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Offline RLEMON5

LOUD TRANSMISSION, I THINK
« on: August 22, 2018, 03:59:04 pm »
I have had my 2015 Uforce 800 for about 2-1/2 years, the transmission gets really screechy at higher speeds pretty much unbearable, any suggestions on how to quiet it down?
It also screeches when you decelerate.

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Offline NMKawierider

Re: LOUD TRANSMISSION, I THINK
« Reply #1 on: August 22, 2018, 05:08:03 pm »
I have had my 2015 Uforce 800 for about 2-1/2 years, the transmission gets really screechy at higher speeds pretty much unbearable, any suggestions on how to quiet it down?
It also screeches when you decelerate.

More often that noise is drive train...and usually it's the rear gearcase or as some call it- "rear diff"...although there are no axle speed differentiating gear sets in it like the front. Mine is slowly grinding it way to the junk yard with aluminum case particles building up in the oil making me change it every 300 miles or so. It's also getting more and more backlash or play on the pinion shaft..making more and more clunking on excell and decells. And yes..the whining is getting louder too. One day..it will go.. I would love to go with someone else's unit but the front and back gear ratios must match so..I'm stuck with getting another one.

If not already try going with a full synthetic 80/90w gear lube in it and a 70/80w in the front.     

Don't get me wrong...it may well be the transmission..heaven knows they all loose as hell with something less then premium parts. Make sure you are running a premium-grade motorcycle oil cause shared-sump engines are hard on average oil. It had to be a high RPM, high temp gasoline engine oil AND, be a damn good gear lube as well at those high temps. Some oils.. just fall short. When I switched to Castrol Power RS there was a noticeable difference in noise and easier shifting so I know it was lubing better then what it had before.
« Last Edit: August 22, 2018, 05:19:06 pm by NMKawierider »
2015 Z Force 800 (53") EPS -
Custom Air Intakes | Custom Exhaust Mod | SuperATV Harness | Custom Fenders | Custom Skid/Rock Sliders | 27" GBC Grim Reapers | Seizmik Mirrors |Конструктор (Rodin's) Doors | Dr Pulley Sliders | 1.5" Wheel Spacers | BENZ Silencer (as needed) | SATV Flip Windshield W\ Rear Shield | Dual Light Bars | Diamond Plate Storage | Magellan TRX7 GPS| Bandit Springs

My Videos On YouTube

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Offline REDRIDER

Re: LOUD TRANSMISSION, I THINK
« Reply #2 on: August 29, 2018, 07:00:40 am »
NMK why not try 75-140 gear lube in the back if its getting worn out and has play? Thicker might help in your situation.

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Offline NMKawierider

Re: LOUD TRANSMISSION, I THINK
« Reply #3 on: August 29, 2018, 08:31:58 am »
NMK why not try 75-140 gear lube in the back if its getting worn out and has play? Thicker might help in your situation.
May try it on the next change. Can't hurt....right?
2015 Z Force 800 (53") EPS -
Custom Air Intakes | Custom Exhaust Mod | SuperATV Harness | Custom Fenders | Custom Skid/Rock Sliders | 27" GBC Grim Reapers | Seizmik Mirrors |Конструктор (Rodin's) Doors | Dr Pulley Sliders | 1.5" Wheel Spacers | BENZ Silencer (as needed) | SATV Flip Windshield W\ Rear Shield | Dual Light Bars | Diamond Plate Storage | Magellan TRX7 GPS| Bandit Springs

My Videos On YouTube

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Offline NMKawierider

Re: LOUD TRANSMISSION, I THINK
« Reply #4 on: September 01, 2018, 09:08:40 am »
Well REDRIDER I decided to change it again even though it has only about 50 miles on it and it was already full of metal both in the oil and on the plug. And I did pickup some 85/140w while at WalMart to put in it the other day so..we'll see. You can really here it these days in my videos and the left axle is starting to show some movement at the case. Got one more big ride this year in a week..hope it makes it.

2015 Z Force 800 (53") EPS -
Custom Air Intakes | Custom Exhaust Mod | SuperATV Harness | Custom Fenders | Custom Skid/Rock Sliders | 27" GBC Grim Reapers | Seizmik Mirrors |Конструктор (Rodin's) Doors | Dr Pulley Sliders | 1.5" Wheel Spacers | BENZ Silencer (as needed) | SATV Flip Windshield W\ Rear Shield | Dual Light Bars | Diamond Plate Storage | Magellan TRX7 GPS| Bandit Springs

My Videos On YouTube

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Offline Klkruser

Re: LOUD TRANSMISSION, I THINK
« Reply #5 on: October 17, 2018, 11:23:22 am »
I have a 2018 Uforce 800 with about 390km on it.   The tranny or ? is whining like an old International Corn Husker.   

Just came from a hunting weekend and my partner, who was a mile or so away could hear the whining, but not the exhaust note!  Ya think rear diff too?  Hard to tell where its coming from....

Guess I will start by pulling the rear diff plug?   Sposed to be a 5 year warranty, will they cover this kind of crap?   I also have the annoying bucking on take off, and reading here some say ECM swap??

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Offline REDRIDER

Re: LOUD TRANSMISSION, I THINK
« Reply #6 on: October 17, 2018, 11:59:09 am »
mine whines but I don't think it is in the diff. If I am in high range the whine is loudest at around 40-45mph and on the trail at 20-25 it is there but not as loud. Now if I am in low range at 20mph it is about the same as it is in high range at 45mph. I think mine at least is in the transmission. I am wondering if they used straight cut gears rather than helical as those will for sure whine more, like reverse gear in your car.

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Offline tripplec

Re: LOUD TRANSMISSION, I THINK
« Reply #7 on: Yesterday at 02:54:23 pm »
Well REDRIDER I decided to change it again even though it has only about 50 miles on it and it was already full of metal both in the oil and on the plug. And I did pickup some 85/140w while at WalMart to put in it the other day so..we'll see. You can really here it these days in my videos and the left axle is starting to show some movement at the case. Got one more big ride this year in a week..hope it makes it.
Why isn't your case issue being looked at and replace under warranty??

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Offline NMKawierider

Re: LOUD TRANSMISSION, I THINK
« Reply #8 on: Yesterday at 02:58:46 pm »
Well REDRIDER I decided to change it again even though it has only about 50 miles on it and it was already full of metal both in the oil and on the plug. And I did pickup some 85/140w while at WalMart to put in it the other day so..we'll see. You can really here it these days in my videos and the left axle is starting to show some movement at the case. Got one more big ride this year in a week..hope it makes it.
Why isn't your case issue being looked at and replace under warranty??
What warranty? There's only a year here is the US and it's 2015.
2015 Z Force 800 (53") EPS -
Custom Air Intakes | Custom Exhaust Mod | SuperATV Harness | Custom Fenders | Custom Skid/Rock Sliders | 27" GBC Grim Reapers | Seizmik Mirrors |Конструктор (Rodin's) Doors | Dr Pulley Sliders | 1.5" Wheel Spacers | BENZ Silencer (as needed) | SATV Flip Windshield W\ Rear Shield | Dual Light Bars | Diamond Plate Storage | Magellan TRX7 GPS| Bandit Springs

My Videos On YouTube