View Full Version : Legal pipes and engines?
Northy
05-11-2007, 06:49 PM
What does a pipe need to be legal?
I need an engine. What do people suggest?
Cheers,
G
picco are good dude, get a starter box and a non-pull start one, less faffing about.
Pipe has got to been passed for noise, I think it has an EFRA stamp on it (or has to have a stamp on it for BRCA)
I have the RB C6BB T7 all i can say is, its an animal.:D
RogerM
05-11-2007, 09:44 PM
Have a look on the www.s-m-d.co.uk (http://www.s-m-d.co.uk) site.
The Go 7 porter is the equal of anything out there at the moment and about half the price of most!
Whilst your there you'll find the pipes that most of the guys running at the sharp end of the nationals are using, again fantastic value!
bigred5765
05-11-2007, 10:51 PM
i would recommend getting in touch with Jamie booth at smd as well, the go 21 pro engine is ace ether the 5 or 7 port both work great, he also has a efra legal pipe very cheap very good
showtime
05-11-2007, 11:02 PM
Graham
i'd say wait for now before buying a pipe as there are new EFRA specs for next year! pretty much ALL the pipes in use at the moment will be illegal according to the construction specs submitted to the pipe manufacturers!
have a look on the pdf http://www.efra.se/news/download/2007_Muffler_letter_Sept-2007V2.pdf
as far as i know the BRCA will give us a years grace on using the new pipes like they did when the 3 chamber ruling came into effect in 2005 ;)
it really depends on where you plan on racing really?
club racing - you can get away with pretty much anything
BRCA Nationals - prob use existing 3 chamber pipes in 2008 but have to use new ones the year after (need official confirmation on this)
EFRA sanctioned events - you'll need a new pipe made to the new specs!
nothing published from last weekends EFRA AGM yet?
as for engines the Go are spot on for the money, a few quid more will get you a Novarossi Sirio or RB! any of those would be a good choice ;)
damo666
06-11-2007, 03:37 PM
Basically unless your doing nationals you can run anything you like.
As for engines the go range are good but i've not seen many go for more than 3 gallon before needing a P+L.
For the money the #OS vspec @ £150 uk or £130 HK takes some beating
Whats the engine for......buggy or truggy?
Northy
06-11-2007, 05:50 PM
The engine is for a Losi 8ight buggy :D and I'm hoping to do the Neo and maybe some nationals next year.
If we talk about comparing them to a brushless motor, I'd prefer something more like a 6.5 (5.5 maybe) rather than a 4.5 or 3.5. I prefer easy to drive to balls out power.....
Cheers,
G
damo666
06-11-2007, 07:27 PM
Easy to drive = v spec,rb ws7 (not c6bb) imho, both these have a nice linear power band not to aggressive bottom end.
Depends how much you want to spend, also i don't know if you will need an efra pipe for the neo as its not a brca national event.
showtime
06-11-2007, 08:37 PM
i'm not 100% sure if there will be any technical inspection at Neo08 but don't go assuming there wont as it has been discussed because of the 10 minute qualifiers!
in the past pipe choise at Harper has always been open as noise isn't an issue but Graham said he wanted to do some nationals next year so really his pipe needs to at least conform to the required spec for those meetings ;)
as for the 10 minuite qualifiers without scrutineering everyone clever enough to do so will obviously use a truggy tank however with scrutineering you'll need an engine that can do the 11 plus minutes needed as you need an out lap & an in lap! obviously you could pit for fuel but losing the stop with a 10 minute engine would be quite a good advantage! bit risky on a std tank but not impossible!
it'll ceretainly keep things interesting :eh?:
Graham
i'd say wait for now before buying a pipe as there are new EFRA specs for next year! pretty much ALL the pipes in use at the moment will be illegal according to the construction specs submitted to the pipe manufacturers!
have a look on the pdf http://www.efra.se/news/download/2007_Muffler_letter_Sept-2007V2.pdf
as far as i know the BRCA will give us a years grace on using the new pipes like they did when the 3 chamber ruling came into effect in 2005 ;)
Does anyone know how much EFRA are hoping to reduce the noise by in quantitative terms, the closest they get is "a number of decibels"?
What sound pressure levels are the current pipes allowing?
Thanks.
showtime
10-11-2007, 01:27 PM
i think in the original item they mentioned 90db?
but as far as offroad go's, many if not all our tracks in the UK are in out of town locations with minimal chance of disturbing the neighbours!
i thought it was the sound of the PA systems that were the cause of most issues?
i think in the original item they mentioned 90db?
but as far as offroad go's, many if not all our tracks in the UK are in out of town locations with minimal chance of disturbing the neighbours!
i thought it was the sound of the PA systems that were the cause of most issues?
90dB for the current or proposed level? Wikipedia claims that is sufficient to cause hearing damage under long-term exposure!
I'm not a RallyX racer so don't know the main source of contention, i.e. PA system or the cars themselves. However, someone at my club was breaking in the engine for a 1/8 buggy and boy was it loud, I don't know how people stand racing them all day! From my brief experience I can see why EFRA are keen to curb the nosie levels of the cars.
Northy
10-11-2007, 03:58 PM
90dB will damage your hearing, but you said the magic word - exposure. It all depends on the length of time you are subjected to the noise.
G
showtime
10-11-2007, 04:57 PM
try 4 days indoors next Easter :D
90dB will damage your hearing, but you said the magic word - exposure. It all depends on the length of time you are subjected to the noise.
G
If I said it, why did you need to repeat it? ;):D
Decibel figures can be misleading as, amongst other things, it depends on the reference level and distance from the source.
It wouldn't be so bad if they sounded like a throaty V8 or similar :). Unfortunately small two-stroke engines revving at 30,000rpm+ don't make the most appealing sound. Just my opinion.
try 4 days indoors next Easter :D
Is that the Neo race? They do some awesome looking tracks at that event :)
showtime
10-11-2007, 05:56 PM
thats the one :D
a few more names were added to the awaiting confirmation list earlier so if you've tried for an entry check your emails ;)
mine was in my junk folder :eh?:
Mine seems silly loud, i have an efra pipe, but when i start it up in the garage, my ears are ringing for a bit after.
It benefits me though, i cant hear her moaning for a while afterwards:D
thats the one :D
a few more names were added to the awaiting confirmation list earlier so if you've tried for an entry check your emails ;)
mine was in my junk folder :eh?:
I've not entered, I don't even have a buggy to race. Judging by Jimmy's previous coverage you should have a blast when the time comes.
Mine seems silly loud, i have an efra pipe, but when i start it up in the garage, my ears are ringing for a bit after.
It benefits me though, i cant hear her moaning for a while afterwards:D
Every cloud has a silver lining :D
showtime
11-11-2007, 11:23 AM
Mine seems silly loud, i have an efra pipe, but when i start it up in the garage, my ears are ringing for a bit after.
It benefits me though, i cant hear her moaning for a while afterwards:D
whats the number on the pipe you have?
the older 2 chamber pipes were pretty much all 9 numbers eg 9863, 9886 9853 etc apart from the 9901 which was a 3 chamber :eh?:
pretty much all the existing 3 chamber pipes had numbers starting with 2
2027,2047,2030,2032,2045 etc the only marked exception to this was the OS2050 which was a 2 chamber so aside from a couple of irregularities the earlier pipes were easy to categorise ;)
as for the numbers on the new deign 3 chamber pipes i suppose we just wait & see :rolleyes:
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