| Author |
Message |
Darrell (64.162.10.93)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, December 11, 2001 - 11:58 pm: | |
I have chains that I can't get mounted. Tire size = 12R 22.5.
Does anybody know how to tell what size chains I have?
Chain width: 15"
Chain length : 108" (measured the longest side of the chains)
Darrell |
Gene R. (12.13.175.99)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, December 12, 2001 - 8:54 am: | |
Can't help with chain sizes but thought some would like to hear this. I just bought a F450 Super Duty Ford rolled over ambulance to use the running gear and chassis under my 55 Mack dually I,m building. On each of the rear spring mounts there is an air cyl with a arm and a 8 inch wheel and 6 chains about one foot long attached. When you hit the button, air pressure sends the arm down to almost road level and presses the wheel with the chains attached against the inside dual and the friction causes the small wheel to turn and throw the chains under the inside dual tire. Instant chains. Just before stopping, simply push the button and the arm retracts to pull chains up out of the way. Some of you may have seen this before. I have seen trucks with chains hanging underneath and wondered why someone would carry their chains so far under the vechicle. Now I know what was under there. If anyone is intrested in contacting the company, I will get an address when I get the frame back from the frame shop. Don,t know if they make them for large units but they are a good idea. FWIW, Gene R |
Bill Butler (64.158.121.252)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, December 12, 2001 - 10:54 am: | |
GENE F: VERY INTERESTING. I HAVE ALSO NOTICED THE HANGING CHAINS. HOW CLEVER. |
Scott Whitney (24.205.234.189)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, December 12, 2001 - 12:39 pm: | |
Check out this link for the automatic snow chains.
http://www.onspot.com/
Scott |
Bill K (209.173.120.49)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, December 12, 2001 - 6:35 pm: | |
I made a post on this type of chains about two
weeks ago on the other board under Automatic chains. They use them a lot on school buses. |
Dale Leyten (216.23.152.10)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, December 13, 2001 - 2:10 pm: | |
according to my tire chain book. to fit 12r22.5 you need width 19.57" length 108.02 if triple. if dual 30.70 width 98.38 long |
Jim Shepherd (206.175.230.42)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, December 13, 2001 - 7:06 pm: | |
I put a set of the Onspot chains on my class 7 truck/motorhome. Never did get a chance to use them. However, they are DOT approved on up to and including class 7 trucks )ie, they can be used when the "chain law" is in effect.
I talked to alot of folks who use them and they all say that they do a pretty darn good job. At least one school bus system in the mountains of Colorado (Park County) uses them, so they must work pretty good. Many fire and ambulance services use them around the CO front range.
I have removed them from the truck as I get ready to sell it. Tried to see how they could fit on my '85 Eagle, but doesn't look like it would be easy to adapt. Will be putting them on ebay in the next few days.
Jim Shepherd
Evergreen, CO
'85 Eagle
beltguy.com |
Darrell (64.162.11.169)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, December 14, 2001 - 12:33 am: | |
Dale Leyton:
What do you mean when you said the chain size is for "triple". I am putting one chain on each outside dual. Thanks for the response.
Darrell |
Dale Leyten (216.23.152.10)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, December 14, 2001 - 2:22 pm: | |
Triples have one chain on outside of duals. one between duals, and one inside of duals - hence triple. Duals use one long cross chain to bridge between inside of inside dual and outside of outside dual. If this cross chain ever breaks, lots of fun things happen as this is fairly long even if it breaks in the middle, and tears off brake lines, wheel well moulding, and any dogs chasing ur rig. |
Scott Whitney (24.205.234.189)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, December 14, 2001 - 6:35 pm: | |
Yikes, I thought outside duals was all that was required.
Scott |
Dale Leyten (216.23.152.10)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, December 15, 2001 - 1:41 pm: | |
Depends. I have lived and driven in snow all my life, both cars and tractor-trailers, and most times technique will get you through most slippery conditions. Steep grades that can't be run do require chains however. I have not had much to do with just chaining up single's as when you want chains u want lots of 'em, and I would hate to get 1/2 way up, spin out, and then need to put on extra set. I have found that it is not too much trouble to install/remove once you have had some practice. Try it first time on a nice warm day, on a nice surface, and you will find the experience relatively painless. Make sure they are on tight - no flopping. Use bungee cords or a commercial chain tightener - basically a big rubber band with hooks attached. |
Steve Fessenden (63.27.88.165)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, December 18, 2001 - 12:09 pm: | |
In British Columbia I was told that the logging trucks used to need chains but now they lift one set of tires on the tractor to to increase traction on the drive wheels so they can climb icey hills.
Prevosts can lift the tags for tight turns and that would also throw more weight on the drive wheels for better traction.
Should be able to modify an MCI or Eagle to do the same. Just need a way to depressurize the tag airbags similar to a manual leveling system.
Are there any Prevost drivers who have experience with this. I live in Florida, so not much snow.
Steve Fessenden |
Scott Whitney (24.205.234.189)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, December 18, 2001 - 12:44 pm: | |
I learned recently that the GMC 4905s also came with an optional rectractable tag. I can see how taking a couple wheels out of the equation would help with drive traction, but seems like you would lose control traction when it came to braking and cornering as the trade-off.
Scott |
DrivingMissLazy (65.207.109.97)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, December 18, 2001 - 2:15 pm: | |
Steve, I would really have trouble modifying my Eagle to lift the bogie. No air bags, just torsolastic suspension.
Scott, The extra weight on the drive axle would help with braking or cornering while travelling on snow or ice.
Richard |
Peter Broadribb (Madbrit) (216.67.211.202)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, December 18, 2001 - 3:46 pm: | |
Steve,
my MC-8 has an air release on the tag which does not actually lift the axle, but it removes the pressure. This puts more weight on the drive axle to get more traction in inclement weather situations. Also, it saves on scrubbing the tag tires, straining suspension bushes and damaging the black top when making slow tight turns into driveways, etc.
Peter. |
Gene LeMeur (208.187.132.132)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, December 20, 2001 - 4:50 pm: | |
You will find chains for 100-24.5 and 120022.5 will be the same size you may also look at 100.20 all three tires are the same size |
G LeMeur (208.187.132.132)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, December 20, 2001 - 4:53 pm: | |
That should read 1100.24.5 and 1100.20 These are the same size as 1200.22.5 |
RJ Long (24.127.8.58)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, December 20, 2001 - 5:23 pm: | |
Couple of notes:
Normally, you only have to chain the outside rear dual of the coach's drive axle. Virtually impossible to chain the inner dual.
Most HD truck parts houses can provide the correct size chains for your tires. Remember, all you need is a "single". . .
Greyhound's got some of the best chains I've ever seen - cam/lock tensioners - but I have no clue where they get them. (And boy, you should see how quickly the drivers who work the schedules on I-80 between Sacramento and Reno can chain a bus!!) Maybe the corporate office in Dallas would know the source. . .
IMHE, I found having the chains "ready to go" in the back bay made it a lot easier when the time came to throw them on.
HTH,
RJ
PD4106-2784
Fresno CA |