Chainsaw Repair

Cool build. I'd like to see it run again.

Thanks guys.
Good to see you again chy_farm !  I like your cool twin pipe build on your Echo.
Which reminds me, I'm going to start a thread of this YZ rebuild on the Modified Ported Work or Race Saws section.

I fixed the lighting in my shop for better photos, funny how a old technology incandescent light bulb over my work bench can't be compatible with the camera on my Samsung phone
I got my motivation from Ken Steeves with his historical hot saw rebuilds. So I'm going to to take my time with this saw rebuild. Even though it's only historical for me

Amazing what you can do with the Internet today. I was finding brand new OEM  parts for my 1982 YZ125 J.
 I'm going to order lots of cylinder head O rings and base gaskets before their all gone.
Even found a set of 1982 YZ125J sand casted factory works race  cylinders . 

I plan on racing this saw again one day for the fun of it. Might not have the power of a big Rotax . But I will get it under 30 lbs with b/c included. Alot better then trying to cold start and steer a 60 lb plus Rotax.

For any of you guys who know who Ron Hartill is. He was 7 time World Lumberjack champ at Hayward Wisconsin in the 70's and 80's.
 I was in Ron's shop in the summer of 1988 after a competition. Ron was showing me his 135cc B-Bomb kart hot saw. A saw he was beating 250cc bikes saws in 20" wood in the States.
He liked my YZ engine alot and he said the left hand drive was definitely not a handicap. 
His advice was I have to make the Yamaha as compact as possible. He said the cold start and between cuts with a consistent reliable saw is the deciding moment when you win or lose. Drive sprocket gearing is very important.  Alot of guys run too big of a sprocket on their hotsaws for the type of wood their cutting.

He said it's not the most powerful  saw with unpredictably to cut at a show that wins.
It's the consistent reliable saw with a good operator who also knows how to put a good edge on his chain who has good luck.

>Good to see you again chy_farm !  I like your cool twin pipe build on your Echo.
>Which reminds me, I'm going to start a thread of this YZ rebuild on the Modified Ported Work or Race Saws section.

Thanks Holmen, it's very nice to know this, look forward to reading your new thread.
My twin Echo has a lead valve after her carb, and this lead is relatively a big one comprises of 4 big lobes, so this means she was made not for very high rev machine. Asked Echo on the highest rev spin, their reply was nearly 11000rpm for this twin. Shame I wanted to spin her over 13500,,,,Anyways I have to do something better for her port. Your coming thread will surely help me do this job!
Chy   

Very nice reading Holmen thanks, and yes you are right. I am watching this;
http://www.dragonfly75.com/moto/reeds.html

If I were able to fabricate a special carbon fiber plate that would be the best one for her!
Chy

I think you are mentioning a very good point Holmen, this stinger length and diameter are things I think most. Have been reading this graph here;



the original site is here;
http://www.dragonfly75.com/motorbike/stingersizing.html

Chy