05-14-2020, 04:03 PM | #286 |
Join Date: May 2019
Location: Port Huron, Michigan
Posts: 637
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I've been waiting for some 3d printer parts that were shipping from around 200 miles from me for a month lol. Another package left Detroit the 23rd and hasn't shown up at the next stop yet so im guessing im not getting that one.
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2020 Triumph Tiger 900 rally. 2018 Bashan Storm 250. pz30b, digital cluster + gear indicator, unifilter and car customs full exhaust. 2019 Taotao 110b boulder atv. The "arm breaker" lol 2007 Honda VTX 1300R. 1974 Suzuki tm125, work in progress 2001 Suzuki Drz 400s. |
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05-16-2020, 10:39 PM | #287 | |
Join Date: May 2020
Location: pnw
Posts: 16
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05-16-2020, 11:14 PM | #288 |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,100
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Sprocket studs? 4, and yes I would get new flange nuts too, Serrated flange nuts of possible, or Nylock nuts and lock washers.
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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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05-17-2020, 04:31 PM | #289 |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,100
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Went on a little adventure today with a local that found me through Youtube. He has owned a few Chondas in the past and his Newphew just got a TT250 about a week ago. Today was supposed to be sunny, dry, and in the mid 70's/ Naturally it was cloudy as heck, wet, and high 50's to low 60's and windy as hell.
That made for one stretch where we had to literally turn around because the mud was so thick and sticky that even the big knobbies on the Himalayan couldn't clear themselves. So my Shinko 700's and the stock TT250 tires (a 50/50 tire) didn't stand a chance. I couldn't even idle in first gear without spinning. All three of us were ice skating, and the TT250 eventually went down and bent the hell out of the rear brake lever. The poor TT250, which is mostly stock, was struggling against the wind going up some of the steeper hills. Definitely a good display of the power difference with my bike and his. I am geared about 5 teeth down roughly, and I am probably a good 80lbs heavier than he is, and I was having to let off to slow down so I didn't run into him lol. The only other casualty was my Hawk, which just like my last one, had the red wire from the ignition cylinder break off right at the connector behind the headlight. Still was a fun day, despite the weather.
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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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05-17-2020, 09:49 PM | #290 |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,100
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There, found a picture of the TT250. Can you tell he went down on that side? The brake lever took 90% of the impact. He got lucky with everything else, the mirror dug in but didn't break or bend, and none of his controls broke.
Also, as an edit. The entire rear underside of my bike was coated in mud. Not one spec on my pod filter.
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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 Last edited by Megadan; 05-18-2020 at 02:18 AM. |
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05-19-2020, 01:06 PM | #291 |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,100
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Slight jetting update. Bumping up the pilot jet from a 35 to a 38. It's just a hair too lean at light throttle when the temps dip below 70. It didn't used to be an issue, but I also have had to recently bump up my main jet as well. I can only assume that my bike has finally finished seating the rings. I went through the same tuning changes with my last Hawk and the Mikuni clone as it was breaking in too.
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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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05-19-2020, 08:33 PM | #292 |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,100
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Ok, so final jetting results, at least for now until the weather suddenly decides its going to be 90+ degrees for the next 4 months and I have to mess with it again. 38 pilot, 2 turns out on the air screw is pretty close (was 1 5/8ish on the 35) and I stepped down from the 132 main to a 130. That proved to be the magic combo. No more part throttle hesitation, and no slight loading up on fuel. I did make a video, but it ended up being 23 minutes long, and at 60fps in 1080p, my laptop is probably going to self destruct trying to render it for 40 minutes lol.
Also cleaned it up, even polished the fuel tank a bit and treated the seat and other plastics with some 303 Protectant. I love 303. Unlike a lot of other options out there it doesn't attract dust when it dries, and it isn't slippery.
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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 Last edited by Megadan; 05-19-2020 at 10:25 PM. |
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05-19-2020, 10:02 PM | #293 |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,100
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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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05-20-2020, 11:25 AM | #294 |
Join Date: Dec 2018
Location: PNW
Posts: 983
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Your bike runs fabulous! especially at 70 mph and looking good and stable. Well worth the investment.
I have to say I think you should seriously consider a dyno test after you put in the cam and should make the test dependent on obtaining the funds to pay for it from the forum here. One day somebody will do it, why not you as you will have the best bike for the test. If the forum members will pay for it then why not? It will advance all members knowledge. |
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05-21-2020, 03:30 AM | #295 | |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,100
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The lowering of the back end really helped with the stability on the highway. At stock height the bike always felt a bit twitchy, but now it feels planted and stable. I still honestly wouldn't want to go much faster than 70 on it, but it can do it now without being too scary, as long as the wind isn't blowing too hard at least. Even without the cam, I could honestly stay happy with the bike exactly how it is. I think I have struck the right balance of capable commuter bike and light off road machine. As you saw, it can run 60-65 in pretty much any conditions without fighting too hard, and reach at least 70 even when fighting against a mild head wind. I have no doubt that if I geared it taller it could achieve higher speeds, as I tend to run out of the power curve more than power itself, but I enjoy the acceleration more, hence the cam. I may consider a dyno run at some point. Not high on my priority list, but it would be entertaining to see where I sit.
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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 Last edited by Megadan; 05-21-2020 at 11:41 AM. |
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05-21-2020, 10:16 AM | #296 |
Join Date: Dec 2018
Location: PNW
Posts: 983
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There is no down side in my mind other than a disappointment that we have exceeded our expectations with our fanciful illusions of increased horsepower based upon our work. Even if the outcome is a lot lower than expectation, say a 1 hp gain it does not diminish the value of the modifications or the usefulness of the increased horsepower and in fact would show how important even the small gains to be and most importantly it provides a benchmark for measurement and comparison. Oh, I agree, the acceleration is much more enjoyable and you can do better on that with lower gearing!
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05-21-2020, 10:23 AM | #297 |
Join Date: May 2006
Location: Yuma, Arizona
Posts: 9,055
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Loved the video! It was interesting that I am not the only one who seems to catch EVERY RED LIGHT!
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"They say that life's a carousel, spinning fast you got to ride it well..." TGB Delivery Scooter 150 TMEC 200 Enduro--carcass is sadly rotting in the backyard |
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05-21-2020, 10:50 AM | #298 | ||
Join Date: May 2006
Location: Yuma, Arizona
Posts: 9,055
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"They say that life's a carousel, spinning fast you got to ride it well..." TGB Delivery Scooter 150 TMEC 200 Enduro--carcass is sadly rotting in the backyard |
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05-21-2020, 11:27 AM | #299 | |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,100
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I actually believe that figure because of how poorly jetted it is to try and pass emissions. With proper jetting and otherwise stock, I would put it at probably 15-15.5hp, basically in the same territory as the more properly jetted Bashans. I see a full exhaust and intake mod are likely good for about 2hp, bringing these bikes up to around 17hp. Up to this point these figures are fairly easy to back up with actual dyno numbers from other sources, usually putting down 14-15hp at the wheels through a chain driven driveline. After this point it is definintely more speculative, but given what I know from the former and how it affected the bike, I am confident in this educated guess. Admittedly, this can be a plus or minus affair depending on how aggressive the port work is. Head porting with the 30mm smooth bore carb is good for another 2-3hp. I lean closer to 3 with my bike, because as you said I am optimistic lol. Again, some information to back this up thanks to the CCW land speed bike. With a cam and some race level engineering and assembly they put down 23hp at the wheels (thats about 26hp crank). So I don't think its too unrealistic to expect about 20 crank hp from everything I have done. (18whp ish). I am hoping the cam will be another 2-3hp, which I also don't think is too unrealistic, bringing me up to about 22-23hp, or about 20hp at the tire. Something often overlooked with all of this work is the power gained below the curve. Every single upgrade here has also increased power and torque, especially in the mid range. The top end gains are mitigated by the cam profile, and once you port the head, that is the limitation you run into, lack of top end past 7000-7500, with the motor basically unable to really push past 8000rpm in the higher gears. If you really want to be impressed with the performance of my bike in that video, remind yourself that the guy riding it is 6'4 and 270lbs and the bike has the equivalent of 17/45 gearing with a heavier 520 chain setup. Still hits 0-60 in about 14 seconds and can push 70mph with a slight headwind.
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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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05-21-2020, 11:51 AM | #300 | ||
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,100
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As far as the CG250 being viewed as a poor person motor and crude and simple. That has a lot to do with the society where he lives. China is very image based in their society, so to be seen with a poor person engine on your bike means you are a poor person. On many levels the U.S. is also this way, especially in the motorcycle community. The only difference is, we are also a very nostalgic society, and simple old fashioned things are also attractive because of their simple old fashioned nature. We love them entirely because they are crude and basic. Plus, for a certain percentage of people, it's a form of entertainment to try and turn a motor that shouldn't be that good into something great. It's a point of pride for me in particular to be able to say I made the power myself and didn't just buy my way out of it. I can fully admit the newer engines are better designs, but my crude and simple CG will always be number 1 to me. Logic be damned.
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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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