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what he means is belts are produced with sloppy tolerances with relatively large differences in dimensions from one belt to another of the same part #
 

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So why are we not having this problem on the 05 and 06 XP? We run the same belts. I have been running the SP belt for quite a while with 0 issues. I am not convinced this is a problem.
 

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It sounds like he is saying that the erratic sizing of the belts is causing the motor mounts to break. I'm just saying we are all running the same belts, but only the 07's and a few of the latest 06's are having this issue. If the belts were causing this all the Rangers would be having the same problem.
 

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All i can say i know for a fact the belt that came on my 07 xp measured 41.250 o.d. and when i bought a new belt i measured it and it was 41.500 long, you say a 1/4 doesn't make that big of a difference it does when it comes to rpms and top speed 150 rpms diff. and 3 to 4 mph top end. If a person isn't trying to get all you can get from his machine than you might not ever notice the diff.
 

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Alnash, you are right, that makes a huge difference,one that can easily be adjusted out with the proper secondary clutch.Polaris makes these parts and intends them to "work reasonably well in all conditions". Availability of a "close tolerance",(like are available for sleds) belt would cure these problems. I would like to see some measurements from the SP belt to see if they are made using the same sloppy tolerances, also, how about width measurements on both belts? Scotty
 

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Discussion Starter · #8 ·
Well, I don't belive that a manufacturing plant that makes the belts will have that much of a length diffrent 1/4", if you see the SP belt close you will note that it has small lines or groves it will have to add more line or groves to make it bigger that will mean a diffrent mole or gig and if I had this coming out of my production plant someone will not be working for me tomorrow.
 

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You have to remember that this is circumference measurement and a 1/4 inch isn't much. If you are making a belt and say holding a + or - .005 tolerance between centerlines and you cal that to circumferance and it adds up, with that belt going from -.005 to a plus .005 centerline you are looking at close to a 1/4". Anything that is molded as rubber or fiberglass or plastics will change from part to part.
 

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Discussion Starter · #10 ·
Al, sorry but I don't buy that we design building and have steel col's and steel beam that are built at the steel shop and place at the job site by hand and any help from heavy equipment, well we can not be off by 1/64" or it will not fit, now you are tring to tell me that some belt that is design by computer and built by a computer or off by 1/4" sorry no deal here ;-)
 

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Its a fact take a pie tape and go to your Polaris dealer and take out 5 brand new belts and measure ea. one, if theres not a diff. i will buy you lunch. Hows that!
 

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[:)] I can taste that Steak now[:D] LOL
 

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Discussion Starter · #14 ·
Big Steak Yea, and you going to need to come CA to cook it ;-)
 

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Steak for lunch sounds great, I have been working on rangers since the first 99 500 6x6 rolled of the assembly line, and we have not had any issues regarding belts. There has been a problem since day one regarding belts on the 700 xp. If polaris would throw away that dog dish of a secondary clutch that looks like it came off a 1969 scorpion snowmobile they would solve alot of problems. You cant expect a spring to maintain your belt deflection. If you look in the ranger service manual it tells you how to adjust the belt deflection which does not apply to the rangers. Blame it on the suit and tie guy cutting and pasting manuals together. Some of you that may have service manuals can turn to page 6.7 it states that the belt deflection should be set at 1 1/8 to 1 1/4 For proper clutch operation. Just trying to help you guys out, I dont put up these post for no reason, heck I would rather be riding. Put the power to the ground! THanks Dale!
 

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Discussion Starter · #17 ·
Al, looking forward to my STEAK id Dale wants to help you it's ok with me LOL ;-)
Well as you can see I got in contact with a Drive Belt manufacturing company and guess, well you know that thay do a +/- toerance of about 1/16" not a 1/4", so I like my STEAK WELL DONE thanks LOL ;-)

They should be the same, but +/- the given tolerance (which is generally +/-.093")

-----Original Message-----
From: Frank [mailto:[email protected]]
Sent: Thursday, April 19, 2007 1:21 PM
To: [email protected]
Subject: Re: Pyramid Inc. Contact Form

If you but 2 new belts of the same part number or identical belts are they
the same length or is one longer (new ones out of the box)
Sincerely,
Frank Rodriguez,
----- Original Message -----
From: "Pyramid Inc." <[email protected]>
To: "'Frank'" <[email protected]>
Sent: Thursday, April 19, 2007 10:10 AM
Subject: RE: Pyramid Inc. Contact Form


Hello Frank,

I will attempt to answer your question:
When you purchase a new belt at a specific length; it is stretched onto your
application. The belt will lose approximately 50% of the initial tension
within the first 48 hours of installation. The belt will never return to the
original length; it will be longer. For example, if you apply 10% stretch to
a belt, you will end up with a belt that is approximately 5% longer.

I think the difference you are questioning is that of an unused belt vs. a
used belt. You will always need to factor in the loss of tension when
replacing a used belt.

I hope this makes sense. Let me know if you need further information - I
will do my best to answer your questions.

Best regards,

Todd

-----Original Message-----
From: Frank [mailto:[email protected]]
Sent: Thursday, April 19, 2007 8:22 AM
To: [email protected]
Subject: Re: Pyramid Inc. Contact Form

Thanks for your reply;
If you have a belt that you made and has a specified length and this belt
has a part number
now when you make another belt that will have the same specified length and
has the same part number as the first one does this belt end up longer or
shorter as the first one.

Sincerely,
Frank Rodriguez


----- Original Message -----
From: "Pyramid Inc." <[email protected]>
To: <[email protected]>
Sent: Thursday, April 19, 2007 6:11 AM
Subject: RE: Pyramid Inc. Contact Form


Hello Frank,

I do not understand your question; can you rephrase? Feel free to call me if
you prefer.

I look forward to your reply.

Best regards,

Todd A. Brown
Pyramid Inc.
Sales and Marketing
Phone: 641-792-2405
Fax: 641-792-2478
Email: [email protected]


-----Original Message-----
From: [email protected] [mailto:[email protected]]
Sent: Wednesday, April 18, 2007 11:51 AM
To: [email protected]; [email protected]
Subject: Pyramid Inc. Contact Form


Pyramid Incorporated Contact Form
---------------------------------
Name: Frank
Email: [email protected]
Phone/Fax: 760.485.9583
Preferred Contact Time: 8 to 5 pt
Preferred Contact Method: email
Notes: If you have a belt part number and has a specific length to it, do
all the belts that have the same part number end up with different lengths.

Sincerely,

Frank Rodriguez
 

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Im not conceding yet i went to the dealer and my old belt i took off was 41.250 long o.d. and it probally stretched. The new belt never put on the Rangher right out of the box was 41.500 both polaris belts.Go to your dealer and measure for yourself it could be i got that one bad belt ,but it was for sure 41.500 ive been a machinist for 30 yrs and i will certify that measurement. Also if tolerance is plus or minus 1/16 thats a total of 1/8"that make alot of diff. on belt deflection.(don't sniff the steak yet) LOL's. P.S. it might not be a bad trip to CA.
 

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If you have 40" lets say - 1/16 is 39 15/16 and + 1/16 is 40 1/16 the diff. is 1/8
 
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