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The New Werks B6 .21 Buggy Racing Engine!

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The New Werks B6 .21 Buggy Racing Engine!

Old 05-28-2010, 01:00 PM
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Default The New Werks B6 .21 Buggy Racing Engine!

Hello Guys, I mentioned this on our B5 thread but thought that I would start a new thread dedicated specifically to this engine. Announcement is below!

*****

Following on the success of our B5 .21 engine, Werks Racing is pleased to announce the release of the new B6 .21 competition off-road engine! Specifically made for use in todays competition level off-road buggies the B6 utilizes a true 5 port sleeve design. The B6 engine provides a buttery smooth, super linear power band with strong mid and top end, perfect for the precise control that is required to compete at the highest levels of off-road buggy racing. Most importantly the B6 also posses one of the most key ingredients for competition today, efficiency! The B6 provides run times amongst the best in the industry! Combine that efficiency with one of the the most linear power band possible and you have all that you could ever want in one of todays top completion buggy engines. Add to all of that legendary Italian build quality, some of the best customer service in the industry and a shockingly low $229.99 price point and you have a phenomena in the making!

Again this engine is designed specifically for buggy racing and is focused squarely at the market segment occupied by engines such as the Novarossi 21+4 engine! Frankly from a price/performance stand point I think it kills it! In buggy applications you get a smoother bottom than the 21+4 with equal mid and top, equal run times and and as a nice little perk...you save about a hundred and twenty bucks doing it lol!!!! We have been quietly testing and developing this engine over the last 4-5 months and to say that I'm pleased with the way it turned out would be an understatement!

I'm happy to say that these engines will be available for pre-order starting today from A-main hobbies who I would like to thank for their awesome support over the years! Our initial shipment of B6's should have been here today but unfortunately got delayed in customs but will be showing up early next week. I would expect A-main to be shipping B6's by Wednesday of next week at the latest!

So if you would like what I personally think is going to be one of the best performing & priced buggy engines on the market this is your opportunity! Needless to say initially quantities are going to be limited so if you want one, get your order in! On a side note I'm happy to say that with the B6 we will also be including one of our #5 Buggy Turbo plugs for free with the engine!

Regards,

Ron

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Some people have been asking about break in and how to do it. Here is a write up that I did for the B5 thread on how I go about breaking in engines. This exact same system, settings etc. works with the B6!
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2) The infamous break in question lol! We're a racing company and make engines for racers, what I have found is that talk to 4 different racers and you will get 4 different opinions on how to do it lol! You wanted a detailed answer though so let the book writing begin lol!

The way that I normal do it is to set the HS needle to flush with the end of the housing and then with the air filter off, fire it up and leave it on the box. Blip the throttle a couple of times and then let it come back down to idle. Then I start to screw in the idle stop screw until I see around a 2-2.5mm air gap (opening on the slide)

******* Update 5/27/10 I'm changing this a little as we are now all using the 2010 aluminum carb. The easiest way that I have found to set the air gap mentioned above rather than try to measure 2-2.5mm etc. is just to turn the idle stop screw in 1 1/2 complete turns in from flush. This I have found is a little less than the maximum that the slide can be opened with this screw and not bind*******

When you are doing this your idle speed will start to increase so you are basically going to have to start richening your low speed needle a couple of hours (until you get a smooth, steady idle) then do a couple of hours on the idle stop screw and back and forth until you see the 2-2.5mm+ air gap (******update from above, keep screwing in the idle stop screw 1-2 hours at a time and then richening your LS a bit to bring the idle back down, repeating this until you hit the 1.5 turns in from flush on the idle stop screw as indicated above*******) that I mentioned. As this is a two stroke engine, performance is always dictated by air/fuel ratio and as we are now talking about the low speed needle (remember we set the HS needle flush with the end of the housing and there is no need to touch this again for a while) if you have too much fuel (rich setting) you will have a low idle, if you have too little fuel (lean setting) you will have a high idle). It basically is a no brainer if you are too rich or lean because your engine will tell you!

Once you get a steady idle going with the large air gap that I mentioned (large air gap means a lot of air flow, to get a steady idle means that to compensate you will have to dump a lot of fuel through the engine= guaranteed rich condition and you can not damage your engine right off the bat by being too lean) I idle it through the first tank on the box. This is done basically to pump a lot of oil through the engine to flush out any metal particles in the engine and remove the minute bit of metal particles that are always released initially during break in.

Now with the radio gear on, engine off and the slide closed look down the throat of the carb and slowly start to pull the trigger. Take note of the how much throttle you are giving at the point that the low speed needle (which is connected to the slide) comes out of the spray bar (the hollow tube) on the opposite side of the carb. We will use this as a referance for tuning later on but basically what is happening is that during the range of throttle movement that the low speed needle is embedded in the spray bar, the low speed needle will affect fuel delivery (for the purist we both know that this is a simplified explanation as the fuel first travels through the HS needle circuit before going to the LS but since we already set the HS to a rich setting and will not be touching this for a while it's pretty much a mute point). At the point that it is out of the spray bar the fuel delivery (or tune) is affected solely by the high speed needle.

Then I re-install the air filter, fire up the engine and toss it on the ground. Start slowly doing figure eights at say 3 to 4 mph until you run through the tank. Then for the next tank i fire the engine up again and back the idle screw out a couple of hours. You will immediately hear the idle speed start to reduce, to compensate for this I then lean the low speed needle a couple of hours until I again hear a smooth steady idle. Once I have this I then start doing figure eights again but now a little bit fasted until the tank is empty. Next tank fire up the engine, back idle screw out a couple of hours, lean LS needle a couple of hours, do figure eights a couple of mph faster.

Basically what I'm doing with this system is slowly reducing the amount of lubricant being pumped through the engine while at the same time slowly increasing the amount of load that is being put on the engine. This I keep on repeating until I get to approximately the point that I'm pulling the trigger far enough that I know the low speed needle is being pulled out of the spray bar (remember we checked this initially while we had the air filter off) at which point your air gap (the amount the slide is help open by the idle stop screw) will have been reduced to aprox. 1mm.


****Edit 07/19/11. Once you have reached the point that you are going faster than roughly 1/2 throttle as mentioned above you are running on the HS needle which you will start tuning below. Before you do that make one final adjustment to you idle stop screw/LS needle by setting your air gap (amount that the slide is held open by the idle stop screw) to roughly 0.5mm with the reducer out. Once you have set the gap to 0.5mm, fire the engine up blipping the throttle on the box, your LS will now be rich which you will see by a low idle speed, lean the LS a few hours, blipp throttle and allow to come back to idle. Keep adjusting the LS (leaner (in) for a faster idle, richer (out) for a slower idle until you get a smooth, steady idle. By setting the air gap to 0.5mm reducer out you have now set this to the appropriate point for final tuning and you will not touch the idle gap anymore.*****

Once we get to this point we now need to be concerned about the HS needle. What I then do is re-fuel and fire the vehicle up, putt it around for a couple of minutes to heat saturate the case and the chassis and then do a quick high speed run around the track (do not hold it maxed out for a long time on the straight, this is bad). I pull it back in, temp the engine and adjust the HS needle so that I see right around 200 degrees. Then let the engine drop back down to idle and see how the idle performance looks. If the idle is now fast (it has now increased) this means that you need to richen your low speed needle (for the amount of air flowing into the engine, there is too little fuel flowing into it = lean condition) don't touch the idle screw just the LS needle. If the idle is low this means that you now need to lean your low speed needle (for the amount of air flowing into the engine there is too much fuel flowing into it = rich condition) again don't touch the idle screw.

Then I toss the car on the track for another 6-8 tanks with the engine running around 200 degrees as explained above running close to race speed but rolling off the throttle mid way down the straight. Once I'm done with the 6-8 tanks doing this we would have run around 12 to 15 tanks total through the engine in all of the steps above. I now consider the engine pretty much broken in and I'll get close to race tune on the HS setting the engine around 220 degrees. Again check to see what happens to the idle speed and adjust your low speed needle to compensate if it is high or low. Run a further 6 or so tanks through the engine driving it as you normally would and you are good to go to full race tune which will be in the 220 to say mid 240'ish range and I would consider the engine broken in and ready to be pounded on.

A long explanation but using this system helps avoid one of the most common mistakes faced by newer tuners which is setting their low speed needle too lean because they have too little air gap (the carb is hardly open help open by the idle stop screw so to compensate they set the LS needle super lean easily causing damage to the engine).

I also like to use this system because I often end up tuning and/or breaking in a lot of different types of engine with people. Using this system i never even worry about knowing what the factory needle settings are or anything along those lines. I just set the HS and LS flush with the end of the housing, set the air gap so that the slide is open 1-1.5mm and fire the engine up. How it idles immediately tells me if the LS needle is too lean or rich so I set this, then check the temp after a high speed run, adjust the HS needle to be in the 220'ish range, check idle speed and set LS so that it is smooth and steady and the engine is ready to go. Takes about 4-5 minutes total on an engine that could be completely out of whack and I've never even seen or ran before lol!

Last edited by Werks; 07-19-2011 at 08:55 AM.
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Old 05-28-2010, 01:02 PM
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Some comparison info between the B5 and B6

***************************************

Originally Posted by Razathorn View Post
Could we get a side by side pro/con comparison of the b5 and b6? Is it just a next generation of the b5?
Sure, as mentioned the B5 is a general purpose engine as has been proven over the last 6+ months it just works and it works well in both buggy and truggy! The B6 is specifically designed to provide a power-band best suited to buggy use. So the difference between the two:

Bottom end: B5 aggressive, B6 smooth
Mid range: B5 aggressive, B6 deceptively strong (read really smooth)
Top end: B5 strong, B6 equally strong
Run time: B6 + 1 - 1 /2 mintues

As mentioned the B5 is in my opinion the best all around performing engine available at the price or even for say + $100. It works well in buggy, it works well in truggy. It does not cost a lot and it is a perfect engine to have for most track conditions and is the choice if you are running truggy.

The B6 we have simply refined the power band so that it is more suitable for buggy's. It's smoother = less wheel spin and making it easier for the driver to put the power down efficiently this equals efficiency meaning more run time. So again it really is designed as a buggy racing engine and I think looking at what is on the market at this time it will prove to be one of the best! Hope this helps a bit!
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Old 05-28-2010, 01:15 PM
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I guess I won't be buying another B5!

I really like what i just read! I cant wait to get one
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Old 05-28-2010, 01:25 PM
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Is that a 1:30 runtime improvement potentially, or a 30 second to 1 minute increase over a b5?
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Old 05-28-2010, 02:50 PM
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Sounds sweet!
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Old 05-28-2010, 03:03 PM
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Default Looking forward to it!

Durrr.. I meant to say the what are the changes beyond the piston and sleeve...Can't wait to see it!

Last edited by scoopdaloop; 05-28-2010 at 05:55 PM.
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Old 05-28-2010, 03:29 PM
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Originally Posted by Razathorn View Post
Is that a 1:30 runtime improvement potentially, or a 30 second to 1 minute increase over a b5?
Obviously run times vary by driver and track size/type but lets just say that in back to back testing in the hands of a pro we were not giving anything up to the Novarossi 21+4 ;-)
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Old 05-28-2010, 03:30 PM
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Originally Posted by scoopdaloop View Post
So the only difference is the sleeve? Can't wait to see it!
Lol, the piston & sleeve are the main components of an engine! But there are a few other changes that have been made but this is the major difference.
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Old 05-28-2010, 03:36 PM
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Before I forget, UPS re-found our shipment and delivered it today so I'm happy to say that A-main will have stock on hand on Monday! Here's the link if you would like to take a look at the engine!

http://www.amainhobbies.com/product_...tor-Turbo-Plug
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Old 05-28-2010, 04:32 PM
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Thats it, i want one
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Old 05-28-2010, 05:18 PM
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This is great news. And at $230... I'm glad Werks is sticking with the aggressive price points.
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Old 05-28-2010, 05:26 PM
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Originally Posted by JASON671 View Post
Thats it, i want one
You're going to love it! This is one of those engines that are deceptive, the engine is so smooth that you don't realy notice how much power it produces! It's interesting but in testing at first we thought that we were going slower because the cars were not stepping out and we were not seeing any wheel spin, basicaly it looked like the cars were not going fast lol. Then we started noticing that our buggy guys were actualy over jumping things by 3-4 feet! In actuality because of the super smooth bottom end they were putting the power down and moving the car with out upsetting the chassis! If you can imagine it's like giving your buggy a smooth, steady push versus giving it a kick! Both methods will move your buggy but I think that we all can agree that the smooth, steady puch will do it a more controllable and less dramatic manner lol. That's the key to how the B6 works in buggy!

Regards,

Ron
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Old 05-28-2010, 05:44 PM
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Hi Ron -

Thanks for continuing to push the competition!!!

What pipe do we pair this with?
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Old 05-28-2010, 06:14 PM
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Originally Posted by 305M3 View Post
Hi Ron -

Thanks for continuing to push the competition!!!

What pipe do we pair this with?
You would use exactly the same ones as with the B5, 2013 for stronger bottom end and 2057 for smoother bottom a little bit better run time!

Regards,

Ron
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Old 05-28-2010, 06:32 PM
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This will be my next motor, got to have one soon. Sounds like a motor built just for me and love the great price tag.
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