Snow Equipment Owning/Operating Trygg chains installation

[LouNY]

LouNY, if you look at the first pic in his original post you will see that these chains are "SMT" chains, not SMT Flexi. Trygg makes 3 different versions of the SMT chain 1) "SMT" fits specific tire size without needing adjusments, 2) "SMT Flexi" that fit several tires sizes and can be adjusted without tools and 3) "SMT Combo" fits several tire sizes. Here is a link to the chains the OP has.
TRYGG Kjetting

You are correct I didn't look up that part number on TRYGG's site, did just now.

 

[LouNY]

Just looked up a Massey 1740m,
if tractor data is correct that tractor doesn't have 14.9-24's;

Standard tires (ag): Front: 8-16. Rear: 12.4x24
Optional tires (ag): Front: 8-16. Rear: 13.6x24
Lawn/turf front: 27x8.50-15
Lawn/turf rear: 41x14.00-20
Industrial front: 10-16.5
Industrial rear: 17.5L-24
Industrial front: 25x8.5-14
Industrial rear: 15x19.5

I don't know what tire he has,
an R1 12.4-24 could take a 603910 TRYGG SMT Flexi 9,5mm or a few other models,
while an R1 13.6-24 could use a 603521 TRYGG SMT 9,5mm or the 603910 TRYGG SMT Flexi 9,5mm or 9 others they offer.

 

[FrankJG]

I have the R4-1 industrial 14.9x24. I'm pretty sure I got the Trygg standard SMT too since I don't have that easy removable chain link like in the "Flexi" that I saw in your link.

Dealer mechanic will come this week to fix 2 leaky fittings on my blower chute lines. I will ask to take a look at the chains to know what he thinks about it.

 

[Hilbilly]

Here is a link to the TRYGG website showing your tire size and the exact chains you have. Those are supposed to fit 14.9 x 24 tires without modifications. It appears you either have the wrong chains in the crate or your tire size is different. TRYGG Kjetting

I got some SMT chains for my 17.5l x 24 tires and they did not fit. Not even close but I expected that since there is no SMT part number for my tire size. I ended up modifying them but it involved more than just cutting some sections out. I also had to do some welding to get them to work. Here is a link to a thread I had going about this. See the last post where I have some pics. https://www.tractorbynet.com/forums/snow-removal/417530-chains-17-5l-x-24-a-2.html

 

[FrankJG]

Thanks Hilbilly, I see in your pics exactly what I was thinking to do since only cutting the extra studded section would involve loosing those unstudded chain links that connect to side chain with shackle, so I would need to weld those further down. Thats what I'm gonna do if they can't get me the right size. Are you still happy with your Trygg chains ? Are they smooth riding at road speed ≈ 20-25 kph ? I have about 8 km to travel everytime I'm out doing my driveways (Gravel road)

 

[FrankJG]

I have those R4/R1 hybrid tire I'm wondering if the chains were meant to be used on R1, the difference in lug depth would easily add some circumference length to the tire.

 

[Hilbilly]

I haven't had a chance to use the chains yet. Still waiting for some snow but I expect they will perform very well and ride MUCH better than the chains I used previously.

 

[CADplans]

I have those R4/R1 hybrid tire I'm wondering if the chains were meant to be used on R1, the difference in lug depth would easily add some circumference length to the tire.

Most manufacturers specify a rolling circumference (or some such number) for each tire,,
maybe you can look up the R1 and R4 tires, and see if the rolling circumference is different,,,

 

[Dave M7040]

I went through the too long chains on my new 2012 M7040.

I bought perfect fit TRYGG chains which were too long.

After contacting Trygg Norway, they had me measure the tire diameter.

Turns out the cheap tires Kubota supplied were 3" shorter in diameter than the Tire and Rim Association spec. This meant 9"+ too long.

Thought I was screwed. To their everlasting credit, Trygg had their Canadian Distributor in Quebec modify the chains to fit my tires at no cost.

I had to arrange shipping. When the chains came back they fit perfectly.

Here is the contact info and since you live in Quebec I suggest you contact them.



Hi David

We took off one section. Hope it will fit properly

Thank you


H鬧倬茜e Filion,
Directrice g鬧*鬧ｻale
CHAINE SELECT INC.
Tel: 1-888-478-2426 ou 1-819-478-2425
Fax: 1-819-478-1187
helene@chaineselect.ca

Accueil - Chaine Select


I have attached a page from the Tire and Rim association handbook. Suggest you compare your tires' diameter with the spec.

Dave M7040

 

[FrankJG]

Thank you Dave ! Really helpful ! The dealer is coming tomorrow if they can't do nothing for me Ill go the route you went through. My tire size is not on the page of tire and rims association you posted and I couldnt find it on the web. They charge 100ish $$ on their website to get the handbook.

 

[Dave M7040]

Thank you Dave ! Really helpful ! The dealer is coming tomorrow if they can't do nothing for me Ill go the route you went through. My tire size is not on the page of tire and rims association you posted and I couldnt find it on the web. They charge 100ish $$ on their website to get the handbook.

I have attached the Tire and Rim page for radial tires. Comparing a bias ply and a radial the dimensions are very close.

Don't let the dealer start cutting the chains. They will make them a big problem as far as ride quality is concerned as the chain pattern needs to be uniform diamond shapes around the tire.

Dave M7040

 

[radios1]

I have attached the Tire and Rim page for radial tires. Comparing a bias ply and a radial the dimensions are very close.

Don't let the dealer start cutting the chains. They will make them a big problem as far as ride quality is concerned as the chain pattern needs to be uniform diamond shapes around the tire.

Dave M7040

how many G's at 20 MPH would be encountered by cutting the chains?..

 

[Dave M7040]

how many G's at 20 MPH would be encountered by cutting the chains?..

I have attached a picture of my too long chains on my tractor before they were altered by Chain Select.

The affect in ride quality on pavement was very noticeable and objectionable.

Each rear tire would be out of sync with its other rear mate setting up a sort of harmonic motion in the cab.

The chain material of the TRYGG chains is far harder than previous chains I have had. These could not be cut with 3' long bolt cutters.

Cutting a link with an angle grinder was a slow process. I still have the jacket I set on tire trying to make alterations.

Dave M7040

 

[radios1]

I have attached a picture of my too long chains on my tractor before they were altered by Chain Select.

The affect in ride quality on pavement was very noticeable and objectionable.

Each rear tire would be out of sync with its other rear mate setting up a sort of harmonic motion in the cab.

The chain material of the TRYGG chains is far harder than previous chains I have had. These could not be cut with 3' long bolt cutters.

Cutting a link with an angle grinder was a slow process. I still have the jacket I set on tire trying to make alterations.

Dave M7040

maybe cut one link from each diamond to make it even?. I have never had any problem cutting even tool steel with an angle grinder, perhaps you had inferior quality cutting wheels?. and oh yea, wear a leather welding apron to prevent setting your clothes on fire!. it can also save you if the wheel breaks, and flies toward your body, nasty stuff!..

 

[Hilbilly]

I agree with Dave about the quality / hardness of these Trygg's. I had to heat them to red hot to get my specialty chain tool to open the side link hooks. Without the super heat treatment there was no way I could get them to open up. But I had no problems cutting the links with an angle grinder and a cutting wheel.

I can see what Dave is saying about the chains being out of sync (the way his ended up) and causing an out of balance harmonic resolution to vibrate through the tractor, if running at high speed and on a hard surface. Not sure if it would be a problem at lower speeds, in snow and on a gravel driveway. Dave; under what conditions were you experiencing these issues?

I might have been lucky when I altered mine because the chains ended up with identical patterns around the tire circumference. I probably spent more time looking at how the chains were assembled and how I could alter them (and end up with a correct finished pattern) than I did actually making the alterations. For the money I spent on these chains, there was no way I wanted to even start altering them without having a lot of confidence that the end result would be satisfactory.

I would let the dealer make the changes to the chains, as long as they understood that if the end product was not satisfactory, they would take them back and give you a full refund. I doubt they would take on that risk though.

As I see it you have 3 options; 1) let the dealer make alterations at his risk, 2) if you have the equipment and confidence, make the alterations your self, or 3) return them, contact Trygg and get a different set of chains.

Good luck and let us know how you make out.

 

[FrankJG]

Finally I didnt like the way the dealer wants to cut my chains as it would result in an uneven diamond pattern like Dave pointed out. So since I have all the tools needed
and being a decent welder I'll take some times this weekend to make these chains fit. I will post some pics after I'm done.

With temperature rising this week and the next one sure don't want to get caught in an ice storm with my slippery R4's

 

[FrankJG]

Si I finally got times to fix shorten my chains.
I cut the extra section there:



Chains end there:


Welded those together


Thats what it looks like after install :



Looks alot like what Hilbilly did with his chains.

Was tough to make a pretty weld around these twisted links. Whats suprised me its the ride is alot smoother at road speed (25 Km/h) barely feeling them than going at slow "working" speed where they shake the tractor, was expecting the opposite. I never tire chains before with my older tractor.

Thanks everyone for helping me on that one.

 

[Hilbilly]

Great news but the attachments don't show up as valid.

I'm very surprised by your comment about the chains being rough riding at working speeds but not at road speeds. I haven't tried mine out yet but hope I don't experience the same thing.

 

[FrankJG]

Its kind of like a slow steady side to side shake, as I speed up the chains seems to fall into their sweet spot on tire and I dont even feel them except for the added little chains ringing noise. Being new to this type of chains don't know if thats just normal.

 

[LouNY]

I find a small amount of vibration at low speed when the ground is froze real hard,
it goes away about 5 mph for me.