Welcome to Keene Engineering! The world leader in portable mining and prospecting equipment.
Family owned and operated since 1955.
OPEN MONDAY THROUGH FRIDAY!
Open Saturdays by request and appointment only. Hey, we want to get out there and do some digging too!
Do not hesitate to call if you need to pop in on Saturday. We will be more than happy to accommodate your schedule!
Now you can…
DON’T GET CAUGHT UNPREPARED!
Time For Some Good News!
Take a minute to read this very exciting article by Shannon Poe at the American Mining Rights Association!
HOT OFF THE PRESSES!
Get your copy of the new Keene Catalog! Click HERE to request your copy today!
WHAT’S HAPPENING…
The San Fernando Valley Prospectors
monthly outing, Dec. 7-10th. We get together with alll of our prospecting friends for some real adventure. It's all about enjoying the outdoors with great friends, good food and hopefully some good gold. I was lucky to find three little nugget my first couple of hours of detecting. The weather was absolutely perfect. Gene found some interesting rocks with his ultraviolet lamp Saturday night time. Went on some fun rides on the off road toys. If you have never gone to any of the outings, you are missing out on life.
Merry Christmas and Happy New Year! That's some nice Lunker's in that their pan Man
Wish I had been informed
Great pictures
Thanks for letting Nick and I drop in on you all. Merry Christmas and happy prospecting!
Awsome!
Wish I could of made it
Amen Mister Pat. 🙏🏻🙏🏻
I need to just get in the truck and drive out there....
Awesome Pat.
Hi Pat!!!
We sure have missed going - hopefully, a few next year!
Well done. Looks like you guys had a blast.
These are a few more pictures of our new 5" / 6" mini ultra. This picture shows a better picture of a sluice box with the "Slow flow" sluice box. I hope to be testing this next week. Our next test is to place it in a pool and check out the floatation. The dredge is long; however, it is still smaller and more compact floatation.
Mark
We have not had a problem with the 3" or the 4" so hopefully, we will not with the 5/6" I do like a few large open riffle for larger gold nuggets and gold and quartz pieces.
Did any rivers in CA open up??
Do you get a discount working at Keen and if so where do I sign up 😁👍
Build one Sally
THEOBALDO. LOHNHOFF
Bruno gdaj bo plaval??
Will be interesting to see if mid section piles up.
Sean Magnuson
Nothing is as easy at it seems we had to add an air compressor to this gravel pump system. So we had to make custom shafts and pulley adaptors. Makes me appreciate having good quality talented people working for us. It is almost impossible to find old school machinist that can do just about anything. Plus the help of a water jet machine.
It’s a farmer type attitude. If we need it we can make it.👍
I.de love to be a old school machinist but can.t find anyplace to get trained.i like to design and build things and being a machinist is a part of that.
I've got cnc mill and lathe exp, if yer hiring. Bought two goldwheels from ya. m.facebook.com/story.php?story_fbid=10213099696751930&id=1379166590
This is our lastest sluice box we are working on. We are going to have it tested now.
I will gladly test it
Where do u sign up to be a tester? Lol
James Marston
Me. Interesso. Comprar
Pat we will gladly test any dredges you want up in alaska! Www.goldfeveralaska.com
Katie McAninch
Could you make one for my 6" dredge?
Mark Davidson
Do you never make crash box instead of flairs for fine gold recovery?
Would never run any box again with out a rear fine gold recirc sump ! could make that sluice slip black sands and gold in 4 hours
We are always working on new dredges and sluice box designs. Currently, we are working on a new 2.5" ultra with the slow flow fine gold recovery system. Going out for testing next week. We are working a 5/6 Ultra dredge with dual 4 hp or 6 hp engines. This is lighter more compact dredge built for the hard to get locations or hardcore weekend warriors. We are also working on your standard 5" / 6" dredge improved frame assembly.
We are also back working on our RC812 large Rock Crusher. The crusher held up several months of tough work however we had a failer in the pivot bar assembly so we are now beefing up the crusher further. You can see the diesel engine and custom-made gearbox.
We never stop working on projects and we are always striving to manufacture a better piece of equipment.
Bobby Freedom, I sell those, LOL
We would love to see a two stage medium-sized sluice box similar to the old Cal Sluice using drop riffle effect with a classifier screen. and lower catch basin, but with Keene's own unique design.
🔥🔥Badass!!🔥🔥
Man idw love to work for you guys!
Nice!
Keene Engineering, Any plans on making a 3” Ultra with the slow flow design?
Y'all just brought a tear to my eye's.......lol😃
How much it cost ??
😃WOOOOO♡☆
how much?
Mr keen do you have any store outlet in the phiilippinea?
It's that time of year!! What are you asking Santa for?
www.keeneeng.com
Please santa can I have the 6inch super max dredge and full face dive mask
Everything Keene Engineering♡☆
Allots on my wish list , lol.
I'm asking for cheaper shipping from USA to Germany.. 😅 And a MultiColored Dream Mat from Australia.. 😆 Blut if you will send me a 6" dredge, i wouldnt San No.. 😅
Elisabeth Valenta 😍
Over the Thanksgiving holiday, we had a break in, a smash and grab in our showroom. They did get away with several metal detectors and a few other items as well.
This is our new reinforced front door with a custom mural with aluminum backing to reduce the chance of a smash and grab. We used a heavy gauge aluminum water jetted part. I turned out really nice, better than we thought. If anyone is interested in one let us know and we can quote one. Good luck ever getting through this door !!!
Oh no I’m so sorry to hear this 😔 I hope they are in camera and caught!!!
I hope you had the serial numbers! And HD cameras to post for the world to see.
Hope you catch who ever did it.
Use laminated glass in the door, more $ but nobody will get through it. (Easily)
Love the door!
Break glass...hook on door jamb and pull whole door out.....better expense...German Shepherd. ...
Any model/product numbers we can watch out for on Craigslist? I hope the culprits are caught.
It takes all kinds, hope they get caught
I hope that they pay the ultimate price! Can't stand a thief! God willing I will find the ones that took my gold dredge.
Maybe add another one to the top window as well ?
Hope they get caught and put away for life!! 😡
Sorry you got broke into. That door is cool.
Put this kind of poles in front of your doorway in order to prevent it's becoming a drive in.They will try.
Sorry to hear about your troubles but you did get a beatytifull door . It looks great
The door looks very cool !! wish the detectors had gps tracking on/in them. It would be awesome to knock on another door and say, "GIVE ME MY SHTuff BACK !!! "
I'm packed with drums and repetition... ifn y'all need security
Sorry to hear about the break in. They'll get theirs. Door does look good though
Especially KEENE ENGINEERING thieves
Don’t count your chickens before they hatch. Thirty seconds and that door is laying in the street. Pat Keene feel free to PM me for info.
Thieves are awful, our local mining shop ( The Miners Cache - Redding Ca) Was broken into twice and they grabbed nearly all detectors and other equipment both times. I hope that you guys got good footage of them and that eventually they are caught and have to face the music (I hope it's really bad music too.)
That sucks, like the new door
So sorry to hear about the smash and grab guys! Great looking fix to the problem!
Great,hope you got pictures of the bad guys..The door design is eyecatching...
While it sucks that they broke in and stole the equipment, I'm loving the new door.
Hate to hear about the break in. Awesome door though.
This is a from a customer over in New Zealand. Chris Pritchard. Chris takes the time really break down improvements has made and documents everything. Guys like Chris make my job much easier and I am grateful for his help. He has modified a GX200 Honda and has a custom P180 pump with a taller impeller. Chris has also made several other upgrades that improved the performance of the dredge as well.
The motor mods cost be approx $500 per motor.
It included a ported and polished gx160 head that has been skimmed by 0.80 inch. This drastically increases the compression. These heads have a slightly more efficient combustion chamber as well!
On top of this the exhause and intake valves were upgraded in size from from 25mm to 28mm for the inlet and 24 mm to 25 mm for the exhaust. Stainless steel valves were also added as well as ratio rockers to increase valve height ( increases amount of air entering cylinder). I also run 28lb valve spring as this reduces valve float at high rpm and helps with sealing at high rpm. From here chrom moly pushrods with brass aligners had to be installed to reduce weight of valve train while also being stronger.
A new 3 stage exhuast was fitted to allow better scavenging of the cylinder as well as helping with cooling. A gx390 carb was bolted on with bigger jet sizes as well as the choke filled down to reduce air turbulence and flow. A high flow air filter was also added with a velocity stack to improve air ram effect. A fuel pump was also added to pressurise system and provide a secondary filter for fuel.
Ignition was advanced 6 deg to increase power and torque.
A ceramic flat top piston was installed with stock size rings and nothing was done to the bore. This piston is lighter weight stronger and allows a higher compression ratio to be run as it reduces combustion chamber size. The ceramic piston also reduces head conduction and reduce friction against the bore.
Everything else is stock as genuine Honda engines are made out of forged components and are almost indestructible. They can easily support up to 30hp at 11000 rpm . I have tweaked the governor so as to allow me to run up to 4000 rpm. I can run at these high power settings for long periods of time. I run full synthetic Mobil 1 5-30w engine oil which is some of the best but expensive oil one can run.
Last time I checked cylinder born wear had not removed hone markings and crank bearing limits were within factory specs. Ive also added a cylinder temp monitor and have found engine runs cooler than stock while at the same time consuming the same amount of fuel ( this is also due to running at a lower rpm)
I run special open style spark plugs that are gapless. These protrude into the combustion chamber increasing compression and also allowing a more complete burn of the fuel
Check out www.nrracing.com as this is where I get all my parts from
Engine weight has also been decreased due to these mods compared to stock by approx 1.2kg . Basically im getting the power and torgue of a gx390 with over half the weight and better fuel economy.
My next project to to add a fuel injection system to the motors to allow pricise fuel delivery and economy plus easy starting.
I run typically in the 2700- 2900 rpm (which is actually pretty low and helps with compressor life) but if im deep or need to strip overburden and need extra suck ive run up to 3800 rpm for long periods of time
Regards
Chris
NR RACING THE LEADER IN HONDA GX & CLONE PERFORMANCE
nrracing.com
We specialize in Honda GX120, GX160, GX200 and 6.5 Clone Performance for Karting, 1/4 Midget, Mini-Bike, Mokai, Winch Boarding, Tractor pulling, and Bar Stool applications. Championship winning motors...
I never thought about building the motor, hmm. Wonder what I can squeeze out of the 160?
Basic go kart mods will greatly improve a gx200 engine. Under load on a mini tach with a pca10 compressor it would only turn 2750 rpm. Impellers are balanced to 4000 or so. Much better performance modified and in a small package
very good
WHAT’S HOT!
New and Improved Super Concentrator with an even better price!
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This New Super Mini Max Power Sluice Concentrator unit is the most versatile package that we have ever offered.
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