Mark Connaughton

[Mark Connaughton]

Hello.

Anyone help with small problem?

I have a Kioti DK50 and was using it with a topper that I have had for a number of years when the sheer bolt snapped -unreasonable rock involved-checked and tightened blades under topper and replaced sheer bolt -got 100yds before it snapped again and again. The tractor is 50hp; the topper is 5foot with a single arm underneath carrying two rotating blades -each of which can swivel freely. With my previous tractor -20hp this little topper worked on the same ground with no difficulty.

Many thanks in advance.

 

[jbrumberg]

Mark:

Welcome to TBN ! I assume your "topper" is a rotary cutter. There is a lot of PTO HP turning that driveline than with your 20 HP tractor. I keep thinking there is too much power and/or your shear pins are too soft with the DK50. Are the blades seriously chipped or the single arm blade carriage bent- throwing everything seriously out of balance? Jay

 

[Mark Connaughton]

thanks for welcome and the prompt reply. Yes, it is a rotary cutter. Blades and bar are in good condition. Blades replaced last year. Arm is straight so maybe just down to the strength of the sheer pins I got as replacement but the pto shaft is now also extended by about 4inches as its a bigger tractor. Would that matter?

 

[jbrumberg]

Mark:

I am no engineer, but I do not think that it should matter since the sliding (male/female) drive lines are still engaged. I would try a stronger shear bolt in a nonobstructed area filled with "unreasonable" rocks and give it a spin. Jay

PS: I like your term "unreasonable" . I have met a few in my life . Jay

 

[mark.r]

Grade 5 bolt perhaps?

 

[B8FISH]

No slip clutch? If not, what RPM are you engaging the PTO at--with the extra HP you may be snapping the bolt when you engage and it may not fall out for 100 yards??

 

[Mark Connaughton]

Thanks for those contributions. I shall get grade 5 bolt for starters! As for revs when engaging pto, my tractor has 540 only and I would usually engage pto in middle gearbox in first at low revs. Will report back when bolt fitted. Litttle trip required.

 

[daBear]

Hey Mark, what part of Texas are you from? kind of a funny accent.

 

[Mark Connaughton]

Hello there!

Wicklow in Ireland! Little bit east of Texas

 

[daBear]

Hello there!

Wicklow in Ireland! Little bit east of Texas

Wow, I was just kidding you. You have a perfectly nice accent and welcome to the TBN forum. There are some very helpful folks around here and I have certianly learned a lot. Stick around, enjoy yourself, and don't hesitate to jump into a conversation.