Author Topic: Dolmar 500V 4 stroke  (Read 3082 times)

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Offline Cut4fun

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Dolmar 500V 4 stroke
« on: April 23, 2014, 01:43:28 pm »
Just saving pics of the 4 stroke chainsaw dolmar 500 tested out about 10 years ago.  Noticed pics are disappearing now days.

removed 7 pics being hijacked by greedy PB. Sorry.

Added 3 embed pics below. Must be signed in to see.
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Offline 660magnum

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Re: Dolmar 500V 4 stroke
« Reply #1 on: April 23, 2014, 02:00:52 pm »
I bet there wouldn't be any specific parts for that device this side of the moon?

Appears to have some Solo influence in the design?
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Offline KilliansRedLeo

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Re: Dolmar 500V 4 stroke
« Reply #2 on: April 23, 2014, 02:06:31 pm »
Yeah but it sure would make a GREAT SHELF QUEEN! I want one just like the one in the pictures. I assume that it was around 50cc. What did the 'V' stand for in the name, surely not a 50cc 'V' twin!
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Offline Cut4fun .

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Re: Dolmar 500V 4 stroke
« Reply #3 on: April 23, 2014, 02:22:51 pm »
Found it in Dolmar history line.

2000
DOLMAR takes the wraps off the prototype of the world’s first 4-stroke chainsaw. The company launches a new range of professional chainsaws with an unrivalled power-to-weight ratio of 1.37 kg/kW. DOLMAR introduces the highly efficient Airmaster air filter system for its new professional chainsaws.

http://www.dolmar.com/company/history/
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Offline Cut4fun .

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Re: Dolmar 500V 4 stroke
« Reply #4 on: April 23, 2014, 02:28:39 pm »
Just digging up info.

Hope this works where you can read on it.   Click to make bigger then click on it again when magnifying glass shows up and you then can read it clearly.
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Offline RoyM

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Re: Dolmar 500V 4 stroke
« Reply #5 on: April 23, 2014, 10:53:09 pm »
I heard about it, Shindaiwa also had a prototype. Apparently the torque is something to behold but the world isn't ready for it. The Naderites haven't forced it on us...YET being the operative word. I talked to a Shinny rep, he tried an 80cc version in Japan with a 24" bar and full comp chain. Said it was unbelievable.
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Offline 3000 FPS

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Re: Dolmar 500V 4 stroke
« Reply #6 on: April 23, 2014, 11:34:10 pm »
The design and materials sounds expensive.   
I am impressed that the saw is capable of 12,500 rpm's.   That is a lot for a 4 stroke engine.
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Offline SawTroll

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Re: Dolmar 500V 4 stroke
« Reply #7 on: April 24, 2014, 01:50:39 am »
The design and materials sounds expensive.   
I am impressed that the saw is capable of 12,500 rpm's.   That is a lot for a 4 stroke engine.

Sort of - but power specs was low and weigth very high for a 50cc chainsaw. Rather hopeless effort really.  ::)
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Offline 3000 FPS

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Re: Dolmar 500V 4 stroke
« Reply #8 on: April 24, 2014, 09:50:57 am »
The design and materials sounds expensive.   
I am impressed that the saw is capable of 12,500 rpm's.   That is a lot for a 4 stroke engine.

Sort of - but power specs was low and weigth very high for a 50cc chainsaw. Rather hopeless effort really.  ::)

I agree but I am surprised they did as well as they did.

I wonder what the compression ratio was I did not see that.    Could be one reason why power was down.
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Offline RoyM

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Re: Dolmar 500V 4 stroke
« Reply #9 on: April 24, 2014, 10:08:14 am »
The design and materials sounds expensive.   
I am impressed that the saw is capable of 12,500 rpm's.   That is a lot for a 4 stroke engine.

Sort of - but power specs was low and weigth very high for a 50cc chainsaw. Rather hopeless effort really.  ::)
It may be forced on us whether we like it or not. Yes the horsepower is low compared to a two stroke but what we have here is pure torque. The 2 stroke has to be screaming to produce, once speed drops off it dies. A 4 stroke will keep pulling, that 50cc will likely run 3/8 chain quite happily. Still, I am going to keep my 2 stroke as long as possible, I like the simplicity and light weight.
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