RB Concept Engine Thread
#287
Tech Apprentice
Joined: Sep 2008
Posts: 87
how do i put a rb concept tm928 i my lst2? i found a good deal on rcplanet.com for the engine, pipe, and manifold for $395.00 but the manifold looks like a buggy style one and the lst2's manifold is not like that. i know this is a popular engine for the lst2 just dont know enough i guess. any info will be appreciated and helpful. thanx, clay unruh:
#288
Tech Apprentice
Joined: Sep 2008
Posts: 87
im looking to buy a rb tm928 w/ roto-start conversion. i found a good deal at rcplanet.com. they have the engine by itself and they have a combo which comes w/ a pipe and manifold i guess its the recomended pipe for the928. i cant remember off hand what the spec # is. anyway you think i should go w/ that pipe or would somthing like the jp-3 be a better chioce. or somthing else? i like the jp line of pipes a whole lot. but i want to have the correct set-up not some fu@#$# upset up that isnt right. .im doing some serious bashing and a little racing w/ friends. if that matters. experienced rb guys only. thanx clay unruh
#289
http://rcspecial.com/news/?p=14715#more-14715
I think they meant 1/10 and 1/8 not 1/10 and 18?
I'd like to keep track of what RB is doing this year. I was going to get an S5 for the 2009 season but since OS fixed my VG under warranty and I took a paycut at my job I'll be lucky to just break it in and buy fuel this season. I still want to keep track of RB as they will 99% be likely to be my next engine whenever that may be 2009, 2010?
What's the scoop on the new engines?
I can only find the pictures I posted, no news. Is it possible that they are a 9 port engine?! I'm guessing that may just as likely be a year 2009 designation (.9 in the name of the engine). The 3 offroad engines are the B.9, WS.9, and S.9 if you look at the business cards in front of each.
I think they meant 1/10 and 1/8 not 1/10 and 18?

I'd like to keep track of what RB is doing this year. I was going to get an S5 for the 2009 season but since OS fixed my VG under warranty and I took a paycut at my job I'll be lucky to just break it in and buy fuel this season. I still want to keep track of RB as they will 99% be likely to be my next engine whenever that may be 2009, 2010?
What's the scoop on the new engines?
I can only find the pictures I posted, no news. Is it possible that they are a 9 port engine?! I'm guessing that may just as likely be a year 2009 designation (.9 in the name of the engine). The 3 offroad engines are the B.9, WS.9, and S.9 if you look at the business cards in front of each.
Last edited by bjr48; 02-05-2009 at 09:27 AM.
#290
Hello thread,well i think i officially just trashed my $280 engine before i even got to enjoy it.wonderful.Heres the deal.I just bought the s7 l2g .21 and i put it in my brand new hyper 9.I go to start it for the first time at factory settings and the damn thing wont turn over.I thought maybe i flooded it and took out the glow plug to check but a really foul smelling smoke came out and tok my breath away.Turns out i was cranking on the flywheel for a while and the fuel was never going to the engine for some unknown reason.Is it common for these engines to come from the factory not set right on the carbuartor?I finally got fuel to the engine and it just will not turn over for any reason.I loosened up the glow plug thinking theres just to much compression and to help.Any ideas?I just dont want to mess with the factory settings if i dont have to.Lots of dry smoke coming from the engine while trying to start though ;-(
#291
Hello thread,well i think i officially just trashed my $280 engine before i even got to enjoy it.wonderful.Heres the deal.I just bought the s7 l2g .21 and i put it in my brand new hyper 9.I go to start it for the first time at factory settings and the damn thing wont turn over.I thought maybe i flooded it and took out the glow plug to check but a really foul smelling smoke came out and tok my breath away.Turns out i was cranking on the flywheel for a while and the fuel was never going to the engine for some unknown reason.Is it common for these engines to come from the factory not set right on the carbuartor?I finally got fuel to the engine and it just will not turn over for any reason.I loosened up the glow plug thinking theres just to much compression and to help.Any ideas?I just dont want to mess with the factory settings if i dont have to.Lots of dry smoke coming from the engine while trying to start though ;-(
#292
Hello thread,well i think i officially just trashed my $280 engine before i even got to enjoy it.wonderful.Heres the deal.I just bought the s7 l2g .21 and i put it in my brand new hyper 9.I go to start it for the first time at factory settings and the damn thing wont turn over.I thought maybe i flooded it and took out the glow plug to check but a really foul smelling smoke came out and tok my breath away.Turns out i was cranking on the flywheel for a while and the fuel was never going to the engine for some unknown reason.Is it common for these engines to come from the factory not set right on the carbuartor?I finally got fuel to the engine and it just will not turn over for any reason.I loosened up the glow plug thinking theres just to much compression and to help.Any ideas?I just dont want to mess with the factory settings if i dont have to.Lots of dry smoke coming from the engine while trying to start though ;-(

that smoke is coming from the rubber wheel of your starter box. It's melting while trying to move your flywheel.
As for the engine, your piston is stuck at top dead center, which is common for new engines.
Take a screw driver pry your fly wheel loose, then heat the engine up with a blow dryer to about 80°C and then try to start it again.
When starting, put your finger to close the exhaust tip for a few seconds to pump fuel into the engine.
#293
I'm looking to get a new engine for this year in my 8ight 2.0 buggy. I'm trying to decide between the S5, S7, or WS7. I have an RB 2045 pipe and 192 header that I would like to use, but I would buy a new pipe if the engine choice called for it.
I'm still fairly new to nitro so I'm looking for durability and reliability first and second, performance would be third on the list. Most of the tracks I'll be racing on are medium to large - for example The Farm 2 is a few miles from my home and will be open for club races this year. That of course is the largest track I'll be racing on, with the others going down to about half that size.
I would really like more low end which makes me look to the S5, but I wonder if that will have the pull on these bigger tracks. Better fuel milage would be good too, I'm not a great driver so if I can make up some time by getting one less pit stop I could use that help.
My first nitro engine was an S7 (older model) that I bought used with about 3 gallons on it. I put on another 4 without hardly ever touching the tune and that durability and ease of tune is what I loved most.
So I guess what I'm asking is what model do you think is best for me? The price difference between the three is neglible to me, although cheaper is always better. What pipe and plug combo works with each model would be great information too!
Side question - I've heard ceramic bearings are a good improvement. I was considering swapping both bearings for TKO ceramics after about a gallon of break in, any pros or cons to that?
THANKS!
I'm still fairly new to nitro so I'm looking for durability and reliability first and second, performance would be third on the list. Most of the tracks I'll be racing on are medium to large - for example The Farm 2 is a few miles from my home and will be open for club races this year. That of course is the largest track I'll be racing on, with the others going down to about half that size.
I would really like more low end which makes me look to the S5, but I wonder if that will have the pull on these bigger tracks. Better fuel milage would be good too, I'm not a great driver so if I can make up some time by getting one less pit stop I could use that help.

My first nitro engine was an S7 (older model) that I bought used with about 3 gallons on it. I put on another 4 without hardly ever touching the tune and that durability and ease of tune is what I loved most.
So I guess what I'm asking is what model do you think is best for me? The price difference between the three is neglible to me, although cheaper is always better. What pipe and plug combo works with each model would be great information too!
Side question - I've heard ceramic bearings are a good improvement. I was considering swapping both bearings for TKO ceramics after about a gallon of break in, any pros or cons to that?
THANKS!
#294
I'm looking to get a new engine for this year in my 8ight 2.0 buggy. I'm trying to decide between the S5, S7, or WS7. I have an RB 2045 pipe and 192 header that I would like to use, but I would buy a new pipe if the engine choice called for it.
I'm still fairly new to nitro so I'm looking for durability and reliability first and second, performance would be third on the list. Most of the tracks I'll be racing on are medium to large - for example The Farm 2 is a few miles from my home and will be open for club races this year. That of course is the largest track I'll be racing on, with the others going down to about half that size.
I would really like more low end which makes me look to the S5, but I wonder if that will have the pull on these bigger tracks. Better fuel milage would be good too, I'm not a great driver so if I can make up some time by getting one less pit stop I could use that help.
My first nitro engine was an S7 (older model) that I bought used with about 3 gallons on it. I put on another 4 without hardly ever touching the tune and that durability and ease of tune is what I loved most.
So I guess what I'm asking is what model do you think is best for me? The price difference between the three is neglible to me, although cheaper is always better. What pipe and plug combo works with each model would be great information too!
Side question - I've heard ceramic bearings are a good improvement. I was considering swapping both bearings for TKO ceramics after about a gallon of break in, any pros or cons to that?
THANKS!
I'm still fairly new to nitro so I'm looking for durability and reliability first and second, performance would be third on the list. Most of the tracks I'll be racing on are medium to large - for example The Farm 2 is a few miles from my home and will be open for club races this year. That of course is the largest track I'll be racing on, with the others going down to about half that size.
I would really like more low end which makes me look to the S5, but I wonder if that will have the pull on these bigger tracks. Better fuel milage would be good too, I'm not a great driver so if I can make up some time by getting one less pit stop I could use that help.

My first nitro engine was an S7 (older model) that I bought used with about 3 gallons on it. I put on another 4 without hardly ever touching the tune and that durability and ease of tune is what I loved most.
So I guess what I'm asking is what model do you think is best for me? The price difference between the three is neglible to me, although cheaper is always better. What pipe and plug combo works with each model would be great information too!
Side question - I've heard ceramic bearings are a good improvement. I was considering swapping both bearings for TKO ceramics after about a gallon of break in, any pros or cons to that?
THANKS!
I would go with the S5. Maybe put a turbo head on it from the WS7. Really the engine that worked well at the farm was the Novarossi +4. Its about the same thing as Rb quality wise.
I'd stick to Rb/Novarossi bearings. They hold up well. I got 7 gallons on mine.
Get an S5 and run it into the ground. I've seen the bearings, conrod, piston,sleeve all go 11 gallons with basic maintenance. No parts replacement! Okay maybe thats a stretch for most but don't just throw parts at a Rb make sure thier worn first.
2045 pipe or Dynamite 053, I keep a selection of plugs med-hot. Sidewinder 20%nitro 12% oil.
#295
Tech Adept
Joined: Mar 2003
Posts: 226
From: Tallinn, Estonia
Hi all,
I'll be switching to RB .12 (the new T.9, which seems to be essentially the same as the R3, only with a different cooling head) after running LRP engines for several years and I'm wondering which pipes would work well? RB itself seems to offer only one pipe, the EFRA #2604, I suppose this would work OK, but are there other good or better options? With the LRP (=Picco) engines I ran either Picco #2607 or LRP #2644 pipe.
Please share your experience.
I'll be switching to RB .12 (the new T.9, which seems to be essentially the same as the R3, only with a different cooling head) after running LRP engines for several years and I'm wondering which pipes would work well? RB itself seems to offer only one pipe, the EFRA #2604, I suppose this would work OK, but are there other good or better options? With the LRP (=Picco) engines I ran either Picco #2607 or LRP #2644 pipe.
Please share your experience.
#297
So I took my Hyper 9 to the track today for the forst time and I have a S7 L2G.I was running at 165 so I leaned it out around 1/4 turn.I then noticed performance suffering mitaly so I pulled er in and was running at 345F!!!!!!!WTF!!!Now,i only have 1/2 gallon through the engine.Is it trashed???Be honest.By,the way it was running at 345F for aprox 7 mins.



6Likes