Belt snapped
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From: Honah Lee
You saying when the Harley was bought out from the Brunswick company in 81, none of their last years Sportster models were belt drive?
I was almost positive his tank had AMF right below Harley. But I also thought it was in the 1990es which is 10 years after the buy out.
Going to text him and ask.
Last edited by Jackie Paper; Aug 1, 2022 at 08:10 AM.
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Joined: Aug 2018
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From: Milwaukee, WI
1990 was the last year of 4 speeds and Chain drives on Sportys, 91 they went to belts and 5 speeds.
I have broke a belt on both a Sporty and a BT, but the belts where not new and I had abused it on modified engines with wheelies, burn outs and just to much shock load dumping the clutch.
The belts are plenty strong so unless, so even being a hooligan, belts take a lot of abuse, its probably not aligned correctly especially if you have a stock HP engine.
I have broke a belt on both a Sporty and a BT, but the belts where not new and I had abused it on modified engines with wheelies, burn outs and just to much shock load dumping the clutch.
The belts are plenty strong so unless, so even being a hooligan, belts take a lot of abuse, its probably not aligned correctly especially if you have a stock HP engine.
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John
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6th Gear
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From: Kentuchy
[QUOTE=John Harper;20747132]I think belts are good for at least 50K miles. Pilot error is indicated. Make sure belt is aligned and tensioned properly.
What did the old belts look like at the breaking point? Rock damage, or any obivious issues?
What exactly do you mean by "replaced the bottom end?"
John[/QUOTE
So its a long story. The just of it is bike has 66k. At 50k I installed S&S 1200 top end. This spring I finished upgrades with cams, dynatek ign, super E carb. Then the rod on front cyl started slapping. So I bought a engine and swapped bottom ends. Bout 1k the og belt broke at around 64k. Got a HD replacement and got 1k out of it. Sittin at stop light put in gear when first one snapped. Downshifting to turn of highway with second. The front pulley came with the bottom end I bought. The rear is og to bike!
What did the old belts look like at the breaking point? Rock damage, or any obivious issues?
What exactly do you mean by "replaced the bottom end?"
John[/QUOTE
So its a long story. The just of it is bike has 66k. At 50k I installed S&S 1200 top end. This spring I finished upgrades with cams, dynatek ign, super E carb. Then the rod on front cyl started slapping. So I bought a engine and swapped bottom ends. Bout 1k the og belt broke at around 64k. Got a HD replacement and got 1k out of it. Sittin at stop light put in gear when first one snapped. Downshifting to turn of highway with second. The front pulley came with the bottom end I bought. The rear is og to bike!
Last edited by Oldbluesporty; Aug 1, 2022 at 09:28 AM.
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6th Gear
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From: Kentuchy
I ride aggressively but no stunts! Im thinking it could be a pulley issue the front isnt original to bike.
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Joined: Jul 2014
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From: Cental, MI
You saying when the Harley was bought out from the Brunswick company in 81, none of their last years Sportster models were belt drive?
I was almost positive his tank had AMF right below Harley. But I also thought it was in the 1990es which is 10 years after the buy out.
Going to text him and ask.
I was almost positive his tank had AMF right below Harley. But I also thought it was in the 1990es which is 10 years after the buy out.
Going to text him and ask.
Hard to imagine the "Wizz Kids" that bought Harley produced anything the same year or 5, that AMF hadnt Engineered...
Imagine the time required, from "engineered" to production...
All the "WizzKids" accomplished in the '80's was to Drop Nova!!!!!
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From: Long Island, New York
First Sportster with a rear belt was the 1991 XLH 1200, the 883 still had a chain. No belts on Sportys before then.
Something is wrong with your pulleys or their alignment. Belts do not break under normal riding conditions without outside influence. Good luck.
Something is wrong with your pulleys or their alignment. Belts do not break under normal riding conditions without outside influence. Good luck.
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