This is the #1 best channel for these units. Well thought out and sound information. Something that a lot of folks seem to miss, is that the Briggs, being air cooled, has a fan built into the flywheel that pulls air in from the right side (near pull start) and blows out on the left, under the muffler. Blowing air in from the right is the thermodynamically superior setup. That keeps the hot air from being recirculated, and just getting hotter. Shielding the muffler is also very effective at keeping the radiant heat from saturating the engine compartment. Love your camera shots ,too.
Great video, I have the EXACT same model. I just did a 3-day dig project without having fans installed. I removed the entire back panel from the engine compartment and it ran GREAT for the whole 3 days, no overheating at all. Will prob still do this fan install though as it was a very good step-by-step video. Thanks! Something else to think about for this model that I did was change where the seat belts are bolted in, it pretty dangerous to have them attached to the seat that folds up. If you ever tip over, you’ll definitely regret it. I bought new belts and attached to the bolts for the canopy. Anyway, best of luck!
I installed my 7 inch cooling fan in the lower left rear corner of my H12 mini excavator. I used heavy solid stainless steel wire to attach it to the intake grill. I chose this location because I'm pushing cool air into the engine compartment and this location blows cooler air on the hydraulic oil tank, the engine cylinder head and the hot exhaust muffler at the same time. These three items will be getting the hottest, so providing a cooler air flow should provide the maximum benefit. BTW - The inexpensive Amazon 7 inch cooling fans say 12V 80W but they are actually 40W and draw only 3.34 amps. For power, I did a few tests with a multimeter and created the perfect solution. I found three wires tape and stowed beneath the upper panel to the right of the seat. They are black, green and yellow in color. The black and green wires have the power that I needed to run my fan. If either the ignition key or ground stop T-handle are turned off, power is removed from the circuit. I installed a toggle switch 2 inches below the choke knob which is located on the vertical panel below the front of the seat on the right side. I configured the toggle so that it's in the down position when turned off, so that if the machine is left out in the rain, water will drain down the toggle away from the switch. The circuit is protected with the same fuse that is used for the hour meter, LED floodlight and ignition switch.
Thanks for the video, glad you were able to run the problem down, the basic briggs coil design hasnt changed much over the years. I have one of these things being delivered Friday. I plan on mounting some fans on it and maybe an external hydraulic cooler. Maybe we can share info. I considered buying a used excavator earlier this year, but the used machines with 10000 hours, oil burning, sloppy pins, leaking everywhere with popcorn welded booms are still going for 20k. Unbelievable what these folks think there worth. I decided to buy one of these instead. Wishing you good luck. Thx again
Just wanted to say great job on the videos. I’m just getting into these machines and excited about it. Stumbled upon one of your videos and really appreciate your overall demeanor, and knowledge, and ability to articulate. Thank you & keep it up!
You may want to rethink running your fan off the red-handled hour-meter destroyer switch. Those fans take a lot of current, and if your battery is running low, it would be preferable to be able to run the starter motor with the fans off. Best to remove the tee-handle switch, a relic of the diesel engine.@@thegarageconnection
@@dfk8881 the fan is running directly off the battery and the engine block, the battery disconnect switch handles all of the amps when starting the machine and there’s no way the fans pull that many.
Fans like you installed draw typically 6-7A. You can read the spec off the packaging or measure it with an ammeter. The B&S 420 engine usually comes with 1 or 2 charge coils, rated at 3 or 10A output at 3600RPM. Running your fans will discharge the battery since they draw more than the alternator puts out. But don't rely on some random Utube commentor; take the current measurements yourself. BTDT@@thegarageconnection
@@dfk8881 with switch on, engine off, I’m getting a steady 4.85Amps draw on the battery, obviously peaks higher at initial startup. I’m getting conflicting information about the exact charging system run on these engines however
Did the fans help with cooling? Or do you feel it necessary to add a hydraulic cooler? Thank you in advance! BTW, I ordered the drive motor guard from you. I love it! I have a Kymron YH14 and it fit just fine.
If you buy one of these machines, do yourself a favor and throw that disconnect in the trash. The jungle website has automotive kill switches that are all aluminum for under 50 bucks.
No, the red tee-handle switches are of good quality. I have a bunch of them, removed from 1-ton Chinese excavators. They are not needed, plus, they can be left on with engine off, ruining the hour meter. They are there as a relic of the 1-cyl diesel engine that did not have a key switch cutoff. The diesel used a mechanical way of turning it off, as part of the engine speed lever. A different key switch is required for the gas engine.@@CGreciful
The machine I’m buying is a Rippa 1T. It has a fan installed from the factory and not enough slots cut to add another on the same side. When I install a fan on the other side should I make it where both fans are blowing into the engine compartment or a one direction flow? One blowing in and one blowing out? I’m out of Texas so it’ll be 100 plus degrees often when I’m running the machine. Thanks for your videos, very helpful!
what would be wrong with mounting the fan on the outside?? maybe it could damaged ? my Rippa is NOT so easy to get to the inside of it.. i have to take the whole side off, and attach, then put side back...also on the Gas tank side the it would have to go lower, because the gas tank is in the way on the inside... thoughts ?
Thanks again for video. Does the engine magneto provide enough current to support the fans as well as battery charging as well as the other electrical consumers on the machine. Wondering if you have enough reserve magneto output to support the fans, IE no battery drain when running
I’ll throw the multimeter on there and obtain an amp draw with the motor off, and then with the motor on at the battery and hopefully it’s able to charge the battery, if not it should be pretty evident
That is a very important concern, as these radiator-type fans draw a lot of current. More than is put out by a 420cc gas engine with only one coil. Most of the B&S units have 2 charge coils, but you can not assume that. You must do a current measurement with an ammeter first. Also, ducting the mechanical fan like they do in China with the 1-cyl diesels is a better solution. My Duromax engine puts out less than an amp, so I can not use the big fans.
I'm shocked that you can keep that battery in a good charge state with twin fans as they normally have a pretty good draw and I didn't think that briggs would put out that much when you consider the need for the starter and any other accessories...Good video, thanks...
You never want to run a circuit at full capacity. Good practice is to keep 25% head room for reliability. So with a 10amp drive, you don't want to draw more than 7.5amps continuously. Check NFPA 1901 standards 13.2.8 as a reference to the 25% head room on circuits.
@@thegarageconnectionThanks for the great videos. I am looking at adding another fan (My HT10 came with a hydraulic cooler with a fan. The 6" fans I am looking at all seem to be about 80 Watts. With a 12V system the means about 6.6 Amps. I am nervous about exceeding the charging system. I'll look forward to seeing how yours works out.
@@thegarageconnection The 12volt fan at 80 watts draws 6-1/2 amps, times 2 fans is 13A, which seems to exceed the 10A capacity of the charging circuit by 30%. Have you had any practical time to use the excavator to see the fans work and the battery remain charging? Not overloading the charging circuit? Great videos--Thanks for making them available to all of us.
Air already comes in on the right side with the motor spinning and drawing air in (the pull start housing). So having a fan on the left side pulling outside air into the engine compartment helps cool off that side and that's where the hydraulic pump is as well. And having a fan blowing on that helps as well.
That can't be can it? The specs clearly say 80W fans EACH. Your reading of 4.85A at 12V is 58W... for both? I just ordered a pair of slightly smaller 50W fans because I didn't want to push the ~180W max output of the engine's alternator. (My unit has also has cab lights, boom light, cab fan and wiper motor and running the spark has to come out of that also) If the fan maker of the model you used lied about the output and it's actually that low I might have gone with yours instead just to have a better fit on the cutouts on the chassis.@@thegarageconnection
This is the #1 best channel for these units. Well thought out and sound information. Something that a lot of folks seem to miss, is that the Briggs, being air cooled, has a fan built into the flywheel that pulls air in from the right side (near pull start) and blows out on the left, under the muffler. Blowing air in from the right is the thermodynamically superior setup. That keeps the hot air from being recirculated, and just getting hotter. Shielding the muffler is also very effective at keeping the radiant heat from saturating the engine compartment. Love your camera shots ,too.
Great video, I have the EXACT same model. I just did a 3-day dig project without having fans installed. I removed the entire back panel from the engine compartment and it ran GREAT for the whole 3 days, no overheating at all. Will prob still do this fan install though as it was a very good step-by-step video. Thanks!
Something else to think about for this model that I did was change where the seat belts are bolted in, it pretty dangerous to have them attached to the seat that folds up. If you ever tip over, you’ll definitely regret it. I bought new belts and attached to the bolts for the canopy.
Anyway, best of luck!
I installed my 7 inch cooling fan in the lower left rear corner of my H12 mini excavator. I used heavy solid stainless steel wire to attach it to the intake grill. I chose this location because I'm pushing cool air into the engine compartment and this location blows cooler air on the hydraulic oil tank, the engine cylinder head and the hot exhaust muffler at the same time. These three items will be getting the hottest, so providing a cooler air flow should provide the maximum benefit. BTW - The inexpensive Amazon 7 inch cooling fans say 12V 80W but they are actually 40W and draw only 3.34 amps.
For power, I did a few tests with a multimeter and created the perfect solution. I found three wires tape and stowed beneath the upper panel to the right of the seat. They are black, green and yellow in color. The black and green wires have the power that I needed to run my fan. If either the ignition key or ground stop T-handle are turned off, power is removed from the circuit. I installed a toggle switch 2 inches below the choke knob which is located on the vertical panel below the front of the seat on the right side. I configured the toggle so that it's in the down position when turned off, so that if the machine is left out in the rain, water will drain down the toggle away from the switch. The circuit is protected with the same fuse that is used for the hour meter, LED floodlight and ignition switch.
Really informative, well done videos. I just used my hour meter connection. I swapped in a induction type hour meter so those leads were open
Thanks for the video, glad you were able to run the problem down, the basic briggs coil design hasnt changed much over the years. I have one of these things being delivered Friday. I plan on mounting some fans on it and maybe an external hydraulic cooler. Maybe we can share info. I considered buying a used excavator earlier this year, but the used machines with 10000 hours, oil burning, sloppy pins, leaking everywhere with popcorn welded booms are still going for 20k. Unbelievable what these folks think there worth. I decided to buy one of these instead. Wishing you good luck. Thx again
Just wanted to say great job on the videos. I’m just getting into these machines and excited about it. Stumbled upon one of your videos and really appreciate your overall demeanor, and knowledge, and ability to articulate. Thank you & keep it up!
sorry if I missed it, but do you have the link (s) to the products (fans and electrical components you used) or where you got them?
Keep it up!
We are going to need lots of info on these. It doesn’t seem like anyone else is diving into these excavators!
I’m debating coming up with a kit for the cooling fans, selling it as a plug and play all in one setup.
You may want to rethink running your fan off the red-handled hour-meter destroyer switch. Those fans take a lot of current, and if your battery is running low, it would be preferable to be able to run the starter motor with the fans off. Best to remove the tee-handle switch, a relic of the diesel engine.@@thegarageconnection
@@dfk8881 the fan is running directly off the battery and the engine block, the battery disconnect switch handles all of the amps when starting the machine and there’s no way the fans pull that many.
Fans like you installed draw typically 6-7A. You can read the spec off the packaging or measure it with an ammeter. The B&S 420 engine usually comes with 1 or 2 charge coils, rated at 3 or 10A output at 3600RPM. Running your fans will discharge the battery since they draw more than the alternator puts out.
But don't rely on some random Utube commentor; take the current measurements yourself. BTDT@@thegarageconnection
@@dfk8881 with switch on, engine off, I’m getting a steady 4.85Amps draw on the battery, obviously peaks higher at initial startup. I’m getting conflicting information about the exact charging system run on these engines however
Glad I found your channel. Extremely helpful! Keep em coming.
Great video! Thanks for sharing. I just bought one of these mini ex's and need to do some mods.
Right on!
Awesome video! Lookong forward to the next one.
Coming soon!
Did the fans help with cooling? Or do you feel it necessary to add a hydraulic cooler? Thank you in advance!
BTW, I ordered the drive motor guard from you. I love it! I have a Kymron YH14 and it fit just fine.
Could I just wire my fan to the hour meter terminals?
If you buy one of these machines, do yourself a favor and throw that disconnect in the trash. The jungle website has automotive kill switches that are all aluminum for under 50 bucks.
Do they have a reputation for poor contact, generating some heat?
No, the red tee-handle switches are of good quality. I have a bunch of them,
removed from 1-ton Chinese excavators. They are not needed, plus, they can be left
on with engine off, ruining the hour meter. They are there as a relic of the 1-cyl diesel engine
that did not have a key switch cutoff. The diesel used a mechanical way of turning it off, as
part of the engine speed lever. A different key switch is required for the gas engine.@@CGreciful
@@dfk8881I still like the battery shut off, and mine is wired to the key anyways
@@dfk8881this is exactly what happened to me. Ruined my hour meter. Can they be replaced?
@@mikemackenzie8361 Yes, the hour meters are cheap (
The machine I’m buying is a Rippa 1T. It has a fan installed from the factory and not enough slots cut to add another on the same side. When I install a fan on the other side should I make it where both fans are blowing into the engine compartment or a one direction flow? One blowing in and one blowing out?
I’m out of Texas so it’ll be 100 plus degrees often when I’m running the machine.
Thanks for your videos, very helpful!
Does your machine have a fluid cooler?
@@thegarageconnection only a fan blowing into the compartment no oil cooler
What size wiring did you use to wire the fans, or where did you get the wiring harness at?
why did you choose that side of machine to install fans on? thanks
Great add on 👍
I'd just leave the back cover off while it's hot outside. The charging system on these Briggs engines is only 9 amps.
what would be wrong with mounting the fan on the outside?? maybe it could damaged ? my Rippa is NOT so easy to get to the inside of it.. i have to take the whole side off, and attach, then put side back...also on the Gas tank side the it would have to go lower, because the gas tank is in the way on the inside... thoughts ?
Thank you!
Do you have a link on the fan? Where purchased?
Great video, can the engine still keep the battery charged and run the fans?
Absolutely
The fan's don't draw much. 12v, 1.5A.
Thanks again for video. Does the engine magneto provide enough current to support the fans as well as battery charging as well as the other electrical consumers on the machine. Wondering if you have enough reserve magneto output to support the fans, IE no battery drain when running
I’ll throw the multimeter on there and obtain an amp draw with the motor off, and then with the motor on at the battery and hopefully it’s able to charge the battery, if not it should be pretty evident
That is a very important concern, as these radiator-type fans draw a lot of current. More than is put out by a 420cc gas engine with only one coil. Most of the B&S units have 2 charge coils, but you can not assume that. You must do a current measurement with an ammeter first.
Also, ducting the mechanical fan like they do in China with the 1-cyl diesels is a better solution. My Duromax engine puts out less than an amp, so I can not use the big fans.
@@dfk8881 amazingly the newer 13.5HP Briggs has a 10-amp regulated alternator installed!
That's great news. I am envious. I would love to run one of your high-current fans.@@thegarageconnection
@@dfk8881 Of course.... plenty of power... I run two of these for hours on end. The fan's don't draw much power.
Is the motor capable of supplying what the fans consume so as not to drain the battery and keep it charged?
@dougadams9419The charging stator produces 9amps. I don't see how you're going above this and still having battery charge left
I'm shocked that you can keep that battery in a good charge state with twin fans as they normally have a pretty good draw and I didn't think that briggs would put out that much when you consider the need for the starter and any other accessories...Good video,
thanks...
10amp capable on the Briggs
You never want to run a circuit at full capacity. Good practice is to keep 25% head room for reliability. So with a 10amp drive, you don't want to draw more than 7.5amps continuously. Check NFPA 1901 standards 13.2.8 as a reference to the 25% head room on circuits.
@@thegarageconnectionThanks for the great videos. I am looking at adding another fan (My HT10 came with a hydraulic cooler with a fan. The 6" fans I am looking at all seem to be about 80 Watts. With a 12V system the means about 6.6 Amps. I am nervous about exceeding the charging system. I'll look forward to seeing how yours works out.
@@thegarageconnection The 12volt fan at 80 watts draws 6-1/2 amps, times 2 fans is 13A, which seems to exceed the 10A capacity of the charging circuit by 30%. Have you had any practical time to use the excavator to see the fans work and the battery remain charging? Not overloading the charging circuit? Great videos--Thanks for making them available to all of us.
It's not a problem at all, these fans don't draw that much.
Well done video
Which fan did you choose?
Air already comes in on the right side with the motor spinning and drawing air in (the pull start housing). So having a fan on the left side pulling outside air into the engine compartment helps cool off that side and that's where the hydraulic pump is as well. And having a fan blowing on that helps as well.
Do you have the part number to order those same fans for my machine? Awesome and informative videos..
I believe it’s in the comments or description
@@thegarageconnectionI don’t see it.
Great install video! I already have a hydraulic cooler and filter, can you sell me just the hose kits?
Yes we can
@@thegarageconnection How much would that be and when could you get them to me?
By the way I have a HQ12R
@@thegarageconnection Can you give me a price?
What’s the max amperage you can run off that machine as far as accessories go without pulling too much current.
9-10amps DC
Can you give me the information about the fans where I can buy them once again thanks
Amazon any 12v fan will work
yep. it Overheating why they didnt install it and with some temp swith
Thanks for the great idea. Do you mind sharing the link for the fans?
Fekuar 6 Inch Slim 650CFM... www.amazon.com/dp/B087TF2N2S?ref=ppx_pop_mob_ap_share
Those fans draw 6.5A each, according to labeling. Trust, but verify. @@thegarageconnection
@@dfk8881 I did a running load reading of 4.85A for both fans running
That can't be can it? The specs clearly say 80W fans EACH. Your reading of 4.85A at 12V is 58W... for both? I just ordered a pair of slightly smaller 50W fans because I didn't want to push the ~180W max output of the engine's alternator. (My unit has also has cab lights, boom light, cab fan and wiper motor and running the spark has to come out of that also) If the fan maker of the model you used lied about the output and it's actually that low I might have gone with yours instead just to have a better fit on the cutouts on the chassis.@@thegarageconnection
@@advil000 correct both fans running engine off
Can you give us a link to the fan ?
@dougadams9419 Thank you !
Information where can I get those dans please
What are your thoughts on having a fan mounted on each side of the machine blowing onto the motor?
I believe the best scenario is two fans pulling
Thanks for the reply. love your channel, keep the great content coming
Why not just run it off the hour meter?
I didn’t want to overload the hour meter circuit
yer 1 thing that's not good about the direction of the fans, you will be pulling lots of dust into the motor
Fans blowing out will still draw in dirty air from the outside. I chose to blow air at the engine instead of evacuate the compartment