100 bhp please,

Must add my 2p worth.

Its not always about power, one of the most successful race engines was the Cossy
1000 screamer. I had one in an old Anglia van and the look on the faces of E type owners
as they were blown into wind on acceleration was a picture.....just a pity about axle
tramp. :D :D :D :D :D :D :D

 
andychain said:
Must add my 2p worth.

Its not always about power, one of the most successful race engines was the Cossy
1000 screamer. I had one in an old Anglia van and the look on the faces of E type owners
as they were blown into wind on acceleration was a picture.....just a pity about axle
tramp. :D :D :D :D :D :D :D
Click to expand...

Ill take that as a compliment to my mechanical prowess, somwhere in the past  :D

Ill add my 2 cents, when you get the back wheel spinning then your grinning

Not something i never achieved on a breganze,  nor would want to do, theyre not meant for that

but the gun Drymsby can, so i guess its possible

oh and if you wanna ride a Zane ;)
 
Laverdalothar said:
hochkoenig said:
Laverdalothar said:
-40mm Keihin FCR carbs with tapered inlet manifolds and powerblades in the open bellmouthes
Click to expand...

Interesting... Some Pics?
(hi)
Click to expand...

Of what - the power-blades? just google it, you will find plenty of pics...  ;)

http://www.google.de/search?q=keihin+powerblade&hl=de&client=safari&rls=en&prmd=imvnsfd&tbm=isch&tbo=u&source=univ&sa=X&ei=qcQ1UOSTEInVsgbIsoCoDg&ved=0CEIQsAQ&biw=1280&bih=851
Click to expand...

OK, nice, what you mean Tapered Inlet Manifolds?

 
Hauge said:
Never had mine on the dyno but I was very happy with it.
1130 J&E pistons from Phil, 36 mm dellortos, 4/c cams and home ported head. lots of different ignitions and 3-1-2 big bore exhaust.
Compared to other bikes from that time it should not be far.
MirageOrange.jpg

MirageOrange_0001.jpg
Click to expand...
Hauge, tell us about your swing arm.
 
Picture of Wolfgang's stainless steel 40mm headers and collector, somewhat different from a standard collector and appears to work very well on my RGS, I'm no expert but fit is good and performance appears good, nothing to compare it to ober here.
Wolfgangs%2520exhaust%2520-%25201.jpg
 
mar said:
Hauge, tell us about your swing arm.
Click to expand...

Hello!
Back then (early 90) when the Mirage was my only bike i was quite tired of the suspension. Koni and Ohlins was about the only thing you could get and non of them had all the adjustments i wanted. I decided to rebuild as a monoshock. First I made my own in square steel section but it was quite heavy. I then ordered this from a small company i Sweden (URM) who made this one of in alloy.
Very light but it tended to crack and was not as good looking (to "square") as I wanted.
I threw a rod through the case in 2002 and sold wheels, brakes and forks to Steve B. and the frame, swing and rear shock went to UK.

 
Kiwi Laverda said:
Picture of Wolfgang's stainless steel 40mm headers and collector, somewhat different from a standard collector and appears to work very well on my RGS, I'm no expert but fit is good and performance appears good, nothing to compare it to ober here.
Wolfgangs%2520exhaust%2520-%25201.jpg
Click to expand...

Have the same thing from OCT , as much i know it is make in UK. Everithing OK but when driven in rain there is rust coming out , i polish heders now and then but stailes steel and rust ?.
We cal stainles steel A2 and A4 , A2 is for normal use and will rust A4 is for ships etc. and wil not rust even in salt water .
A4 is way to go .
 
I bought this system from Wolfgang, but got the 40mm headers in chromed steel.

I think A4 is not a tough as A2 or mild steel so maybe more prone to breaking perhaps.  I think A4 bolts have a lower torque rating than A2.
 
A4 can have a slightly higher tensile strength than A2, but do not be fooled! The A4 is indeed more brittle due to the addition of molybdenum for corrosion resistance.

I have messed around with stainless and carbon steel bolts for donkies years. By far the most durable for general use is 8.8 high tensile carbon steel.

There are probably hundreds of different stainless grades, but in general they do fail in the brittle mode, especially when they flex in any direction. Properly sized they will not fail 'cos they stay loaded and do not flex much in service.
I used A2 and A4 for years in pharmaceuticals without too many problems, the worst characteristic of these little bastards is when they 'pick up' you have to saw them off or use a plasma cutter to get them off.

That said, Martensitic Stainless Steels are tougher(definition - able to absorb punishment) and have great tensile strength (I believe they all start with a 4, ex. 431 stainless).

This may explain why said exhaust can rust a little as corrossion resistance has been sacrificed in favour of toughness.



 
Kiwi Laverda said:
Picture of Wolfgang's stainless steel 40mm headers and collector, somewhat different from a standard collector and appears to work very well on my RGS, I'm no expert but fit is good and performance appears good, nothing to compare it to ober here.
Wolfgangs%2520exhaust%2520-%25201.jpg
Click to expand...

I am sorry to disappoint you, but that is (out of memory) exactly the collector I had on the Jota which produced the issue... (might be though that it works on 120? engines due to different pulse-rates...). If you look into the shape of the collector, there is one area where it is very narrow. Also take a look inside and you will find the rear tubes going into the collector instead of just being welded to it. this causes back-reflection and therewith to high pressure and heat in the collector. Mine turned purple red when we put it onto the dyno and started glowing...  :o

might be though that this was an old design - don't know. Maybe the new ones are better, mine was bought in 2000 I think. OCT and Wolfgang do share the same ressources sometimes...  ;)
 
Lothar, this is a superior quality piece of equipment compared to the standard collector, even the Corsa collector from two halves. The angels and weld finish are in a different league so I don't think, unless you have one of these exact collectors, that it's possible to make such comparisons.
 
Grant,

the welding quality and finish is NOT what I am talking about, that was superior on my collector, too. The point of MY collector was, that the SHAPE was wrong and that the two pipes that go back to the silencers (if one can call jota pipes really "silencer"...  8) ) were intruding into the collector chamber itself and that there were to many areas where the pulses simply hit "a wall"...

Take the downpipes off the collector and look into the center one of the 3 tubes while holding a torch into one of the others and you will se the quality that REALY counts: how smooth or rough does the inside look?

Maybe I can find the old collector somewhere. If so, I will make a picture of what was cut off and you can see what I mean...  ;) Not sure though, I still have it.

EDIT: I found it (had to put almost half of the trash out of the large bag I have in my workshop). Will make a picture later on and post it. It indeed looks similar but is not the same (!!) as on the pic below. Diameter is more narrow, but shape is similar while on the one from Wolfgang, the tapper from the 3 pipes down the most narrow part of the collector is longer (on my collector-part, it was just 4cm).

The headers also look the same as mine, still on the bike.
 
The venturi shape of Wolfgang's collector has been designed to overcome flow issues compared to the standard system. Maybe it isn't as good as your special 3:2 collector though.
The exit pipes don't protrude into the collector like you say.
It really is a clever piece of design.
 
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