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 2023 CFMOTO 800NK, when kambing msia??

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jaycee1
post Jul 12 2024, 07:54 PM

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QUOTE(Vincent6596 @ Jul 12 2024, 02:00 PM)
can share the link of your windscreen ?
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[URL=https://m.tb.cn/h.g7ftwcTQuJa31Oh?tk=zaoc3YZPjxi CZ0016 「适用春风800NK改装件前挡风玻璃风镜导流罩风挡摩托车前挡风配件」
点击链接直接打开 或者 淘宝搜索直接打开]windscreen link[/URL]

This post has been edited by jaycee1: Jul 12 2024, 07:55 PM
Vincent6596
post Jul 13 2024, 05:40 PM

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QUOTE(jaycee1 @ Jul 12 2024, 07:54 PM)
[URL=https://m.tb.cn/h.g7ftwcTQuJa31Oh?tk=zaoc3YZPjxi CZ0016 「适用春风800NK改装件前挡风玻璃风镜导流罩风挡摩托车前挡风配件」
点击链接直接打开 或者 淘宝搜索直接打开]windscreen link[/URL]
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this windscreen seem like macam did not fix any windscreen on it sweat.gif sweat.gif
jaycee1
post Jul 16 2024, 01:08 PM

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QUOTE(Vincent6596 @ Jul 13 2024, 05:40 PM)
this windscreen seem like macam did not fix any windscreen on it  sweat.gif  sweat.gif
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I'm only using the base mounting plate of this set. This windshield/fly screen wont fit on our local Advance model. Won't clear the big TFT.

I'm using a customised z650 windshield mounted to that base plate.
Vincent6596
post Jul 16 2024, 04:59 PM

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QUOTE(jaycee1 @ Jul 16 2024, 01:08 PM)
I'm only using the base mounting plate of this set. This windshield/fly screen wont fit on our local Advance model. Won't clear the big TFT.

I'm using a customised z650 windshield mounted to that base plate.
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can share some photo and link to buy the required item to get it done ?

due to i am helping my friend to look for the idea before he make his final decision before pull the trigger for the big CC upgrade.
jaycee1
post Jul 17 2024, 11:46 AM

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QUOTE(Vincent6596 @ Jul 16 2024, 04:59 PM)
can share some photo and link to buy the required item to get it done ?

due to i am helping my friend to look for the idea before he make his final decision before pull the trigger for the big CC upgrade.
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Link for the base bracket I already posted.

For the z650 windshild, just search shopee for it. Just make sure the z windshield comes with the bracket.

It's not plug and play. Need to customise .
Vincent6596
post Jul 17 2024, 02:58 PM

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QUOTE(jaycee1 @ Jul 17 2024, 11:46 AM)
Link for the base bracket I already posted.

For the z650 windshild, just search shopee for it. Just make sure the z windshield comes with the bracket.

It's not plug and play. Need to customise .
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you mean need to customise the z650 windshield bracket then only able to fit it on 800NK base bracket ?
am i correct ?

can show any photo of how does the modified thing and how it look that fit on your bike ?

This post has been edited by Vincent6596: Jul 17 2024, 04:10 PM
alexei
post Jul 18 2024, 10:13 AM

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QUOTE
It's still a rather small windshield. Takes wind off your chest but your shoulders and helmet still gets the brunt of it.

However, that said. If you tuck down, you can just get the helmet under the wind blast for a top speed run. It's a naked bike afterall. You will get lots of wind. But cruising at 130 to 150 isn't too bad for a few hours ride. The stock aero isn't too bad to begin with.

There is a bigger handlebar mounted windshield available for our NK but I don't like how it's mounted. Looks like an afterthought. Mine looks like OE that came with the bike

user posted image
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Vincent6596
Vincent6596
post Jul 18 2024, 10:43 AM

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QUOTE(alexei @ Jul 18 2024, 10:13 AM)
Vincent6596
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seem like will need some effort to make it done, will let my friend know as well biggrin.gif biggrin.gif
jaycee1
post Jul 18 2024, 05:59 PM

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QUOTE(Vincent6596 @ Jul 17 2024, 02:58 PM)
you mean need to customise the z650 windshield bracket then only able to fit it on 800NK base bracket ?
am i correct ?

can show any photo of how does the modified thing and how it look that fit on your bike ?
*
Buy bike first. I'd be more than happy to help. Lol.
jaycee1
post Aug 27 2024, 03:56 PM

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user posted image

A little bump in the group.

Bike just turned over 20k KMs.


Had a failure (crack) on the coolant reservoir. Looks like manufacturing defect. Replaced under warranty. Seem a common item, already affected a few bikes. Until CFmoto redesigns the coolant reservoir , this might happen again. The issue is there is a seam at where the mounting ear/eyelet is, so if it gets over tightened or too much vibration, it may split the seam. We shall see.

Have an intermittent CEL during and since my Thai trip. Will have that checked out during the upcoming oil change service soon. Bike still runs ok.

Will be reaching the 30k schedule major maintenance with VC check in 3-4 months. Will know for sure if the cheese cam problem affects our bikes or not. So far no reports of cam failure on the 800nk and 800mt yet...so hopefully that issue has been addressed.
JustForFun
post Aug 27 2024, 11:49 PM

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QUOTE(jaycee1 @ Aug 27 2024, 03:56 PM)
user posted image

A little bump in the group.

Bike just turned over 20k KMs.
Had a failure (crack) on the coolant reservoir. Looks like manufacturing defect. Replaced under warranty. Seem a common item, already affected a few bikes. Until CFmoto redesigns the coolant reservoir , this might happen again. The issue is there is a seam at where the mounting ear/eyelet is, so if it gets over tightened or too much vibration, it may split the seam. We shall see.

Have an intermittent CEL during and since my Thai trip. Will have that checked out during the upcoming oil change service soon. Bike still runs ok.

Will be reaching the 30k schedule major maintenance with VC check in 3-4 months. Will know for sure if the cheese cam problem affects our bikes or not. So far no reports of cam failure on the 800nk and 800mt yet...so hopefully that issue has been addressed.
*
Is the coolant problem specific to 800NK only or also the Duke 790…?
alexei
post Aug 28 2024, 09:01 AM

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QUOTE(jaycee1 @ Aug 27 2024, 03:56 PM)
Will be reaching the 30k schedule major maintenance with VC check in 3-4 months. Will know for sure if the cheese cam problem affects our bikes or not. So far no reports of cam failure on the 800nk and 800mt yet...so hopefully that issue has been addressed.
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nice update


This post has been edited by alexei: Aug 28 2024, 09:02 AM
jaycee1
post Aug 28 2024, 01:23 PM

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QUOTE(JustForFun @ Aug 27 2024, 11:49 PM)
Is the coolant problem specific to 800NK only or also the Duke 790…?
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As far as I can tell. This is a 800nk specific problem only. The duke could very well have a different designed bottle.
jaycee1
post Aug 29 2024, 09:20 AM

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user posted image

Battery died on the key fob. One day working, next day not at all.

Fortunately battery is easy to replace. Takes a single 2032 button. What we know so far, the battery only lasts on average 4-5 months only.

My only gripe is the waterproofing of the key is t the best, and the gasket was not properly installed on mine.

The bike can still be started with the phone App (either BT or remote network unlock) in case the key fob fails to work.
ZZR-Pilot
post Aug 29 2024, 01:58 PM

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QUOTE(jaycee1 @ Aug 27 2024, 04:56 PM)
Will be reaching the 30k schedule major maintenance with VC check in 3-4 months. Will know for sure if the cheese cam problem affects our bikes or not. So far no reports of cam failure on the 800nk and 800mt yet...so hopefully that issue has been addressed.
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Camshafts made of soft cheese continue to be an issue in KTMs, despite everything.

I'm surprised nobody has floated the idea of using CFmoto camshafts in KTM's LC8C's valvetrain.

If CFmoto punya lebih tahan, I wonder why that is. Separate production lines in Zhejiang?
jaycee1
post Aug 29 2024, 03:55 PM

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QUOTE(ZZR-Pilot @ Aug 29 2024, 01:58 PM)
Camshafts made of soft cheese continue to be an issue in KTMs, despite everything.

I'm surprised nobody has floated the idea of using CFmoto camshafts in KTM's LC8C's valvetrain.

If CFmoto punya lebih tahan, I wonder why that is. Separate production lines in Zhejiang?
*
The issue is probably not the camshaft but something more serious. There are reports that the oiling journals for the cam oil squirters have been improperly machined leading to inadequate oiling of the cam lobes.

KTM already released a statement that the cam shore hardness is not he issue.

If this was the issue, it would be a full head replacement.

This post has been edited by jaycee1: Aug 29 2024, 03:56 PM
alexei
post Aug 29 2024, 04:10 PM

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QUOTE(jaycee1 @ Aug 29 2024, 03:55 PM)
The issue is probably not the camshaft but something more serious. There are reports that the oiling journals for the cam oil squirters have been improperly machined leading to inadequate oiling of the cam lobes.

KTM already released a statement that the cam shore hardness is not he issue.

If this was the issue, it would be a full head replacement.
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I saw 1 video, it says oil starvation - oil galley size, oil path machine hole mismatch, and oil screen
Patent
post Aug 29 2024, 05:11 PM

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QUOTE(ZZR-Pilot @ Aug 29 2024, 01:58 PM)
Camshafts made of soft cheese continue to be an issue in KTMs, despite everything.

I'm surprised nobody has floated the idea of using CFmoto camshafts in KTM's LC8C's valvetrain.

If CFmoto punya lebih tahan, I wonder why that is. Separate production lines in Zhejiang?
*
as alexei said the issue isnt on the camshaft itself, but somewhere in the engine oil arent properly flowing for the camshaft

this video explains it further but still no words from ktm or other properly tested procedure showing if its actually true




ZZR-Pilot
post Aug 29 2024, 09:58 PM

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QUOTE(Patent @ Aug 29 2024, 06:11 PM)
as alexei said the issue isnt on the camshaft itself, but somewhere in the engine oil arent properly flowing for the camshaft
Dunno, mate. On the other hand MCN quoted Blaire Knight, a Senior Technical Officer at the University of Queensland, who experienced cam failure on his 790. After the engineer analysed his own camshaft, he proposed that the part itself exhibits insufficient hardness to be properly resilient.

“We performed an Arc analysis on my cams and the carbon content was lower than I would’ve expected,” Knight said. “The Rockwell test (a test of metallic material hardness) came in at 51, when it should’ve been up at 58 to 60 to have any real resilience.”

Wallahualam.
alexei
post Aug 30 2024, 09:50 AM

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I think maybe a few factors combined... oil feed, oil starve, and VC gap

the photos online show premature wear started and looked like those piston seizure score marks due to heat and oil film breakdown etc...

some sources show the fuel map runs lean at 15:1 AFR below 5k RPM, not sure if this can affect exhaust valve temperature or not

I hope it is not the case for the NK's

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