, all of them was done so the heat elements had moved when they wrapped them.

Update: Heat element is ruffly 380×11 mm.

 

[Tor R]

Rear handle piece, same piece on 242,246,254,262,266,268,272,281,288,394 G saws.
Resistance is 0,7 -0,9 ohm on each side, depend a bit what Husky claim, most of my sets have been around 1,4 ohm on the set.
The spacer between them is where people should pay attention, according Husky this spacer is the same on most of the old Huskies, but that is not how it is in reality, spacer on 254 is 18,5mm, while spacer on 262 is 17,5mm.

Picture of the heat element and one without, shouldn't be so difficult to make those NLA heathers.

 

[Sty57]

@Tor R
Did you ever come up with an Heating element or the tubing for the handle?

 

[Tor R]

@Tor R
Did you ever come up with an Heating element or the tubing for the handle?

I did send one question to Husky for long time ago for tubing, if it was possible in the future to buy just the tubing. Unfortantly, those things take time.

Through my front handle testing I saw that Husky used the same heat element from 1986 or older and up to at least 2003.
My thought about it was to use bend 3xx xpg handles for 2xx projects, or the other way, if I can get tubing from Husky

 

[psuiewalsh]

I wondered if the tubing is a heat shrink type.

 

[Tor R]

I wondered if the tubing is a heat shrink type.

I dont know, but on 550 they either use shrink type or one with glue, or perhaps it's both shrink and glue.
545 it's just a simple tube.