Kubota GR2100 PTO Speed?

   / Kubota GR2100 PTO Speed? #11  
The John Deere blowers sold in Canada are definitely RAD. Visited a big Deere dealer and went to the shop with the salesman where they had a 54". He acknowledged RAD makes them.

I suspect the upgrade kit will consist of a new fan with the flange for the latest shear bolt design along with the black part in an earlier photo, to go on the fan shaft and mates to the new fan. There may be changes in the gear box as well.

If you are impressed by distance the blower throws, educate yourself on rotating drum blowers. They bypass the chute, thus eliminating friction, and the snow goes a long way.

Airports which have wide runways use them. Locomotive snow blowers often use that design.

Normand N86-282HTR Side Discharging Snow SnowEquipmentDealer.com - YouTube

Look in the next video around 1:30 to see the snow now coming out not using the chute

Schulte Snow Blowers SDX-12, RDX-12 - YouTube

More snow outside the chute

RDX 117 Schulte Snow Blower on FM-35 Front Mount Frame - YouTube

This image is a close up of the discharge of a rotating drum. The snow comes out the round nozzle and not up the chute when you want lateral distance.

OJNM0vr.jpg



A gravely walk behind has the next best thing where the drum and chute rotate so the snow comes off the fan and straight up the chute with no turns. For 12 HP amazing! Called the “snow cannon.”

My blower is 90” inverted and my priority is not distance but throughput. I blow in High range 2nd gear at about 6-7 kilometers per hour. The blower is just keeping up and the auger is buried in a heap of snow. I cannot go faster because the fan cannot move more.

Dave M7040
 
   / Kubota GR2100 PTO Speed?
  • Thread Starter
#12  
I'll take a look at the videos but cool stuff! I wondered how they got them to throw so far. Yes I've seen the airport/train type blowers in action.

You have a 90" inverted? Are you talking about a 3ph mounted unit where you "pull forward"? If so how do you like it? Always wondered how'd they fair in deep snow.

Well I finally got a response on my request to RadTech. However...it wasn't RadTech. They forwarded it to Kubota Canada who contacted me. Their initial response was they wanted to look into the matter further (sounds standard for we're not promising anything). However they now have to forward this to Kubota USA. More waiting.
 
   / Kubota GR2100 PTO Speed? #13  
I'll take a look at the videos but cool stuff! I wondered how they got them to throw so far. Yes I've seen the airport/train type blowers in action.

You have a 90" inverted? Are you talking about a 3ph mounted unit where you "pull forward"? If so how do you like it? Always wondered how'd they fair in deep snow.

Well I finally got a response on my request to RadTech. However...it wasn't RadTech. They forwarded it to Kubota Canada who contacted me. Their initial response was they wanted to look into the matter further (sounds standard for we're not promising anything). However they now have to forward this to Kubota USA. More waiting.

To start this latest story I have to explain. I received an email from CustomerService@Kubota.ca with the subject listed as shear bolt failures.
Having recently been hit by a virus I was cautious and did not reply but rather went to Kubota's web site and contacted them with the following email:

I received an email appearing to be from you.
Since I cannot click on reply without opening it I am suspicious.
If you are trying to contact me because of forum activity I suggest you become a member, identify who you are and who you represent.
There are a lot of upset owners in Canada and the USA who would like to have a real Kubota person to deal with their problem.
David

From Subject Received Size Categories
CustomerService@kubota.ca Kubota Snowblower Shear Bolt 3:20 PM 615 KB


Here is an email I received from:
From: sjohnson@kubota.ca [mailto:sjohnson@kubota.ca] On Behalf Of CustomerService@kubota.ca
Sent: Thursday, February 16, 2017 12:15 PM
To: David Petepiece
Subject: Re: Your email to me re Kubota Snow Blower Shear Bolt

Good morning David,

I did send an email to you yesterday, in response to your message to our vendor - Radtech. It was an email from a 'real Kubota person' and I am the customer service representative for Kubota Canada, however, I cannot join an owner's forum to discuss issues that some owners may be having with their units. I was reaching out to discuss the concerns you raised with our vendor about shear bolts on your snowblower. If you'd like us to review further, we would just need the name of your dealer and some information on the unit if possible (serial number).

Thank you,


Scott Johnson
Customer Service Representative / Repr駸entant de Service la Client鑞e
Kubota Canada Ltd, 5900 14th Avenue, Markham, ON, L3S 4K4
NEW Toll Free Customer Service Line 1-800-405-6916
customerservice@kubota.caKubota | Home

Here is my response:

Scott
It is not me with the blower problems it is many of your Kubota customers and John Deere Customers with RAD products!

I have an M7040 with an inverted 90 blower made by Smyth Welding in Canada. My blower was new in 2006, originally powered by an old Nuffield 465 and in 2012, by the M7040. I live on a farm and clear long trails through the farm and have never broken a shear bolt! Your front blower customers find my story of no broken shear bolts unbelievable as it is so foreign to their world.

I am an old professional mechanical engineer and enjoy participating in three tractor forums.

Your customers in Canada and the USA cannot get the same answer from Kubota or John Deere dealers concerning the products you both buy from RAD.
These customers are experiencing 5 or 6 shear bolt failures just clearing their paved short driveways.

To further illustrate what a mess this is, I have attached two photos. In one there is a Kubota package provided to a Canadian Kubota customer who had a new blower installed at Christmas.
I first draw your attention to the wording on the Kubota package which clearly says Grade 2 bolts only on the fan. Now look closely at the spare bolts the dealer provided with the purchase. The short bolts for the fan shear bolt have Grade 5 markings on the head. If you cannot see the markings trust me I had the customer, another engineer, physically verify that he was provided with Grade 5 bolts as spares. He had not noticed the incongruity between the Kubota package and what he was given but certainly was not happy with his dealer, i.e. your dealer, when he did!

One customer told me he was going to call RAD directly to get his problem solved. He wants to talk to RAD because his dealer is no help! My email to them(RAD) brings you not them responding.

Look at the long bolts in the second photo. The ones with the groves cut in the shank of the bolt. Apparently your dealers are offering a smorgasbord of alternatives. Two shallow grooves, two deep grooves, one groove. They don稚 know what will work and send the customer off to do field testing that should have been done before the blower was painted orange or green.

I have attached photos of a number of shear bolt designs in the fan area. The first is where the bolt passes thru the fan hub and shaft, the next photo has a black flange shear bolt assembly clearly installed on a shaft which was orange and new to begin with. This is a 吐ix by one of the few informed Kubota dealers. The fan has been replaced with one with a flange to match the black part. Is this a secret fix unknown to customers and even fewer dealers? The last photo has the flange in orange and a fan with a matching flange. Obviously a production change.

A neighbour, a dentist was totally frustrated with repeated and frequent shear bolt failures. He took it to his Kubota dealer and said he did not care what it cost but it had to be fixed. For $1,500 it was all his cost!

Both Kubota.ca and Kubota.com web sites have next to no technical information on the small blowers. Customers are too trusting the dealer knows all and will provide a durable reliable product that the Kubota tractors provide. It never dawns on them that the only part that is Kubota is the orange paint, until the shear bolt failures begin and then they get educated.

When asked for my advice on a front blower, I tell your customers to avoid at all costs the products where the gear box is between two halves of the auger. It is a glorified walk behind design!

Many years ago Kubota was doing the same practice of buying snow blowers and painting them orange. However, the products your paint was applied to made by McKee in Canada, were a much more traditional design with the gears behind the fan. A friend with a late 1970痴 B7100 HST has a 48 McKee/ Kubota blower. The gears are out in the open and only lubed by a bit of snow that gets to them. Excellent metallurgy.

I will be interested to your response to the facts and observation I and many others are making.
If you cannot join forums and discuss solutions, then you should as a company be monitoring them before issues grow to this size and negatively impact Kubota痴 image.

Other ag equipment manufacturers have come on forums offering to get involved in a customer痴 problems without continuing the dialogue in public.

David

Now my reply to your recent post.

Here is a picture of my tractor and inverted blower to save lots of explaining.
I love it. Yesterday I was blowing in High range second gear at 10 kph or 6-7 mph.
xQTrWHl.jpg

I now have Trygg studded chains and nothing stops it but sometimes I have to slow down because the fan cannot keep up. I rarely engage the front axle.
<a href="http://imgur.com/D1HbxaJ"><img src="http://i.imgur.com/D1HbxaJ.jpg" title="source: imgur.com" /></a>

Re Kubota and RAD: I guess we will both see how serious Kubota will be in getting involved and having a public solution to the problems their customers are having.

Dave M7040
 
   / Kubota GR2100 PTO Speed?
  • Thread Starter
#14  
I checked out those video links. Those rotating drum types are truly awesome. Saw some videos of the pull types too on a larger tractor like yours. Including one video going through snow that must have been 45cm deep. I was impressed how well the tractor managed driving through snow of that depth while pulling the unit behind it. And the pull type sure beats the heck out of turning your neck to drive backwards. Your 90" Smyth unit looks pretty impressive. Amazing you can drive that fast with a 90" wide blower.

Regarding your earlier comments on not recommending a front mount snowblower with a front auger gearbox because they're just a glorified walk behind design, what is your reasoning on this? I think I might have mentioned, that I do like the side mount chain drive augers like your Smyth for the pure simplicity, and likely the only thing to break is the chain and not an expensive gear box. I see the weakness of the front auger gearbox being the brass bevel gear, which I've seen strip in a neighbors walk behind blower, and I've personally broken in half when I ate a garden hose unsuspectingly in my previous cheap MTD walk behind. I see the benefits in the RAD front gear box being that the bevel seems to be wider and so should be able to take more loading, but then again you're putting a lot more throughput through it than a 30" walk behind model too. So is the reason because of the brass gear? I'd imagine the mfg's don't use brass gears in the gear boxes behind the fan. What requires them to use brass in the auger front gear box?

Onwards to the RAD discussion. Scott Johnson was the same Kubota CA rep that emailed me as well. I thought that was a pretty good email you provided them. I called RAD headquarters today and did get a chance to speak to their technical service department. I explained my shear bolt issue, the fact that it was a Kubota, and the model. He confirmed about 3-4 years ago they updated the shear pin design due to shear bolt failure. Other than checking for slack chain tension behind the fan, there really isn't much else he noted that would cause this. He confirmed they don't sell the upgraded design as a parts kit that can be retrofitted. He looked up my model and told me I can get the parts through my Kubota dealer. But he said it does require a new auger gearbox....WHAT?! UGHHHHHH! Probably explains why your dentist friend paid the dealer $1500.

I spoke to my Dad again about his unit the other day. In case I didn't say it before, he says it mostly shears when he engages the PTO. With the machine off, if you try to move the fan by hand there is noticeable slop between the fan and shaft across the bolt. I believe spec is 9 ft-lbs on the bolt. He told me he tried putting a lot of torque on the bolt the last time he replaced it to try to lock the fan and shaft and eliminate that slop, and the last time he used it he actually went through the entire usage without a breakage. I hate to think this is the only solution other than shelling out another 50% of the cost of the unit for the proper fix.
 
   / Kubota GR2100 PTO Speed? #15  
I invite you to go to another thread on this forum started by a guy having problems with shear bolts on his blower.
It is up to 12 pages now.
He has the latest fan flange shaft flange shear bolt, Kubota is selling him the shear bolts in a labelled bag which indicates their shear bolt is grade 8 and the bolt head markings confirm this.
I am sorry I dont know the correct way to link you to this thread other than cutting below and pasting it into a new window to get there.
This photo of the start of the thread may be a way to find it. I am certain everyone would like to hear of your conversation with RAD. I am impressed they talked to you.
I think you are not seeing all this chatter because you are in the lawn and garden area of Kubota. Join in on this thread as you are involved with the same issues and can contribute!

euCdlkg.jpg


http://www.tractorbynet.com/forums/kubota-lawn-garden/373235-kubota-gr2100-pto-speed-new-post.html

Dave M7040
 

Tractor & Equipment Auctions

2017 Chevrolet Express Box Van, VIN # 1GB0GRFF9H1305955 (A51572)
2017 Chevrolet...
1972 Baker 30ft Pole S/A Towable Trailer (A51692)
1972 Baker 30ft...
2018 FREIGHTLINER CASCADIA TANDEM AXLE SLEEPER (A52577)
2018 FREIGHTLINER...
DOOSAN G25 GENERATOR (A52472)
DOOSAN G25...
JOHN DEERE 661R LOT NUMBER 106 (A53084)
JOHN DEERE 661R...
2013 MACK GU713 (INOPERABLE) (A52472)
2013 MACK GU713...
 
Top