Hawk or other 229cc engine based enduro setup database
 

I've seen these on other forums and looks like it would be helpful here with almost all of these needing some sort of tweaking out of the box. Post your setups here to help other CR's to spend more time riding than wrenching. If you are still having issues with your setup please wait to post until they are ironed out.

Bike: >>>Hawk, bashan, tt250 etc

Elevation:>>>Distance above sea level and location if you would like.

Carb:>>> Mikuni, PZ30, Keihin etc.

Jet sizes:>>> self explanatory

Needle setting :>>> Clip setting or shims used

Pilot screw turns:>>> self explanatory

Relevant mods:>>>Sprocket sizes, Exhaust, intake, bore, stroke, porting, cam? NOT lights, suspension, stickers etc

Top speed:>>> Please try to only put gps verified numbers here and specify if your going by that or the stock speedo.

BLANK

Bike:

Elevation:

Carb:

Jet sizes:

Needle setting:

Pilot screw turns:

Relevant mods:

Top speed:

Bike: 2015 RPS Hawk

Elevation: 1100ft

Carb: PZ30

Jet sizes: 110 main, stock pilot

Needle setting: 2 shims

Pilot screw turns: 2

Relevant mods: air box mod, exhaust baffle removed, 17t front sprocket

Top speed: 56 (stock speedo)

Have you seen the internets hottest hawk ,Ariel ,BSA,norton mixed nonsense thread that has over 10 brazzilion viewers tuned in daily ,which has everything in the mods department listed dozens of times over and over ?,and I am pretty certain there is at least two threads compiling a list with which parts and mods are recommended for hawks although I cannot remember too many with the elevation listed .

Yes I have. The purpose of this thread is to have an easy place to look at working setups without having to get through all the chatter and crosstalk. Maybe with enough people posting their info it can eventually be turned into a sticky.

-Jeff

Bike: 2016 RPS Hawk

Elevation: 10ft

Carb: PWK30

Jet sizes: 125 main, 38 pilot

Needle setting: 2nd notch from bottom

Pilot screw turns:1 1/2


Direct Ignition Coil


Ported & Decked Head 10:1 Compression Ratio

Relevant mods: Foam Pod Filter, Ebay muffler, Cat removed, 17t front 40 rear sprocket, Dual oil coolers, NGK(2202) DPR8EIX-9 Iridium IX Spark Plug

Top speed: any day 76 mph GPS , Digital Cluster. fastest was 80 mph down hill lol

Bike: >>> Hawk

Elevation:>>> 600 Feet

Carb:>>> Mikuni VM26 Clone

Jet sizes:>>> 20 idle, 110 main

Needle setting :>>> Full Rich (lowest clip)

Pilot screw turns:>>> 1.5

Relevant mods:>>> 15/40 sprockets, stock exhaust, Airbox mod, stock air filter, Oil cooler

Top speed:>>> 55 mph GPS

Bike: 2007 Lifan GY5 200cc


Elevation: 100 feet


Carb: Mikuni 30mm


Jet Sizes: 109 main, 30 slow


Needle Setting: middle


Pilot Screw Turns: 1


Relevant Mods: 2002 XR250R muffler with 1996 XR250R tip (very little restriction), cat-free header


Top Speed: Not sure. Have reached at 70mph, but haven't actually held WOT for top speed. Cruise at about 62mph is reasonable

Mixed nonsense? You know how to really hurt a guy!...ARH

There is just too much other bike brand stuff and stories about your friends mixed in with that thread ,it is interesting reading for someone like me who has worked on Ariel square fours ,and bsa ,norton,laverda ,weirdo stuff like that ,but most people around here do not have the basics mastered ,and piling pages of info about bikes no longer relevant just makes for a bunch of unnecessary confusion .If you started a separate thread about your Ariel and your other adventures ,it would be easier for the novices to figure out what you are getting at ,and I think it would be more enjoyable to read for all .
I did note your thread was the internets hottest Hawk,......thread ,and made note of the 10 brazzilion viewers tuning in daily , I just feel if it stayed closer to the Hawk mother ship ,and the other stories stayed in a different thread it would be easier and less confusing .

I didn't know that an Ariel Square Four was wierdo stuff, but I am always willing to be educated. Sorry you didn't find any useful stuff on Hawk Talk...ARH

I didn't say or mean I didn't find anything useful , just that a new bike person ,new hawk owner if he read that thread which has more info about ariels ,and other bikes will find the information overwhelming .
As for the square four being weirdo stuff how can it not be ? Not a lot of motorcycle engines running around in the 30's with two crankshafts in one engine .

Why do I bring up other bikes on Hawk Talk
 

To me, a single is a single - no matter who made it or when. I'll make it even easier, an air cooled single is much more like every other air cooled single, then you would think. And what has been found to work on any air-cooled single should work on the Hawk single. Within reason. The development of air-cooled singles has been going on since 1900. What works on one of them works on all of them. Getting a more dense volume of flammable gas into the cylinder, and out of it after we have gotten as much work out of it as possible. If the engine has rigid enough crankcases to stand the power increase. Which the Hawk has. The Hawk engine has a very nice die cast head with very good porting. The problems start with the air box, then to the tube which connects it to the carburetor, and the carburetor itself. Through the head, everything is OK. Then comes the exhaust system, which is awful. Bubble gum welds inside the pipe, some kind of rag gasket between head and pipe, tiny catalytic converter restricting flow even more. We've discussed carburetor tuning, and so forth....ARH

Bike: 2016 CSC TT 250


Elevation: 13 feet


Carb: Stock Keima


Jet Sizes: 115 Main, Stock Pilot


Needle Setting: Raised 1 notch


Pilot Screw Turns: I haven't had time to drill out the plug for the pilot as of yet.


Relevant Mods: Opened up stock exhaust, 17/45 Gearing, swapped stock speedo for digital cluster.

Top Speed: I have reached 67 mph on GPS on a slight downhill which read 68 on the digital cluster. It will cruise at 60 mph with no problem.

when you guys talk about shimming the needle, do you have the 5 available notches, you put it on the most rich setting, and also put a washer under that?

The stock carbs don't have the grooves so we have to shim it.

so the fact that i have mine on the lowest notch with a washer under it probably means im too rich? haha

I think that says you probably want to consider going up a size or two on the main jet.

I agree!!...ARH

Bike: 2015 RPS Hawk

Elevation: 1100ft

Carb: PZ30

Jet sizes: 110 main, stock pilot

Needle setting: 2 shims

Pilot screw turns: 2.25

Relevant mods: Air box mod, foam filter element, eBay exhaust, 17t front, 47t rear, shinko 705'

Top speed: 67(gps) flat out, can cruise at 60 now

The TT runs a Keima carb from the factory and it does have the slotted needle so it's just a matter of moving the clip to change needle position.

TT250. Altitude 1000ft.

VM26 Chikuni, stock exhaust and airbox.

Pilot: 27
Main: 105

Mixture screw 1.75 turns out.

so now your gonna ruin this thread too?

If you don't like what I write - don't read it...ARH

Revised.
Bike: 2017 Hawk

Elevation: 1100ft

Carb: Mikuni VM26 "30mm" Clone

Jet sizes: Genuine Mikuni Jets - 27.5 Pilot. 117.5 Main, factory needle and needle jet.

Needle setting: 4th notch down from the top. (center also works, but I chose the "fatter" option)

Pilot screw turns: 1 1/4 (still needs a little fine tuning but close)

Relevant mods: Sprockets - 17 front, 43 rear. Uni pod filter, Ebay exhaust. Denso iridium plug, NGK XD05F plug cap with resistor removed and shortened plug wire.

Top speed: 70mph GPS on flat ground wth no wind.

Bumping this thread so people are aware of it. Don't be afraid to post examples on here for others. With so many Mikuni clones out there, I think there could be a few more examples on here.

hawk 250
 

Bike: 2016 hawk. .
Elevation: 6400
Carb: PZ30 98 main/stock pilot. Relevant mods: k&n air filter/box mod .Ebay exhaust. NGK BR8EIX plug.
Rotella T6. Valve cover oil cooler from mjstef.
JT non o-ring chain. 17/40 gearing. shinko 705 (rear) Top speed:75 mph, (gps)

2016 hawk:

$30 Makuni (fake) VM26
110 main
20 pilot
2 turns out
needle set on fattest setting.
Stock Air box
Stock exhaust
63 mph top speed
15 front
50 rear
set both intake and Exhaust to 0.05 mm

matt's digital cluster
MSR shifter
burrito tube

Hawk starts right up and there is no flat spot in the RPM range. Really happy with this set up.

Bike: 2015 Hawk

Elevation:240'

Carb: Factory

Jet sizes: 110 Kehein main, factory pilot

Needle setting: 2 custom washers

Pilot screw turns: 1 1/2

Relevant mods: Airbox mod, NGK plug

Top speed: 57mph, gps confirmed

UPDATED!

Bike: Bashan Shark 250

Elevation: 981 ft

Carb: Stock Keihin

Jet sizes: Slow 35, Main 120

Needle setting: Clip last notch down.

Pilot screw turns: 1 3/4

Relevant mods: Ebay CRF230 Exhaust, After market needle, Uni Pod filter.

Top speed: 70MPH (GPS) Top speed. Likes to cruise around 55-60

Sprockets: 17T front, and 45T Rear.

Bike: 2017 Hawk

Elevation: 870ft

Carb: Mikuni VM26 Clone

Jet sizes: Genuine Mikuni Jets - 28 Pilot. 112.5 Main. Factory needle.

Needle setting: middle notch

Pilot screw turns: 1 1/2

Relevant mods: Sprockets - 17 front, 47 rear. Battlax BT45 tires. Motocheez airbox mod. PCV installed in crankcase breather tube. Front fork brace to help with front end speed wobbles.

Top speed: 68mph flat out (no wind, flat road)

Wow! you dug up a old one. lol I need to go back and revise my data a little. :lol:

I found the thread on my UNI pod jet size search, had made a mental note to add my info to it back in the day as I like the idea of the thread, today is that day! :)

I think I'm going to go with megadan's setup with a slightly leaner main jet and needle setting to compensate for the stock exhaust.

Bike: 2019 CSC TT250

Elevation: 160ft

Carb: Mikuni VM26 "30mm" Clone https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

Jet sizes: Genuine Mikuni Jets - 27.5 Pilot. 115 Main, mikuni needle and needle jet.

Needle setting: Center groove

Mixture screw: 2 Turns out from fully seated (engine pulls good through all gears with no hesitation. Good throttle response from idle to 1/2 throttle and 1/2 throttle to 3/4. Very snappy)

Relevant mods: Sprockets - (Stock gearing 17/50), two stage foam filter (42mm), Ebay exhaust, Air injection eliminated. Havent done a top speed run due to the fact that I am still breaking in the engine. I have had it up to 60 mph on a flat stretch and that was at 3/4 to 7/8 throttle. I weigh 170lbs

altitude: 800ft/244m
carb: PZ30 1.5 turns out on mix screw, 110 main jet, no needle mods, idle set while warm open choke at minimum rev without stall from stock pilot
Valves: both .00285 set cold(would like to know a balance tune that doesn't make a lot of noise)


That's a stock Magician with the iridium plug stock gap, T4 oil, and 87 octane. The coldest I've started it was 28F/-2C and had to go over all three choke stages in a three minute window do to the famous PZ30 pilot jet.. Around 60F/15C I can have it idle with open choke in under two minutes, and over 75F/24C not even use choke.

I've put the VM26 china clone on other RPS bikes here but my personal bike I haven't cause I could never find the real 30mm Mikuni..

Updated to be relevant for 2024
2018 Hawk 250.
Altitude 1100ft.

Engine mods: WGK 1010851 292 Camshaft, Roller Cam followers, Motocult 70mm big bore cylinder kit and ported cylinder head, Kajimoto CRF exhaust with 440mm Yoshimura clone muffler. Nibbi Racing high output coil with a shortened lead, XD05F plug cap w/o resistor, NGK DPR8EIX-9 Plug,

Fueling: Mikuni VM26 "30mm" clone carburetor. 120 Main jet, 25 pilot, mixture 1 1/2 turns out, Needle 4th notch down.

Other mods. Dual foam pod filter. 520 chain and sprockets with 13 front and 33 rear sprockets Shinko 700 tires.

Top Speed - 75mph repeatable, 79mph peak in the right conditions.

She is my snarling beastie. Full Mod list in description link.

2019 Hawk 250 -- stock other than changing to a PZ30 Keihin from eBay.

Main jet: 110
Pilot Jet: 45
Needle: 4th notch from top
Idle Mixture Screw: 1.5 turns out


Altitude: 1000 ft


Starts up with little to no choke (finally) and settles into a reasonable idle. No more stalling, sputtering, and warming up for 20 minutes. Feels much fatter throughout the rev range. Definitely more pick up from 50 to top speed.


Only issue I have is that once the bike is warmed up -- which doesn't take long now -- and I am riding anywhere from 10 mph up, it stutters or surges (not really a stumble) at around 1/8 steady throttle. Feels almost like a fuel injection model that is hyper sensitive and hunts between throttle on and throttle off.


Any ideas?


Anyway, much, much better than the stock carb and well worth taking the time to install a replacement.

It would be a better idea to start a new thread so it doesn't clutter up this one with the discussion. We can help get you figured out!

Thanks for digging this one up again. Gave me a chance to revise mine lol.

To any new people out there, feel free to throw in your setups as well. I am going to include this as a link in my setup guide, so the more the merrier!

Yeah, I thought about that but there are so many new threads on jetting issues that I thought I would be referred back to this thread.


:hmm:

I'll start a new one.

Bike: 2016 Magician

Elevation:1500'

Carb: Factory

Jet sizes: 105 Kehein main, 42 pilot

Needle setting: Middle of needle

Pilot screw turns: 1 3/4

Relevant mods: NGK plug

Top speed: Cruises at 55 mph on speedo, haven't done top speed, will take gps when I do.

Bike: 2020 TBR7

Elev: 1000'

Carb: factory PZ30

Jets: 112 main, 38 pilot a/f screw 2 turns out

Needle: 1 washer shim

Mods: port'n polish head, decked 1mm and thin head gasket, foam filter in stock air filter location, stock exhaust, cat deleat, spark arrestor screen removed, 17 tooth front sprocket, stock rear sprocket, larger knobby wheels (hawk front rim & 19" stock rear rim), added oil cooler.

GPS speeds: strong 65mph and 75mph if the winds at my back.

Rider size: 6' 210lbs