Denis Carrier wrote:
By the way, I bought the one before on eBay. I found it a bit small, not very good as far as the ergonomics are concerned (hands too close together so dangerous for kickbacks) and was surprised the find that the oil for the chain is taken from the gears enclosure. What kind of oil are you going to use (chain oil or sae 80 gear oil?)
Probably standard chain oil. If the gears share the oil system it would probably be better to keep the chain assembly happy.
I agree with you, we need a 36 Vdc chainsaw to work from an Elec-Trak. I tried before a Remington (110Vac) with a 3400 watt inverter. Not enough! For inductive loads (like an electric motor) I was told that we have to multiply by 6 the nominal wattage. As an exemple, a 12 Amp, 110 Vac chainsaw might be seen as a 1320 Watt machine (Volts x amps = watts) but this is not the case. I still would like to use a new 110Vac electric chainsaw with my E20 but I have to find a way to avoid its peek power requirement at start.
It is a bear of a problem. I would guess that the tripp-lite 3600 watt inverter *might* be enough to get the job done. I will say that a 3,000 watt APC Matrix UPS will do the job without a problem, however it's a 48 volt inverter so now you're dragging another 12 volts of batteries to put in series with the Elec-trak. Big big pain in the rear.
Technically the rotary inverter should not need that multiplication factor as it's a real spinning AC alternator. However when I use my very nice Craftsman electric it will pop that 8 amp breaker after a minute or two of cutting. Big pain in rear. I've thought about replacing the 8a klixon with a 10 amp breaker, but I really don't want to burn out the windings on my rotary and it seems to be a happy thing otherwise. Anyone know if you can "overclock" that thing a bit?
I see 3 possibilities : 1- Add condensers 2- Use a small flywheel progressivly accelereting the rotor (via a CVT?)3- Find an electric motor having a rotor with much less inertia and add a centrifugal clutch like those on IC engine chainsaws.Any suggestions?.
Another option would be to get a broken AC genset in the 2,000 watt range, junk the ICE motor, and hook it up to a nice big E15-E20 shunt motor. Then trim the field current to get a nice stable 120 and let it rip. One feature of the shunt wound motors is that if you set a specific speed, they will do anything to maintain their RPM. So they would be great for a genset.
If I don't like the chainsaw I'll re-sell it on Ebay then go this route. Big pain though...
Chris