Modifications to a Jinma chipper

BigE_ · Mar 17, 2008

OK, now I'm confused. Agent Blue wants hydraulic feed, and sugarmaple talks about a feed roller.

I currently have a standalone (ProMark / Gravely 310) 23hp brush chipper, and when it was running right, anything that could fit in the feed hopper it could chew up with no problems. It would go through a 6 foot high, 15 foot diameter pile of brush in 15 minutes or less. Of course, it has a huge flywheel and 12" cutters on it, and hydraulic fed. Unfortunately, the engine blew, and it is about $2k to replace with a Honda gas engine. Diesel engine is even more money.

A Jimna PTO chipper can be had for $1450, and while I hate to get rid of the ProMark, I can get the 3ph chipper around a lot easier and into more places in the woods.

srjones · Mar 18, 2008

BigE_ said:
OK, now I'm confused. Agent Blue wants hydraulic feed, and sugarmaple talks about a feed roller.
.....

A Jimna PTO chipper can be had for $1450, and while I hate to get rid of the ProMark, I can get the 3ph chipper around a lot easier and into more places in the woods.

I'm not quite sure what Agent Blue's point was. I have read of some folks converting the roller to hydraulic drive, though.

I think sugarmaple was talking about a mechanical foot lever which raises the roller when a something gets stuck. This is yet another mod I plan to do.

Where can you get one for $1450? A local dealer or ebay/mailorder?

chuck4389 · Mar 18, 2008

Great ideas for mods! I too have added a small toolbox and just today I added some skull protection. Seems like every time I walk by the chipper, I hit my head on the discharge chute. So I slit some heater hose and screwed it onto the chute.

srjones · Mar 18, 2008

I like it! Although I've never personally smacked my noggin on the discharge chute, I can think of a bunch places where heater hose would provide some protection.

Kays Supply · Mar 18, 2008

I used a straw blower one time that had a chute that would rotate. I am working on a way to put a flat plate on top of the chipper and a matching plate on the chute. I just need to come up with some clamping method that can be loosened easy and then I can turn the chute instead of moving my tractor to aim the chips.

Treemonkey1000 · Mar 18, 2008

A good idea would be to put on a hard hat, ear protection, and eye protection. I wear those around my chipper when ever I am running it. Branches getting tossed and chips flying are the reason. My chipper chute would be hard to bang your head on though.
PS: That's my Dad walking away in the picture

BigE_ · Mar 18, 2008

srjones said:
Where can you get one for $1450? A local dealer or ebay/mailorder?

"Local" dealer in WA. Gorilla Tractors - Implements

Also, there is a dealer in Newberg, OR with the same price. Woodchippers

Same dealer in Newberg will fill my rear tires with Rimseal for $180, which is less than half what the local NH dealer will do it for.

Treemonkey1000 · Mar 18, 2008

There is a Jinma listed on Craigslist here in Seattle for $1200 I think was the price.

AlanB · Mar 18, 2008

Just downloaded my new one off the semi truck.

Hope to mod and put it into service this weekend.

Off to read some of the one million threads pertaining too these units now.

AlanB · Mar 19, 2008

srjones said:
Yes, very much so. In addition, it raises the height by 3.5" and keeps it off of the dirt. Additionally, I can use it to haul/store stuff in the back.

I used pressure treated 4x6s, but I suppose a 2x6 could be used as long as it doesn't extend too far.

The 'lip' that I was thinking about was to counter the effect where the sheet metal flexes and larger stickes with square ends get stopped by the anvil (see the side view, and the lip in red)

I like the idea that Kays Supply mentions. On each side of the roller, there are places were small brush & vines and miss the roller and get wrapped around the shaft. I've tried to draw my understanding of this in the top view.

I think mine actually came with those lips welded in. I will try and snap a picture this weekend.

This is the one I bought

Buy Wood Chippers: PTO & Automatic Feed Wood Chipper Shredders Online

srjones · Mar 19, 2008

New features!

When you take pictures, could I request you get a close-up of the 'spring-lever' as seen here:

AlanB · Mar 19, 2008

srjones said:
New features!

When you take pictures, could I request you get a close-up of the 'spring-lever' as seen here:

Sure, which is the "spring lever" the black on the right, or the yellow on the left?

I think they added that yellow on a 45 degree angle to help with the "tippy" problem others have adressed here.

As I look in my feed chute, it has some additional pieces welded in, that put the axle of the feed roller behind them, I will grab some pictures, but I think that is what was described before.

srjones · Mar 19, 2008

The black lever on the right, thanks.

In addition to the 'kickstand', it looks like the chute extends farther than the basic model. With all the extra distance from the rollers, there's no way anybody is going to lose a hand or arm unless they dive in head first

Kays Supply · Mar 19, 2008

If you go back to AlanB's post and open the attachment you can see the other side of this new model. I like the way the diconnect works out by the chute.

srjones · Mar 19, 2008

Kays Supply said:
If you go back to AlanB's post and open the attachment you can see the other side of this new model. I like the way the diconnect works out by the chute.

Yep, I saw that. It's got pretty good detail explaining how it works. Another good safety improvement.

miketheDrummer · Mar 19, 2008

Just bought mine a few weeks ago from Gorilla here in Puget Sound. Pretty fair pricing & no BS attitude! His price is going up on the next truckload (at least that's what he told me, maybe to get it sold). Heck, I was sold already!

These new Jinmas have a bunch of the mods talked about on this forum-already done. That "Kickstand" only partially addresses the problem & if you're on flat ground all is well. It is fully adjustable, BUT..I live in fear I'll hop on the tractor & drive away with it down, bending it or worse, tearing it off completely. I think I'll cut some 6" Channel & weld to the bottom of the box, extending it out back like another guy did with the treated 4X6.

Hey, what's not to like on these things. I have not yet done anything too heavy but it has digested eveything so far & you're right about that extended chute. You'd have to jump in pretty far to even get your arm close to the feed rollers. I'm 6'2" & I can't get close enuf to worry...Unless something snagged the sleeve & dragged you in. Another mod, tho: There's a "Belly Bar" around the back of the chute to stop everything if that happens! Check it out in the photos.

My $.02

Mike

denmansoft · Jul 15, 2008

There was mention here about a foot or pedal control for the feed roller...
Has anyone done that and have some pics of the arrangement ?

srjones · Jul 15, 2008

I seem to recall reading that in a different thread, however I don't recall seeing pictures.

I keep thinking of building a 'belly-bar' but then think a foot petal might be better.

If you find a good link, please copy it here.

Thanks,

-srj