2LikesRB Concept Engine Thread..
05-26-2011 | 01:51 PM
#2086
After you heat the engine you say that you have to blow on the line to get fuel there?? When you blow on the pressure line do you notice the fuel hit the HSN and sort of jump back toward the fuel tank? It sounds to me like your carb got really hot in the pre heat process and you are vapor locking. I have had this happen quite a few times when using heat guns to pre heat rather than the comp head heater. If this is what you are seeing you can blow thru the pressure line with the carb at full throttle until the fuel stays at the HSN and no longer jumps back away from the carb.... You should now be able to start it, but with the stock needle settings it may not just idle away on it's own, you may have to adjust some for your location.
If you do use a heat gun or hair dryer try to hold a thin piece of metal between the carb and the head while you pre heat.
If you do use a heat gun or hair dryer try to hold a thin piece of metal between the carb and the head while you pre heat.
Thanks guys.
05-27-2011 | 05:04 AM
#2088
Once again Chris you where right. as soon as i heated the motor without the carby getting to hot which wasnt as easy as it sounds, it started properly and i managed to get it to idle. I am although a bit worried about after completing the first tank i noticed and oily residue all over the low speed needle is it common for these to possibly leak from new?
Mitch
Mitch
05-27-2011 | 07:06 AM
#2089
Tech Master
Joined: Nov 2009
Posts: 1,192
From: Colorado
Well, I would say clean it off real well and keep an eye on it. When new, there is a lot of oil all over these engines as they use a lot of oil to assemble them and this may just be some of that assembly oil. The RB LSN has two orings on it and I have carbs that are 5 years old that don't leak past those two orings. Is it building up on the carb boot or at the face of the LSN where you stick the screwdriver? If at the face it may just be grease from assembling the LSN into the slide. If you don't have any cleaning putty I would suggest getting some. The cleaner you keep the outside of your engine the better, and that stuff works wonders!!
05-27-2011 | 04:19 PM
#2091
Tech Master
Joined: Nov 2009
Posts: 1,192
From: Colorado
http://www.rctech.net/forum/onroad-n...ngine-zone-71/
06-02-2011 | 07:24 AM
#2094
Tech Master
Joined: Nov 2009
Posts: 1,192
From: Colorado
The B11 is going to make more power and get better fuel mileage. The WS7 will probably rev a little higher, but the power it makes at those higher RPM's will still be less than the B11. Since the square stroke WS engines are no longer in production I would say your better off getting a B11 to make sure you can get parts if needed.
06-02-2011 | 09:33 AM
#2095
Tech Elite
Joined: Mar 2009
Posts: 4,648
From: Aurora, Colorado
The B11 is going to make more power and get better fuel mileage. The WS7 will probably rev a little higher, but the power it makes at those higher RPM's will still be less than the B11. Since the square stroke WS engines are no longer in production I would say your better off getting a B11 to make sure you can get parts if needed.
06-03-2011 | 12:29 AM
#2096
The B11 is going to make more power and get better fuel mileage. The WS7 will probably rev a little higher, but the power it makes at those higher RPM's will still be less than the B11. Since the square stroke WS engines are no longer in production I would say your better off getting a B11 to make sure you can get parts if needed.
06-03-2011 | 12:27 PM
#2097
Tech Initiate
Joined: May 2011
Posts: 29
The B11 is going to make more power and get better fuel mileage. The WS7 will probably rev a little higher, but the power it makes at those higher RPM's will still be less than the B11. Since the square stroke WS engines are no longer in production I would say your better off getting a B11 to make sure you can get parts if needed.
Regards
Daniel
MBX6 B10 efra 20 24 sanwa futaba- BUT no FUEL!!!!
06-03-2011 | 03:31 PM
#2099
Tech Rookie
Joined: Jan 2010
Posts: 16
First of all I'm sorry for my english mistakes,I'm from Brazil and only have 15,so give me a break.
Anyway,I have D8 with a RB hobby9, I only ran it two gallons.But last week I completely forgot to chek if my airfilter was decently oiled.The result,dirt in my engine and two burned glowplugs.So I got home and opened my engine cleaned everything the best way I could with my byron gen2.I don't have that much experience(neither my father) so I came here to ask what more could I do?And is the 'life' of my engine to compromised?
Final observations:I ran two or three tanks whith it that day.
Any help or coment will be very helpfull.
PS:If is a page talking about this sorry for not finding it,there are a lot of great stuffs in this forum,however is really hard to find.
Anyway,I have D8 with a RB hobby9, I only ran it two gallons.But last week I completely forgot to chek if my airfilter was decently oiled.The result,dirt in my engine and two burned glowplugs.So I got home and opened my engine cleaned everything the best way I could with my byron gen2.I don't have that much experience(neither my father) so I came here to ask what more could I do?And is the 'life' of my engine to compromised?
Final observations:I ran two or three tanks whith it that day.
Any help or coment will be very helpfull.
PS:If is a page talking about this sorry for not finding it,there are a lot of great stuffs in this forum,however is really hard to find.
06-05-2011 | 08:10 AM
#2100
Ok here is the deal. With odonell 30% (regular) in my ws7 I could get 11:00 easily and that's with a 7.5 insert in my rc8t odo 97t plug. Last night I could barely get 7 min when I ran the new 30% speed blend. It also went from 220 to 244-273 in temps. Is my tune off maybe. I also had to open the idle gap 6 hours.