I have read that the hypercharger is difficult to get the carbs right, which is why I went with the Barons BAK which includes the complete carb kit for the BAK. I had one on mmy old re jetted and cobra pipes there was a extra kick but more for show for me.
You need to be a member in order to leave a comment. Sign up for a new account in our community. It's easy! Already have an account?
Sign in here. Search In. Existing user? Share More sharing options Followers 0. Recommended Posts. Posted May 29, Thanks in advance, Big Mike. Link to comment Share on other sites More sharing options Reaney in NH Posted May 29, Freebird Posted May 29, I don't remember the details on Jet sizes But it was wort the effort for sure.
Chinto Posted May 29, MikeM Posted May 30, Posted May 30, edited. Posted May 30, Talk to Greyfox. He had one Cutting the spings on the carb slides may help improve throttle response time on CV carbs like the Mikuni's on the V Star Caution should be taken when doing these modifications. Tim B cut 6 turns off of his springs, then stretched them back to standard length. Please do your research before proceeding.
There may or may not be a noticeable change. Drilling slides -. Drilling the side holes in the slide is another method used to help increase throttle response time and if usually accompanied with cutting the springs.
Most will match the larger size at the beginning of the holes and enlarged the stepped down portion of the hole. Make sure to use a very slow speed, or drill by hand so the plastic doesn't melt. Intake Modifications. These bike are capable of much higher output of torque and horsepower than the manufacturer provides stock. The addition of improved air flow into the bike and the addition of a free flowing exhaust system can really boost performance.
The engine in the V Star is the same basic design as the one used in the Virago The Virago came off the show room floor with around 62 HP, while the V Star rolled out with only around From this it is obvious to see that there is some "latent" HP just waiting to be used in the V Star. These will require jetting changes to allow improved fuel flow to accommodate the increased air flow. And all require better, more free flowing pipes to make the most of the changes.
You can access the suggested jetting charts and options HERE. All of the mods are within the scope of any rider to install themselves as long as they are experienced in these things. There is also help and guidance available from the the vendors as well as help available from the members of the forum.
Many of us have done these modifications and will try to help the best we can. Each type of modification varies in ease of installation and performance gains. However they are said to "force" air into the motor, the air box restrictions are still there which are evident in dyno tests.
There is a gain, but it is minimal compared to intake modifications that do away with the stock air box set up. They also are the best first stage of improvement for those on their way to adding cams and other performance mods. Because there are thousands of riders that have gone this route, there is a huge resource in jetting and tuning options that have been tried and dyno tested. POD kits replace the very restrictive stock intake system from the air cleaner inward through and including the air box under the tank - with individual "pod type" filters hence the name perched directly on top of the carbs under the fuel tank.
The retail kits will include the jetting parts needed to handle the increased air flow, with instructions on jetting needed for stock, slip-on and full exhaust systems. There are improvements for all types of exhaust systems, even stock.
But, the maximum power benefit comes from opening up both ends - increasing air flow and using a more free flowing exhaust. The maximum improvement comes from doing the pod kit and full exhaust at the same time, and that also means you will only have to mess with the jetting once. But doing the jetting a second time is really no big deal, so if cash flow precludes doing both together, do them in stages. Hyper Charger installation - Hypercharger Installation.
These things look cool with the moving intake flaps and all the chrome, but the performance increases are minimal when compared to the basic "Pod" intake modification. It still uses the stock air box and a version of the restrictive rubber snorkel which is the biggest impediment to clean air flow.
There are several riders who have left the Hyper Charger unit on their bikes even after they did the Pod modification, completely detached from the intake system just for the "cool" factor.
Hyper Chargers Work, But Well, Hyperchargers absolutely do work, albeit not in the way that you might need or want.
They can be effectively tuned for a specific cruising speed to give you impressive acceleration in a throttle roll-on. Unfortunately that comes with just so-so performance the rest of the time at lower speeds where you will actually be over-jetted for the airflow. They are hellishly hard to tune the carburetors to, as the change in air pressure in the intake system is radically different at 30mph and 65 mph. At idle and low speeds there is a measurable vacuum in the inlet air stream that is how we balance our carburetors.
At speed there is an overpressure condition that is higher then the ambient air pressure where you are. At speed, it performs like a supercharger. If you try to tune the thing on a Dyno, you will get miserable results, unless you Dyno is in a wind tunnel. Short of that you would need to in some way provide accelerated airflow to the Hypercharger inlet, at a velocity that would match the speed you want to tune it for.
What does that mean at 40, 60, or 80 MPH??? Well it does not really tell you anything. That is perhaps why the Dyno run will just indicate about a 1 HP increase across the band. Just about the same as you get with a larger and less restrictive air filter.
The manufacturers that offer this equipment really just give your their best estimate of the correct rejetting that will make the boy run well at the HP peak of your power band most of the time. What about your Hypercharger installation working too well? On some installations, on some bikes, the inlet actually takes in too much air. When that occurs, the carburetor venturi tends to pressurize, and in effect, restricts or stops the flow of fuel.
The solution, worked out by a group of Vulcan riders see, they are good guys too , was to also pressurize the carburetor float bowl as well. They had accomplished this by running an additional air hose s from the Air ram to the carburetor float bowls.
I would expect that this same principle also applies to most Big Air Kits, How many of them have been tested in an environment that duplicates the airflow of a bike moving at speed? A volume of air moving at speed past a stationary object usually results in a big-time pressure drop. While the BAK filter is in an area of substantial turbulence, there still remains a pressure wave on the leading face, and a major negative pressure on the trailing side.
Does that result in a positive or negative partial pressure inside the air box?? Well I don't know, and I bet most of the manufacturers don't know either. It MUST be tested at speed with internal pressure sensors inside the filter housing and at the carburetor inlet. I would expect that Kuryakyn has now addressed this issue and resolved it. As the Hypercharger has been available for HD applications for some time now you will find a lot of data and testimonials on the HD specific bulletin boards.
Good I wish you well with whatever system you choose. KJS Intake. A rather expensive option to convert the V Star to a single carb though the use of a specially developed manifold and a carb like the Mikuni HS Jetting and Tuning Information- Click Here. Pod Kit - Do It Yourself. However, somewhere out there is a pot-hole that's waiting to dislodge the pod from the rubber boot and wreck havoc before I have a clue as to what's happening.
So I went the safe route and cut a piece of chrome pipe for each pod to slip between the filter and the boot to give the clamp something more to hang onto than rubber to rubber.
That was AFTER trying to cut the pieces myself with a hacksaw - which only served to remind me how imperfect hacksaw cutting is! Quiet Pods - reduced intake noise set ups. Here's the link to the thread with explanation and pictures - Nice Job Larry!!!
Another Low Noise Pod Setup - navistar71 ziggy I bolted it in place where the original air box bolted in the rear and through frame in the front. This took care of most of the pod noise. Metric Magic - Dragon's Breath.
MaxAir Note: many forum members have complained about poor customer service from this vendor. Exposed POD Kits. Metric Magic Tim Bondurant has designed and now implemented an alternative to the 'classic" under the tank pod kit.
His product, Dragon's Breath, is described above and in detail on his site, referenced above. This section here is to trace the idea back to Joe Conaway, who had been experimenting with an alternative arrangement, and more, to the normal pods-under-the-tank air intake mod.
Exposed Ramflo Filters. Just figured I'd share the air kit I made up using series Ramflo filters. One on each side both are functional. The filters can be bought with blank backing plates so a hole would also need to be made.
The filters I used had two holes so one was widen and used and the other covered. Anyway there's a bit more to it, but this will give the general idea of what was done.
0コメント