Palmaris engine thread
04-13-2005, 10:09 AM
#1606
Originally posted by 4racer
hi edward,
at my home track the temp is in the moment around 15°c, i have shimmed the engine to 0.3mm headclearence and run with a 6tc plug. the temp is around 100°C on the topfin from the head. (spy test)
i set the engine like a original, what i read i must change to the brb set with leaner bottom and richer top
dieter
hi edward,
at my home track the temp is in the moment around 15°c, i have shimmed the engine to 0.3mm headclearence and run with a 6tc plug. the temp is around 100°C on the topfin from the head. (spy test)
i set the engine like a original, what i read i must change to the brb set with leaner bottom and richer top
dieter
Yes, I will suggest so. Leaner on bottom and reacher on top-it even have much beter milage.
Also, 100C is little bit too low for BRB. Due to the expantion rates the best performance was found 105-120 C
Edward
04-13-2005, 10:13 AM
#1607
Originally posted by Marcos.J
if you add a .1mm shim to the .3mm shim running with 30% will that give you more top end?
if you add a .1mm shim to the .3mm shim running with 30% will that give you more top end?
04-13-2005, 10:28 AM
#1608
Originally posted by Top Gun 777
Yes it will, but for sure we are talking about 30% nitro content, if less % it will eat out bottom end and idle will unpredictable. So in every single particular case, head shimming needs to e adjusted. For instance, in Las Vegas you will not get away with stock shimming for sure.
Yes it will, but for sure we are talking about 30% nitro content, if less % it will eat out bottom end and idle will unpredictable. So in every single particular case, head shimming needs to e adjusted. For instance, in Las Vegas you will not get away with stock shimming for sure.
04-13-2005, 10:41 AM
#1610
Head clearance
Originally posted by Top Gun 777
In Florida you should be on the edge with 0.4mm shimming, but with BRB, I am not sure about original-never run them. Do you have BRB?
In Florida you should be on the edge with 0.4mm shimming, but with BRB, I am not sure about original-never run them. Do you have BRB?
What head clearance would you run for BRB .21 and .12 on 30% fuel in Vegas? Are you going to Vegas?
Thanks,
Brad
04-13-2005, 10:48 AM
#1612
Originally posted by Marcos.J
not yet trying to save the money to buy it with out my wife finding out
not yet trying to save the money to buy it with out my wife finding out
04-13-2005, 10:49 AM
#1613
Re: Head clearance
Originally posted by YBSLOW
Hi Ed,
What head clearance would you run for BRB .21 and .12 on 30% fuel in Vegas? Are you going to Vegas?
Thanks,
Brad
Hi Ed,
What head clearance would you run for BRB .21 and .12 on 30% fuel in Vegas? Are you going to Vegas?
Thanks,
Brad
I did run it last year with Daniel 21 BRB there and we end up with .7mm. It was running 240 F.
I might come down my self-Leo is last year in High school so no way he can be there. I probably will come on Saturday and Sunday.
Edward
04-15-2005, 07:28 AM
#1616
Re: Re: Head clearance
Originally posted by Top Gun 777
Hi Brad.
I did run it last year with Daniel 21 BRB there and we end up with .7mm. It was running 240 F.
I might come down my self-Leo is last year in High school so no way he can be there. I probably will come on Saturday and Sunday.
Edward
Hi Brad.
I did run it last year with Daniel 21 BRB there and we end up with .7mm. It was running 240 F.
I might come down my self-Leo is last year in High school so no way he can be there. I probably will come on Saturday and Sunday.
Edward
We end up using 0.8mm ( 30% odonnel) with Nova no 9886 pipe and Max header. We tried 0.6 then 0.7mm but just could not get the Speed up. We tried clutch , tunning and 0.8mm was way better in speed and torque. We were able to lean the engine with that setting and got the speed we want it.
We will try different pipe next week and will even try 0.9mm and see the results.
I just love to test different setting...
04-17-2005, 06:19 AM
#1617
BRB TQ
Today 2nd Round of Serpent Cup,
5 x "BRB" piston and sleeve set got to A main
MY driver also TQ with BRB and JP crankshaft
The field were mostly Max 15 with some Team engine using 7mm carb and Picco Mega 15. and ...
My driver TQ using FIRST GENERATION BRB.
That engine have been raced used so many times that I cannot remember. I only changed bearing, crankshaft and conrod once but that piston and sleeve is still the first generation.
BRB set the standard
no doubt
5 x "BRB" piston and sleeve set got to A main
MY driver also TQ with BRB and JP crankshaft
The field were mostly Max 15 with some Team engine using 7mm carb and Picco Mega 15. and ...
My driver TQ using FIRST GENERATION BRB.
That engine have been raced used so many times that I cannot remember. I only changed bearing, crankshaft and conrod once but that piston and sleeve is still the first generation.
BRB set the standard
no doubt
04-17-2005, 07:36 AM
#1618
Re: BRB TQ
Originally posted by kitracer
Today 2nd Round of Serpent Cup,
5 x "BRB" piston and sleeve set got to A main
MY driver also TQ with BRB and JP crankshaft
The field were mostly Max 15 with some Team engine using 7mm carb and Picco Mega 15. and ...
My driver TQ using FIRST GENERATION BRB.
That engine have been raced used so many times that I cannot remember. I only changed bearing, crankshaft and conrod once but that piston and sleeve is still the first generation.
BRB set the standard
no doubt
Today 2nd Round of Serpent Cup,
5 x "BRB" piston and sleeve set got to A main
MY driver also TQ with BRB and JP crankshaft
The field were mostly Max 15 with some Team engine using 7mm carb and Picco Mega 15. and ...
My driver TQ using FIRST GENERATION BRB.
That engine have been raced used so many times that I cannot remember. I only changed bearing, crankshaft and conrod once but that piston and sleeve is still the first generation.
BRB set the standard
no doubt
I guess now everybody can see where the power located-not in the cuts and numbers of ports. Still first generation? Even by my best calculation should be over a while ago.
Edward
04-17-2005, 09:41 AM
#1619
Tech Fanatic
new sts 21 onroad
Hi Ed, i heard from the grapewine that the new STS 21 onroad beging tested is using the BRB piston and sleeve. Pls advise if that is true ? thxs
04-17-2005, 10:03 AM
#1620
Re: new sts 21 onroad
Originally posted by speedy100
Hi Ed, i heard from the grapewine that the new STS 21 onroad beging tested is using the BRB piston and sleeve. Pls advise if that is true ? thxs
Hi Ed, i heard from the grapewine that the new STS 21 onroad beging tested is using the BRB piston and sleeve. Pls advise if that is true ? thxs
I have no idea if this is correct, but will not be surprize. I have no any ties with STS.
I know that STS got some piston material from Russia and they are testing it, but again have no idea about BRB.
The good thing about any testing with BRB, that I am first who brought this composion to RC cars and over the 1.5 year we did made a lot of testing and developments, so everybody else has to go throught the same process and this is what called "chasing the tail". There is no way any manufacturer will be repeat our lay outs and materials, so they will need to go through their own developing process.
As I have told before we are right now finishing test Bi-metall set up (just for info-first time ever-not in real engines, not in RC engines bi-metall was use or even tested) and results are ammazing. It will take a while before it will be available (3-6 month). This is will be next step for "chasing the tail".
Edward