Go Back   :::.Nissan 4x4 Owners Club.::: > General > The Clubs Virtual Pub

The Clubs Virtual Pub For general chat, so come on in and pull up a chair.

Reply
 
Thread Tools Display Modes
Old 10-09-2021, 23:14   #31
terranosaurusdoug
Senior Member
Click here to find out how to become a paid up member
 
Join Date: Sep 2014
Location: Yorkshire, J33 M62
Vehicle: 2000 Terrano lwb 2.7TDI
Posts: 5,456
Default

I've been watching with interest Rick
I saw this at the place I bought my new Terrano from and thought of you, is mounted on the back of an old Ford tractor.
20210910_230509.jpg
__________________
2000 Terrano II Lwb 2.7TDI

Everyday is a school day
terranosaurusdoug is offline   Reply With Quote
Old 10-09-2021, 23:20   #32
solarman216
Off road maniac
Click here to find out how to become a paid up member
 
solarman216's Avatar
 
Join Date: Dec 2009
Location: Bexhill on Sea
Vehicle: Y60 Patrol Me, 3 ltr Mrs
Posts: 16,701
Default

Looks good if you have a tractor, I do not, Rick
__________________
Ex banger racer now off road maniac
Lokka on the front with manual hubs
Diff lock on rear
3 inch SS straight through exhaust
Manly winch bumper with 13000 lb winch
10 spike ground anchor, with multiple straps and blocks
Super strong body cills capped with scaffold pole
20% stronger springs all round
aggressive off road tyres on wheels so just swap.
Aim to get stuck and be completely self sufficient in extraction, love getting muddy, 2ft deep is good but rare.
solarman216 is offline   Reply With Quote
Old 10-09-2021, 23:34   #33
terranosaurusdoug
Senior Member
Click here to find out how to become a paid up member
 
Join Date: Sep 2014
Location: Yorkshire, J33 M62
Vehicle: 2000 Terrano lwb 2.7TDI
Posts: 5,456
Default

It won't be anywhere near as fast either, the speed of yours is impressive.
__________________
2000 Terrano II Lwb 2.7TDI

Everyday is a school day
terranosaurusdoug is offline   Reply With Quote
Old 11-09-2021, 18:51   #34
solarman216
Off road maniac
Click here to find out how to become a paid up member
 
solarman216's Avatar
 
Join Date: Dec 2009
Location: Bexhill on Sea
Vehicle: Y60 Patrol Me, 3 ltr Mrs
Posts: 16,701
Default

Got the stop watch out today and after placing the log and going full height, after the drop, raising again to clear the log ready to place the next took just under 20 seconds, but on testing some 300 mm high straight grained oak, found I only needed to raise it 12 to 15 inches total time for that less than 10 seconds, it is all about judging the log, if it does not go straight through first time then it takes more time to raise and drop again, but of course no effort other than pressing a button, Rick
__________________
Ex banger racer now off road maniac
Lokka on the front with manual hubs
Diff lock on rear
3 inch SS straight through exhaust
Manly winch bumper with 13000 lb winch
10 spike ground anchor, with multiple straps and blocks
Super strong body cills capped with scaffold pole
20% stronger springs all round
aggressive off road tyres on wheels so just swap.
Aim to get stuck and be completely self sufficient in extraction, love getting muddy, 2ft deep is good but rare.
solarman216 is offline   Reply With Quote
Old 11-09-2021, 23:50   #35
solarman216
Off road maniac
Click here to find out how to become a paid up member
 
solarman216's Avatar
 
Join Date: Dec 2009
Location: Bexhill on Sea
Vehicle: Y60 Patrol Me, 3 ltr Mrs
Posts: 16,701
Default

But the most impressive part is that each lift only takes 300 watts, important when you live like me off grid, when I get it home end of this month I will compare mine with the 2200 watt hydraulic machine that I bought, Rick
__________________
Ex banger racer now off road maniac
Lokka on the front with manual hubs
Diff lock on rear
3 inch SS straight through exhaust
Manly winch bumper with 13000 lb winch
10 spike ground anchor, with multiple straps and blocks
Super strong body cills capped with scaffold pole
20% stronger springs all round
aggressive off road tyres on wheels so just swap.
Aim to get stuck and be completely self sufficient in extraction, love getting muddy, 2ft deep is good but rare.
solarman216 is offline   Reply With Quote
Old 12-09-2021, 09:28   #36
Flying Torquewrench
Senior Member
Click here to find out how to become a paid up member
 
Flying Torquewrench's Avatar
 
Join Date: May 2011
Location: Worcestershire
Vehicle: Nissan Patrol 2.8TD
Posts: 961
Default

Those are good cycle times Rick. Even at 20 seconds for full height that will be quicker then a hydraulic machine of the same dimensions.

A hydraulic machine has more control but I rather like your setup.
Flying Torquewrench is offline   Reply With Quote
Old 14-09-2021, 22:58   #37
solarman216
Off road maniac
Click here to find out how to become a paid up member
 
solarman216's Avatar
 
Join Date: Dec 2009
Location: Bexhill on Sea
Vehicle: Y60 Patrol Me, 3 ltr Mrs
Posts: 16,701
Default

Been trying to get some numbers together to ascertain the force when the blade hits the log, so need some maths boys to work it out, here are the details, max drop blade to base = 1.5Mt weight of cylinder 60Kg, now this is the bit of the calk that I cannot get my head around, penetration of blade into log? if I put in 0.001 Mt then assuming a 300mm log I get 7202Kg if the log is softer and it penetrates 0.01Mt then I get 720Kg, but should I increase the drop by 90mm to compensate? sorry can someone please explain, Rick
__________________
Ex banger racer now off road maniac
Lokka on the front with manual hubs
Diff lock on rear
3 inch SS straight through exhaust
Manly winch bumper with 13000 lb winch
10 spike ground anchor, with multiple straps and blocks
Super strong body cills capped with scaffold pole
20% stronger springs all round
aggressive off road tyres on wheels so just swap.
Aim to get stuck and be completely self sufficient in extraction, love getting muddy, 2ft deep is good but rare.
solarman216 is offline   Reply With Quote
Old 15-09-2021, 22:05   #38
macabethiel
Senior Member
Click here to find out how to become a paid up member
 
Join Date: Aug 2008
Location: Derby
Vehicle: Freelander S2 Auto
Posts: 4,412
Talking You could sell that to the Taleban!

Your log splitter could fetch a good price in Afghanistan for hand amputation on Thieves etc.
macabethiel is offline   Reply With Quote
Old 15-09-2021, 22:06   #39
Flying Torquewrench
Senior Member
Click here to find out how to become a paid up member
 
Flying Torquewrench's Avatar
 
Join Date: May 2011
Location: Worcestershire
Vehicle: Nissan Patrol 2.8TD
Posts: 961
Default

Rick, I am no mathematics professor so I had to resort to the internet. I get slightly different values then you get.

This is the calculation with an impact of 0.001Mt producing an impact force of 8820N. 1N (Newton) is 0.1019Kg.
8820 x 0.1019 = 898.75kg impact force.
Attached Images
File Type: jpg 0D6F7F5F-841A-47B4-9EE7-F7928116EBE2.jpg (52.3 KB, 8 views)
Flying Torquewrench is offline   Reply With Quote
Old 15-09-2021, 22:09   #40
Flying Torquewrench
Senior Member
Click here to find out how to become a paid up member
 
Flying Torquewrench's Avatar
 
Join Date: May 2011
Location: Worcestershire
Vehicle: Nissan Patrol 2.8TD
Posts: 961
Default

Then the calculation for a penetration depth of 0.01Mt. This generates an impact force of 88200N or 8987.58Kg.

The drawing below the calculation (blue object) does explain whythere is a difference in impact force between the two calculations. It all depends on the amount of penetration. I don’t think that increasing the height by 90mm will make any difference.
Attached Images
File Type: jpg 2BFD871B-E574-4A9E-BC1F-FA59891F9D2F.jpg (53.9 KB, 9 views)
Flying Torquewrench is offline   Reply With Quote
Old 15-09-2021, 22:30   #41
solarman216
Off road maniac
Click here to find out how to become a paid up member
 
solarman216's Avatar
 
Join Date: Dec 2009
Location: Bexhill on Sea
Vehicle: Y60 Patrol Me, 3 ltr Mrs
Posts: 16,701
Default

OK thanks for that, it starts to make sense, but for my simple mind it seems I have around 9 tonnes of energy striking a hard log but a lot less on a soft log as the energy is absorbed by the penetration! have I got that right.

And Mac Ouch Rick
__________________
Ex banger racer now off road maniac
Lokka on the front with manual hubs
Diff lock on rear
3 inch SS straight through exhaust
Manly winch bumper with 13000 lb winch
10 spike ground anchor, with multiple straps and blocks
Super strong body cills capped with scaffold pole
20% stronger springs all round
aggressive off road tyres on wheels so just swap.
Aim to get stuck and be completely self sufficient in extraction, love getting muddy, 2ft deep is good but rare.
solarman216 is offline   Reply With Quote
Old Yesterday, 08:37   #42
Flying Torquewrench
Senior Member
Click here to find out how to become a paid up member
 
Flying Torquewrench's Avatar
 
Join Date: May 2011
Location: Worcestershire
Vehicle: Nissan Patrol 2.8TD
Posts: 961
Default

That how I understand it Rick. The force is absorbed by the impact, hence why a softer log has a lower impact force.

The energy that the blade carries when it reaches the top of the log is the same as it falls from the same height.

You could potentially fill the cylinder with concrete or heavy iron the increase the impact force.
Flying Torquewrench is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


All times are GMT +1. The time now is 04:15.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
Images online photo albums