Author Topic: belt drive  (Read 8532 times)

Offline wytfut

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belt drive
« on: December 24, 2016, 10:00:39 AM »
Here's a bit to ponder on belts....

I'm no expert, but have heard that they can in theory run up to 100k.... I'm doubtful, but its an interesting idea. I've had others tell me to start looking at 30k

Dennis Bennet's DWS, belt has a hole in it from a rock.....    with no issues. Road it to the last 2 cannonballs with no problems... all of this on a 35k bike.

Mike Degrood road his new to him G/O all the way from NebraXi to Minnesota to California with no issues, and then it split on him at a stop lite one day....   Low milage too.... I believe Mike said he found evidence of a hole from a rock..

Jeff Brown Tribute X.... lost his in a parking lot of Dodge city....   prettsy sure Jeff's is around 10k.  Jeffs shows no evidence of rock damage....

I bent the rear sprocket of 525 many years ago, due to rocks making the trip around the sprocket under the belt.....   I've looked several times at my belt, and it looks good. Early in ownership, I took the lower "rock gaurd" off of 525, as it was annoying.... kept rubbing, making noises. sometimes by myself, sometimes with passenger.. I'd sand, cut, move.... just took it off.

the new replacement belt Jamie recommends.... is obviously a HD belt... but it appears at least here, its an aftermarket belt even though it was ordered at the local HD shop. No HD logos anywhere...  I like it. Another plus for us OCD guys...    it completely fills the sprocket side to side..

comments? .... just curious

Bruce

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Offline Jimtom34

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Re: belt drive
« Reply #1 on: December 27, 2016, 01:57:30 PM »
The belt on my 2008 Victory Vision is original and has 148,000 miles on it.

Offline blackheart

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Re: belt drive
« Reply #2 on: December 29, 2016, 09:29:37 PM »
These belts do last 100k on a HD, I had an 08 FLTR with 100k and it was the thinner belt at approximately 13/16" wide.  No signs of distress.  Victory has similar life.  Both run the belts with proper tension, not loose as a goose slapping around due to a shaking power train relative to the axle on rear.

So I think the short belt life goes back to the improper, i.e. highly variable, load the shaking power train puts on this drive belt. 

Belt life can also be caused by improper handling of the belt.  Any gates design manual or the HD service manual illustrateso how not to bend & twist these belts.

It's too bad they didn't counterbalance these engines and rigid mount them.
S/N 0307, 14th X assembled factory demonstrator

Offline 2CoolWheels

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Re: belt drive
« Reply #3 on: January 04, 2017, 04:51:16 PM »
Bruce is right, my belt broke about a week after arriving home from our trip back in 2012. The bike had less than 8000 miles on it, and the belt was fairly loose as recommended. I strongly suspect it was a manufacturing defect. The same bike has since accrued an additional 28,000 miles on the new belt. And I'm running it a little tighter than the original....go figure!

Offline Jumper

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Re: belt drive
« Reply #4 on: January 07, 2017, 03:40:25 PM »
Belts are tricky sometimes... Just SNAP! for no reason...
Jumper

Offline franknsr

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Re: belt drive
« Reply #5 on: January 11, 2017, 10:08:46 PM »
Hmmm.. there is a HD belt that firs our bikes?

Offline wytfut

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Re: belt drive
« Reply #6 on: January 12, 2017, 06:25:04 AM »
Yes  sir!
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Offline briz

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Re: belt drive
« Reply #7 on: April 09, 2017, 09:14:35 AM »
Just had the rear wheel out of mine to change the tyre. Counted belt teeth - 139T.
Same as 97-03 HD touring models.
HD part number 40024-97

Offline Jumper

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Re: belt drive
« Reply #8 on: May 06, 2017, 05:02:11 PM »
Always good to know!
Jumper ;D

Offline rt66john

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Re: belt drive
« Reply #9 on: September 15, 2017, 03:32:03 PM »
The belt on #2016 snapped at the end of my driveway two days ago.  The bike has just shy of 18,000 miles.

Marty says they have no more factory belts; she recommended HD p/n 40130-03.  A quick search of the interwebs says that's now p/n 40130-03A and it's a high load belt meant for sidecar applications.

Offline Jumper

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Re: belt drive
« Reply #10 on: September 17, 2017, 03:33:22 PM »
Got a few of both numbers on E-Bay...
Jumper

Offline larryb8415

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Re: belt drive
« Reply #11 on: June 04, 2025, 05:11:50 PM »
This is a VERY old thread, but I'm going to pull it anyway.

I have the 'chirping' problem as well.  I've checked the tension, seems to be set correctly, I've checked the alignment, that also seems ok... though from inspection to inspection, it travels a bit on the rear sprocket.  Not only on speed up and slow down, but also under load at steady speed I can hear it.

All this being said, I believe this is the same belt that came with the bike when I bought it back in the summer of '99 (or the late 1900's as my kids would say).  So it very well could just be old... BUT here is my question:

Is there anything else I should check? AND What is the consensus about spraying silicone lubricant on the belt? 

Offline wytfut

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Re: belt drive
« Reply #12 on: June 06, 2025, 08:57:37 AM »
Nothing wrong with bringing an old thread a new breath of fresh air. This topic I'm sure will come up again, just like all the oldies from the beginning.

With my "chirping" belt, for a long time, I could put a dab of silicon grease on it, and it'd quit chirping for a few hundred miles. My belt I think was unusual, as where all the kevlar string met/seam, the belt had a tad bit "S" shaped. Every round that belt would make it would chirp there.

Humorous side note: my belt chirpped so bad, that when I'd ride in a group, barn swallows would come out of nowhere and dive bomb me going down the highway. Every one in the group would see it and comment....   weird

I couldn't stand it no more, and ended up replacing my belt with the HD belt, and I haven't had any issue since.

When tightening belts on X's, I start usually too loose (so much so it'll jump sprocket), and I go back to shop and tweek it tighter.  Until it doesn't jump. I know there are folks that will comment that its too loose this way. But this works for me.
Religiously from the beginning, I was using the clothes hanger trick to measure alignment from the swing arm bushing. Phil Marks (Pa), told me just roll that rear tire on my lift and see if it walks one way or the other. Roll the tire forwards and backwards and see if it walks one side or the other. Adjust accordingly.
I didn't realize that each X out there maybe just a little bit different, especially trying to align belt.... What Phil said made sense, and its not how'd I do it.
Another great idea that Phil came up with was.... "if it chirps, try turning the belt around". He had one that was a chirper, ... turned it around, chirping was gone.

So there's a couple of ideas to try.... Belts are expensive, but the chirping really does get old. Funny how some will just drive you crazy, and other X's nothing.

Bruce
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Offline larryb8415

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Re: belt drive
« Reply #13 on: August 06, 2025, 04:01:54 PM »
I'm sure it's very loose, I'm going to tighten it a bit.  (I've been living with it since my post.) In any case, here are my next questions: 1:when loosening the rear axel, do I only open on the castle nut?  2 before I go buy a whole set... is the castle nut 1 5/16 or 1 3/8?

Offline wytfut

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Re: belt drive
« Reply #14 on: August 07, 2025, 09:28:40 AM »
Loosening the castle nut will loosen the complete axle to adjust belt.
Factory, that axle bolt comes in from the muffler side, which in turn makes the mechanic pull the upper muffler, to get that axle bolt out. So remember when you reinstall that axle, put it back in opposite of OEM.... from the left side.
I'll wander out to the shop, and see what that wrench size is....   

Castle nut is 1 1/4". And believe it... the axle bolt head is different 1 5/16". I knew they were different, just couldn't remember sizes.
Good luck...
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