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-   -   The New Werks B5 .21 Racing Engine (https://www.rctech.net/forum/offroad-nitro-engine-forum/319017-new-werks-b5-21-racing-engine.html)

smb17 01-03-2010 06:59 PM

I haven't seen anyone say one bad thing about the B5. I love mine.

markhat250 01-03-2010 08:31 PM

Anyone (Ron) know where to get the end set screw for the new 2013 pipe? Mine came out first run (my fault). Part number?

markhat250 01-03-2010 08:37 PM

Just curious, I've heard some people use steel flywheels to smooth out the idle and make it more consistant. Any comments? Mine idles ok I guess, but I don't have that perfect surety that it will stay there. I get nervous walking to the driver's stand sometimes. Maybe that's just nitro though and I realize that it could be a lot factors. Just curious about the steel flywheel is all.

smb17 01-03-2010 08:43 PM

Yeah I run the steel flywheel. It makes the idle nice. Seems to smooth out the power band. It's worth a try.

heidmann1 01-04-2010 08:55 AM

I run standard alum flywheels and all my B5's idle perfect. I can take my time up the drivers stand and talk to someone along the way..lol...and its still idling everytime when I get up to the stand...And I do not have them super lean on the bottom either. For me they have always idled amazing even if bottom needle is a little rich............What plug are you using> I use OS P3

And these engines power wise have a lot of it up there with the top(and expensive) engines. It's powerband is controllable, power is insane on bottom and on top.

Werks 01-04-2010 09:29 AM


Originally Posted by markhat250 (Post 6802365)
Anyone (Ron) know where to get the end set screw for the new 2013 pipe? Mine came out first run (my fault). Part number?

Markhat250, the set screws used in the end of the pipes are nothing unique and not something that we sell loos. They are off the top of my head I think 3mm grub screws. If you take a look they are probably something that you have left laying around from some kits that you built. Otherwise I know that you can get them from your local hardware store in packs of 3 or 5 for like a buck or so. Hope this helps!

Werks 01-04-2010 09:37 AM


Originally Posted by markhat250 (Post 6802400)
Just curious, I've heard some people use steel flywheels to smooth out the idle and make it more consistant. Any comments? Mine idles ok I guess, but I don't have that perfect surety that it will stay there. I get nervous walking to the driver's stand sometimes. Maybe that's just nitro though and I realize that it could be a lot factors. Just curious about the steel flywheel is all.

There should not be any problem getting a smooth, consistent idle. If your not seeing this look back a bit and find the write up that I did no the break in method that I use. Skip all of the break in stuff and just set the idle screw (air gap), then the LS then the HS and then go back and re-set the LS using the instructions that I gave. If this sounds confusing it will make sense when you read what I wrote.

Regarding steel flywheels, while they will make the engine idle smoother by eliminating some of the surging because of the increased mass the predominate reason the use these is to smooth out the power band specifically how aggressively an engine accelerates.

Regards,

Ron

markhat250 01-04-2010 10:25 AM


Originally Posted by heidmann1 (Post 6804218)
What plug are you using> I use OS P3

I use the O'donnel 97t.

I own two B5's and a B7pro. I almost feel like these engines need a hotter plug. I don't dispute it because of what everyone says here. When my motors are running good they temp at 180 or so. I realize my gun could be off.

Long story short.....has anyone experimented with a hotter plug? Is the 99t the next hotter plug? Is that how it works?

underway 01-04-2010 10:37 AM

I think the OS P3 is as hot as it gets! Not an OD plug but what I use and it just works.

Alan D. 01-04-2010 10:40 AM

If you want to stay with O'Donnell pulgs the hottest plug they make is the 77t. 99t is a cold plug.

markhat250 01-04-2010 11:43 AM

I don't know if I want to get the "hottest" plug, just thought something a little hotter could benifit. Just speculating. Maybe the 97t is on the money. I was only saying I felt it may not be. It feels like these motors want just a titch hotter plug.

jmudbug 01-04-2010 02:11 PM

how is the #5 werks plug compared to the os plugs?is it as hot as the p-3 or a little less like the p-4?

Werks 01-04-2010 04:21 PM


Originally Posted by jmudbug (Post 6805512)
how is the #5 werks plug compared to the os plugs?is it as hot as the p-3 or a little less like the p-4?

Our Werks #5 plug is slightly hotter than an OS P3 and our #6 is slightly colder. We normaly run the #5 or #6's in our engines.

markhat250 01-04-2010 05:12 PM

So if it goes like this (Werks #6 being the coldest, #5 hottest), where does the O'Donell 97t fall? Better yet, the 77t as well. I realize this may be a test that nobody has actually done.

Werks #6
OS P3
Werks #5

I ordered some O'donnell 77t's just for kix. I'll let everyone know what I think when I run them back to back with the 97t this weekend.

heidmann1 01-04-2010 05:34 PM

hotter plug's tend to give a better idle. So why dont you try a OS p3 or a Werks #5 or #6.I have run all 3 and Thats i my opinion the best plug choice's for the werks engines. They also last longer than the Odonnell plugs, at least for me they did.


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