Help - RG50 Boyesen Reeds

[Buddha#81:Me]

when it says no restriction but restricted to I think it is to restrictive

so is it restricked or is there NO RESTRICTION

so is it restricted or not

Depends if the chokes on or not!

[Buckets4Me]

so I think you can take an rg50
slap in an rs125 piston as long as it's less than 100cc displacement watercooled
or 125 aircooled slap on an rs125 carb as a 100cc
and go racing
but you can't fit the rs125 gearbox to the rg50
or use an rs125 crank or conrod


anyway what about a champion sparkplug made for the rs125
or ngk
how about the coil and lead ?????????
how about the screws that hold it together
or the bearings ????????
all could be considered restricted


I know I know I'm a prat come on screw's ??? who would know
but they could be lighter give you more HP

[Buckets4Me]

thats it I'm building a rota for the next bike

now how do we work out cc's on that

it's all ben a bit of fun but I would like to know weather
performance parts for road bikes is allowed or not
I havent seen a rule that say's you cant use aftermarket parts on
a road bike

[Buckets4Me]

10-15-2 Rotary combustion (Wankel Patent): Capacity of one working chamber in cubic
centimetres, multiplied by number of rotors, multiplied by two.

got it now to the enginering shop

[Buddha#81:Me]

so I think you can take an rg50
slap in an rs125 piston as long as it's less than 100cc displacement watercooled
or 125 aircooled slap on an rs125 carb as a 100cc
and go racing
but you can't fit the rs125 gearbox to the rg50
or use an rs125 crank or conrod

There is a RS/MB down here running CR125 pistons......KT100 kart pistons are commonly used. Nice troll though B4me.....I'm sure someone will be along soon to have a crack at ya.

[Skunk]

no it says there is to be NO RESTRICTION ( it says you cant use {motors} or {transmition parts} )

Engines must be derived from non-competition motorcycles. Motocross, Road Racing,Enduro and Go Kart motors and transmission parts are not permitted. There shall be no restriction on the make, type or design of carburettor, ignition, exhaust, piston, cam, valve springs or cooling system except for class eligibility.

I read it as one statement - as in all inclusive, Motors being motors including the carbs etc; the 'no restriction' being a sub-statement meaning the carb can come from a different non-competition bike.

But then you could be right. I know F5 Dave went to a lot of trouble to avoid using 'special' reeds...

[F5 Dave]

I guess it is always a problem with rules, they can be argued.

We’d always taken the approach that you started with a road based engine, or on the fringes a farmbike, but certainly not a competition engine or parts there-from.

However there was always open use of exhaust, carbs, ignition (so stator to plugs is ignition) & cooling. Later this was relaxed to include open pistons so people could buy larger pistons to keep worn old 100s going using Wisecos etc. Then for some reason cams were made open, I understand because it was ok to pay to have a std cam built up & ground to the same megacycle spec CB125 cam, but it cost more than just buying one.

So I’ve always took it as engine is in between the carb & the exhaust, that would tend to include the reedblock & thus the reeds I would have thought. Pistons being the exception, but specifically mentioned for above reason.

& frames, brakes, tyres etc have always been open.


-Aftermarket parts, well that can get sticky. One could say a Lonchin is an aftermarket CG145.

But on the other extreme one could say one of those aftermarket big bore replacement top end for an exotic 50 is merely a replacement road part. I don’t think so.



By the way I wouldn’t waste your time on Boysens even if they were legal.

[TZ350]

.

Consensus is "No" so no it is.

Now I am thinking about why I was going to use Boysen reeds, I was blinded by advertising hype and fell into the chromed dipstick trap where anything shiny must make it go faster, right! especialy if it cost $$$.

I was lazy and not thinking about the science of it all. Like if you want top end you need a stiffer reed and for low end a softer one but you can't have it both ways. Like the Boysen dual reed??? as one or the other reed will flutter and/or be unresponsive when run outside of its operating range.

I need to find out more about what material and thickness reed will suit my planed application best.

Brains and investigation versis Advertisng claims.

[Buckets4Me]

so the kitted out streetmagic with the 70cc topend and pipe cant be used in f4

you can use standard suzuki hot up parts but not another maker ????

or no hot up parts at all ????????

I'm still confused but I take it then you cand use aftermarket stuff AT ALL
unless it's carb piston etc

[Buckets4Me]

I guess it is always a problem with rules, they can be argued.

We’d always taken the approach that you started with a road based engine, or on the fringes a farmbike, but certainly not a competition engine or parts there-from.



-Aftermarket parts, well that can get sticky. One could say a Lonchin is an aftermarket CG145.

But on the other extreme one could say one of those aftermarket big bore replacement top end for an exotic 50 is merely a replacement road part. I don’t think so.



By the way I wouldn’t waste your time on Boysens even if they were legal.

I hear you I do
but it's that I just dont know when to shutup

what about clutch baskets and clutches
I can understand the thing about bigbore barrel kits from Italy etc
and if I could find one designed for the rg50 I would try and bend the rules
so I could have a fire breathing rg100
but what about getting a replacement barrel and head for an rg400 and fitting that it's a road bike part but from another maker ????

it really sounds like you should only use stock parts or raw material
and then I would argue that carbon fiber is for race bikes so you cant make
reads out of that
etc etc

I know I'm being a dick but it's a question I would like answered
and if you handmake stuff for it then is that not race gear you are using ????

whats wrong with buying ready made stuff ?????? it's all for a road bike
it's not like there is any racing parts on there at all apart from the second hand slicks

[Skunk]

My boundary is like this: road going parts machined and modified 'by hand' except for 'carburettor, ignition, exhaust, piston, cam, valve springs or cooling system' specifically. Does not include reeds, conrods etc. That's how I take it and what I do.

[Buckets4Me]

My boundary is like this: road going parts machined and modified 'by hand' except for 'carburettor, ignition, exhaust, piston, cam, valve springs or cooling system' specifically. Does not include reeds, conrods etc. That's how I take it and what I do.

sounds fair but an rg50 is a road bike
and Boyesen do reeds for them
is it a race part or not
ok it makes it go faster but is that enough to call it a race part and not a road part ???
dose anyone else race rg50's anywhere in the world
can you buy race parts off the shelf ????
I'm not talking reads designed for a rs125
but ones designed for an rg50 road bike

[Buckets4Me]

I'm taking it as I'm NOT allowed them so I wont use them !!

I have a rotary valve gp125 as well and it's a dam sight faster then the rg50


but i still argue that it is within the rules to use them as they are for a road going rg50
as no one ever raced these bike in a major way or made dedicated race parts for them
that I know of

[RMS eng]

when i did some dyno testing a few years ago and putting boysen reeds in my RG50, made it lose a little power.some road bikes run the same reeds as MX bikes, so you could get some of them and cut to fit.just check part numbers.i may have some reeds,if you don't find any.09 817 9500 chris.also have some good deals going on castrol oils.

[Skunk]

I'm taking it as I'm NOT allowed them so I wont use them !!

Push to point and see if someone can get a definite ruling (or get a ruling from MNZ). Not in the spirit of the class but if you REALLY want to know... As RMS says - there may be no advantage; and as you say - they are a replacement part. Who knows how other people may take it. Whoever you beat MAY have sour grapes over it.
We let Loncin's race but considering what they are I personally don't have an issue. Someone else might.