broke down

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WEGUNTER
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Re: broke down

Post by WEGUNTER » Sat Dec 09, 2017 2:59 pm

OK................am I missing something here. Torque said his bike stared up fine, idled fine and motivated down the road for about 1/4 mile. If it was a broken rocker arm wouldn't that have been obvious during warm up?

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Re: broke down

Post by torque » Sat Dec 09, 2017 3:38 pm

WEGUNTER wrote:OK................am I missing something here. Torque said his bike stared up fine, idled fine and motivated down the road for about 1/4 mile. If it was a broken rocker arm wouldn't that have been obvious during warm up?
Jon said the break was very hard to see -- i.e. -- probably not COMPLETELY broken in half -- just cracked. In that case, I'm guessing that as throttle was added, (and it sputtered and coughed a few times), the stresses built enough to "bend" it at the crack enough to cause the failure.
2017 Triumph T100 w Velorex 563 hack
2013 Ural "T" (custom) (sold)
08 Linhai Aeolus 300 (sold)
09 Yamaha Majesty (traded)
in the mountains of southern West Virginia

"There are many paths from birth to the grave. They all work."

Donbmw
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Re: broke down

Post by Donbmw » Sat Dec 09, 2017 5:10 pm

Had the same thing happen to my 2015 Patrol. Started up fine, rode about 5 miles mph with couple stop lights. Setting and waiting for light to change. Idling just fine,took off had normal power and just fine performance for about fifteen feet then power loose. Had to have throttle almost wide open to keep running to get off the road. Trailer home and took to dealer since it was under warranty. Found intake rocker was broken. Had 5000K at the time. Now have 19000k since replacing arm
2015 Patrol, 1980 R65, 1982 R65 bought new, 1975 R 90/6, 1959TR3 Triumph

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Re: broke down

Post by gobium » Sat Dec 09, 2017 5:24 pm

I replaced a few rockers on 2012 and 13
Fortunately rockers are cheap and easy to repair
I knew it was the rocker, the way you described it

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Snakeoil
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Re: broke down

Post by Snakeoil » Sat Dec 09, 2017 10:05 pm

Velo hacks are very small. Make sure wife fits and is comfy.

You might consider a DMC, Spirit, Watsonian or similar fullsize hack. Velos were designed for 250-350 2-strokes.
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Rob
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VWK75S
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Re: broke down

Post by VWK75S » Tue Dec 12, 2017 6:42 am

torque wrote: Too many issues. (2 carbs replaced, clutch arm replaced, filter screen lost in gas tank, fuel lines replaced within a year of purchase, now needing it again, continual paint issues, and now a broken rocker.)
Now it will run forever without any problems :feelsgood:
John
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Re: broke down

Post by heindlengineeringural » Tue Dec 12, 2017 8:50 am

thumbnail (1).jpg
The bike is now an running order. We will be going through it from top to bottom and replacing the drive donut as well.
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chaos2
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Re: broke down

Post by chaos2 » Tue Dec 12, 2017 10:29 am

gobium wrote:I replaced a few rockers on 2012 and 13

Great. One more item to add to my UPS list (Ural Paranoia Syndrome) :lol: :lol:
past afflictions include TR motocars and bikes, R60/2 & a R65, MGs, and a Citroen.
Now a 2012 FF GU and an 87 K75s
dual K&N cones on PVC intake, 40/137.5
Raceway needles
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Re: broke down

Post by torque » Tue Dec 12, 2017 3:42 pm

Hey guys! Don't get me wrong! We LOVED our Ural, and if it weren't for certain handicaps which have arisen since we bought it, coupled with a very demanding work schedule, we'd probably have kept it. Jon and Dave up at Heindle's have been great to work with. and I would highly recommend them to anyone wanting a Ural. I was just not able to keep up with the demands of a carbed Ural, and the level of maintenance/repair it required. Not after these eye issues began.

Looking into a T100/Velorex rig. I'll still be lurking around the forum to see what's happening.
2017 Triumph T100 w Velorex 563 hack
2013 Ural "T" (custom) (sold)
08 Linhai Aeolus 300 (sold)
09 Yamaha Majesty (traded)
in the mountains of southern West Virginia

"There are many paths from birth to the grave. They all work."

WEGUNTER
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Re: broke down

Post by WEGUNTER » Tue Dec 12, 2017 3:50 pm

OK so color me stupid but I am still trying to figure out how a bike with a broken rocker arm would run fine at idle. Valves either open and close or they don't and they need a rocker arm to make that happen.

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Re: broke down

Post by Mr Wazzock » Tue Dec 12, 2017 4:18 pm

Arm is not broken into two pieces - has a crack so it's bent, or bending - so can open valve a bit. Enough so idle works OK, but won't pass more air (or exhaust gas whichever) for faster rpm's. I'm guessing.

I am reminded of the story I was told recently by my dealer, he had someone bring a Ural in for a look at because it wouldn't go faster than 40 mph, also made a terrible clattering noise.

Owner had misread or misinterpreted valve clearance value, set them to 4mm instead of 0.004 inches. :o Or something like that.

Amazingly only the pushrods were fooked.

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Mike H
2016 Ural cT, in glorious terracotta

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Re: broke down

Post by torque » Tue Dec 12, 2017 6:20 pm

WEGUNTER wrote:OK so color me stupid but I am still trying to figure out how a bike with a broken rocker arm would run fine at idle. Valves either open and close or they don't and they need a rocker arm to make that happen.
Actually, I'm guessing that the crack was there for some time. It still ran. Ran ok for 1/4 mile or so; but as it ran, I'm guessing that the arm bent more and more due to the crack until it finally began backfiring and blew the carb off.
2017 Triumph T100 w Velorex 563 hack
2013 Ural "T" (custom) (sold)
08 Linhai Aeolus 300 (sold)
09 Yamaha Majesty (traded)
in the mountains of southern West Virginia

"There are many paths from birth to the grave. They all work."

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