The Forestry Forum is sponsored in part by:

iDRY Vacuum Kilns


Forestry Forum
Sponsored by:


TimberKing Sawmills



Toll Free 1-800-582-0470

LogRite Tools



Norwood Industries Inc.




Your source for Portable Sawmills, Edgers, Resaws, Sharpeners, Setters, Bandsaw Blades and Sawmill Parts

EZ Boardwalk Sawmills. More Saw For Less Money!

STIHLDealers.com sponsored by Northeast STIHL


Woodland Sawmills

Peterson Swingmills

 KASCO SharpTech WoodMaxx Blades

Turbosawmill

Sawmill Exchange

Michigan Firewood, your BRUTE FORCE Authorized Dealer

Baker Products

ECHO-Bearcat

iDRY Wood Lumber Vacuum Drying for everyon

Nyle Kiln Dry Systems

Chainsawr, The Worlds Largest Inventory of Chainsaw Parts

Smith Sawmill Service

Dynamic Green Products Inc.





Author Topic: 6.5hp gas engine, band size and speed ideas please  (Read 3899 times)

0 Members and 1 Guest are viewing this topic.

Offline fallenoak

  • member
  • *
  • Posts: 22
  • Age: 32
  • Location: Manchester, England
  • Gender: Male
  • I'm new!
    • Share Post
6.5hp gas engine, band size and speed ideas please
« on: December 16, 2014, 05:32:07 PM »
Hi Guys

just won a 2000w generator with a 6.5hp petrol engine in it for 33 on ebay. I know its not huge but yesterday i only had a 3hp engine to work with and now ive got another 3.5 horses locked in the shed.

any ideas on band speed (slowish im guessing) and band sizes?

Thanks

Sam

Offline beenthere

  • Senior Member x2
  • *****
  • Posts: 26932
  • Location: Southern Wisconsin, USA
  • Gender: Male
    • Share Post
Re: 6.5hp gas engine, band size and speed ideas please
« Reply #1 on: December 16, 2014, 05:38:39 PM »
Fallenoak
Might help to keep your bandmill build in one thread so your goal and the questions and answers tie themselves together. Just a suggestion for train of thoughts.  ;)
south central Wisconsin
 It may be that my sole purpose in life is simply to serve as a warning to others

Offline Herb Brooks

  • Full Member x2
  • ***
  • Posts: 104
  • Age: 58
  • Location: Lipan Tx
  • Gender: Male
    • Share Post
Re: 6.5hp gas engine, band size and speed ideas please
« Reply #2 on: December 16, 2014, 05:40:36 PM »
Hate to be a spoiler, but the generator engine probably has a tapered shaft.

Offline Mark W

  • member
  • *
  • Posts: 6
  • Age: 61
  • Location: Kent United Kingdom
  • Gender: Male
    • Share Post
Re: 6.5hp gas engine, band size and speed ideas please
« Reply #3 on: December 16, 2014, 06:52:28 PM »
Hi Fallenoak
I am down south of you it has taken me 8 weeks to get my build all sorted out, and I have not started building anything yet. As Herb has said the shaft might be tapered, are you planning on using a clutch ? IF i am correct I think the band speed should be around 55mph but someone should correct me if I am wrong.
If you know the rpm of the engine and the size of your band wheels you should be able to work it out as to what gearing you need. Man there are lots of things that you need to get sorted just take your time and put pen to paper and get a plan down that will work. I hope your build goes well and I will be following it closely.

Mark

Offline Herb Brooks

  • Full Member x2
  • ***
  • Posts: 104
  • Age: 58
  • Location: Lipan Tx
  • Gender: Male
    • Share Post
Re: 6.5hp gas engine, band size and speed ideas please
« Reply #4 on: December 16, 2014, 08:38:23 PM »
While riding my hour long commute I was considering the tapered shaft delema.  I believe the electric clutch from an older ford piston type a/c compressor is a York with a taper.  Further research my prove me wrong. But I will try.

Offline Herb Brooks

  • Full Member x2
  • ***
  • Posts: 104
  • Age: 58
  • Location: Lipan Tx
  • Gender: Male
    • Share Post
Re: 6.5hp gas engine, band size and speed ideas please
« Reply #5 on: December 16, 2014, 08:44:17 PM »
Check here. http://www.classicautoair.com/FORD_OEM_Compressor_Parts.html   Taper may be different but a call to them after you get your motor separated from the gen set and measured they should be able to tell you if the clutch will fit.

Offline fallenoak

  • member
  • *
  • Posts: 22
  • Age: 32
  • Location: Manchester, England
  • Gender: Male
  • I'm new!
    • Share Post
Re: 6.5hp gas engine, band size and speed ideas please
« Reply #6 on: December 17, 2014, 07:27:01 AM »
Thanks for the heads up Herb atleast i now know what options ive got.

1)track down a clutch that accepts a tapered shaft
2)buy or make a shaft adaptor
3) peak output for the genny is 2.4kw so maybe i could run a 2.5 or 3 hp electric motor and still have a working genny for all those other mobile power requirements that pop up
4)sell the genny hopefully for a profit and buy a more suitable engine

only after a hobby mill for now so im just looking for the ability to cut your average tree a bit quicker than my chainsaw mill will 61cc 20" bar

anyone have any other ideas?

mark i was planning on having it chain driven to minimise power loss which i think would require a clutch but maybe i could go with some kind of bellt drive and tension the belt with another pulley when i want to cut?

not sure im still in the very early stages of planning as you may have guessed

good luck with your build ill keep an eye on what your up to if your posting details?

Offline Mark W

  • member
  • *
  • Posts: 6
  • Age: 61
  • Location: Kent United Kingdom
  • Gender: Male
    • Share Post
Re: 6.5hp gas engine, band size and speed ideas please
« Reply #7 on: December 17, 2014, 09:26:56 AM »
I would be looking at a Noran clutch if I was you. If you Google Broardbent Drives their in Bradford, they have all the information you will need, not sure about the chain drive with all the dust !! I will be using a belt drive. they might have one for a tapered shaft.

Mark

Offline Verticaltrx

  • Full Member x2
  • ***
  • Posts: 180
  • Location: SW Virginia
    • Share Post
Re: 6.5hp gas engine, band size and speed ideas please
« Reply #8 on: December 18, 2014, 09:23:57 PM »
I have a small bandsaw mill made by Hudson (model HFE-21) that uses a 6.5hp engine. It works fine for a mill with a 21" log capacity. The mill uses 16" band wheels and a 132" blade. The driven pulley is the band wheel which is 16" diameter, and the motor uses a centrifugal clutch which has a fairly small 1.5-2" pulley, RPM on the motor is about 3500.

Hope some of this info will help in your calculations.
 
Wood-Mizer LT15G19

Offline fallenoak

  • member
  • *
  • Posts: 22
  • Age: 32
  • Location: Manchester, England
  • Gender: Male
  • I'm new!
    • Share Post
Re: 6.5hp gas engine, band size and speed ideas please
« Reply #9 on: December 31, 2014, 07:09:27 AM »
im thinking maybe canibalise the gen set as there is obviously a matching female taper on there and maybe just bolt the two together

or maybe weld a sprocket to the female taper from the gen set making sure its well supported to drive my bandwheels. then rig up the engine on a sliding mount so that the two tapers can be brought together or seperated as a kind of clutch.

i know this might not be an ideal solution but it would mean i dont have to buy a clutch

any thoughts

sam

Offline fallenoak

  • member
  • *
  • Posts: 22
  • Age: 32
  • Location: Manchester, England
  • Gender: Male
  • I'm new!
    • Share Post
Re: 6.5hp gas engine, band size and speed ideas please
« Reply #10 on: December 31, 2014, 07:18:55 AM »
verticaltrx are you sure on that drive pulley size or engine rpm??? as a 2" pulley driving a 16" at 3500 rpm would give a band speed of 1832 surface feet per minute.

at 3500rpm driving a 16" wheel
a 3" pulley would be 2748 SFPM
 a 4" 3663 SFPM
and a 5" 4579 SFPM

just wanted to confirm

sam

Offline Verticaltrx

  • Full Member x2
  • ***
  • Posts: 180
  • Location: SW Virginia
    • Share Post
Re: 6.5hp gas engine, band size and speed ideas please
« Reply #11 on: December 31, 2014, 01:58:26 PM »
Just looked in the manual, the pulley on the clutch is actually 2.5" dia, band wheel is 16" as stated and engine rpm is between 3500-3600rpm.

Hope this helps
Wood-Mizer LT15G19

Offline Joe Hillmann

  • Senior Member
  • ****
  • Posts: 813
  • Location: Cameron, WI
  • I'm new!
    • Share Post
Re: 6.5hp gas engine, band size and speed ideas please
« Reply #12 on: December 31, 2014, 02:20:07 PM »
Just looked in the manual, the pulley on the clutch is actually 2.5" dia, band wheel is 16" as stated and engine rpm is between 3500-3600rpm.

Hope this helps

Where does the belt ride on the band wheel?  Directly on the wheel? Or on a separate smaller pulley?


Share via delicious Share via digg Share via facebook Share via linkedin Share via pinterest Share via reddit Share via stumble Share via tumblr Share via twitter

question
ideas for an engine for a band sawmill

Started by stephen breen on Sawmills and Milling

29 Replies
16044 Views
Last post January 01, 2012, 03:24:23 PM
by Magicman
xx
Band Wheel Size VS Motor Size?

Started by skocienski on Sawmills and Milling

4 Replies
1162 Views
Last post March 07, 2012, 09:43:25 PM
by pyrocasto
xx
Speed of Saw vs size of cuttings...

Started by Woodhog on Chainsaws

5 Replies
1754 Views
Last post February 18, 2006, 02:13:43 PM
by Deadwood
xx
Engine Speed

Started by thiggy on Sawmills and Milling

7 Replies
2240 Views
Last post October 27, 2005, 09:59:33 PM
by macpower
 


Powered by EzPortal