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01-27-2018, 11:40 AM | #1 | |
Join Date: May 2016
Location: Ohio
Posts: 154
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Quote:
hmm.. looks like i am going to have to go the route of getting a whole new assembly... I also had to get the front rim assembly a while ago and i dont recall it taking that long. i think it was about 2 weeks. I ordered from txpowersports and this is the rear wheel i'll probably order... https://www.txpowersports.com/ricky_....100030.02.htm but ill also have to wait on the sprocket retainers.... THAT damn HAWK! |
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01-27-2018, 11:54 AM | #2 |
Join Date: May 2016
Location: Ohio
Posts: 154
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BTW did anyone have a link to a replacement c-clip that would fit and work? i browsed through this thread and didnt notice if one was posted.
I think mine is fine but i would like to have a list of new parts just in case or if I decide to just replace everything with brand new hardware Thanks |
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01-27-2018, 12:40 PM | #3 | |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,001
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Quote:
As far as the snap ring goes, the dimensions are 2-1/4" Shaft Diameter, 0.078" Thick. Finding them individually seems to be more of a challenge lol. https://www.grainger.com/product/ROT...ain-Ring-5CA81 With a bit more searching, digging, or even contact suppliers with your specifications, it will likely help locate one. I do know at one point there was somebody selling them on this site, but I do not remember whom.
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Hawk Information and Resource guide: http://www.chinariders.net/showthread.php?t=20331 2018 Hawk 250 - Full Mod list here. http://www.chinariders.net/showpost....62&postcount=1 2024 Royal Enfield Shotgun 650 https://chinariders.net/showthread.php?t=34124 |
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04-17-2022, 11:41 AM | #4 |
Join Date: Feb 2021
Location: Kansas City
Posts: 2,283
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I am going to upgrade to a 520 o-ring chain soon. I got lots of mud on my OEM 428 and it caked up in the front sprocket housing bad! I think it got into the links while I was cleaning it too, and it is making some thunks periodical while I am riding, even though I thoroughly cleaned and lubed it. Maybe I damaged the front sprocket too.
I also want to drop the gearing for a slightly lower 1st ratio. I don't mind losing some speed on the road since I usually just use residential streets for the most part. So I need to choose sprockets. I made a chart with some commonly available sizes (JT, at least). I made this for my Storm (428H 17/46 OEM) and included the sizes for 520 that I might move to. Then I realized that Hawks are much more ubiquitous so I made one for the Hawk. I hope this is useful for you. the top line in each chart is presumably your stock sprockets. The additional lines compare the OEM ratio to the chosen front/rear replacements so you can see the raw difference and % change compared to stock. I sorted these two charts ascending based on ratio, so 428 or 520 ratios go up as you go down the rows. I haven't looked at the individual gear ratios for 1st -5th inside the engine, but this is just comparing final drive to new choices which works since you already know what you get while riding it. And no one is going to change those internal gears! Hawk OEM ratio is quite low (0.300), so it isn't surprising that most people want to go higher. Storm comes with a taller ratio for final drive (0.3696). I will go 12/35 or 12/33, which will drop my final drive ratio by 1.6 or 7.2, respectively. Less than a 2% change is really negligible for off road purposes (or on road, for that matter!), Next time I go riding, I need to really decide if I want to drop 7% before I take the plunge |
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04-17-2022, 01:37 PM | #5 |
Join Date: Feb 2021
Location: Kansas City
Posts: 2,283
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Sprocket cushion bushing removal!
I used a similar method (megadan's grease hydraulic method) to remove the pilot bearing in my 1st Gen Toyota years ago. I used a 19mm bolt in this case...
Get a newspaper and shred it into 2 inch wide strips. Get a bowl of water. Wet the strips and stuff them into the recess through the center hole of the bushing. Keep doing it until it is full, and then use a snug fitting bolt, and hammer, to compress the wet newspaper. Add more wet newspaper as it comes out. Just like the grease, it pushes the thing out from the inside in a snap. Amazingly simple. The newspaper is what makes this work. Yes, it is a hydraulic "press" that you are building, but the newspaper holds the water nicely. Thick cooked oatmeal may also work. In fact, if the recess behind the bushing is small, it may still work if the newspaper can get pushed into the recess, however small. Oh... photobucket is ransoming my images, and I haven't subscribe yet to recover them. But the picture still shows up at Yotatech forums for some reason with the photobucket watermark since I haven't subscribed! |
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