|
Originally Posted by Werks
(Post 15285293)
It does look like they set up a really nice track layout for Wicked Weekend. With 500+ enteries at the event too it held up really well too! As far as people using the B5-Pro II's quite a few of our US based drivers are starting to run them in buggy now especially if they like an aggressive bottom end and/or have a more "punched" driving style.
Run time wise those two engines are going to be pretty comparable. Any real difference in run time between the two is again going primarily to be the result of different driving styles. The B7KE is more of a large track good bottom with strong mid and a lot of top end engine while the B5-Pro II is a really strong bottom and mid with good top end motor. So again looking at driving styles a person that tends to drive punched will have a tendency to grab more throttle in the tighter infield sections with a B7KE than they would with a B5-Pro II. That means that in that situation the power band of the B5-Pro II will probably be better suited for a punched driver, that driver will be able to use smaller throttle inputs with the ultimate result being that the engine will probably consume less fuel. Again though when you compare run times you have to look at not only the specific engine but then you also have to factor in the driving style and the type of track. That same engine and track conditions with a driver that has a very smooth driving style and does not like a lot of bottom end and they will also consume less fuel too because they are going to be turning much slower lap times than they would with for instance a B6 series engine because they are going to be babying the throttle coming out of corners and fighting wheel spin lol. So again it really all boils down to a combination of track, engine and most importantly matching the engine to your driving style. We have tested B7KE's with the 2013 pipe set but only in truggy and I've never compared it on the same track back to back with a B5-ProII and 2058 to see what the difference is in run time. Having said that though the difference between an 2058 and 2013 pipe set is usually about 15 seconds or so. Again depending on the track layout, what a persons driving style is and how the power band of the engine suites both of those switching to a pipe like the 2013 that produces more bottom end can result in the driver requiring a less aggressive throttle input meaning that they are able to possibly save fuel too by simply not having to keep the carb as far open as much during a lap. So that right there can make up or partially make up for any difference in run time just from going with one pipe to the other. As you can see this is not really a black versus white type of thing, there is sort of a grey area where an advantage might partially off set one of the negatives etc. making it really hard to say what is best. Truthefuly it all ultimately comes down to testing, testing, testing and personally figuring out what specifically is the correct set up for you, your driving style and your track layouts! |
Can anyone tell me with the factory needle settings are for the LSN/HSN on the B5?
I picked one up second hand and although it appears to be in good condition, I had major trouble getting it started and running consistently today. Basically just want to start with base carb settings and then start putting a tune on it. Thanks! |
go .5mm - .7mm idle gap, needles flush then fire it up and turn in lsn till you get a steady idle then tune the hsn needle.....you may need to adjust the lsn in or out as you get that hsn needle close to race tune but should be fairly close.
|
Pipe/manifold
What pipe manifolds are people using on this to find best overall performance?
|
Originally Posted by TanknoRC
(Post 15294423)
What pipe manifolds are people using on this to find best overall performance?
|
https://cimg4.ibsrv.net/gimg/www.rct...5f05fb814.jpeg
Rodrigo Nakada with his mechanic and Werks importer Thomas Gisler A quick shout out to Rodrigo Nakad who after taking the win and becoming 2018 1/8th Buggy Brazilian National Champion with his B7KE powered Mugen also went on to take a hard fought 2nd position in the Truggy class with his B5-Pro II powered Mugen truggy! Congratulations Rodrigo for an exceptional weekend and also to Fred Costa for taking taking a second 10th spot both in buggy and this time in Truggy with is B5-Pro II powered HB! |
Congratulations to Werks team driver Evan Vail on last weekends race results at the 2018 S & B Speedway Dirt Championship race. They had world renown track builder Joey Christensed fly out to build an awesome track at what turned out to be a stellar event!
Below is a race report from Evan on the event who used our Werks B5-Pro II engines, 2058 pipes and Werks 30% "Race Blend" fuel in both buggy and truggy ! https://cimg3.ibsrv.net/gimg/www.rct...636d0a05c4.jpg I had an awesome time at S&B Speedway for the 2018 Dirt Championship race! The freshly built layout by Joey Wolters Christensen was one of the best layouts I’ve race on in a while! It made for awesome racing and was a blast to drive on!Racing for me went pretty good! I was able to qualify 4th in Pro Buggy and 2nd in Pro Truggy. The Pro Buggy main didn’t go my way as I was running third and missed my pit window which caused me to lose a few laps. Evan went on to finish a respectible 8th in Pro Nitro Buggy. However, the truggy race would go awesome as I would take the win after me and Austin Woodyard would go head to head for 30 straight minutes. We were never more than 5 seconds apart for the whole race which was awesome!! https://cimg5.ibsrv.net/gimg/www.rct...76759f837a.jpg Both of my Team Associated cars performed great all weekend and my Werks Racing B5 Pro2 Engines provided my vehicles with tons of power!! My Pro Line tires provided awesome traction with X3 Diamond Backs being the choice for Buggy and X3 Holeshots being the choice for Truck! Thank you to all of my friends and sponsors for the support!! Congratulations Evan on the Pro Truggy Win!!!! |
B5 piston damage from sleeve?
Has anyone had piston damage on there werks b5 non pro edition? This has happened to me with in not even a half gallon of break in. Exhaust side of piston is all scared up, looks like port was to sharp and messed up piston. Very odd because iv never had this issue with other b5's that iv had. I'll try posting pics soon
|
I think it's more likely something has entered through the exhaust port causing the damage your now seeing.
I imagine if there had been an issue with the exhaust port the damage would have shown before 15 or so tanks of running. Check the wrist pin on the exhaust side of the piston as well and make sure it's secure (or hasn't come out and caused the piston damage) ..... |
Originally Posted by grizz1
(Post 15320595)
I think it's more likely something has entered through the exhaust port causing the damage your now seeing.
I imagine if there had been an issue with the exhaust port the damage would have shown before 15 or so tanks of running. Check the wrist pin on the exhaust side of the piston as well and make sure it's secure (or hasn't come out and caused the piston damage) ..... |
Heres the piston
|
That looks too widespread to be a sharp edge somewhere on the porting. Something has been in there spreading itself around by the looks of it.
|
Originally Posted by speedworks
(Post 15320878)
Originally Posted by speedworks
(Post 15320597)
I also thought maybe wrist pin clip had come out. But it's all still intact and looks great. Crazy thing is other side of piston and top of it look great. Just the exhaust side is crewed up bad.
Now if we look at the picture that you posted we can see a bunch of black stuff all over the exhaust side of the piston and excessive wear/scoring is also evident on that side of the piston too. One thing to remember about two stroke engines like our RC car engines is that the exhaust side of the piston is always hottest simply because it is exposed to the outgoing exhaust gases. So keeping that in mind, again looking at the picture things will start to make a little more sense..... A) The black material that you see on the side of the piston is basically carbon build up/deposits. The way castor oil that is in all of our fuels works is that it tends to almost localize or pool up around hot sports. Secondly unlike most other oils that get thinner when heated it actually thickens when exposed to heat. So it pools up around hot spots and the hotter those spots get that it is in contact with, the thicker the castor oil gets there by offering better protection. This is why castor oil is included in RC fuels, it provides an additional layer of protection against over lean conditions which cause direct metal to metal contact (seizing). That is right up until it's (whatever castor oil blend used in your fuel's) flash point (temperature at which is combusts) is hit at which point it basically starts to burn off leaving a layer of carbon deposit in it's place. That again is all of the black stuff visible on the side of your piston. B) The areas where there appears to be scoring/scratches on the side of the piston are from direct metal to metal contact from the piston rubbing directly against the sleeve. The only thing that separates the piston and sleeve from contacting each other during normal operation is something called the "film strength" of the lubrication package in the fuel you used. That is in essence a very thin layer of oil which is formed by the molecules of the lubricant basically sticking to each other. When there is a lack of oil from for instance the engine being run too lean, the engine is run too hot or low quality lubricants are used in the fuel then you can experience a "film strength" failure which as mentioned above will result in direct metal to metal contact and you would then get the scoring/vertical scratches on the side of your piston as evident in your picture. C) If you take a look at the sleeve in the background of the picture you will note that there is staining evident on it. This is pretty normal to see in engines that have a few gallons through them and generally is evident around the intake, boost and transfer ports, areas that are in direct contact with the air/fuel mixture. The interesting thing though about what we are seeing though is that you mentioned that your engine only has less than 1/2 a gallon though it, so normally we would not expect to see little if any staining from fuel that early. Secondly the area of the sleeve shown in the picture is actually the exhaust port side, so normally you would not have fuel staining present there anyway because well it's not in contact with raw fuel. I would also normally not expect to see a black ring of carbon build up visible right around the edge of the exhaust port with only less than 1/2 gallon having been run through the engine. That is imho one of the major "tells" that shows us what is going on here! That carbon build up is as explained above from the castor oil in the fuel getting hotter than it can basically handle and exceeding it's flash point and what you would at first assume is "fuel staining" of the sleeve around the exhaust port is actually discoloration of the metal from heat! If you look closely you will notice that there are actually a couple rings of discoloration radiating out with the exhaust port at it's center. So that should give you a pretty good idea of just how hot the sleeve got right there! So based on all of the above it's pretty clear to me that one of two things happened: a) It was run too lean and the piston nearly seized. or b) There was an issue with the lubricant package in the fuel. Specifically you experienced a film strength failure that resulted in the associated localized hot spots and direct metal to metal contact of the piston/sleeve. I hope that helps clarify what is going on here, at the end of the day though this as mentioned was not an issue with our engine, it was a fuel or tuning related issue. Let me know if you have any questions about any of the above? Ron |
Hey Thanks for the replies guys! And thanks for the great info there Ron.. Iv never ran this fuel package before "20/10" but maybe I'll rethink what I run. So odd, iv never had a issue with my other b5's or any nitro engine really...
|
Originally Posted by speedworks
(Post 15323537)
Hey Thanks for the replies guys! And thanks for the great info there Ron.. Iv never ran this fuel package before "20/10" but maybe I'll rethink what I run. So odd, iv never had a issue with my other b5's or any nitro engine really...
|
| All times are GMT -7. It is currently 05:22 AM. |
Powered By: vBulletin v3.9.3.9 Patch Level 3
Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.