My home made humble saw mill

[alsayyed]

Hello fellows these are the photos of my humble saw mill. I almost finished building it the only problem I am facing know, if I start the engine without any load or the tires are not placed on  the shaft the engine run good. Once I place the tires I have difficulty starting the engine.  Some one told me to get a clutch but to be honest do not have any idea about clutch and where to connect the clutch. Could some one tell me why I am having hard start when the wheels I mean the tires?

Please pass me if you have any suggestion.


 

[Magicman]

IMO....You've got to have a way of starting the engine without  the blade engaged.  That will also allow you to stop the blade without killing the engine.

Back to the drawing board.  You could put the engine on a hinged tilt arrangement which would loosen the belt.  That's what WM and probably others do.  You could also have a movable idler pully and longer drive belt.  You have got to have a clutch.

[jim king]

I have to ask .  Are there trees where you are ?¿

There are many others that can answer your questions better than myself but I had to ask what you are going to saw ?

[Hilltop366]

Don't those bandmills usually have a large reduction from the engine to the driven pulley?  This one looks the reverse to me.

Looks like the engine is in a good location to have it slide to slack off the belt to stop the band wheels.

[Fla._Deadheader]

 Hilltop is correct. The pulleys need to be reversed.

  Also, if it was my mill, I would move the engine a LOT closer to the drive wheel, and then use the "Hinge" idea, as was suggested.

  That's what we did, and it works well. Here's a photo or 2.  You have to look close at what is moving. The handle is pushed toward the sawhead. It is a "Cam" type action, that raises the engine and then locks "Over center".  To release tension, just pull the handle toward you. The engine drops down.  NOT a lot of movement involved.

  You DEFINITELY need to disengage the engine, or, you may never get the alignment adjusted to keep the blade tracking on the wheels.

 

 

 You are doing a good job on building the mill, Alsayyed. 
 

[pineywoods]

Looks like a good start for a fine mill. Think you will need to swap the 2 pulleys, small one on the motor, large one on the bandwheel. That would help the starting problem, but you will need to build some kind of clutch, just some way to loosen the belt enough so that it will slip when not sawing.

[beenthere]

I have to ask .  Are there trees where you are ?¿
........

Joe
Go to alsayyed's gallery, and you can see what he is cutting. But yes, he has logs to cut. 

[jfl]

From memory (my mill is under snow right now), on the lumberlite, the clutch is installed directly on the motor shaft. In your example, you would have to remove the wheel on the motor shaft and replace it with a clutch-wheel.  When the motor is turning at high speed, the shaft and the wheel are engaged.  When the motor slow down, they are disengaged.  I don't know if Norwood will sell only the clutch (they should, as a spare part?), or if it will fit your motor shaft, but it does the job on the Lumberlite.

Otherwise, I think ski-doos also have similar clutch, but they use larger strap (I haven't used a ski-doo in the last 20 years, so my knowledge could be obsolete.)

jf

[scrout]

Qatar??  That is awesome!
I am diggin' your driveway shop, I think we had over an inch of rain here yesterday alone.
Make sure and put some video up when you make sawdust.

[Chris Burchfield]

alsayyed,
     Are those Mangrove trees you've been cutting? How close are you to the ocean?

[Ianab]

Just had a quick look on Google maps and zoomed in on Dohar. While it's certainly a desert area there is a surprising number of trees, orchards and even small areas that might be called forest. 

From memory I think Alsayyed gets logs from Acacia and various Ecalyptus species? Stuff that can handle the desert conditions anyway.

Ian

[DanG]

Good job Alsayyed!!   That's all I am going to say about the sawmill.  I want to say that Alsayyed is a real asset to this Forum!  Not only has he come from knowing nothing at all about processing wood to building his own bandmill, his command of the English language has improved at a remarkable rate.  His progress is nothing short of astounding!!

Alsayyed, I do not know how to say to you how much I appreciate your participation here.  I know that you have gained a lot from this Forum, but you have given much more than you have recieved, in ways that you can never understand.  I want you to know that you are a friend to us in every way that word can be thought of, and I would like to shake your hand someday.

[fishpharmer]

Alsayyed, your mill looks great.  You are almost there.  Here is a link to the clutch device folks mentioned.  It goes on the engine driveshaft and allows the engine to idle with no load.  Increased engine speed causes it to engage.

http://www.linnlumber.com/app/inventoryapp/sawmill_parts/inventory_view/68-0-73-1.html

Or another possibility is mount the engine on a sliding bracket.  Basically an engine mount welded on top of tube that slides over slightly smaller tube. 


Next shot is a closeup of slider thingy on idle side, like engine mount side.

Just weld your engine bracket on top of slider tube.  Make sure your hook your ground to the engine mount and not inner tube.  Or else, you could weld the tubes together.

Hope that helps some.  And like DanG said, I too hope to shake your hand some day.

[sdunston]

Looks like a great start to a good mill. I would agree with the others in that you need to change the pulleys(smaller on engine larger on axel). One idea would to use a centrifacal cluth on the engine and rig up a throtle lever our twist grip to control engine speed.If you know the wheel size you will be running maybe someone here could give you the rpm they need to run at to get the required blade feet per min. Also you could also run an electric clutch,the ones that they use on lawn tractors to control PTO, I know surplus center has all the good stuff you need. here is there link to the clutches https://www.surpluscenter.com/powerTrans.asp?UID=2108011705524664&catname=powerTrans
good job,
Sam

[thecfarm]

I have a centrifugal force like sdunston suggested.At idle nothing moves.When I rev up the motor the blade moves.On my mill a simple bike brake is used for the throttle.It's set up so when I squeeze the handle all the way,it's so called wide open.All the power that is needed to run the mill.I think there is more power there,but it's not needed to get the RPM I need.

[alsayyed]

To answer to your question look at these tree. This tree called pizza or pizzeria it is very heavy in weight and the rest are in the picture are Zizyphus Spina Christi  they are my favorite I made few  things with this type wood maybe I will post some photos tomorrow to see.

I am getting good information thank to everybody, DangD do not be surprise it is small world maybe we will shake the hand. I will start changing the pulley. I already received the blades from woodM.

I thank you all of you for your help very nice and very good


 

[Magicman]

I'd love to see pictures of the lumber after you strart sawing.  I'm not trying to rush you, I just like to see a log opened up.....

[scsmith42]

Good job Alsayyed!!   That's all I am going to say about the sawmill.  I want to say that Alsayyed is a real asset to this Forum!  Not only has he come from knowing nothing at all about processing wood to building his own bandmill, his command of the English language has improved at a remarkable rate.  His progress is nothing short of astounding!!

Alsayyed, I do not know how to say to you how much I appreciate your participation here.  I know that you have gained a lot from this Forum, but you have given much more than you have recieved, in ways that you can never understand.  I want you to know that you are a friend to us in every way that word can be thought of, and I would like to shake your hand someday.

+1, I couldn't agree more with DanG's comments.

Alsayyed, lots of good advice here from others.  Probably your "easiest" solution to the clutch problem is a centrifugal clutch.  Can't wait to see your mill in operation - keep up the great work!

Scott

[coastlogger]

Hello Alsayyed
You must I think do a speed calculation and get the right size pulleys. This is not rocket science.Research the blade feet per minute you need,convert that to rpms (by using cicumference of bandwheel).Now see how that compares to the rpms of your engine(3600) and buy pulleys that give you that same comparative ratio.To me, it does not look like you have the right pulleys even if you swap them.I think you will have way too fast a blade speed.
clgr

[fishpharmer]

Coastlogger, good advice.  Alsayyed is a lucky fella to have found Forestry Forum before starting his mill.  Here is a link to the calculators for the FF toolbox

http://www.forestryforum.com/members/donp/CalculatorIndex.htm