Duckndive

That lobe is F##Ked

Its worth moving the coils to the same place as a 1200 Zuma as well

Loppie did one using a sealed stock airbox as well just for fun as someone said it would not work

I don't recall Dresda making swingarms ..just frame kits But yeap defiantly a Period Davida Arm .

He was on Faceache as well

Google Knows https://www.fowlersparts.co.uk/browser/manufacturer/suzuki/bike/gs550-katana/year/1981-1982/colour/all-colours

It can only fall out if you take the sprocket cover off 6mm S/Steel bar grind a dome on the ends

Even though it did ...It was a HP mod the Clue is in his name Revshotclutch also did it was an article in Superbike Mag

not much in it 4V a few Kg heaver

Even with an oil boiler in those frames are not very doing engine work friendly

To stop oil swashing away from pick up common in the later water boilers when used in sidecars

i,ll be careful when I remove it then

Similar Spec to mine Head on mine was done by Dom Trickett And i need to remove the spacer from its brief turbo & Nos Time

As I understand it "its well known that Bob was stubborn" so it was done with a bit of butchery and adjusting the engine position slightly it only need a few mm of clearance as if you look at a close up pic the frame / rear mount slightly encroached over the case ... Bob supplied a longer stiffer arm with drag slots for the revised lowered version of the bike and i think he tried a set of raked yokes in it as well Apparently when he ordered the beam frame it was built with clearance for the lockup spacer "I bet that was a very abuse laden conversation" but that said he did a lot to promote Spondon on a coax its a huge problem to overcome as the cover / engine is behind the arm pivot ... . so best not to go there Yes Jimbo with the Yellow Harris turbo had to have his frame modified for the same reason I think there's a pic on here pics are here unfortunately some the pics are photo bucket overlayed since he originally posted but still viewable and there are clear ones on page 3

Ok real world comparison my 1166 EFE forged pistons welded crank lock up proper built motor . Garrett T3 "external gate" Tractor Carb "HSR is no better in BHP stakes" this was a quick favour Tim Blakemore did for me to check the fuelling with a 6PSI spring 159BHP with top end blips on the curve "later traced to a split Dyna Coil once home" we only did the one run due to time and not wanting to take up Tims Dyno Time messing about with it ... So 10 down on the Rajay Once i had it sorted it made 175 at same boost....so a huge 5 bean better

if you look i have explained the reason for the low fig Use a modern BB snail on the same motor at 10PSI ..200 on a good day with a lock up

Agreed but you original post eluded "chuckle" to the Low HP figure of the set up... which as I said was good for what it was Bill actually skimmed over "laughed off" the low / poor ETs he ran "I,m ok with it" The Limiting factor was actually the frame "could not fit a lock up which held back the power" also an issue with later CoAx "speeling" Spondon frames The Bike was a year or two later reconfigured raked and lowered "the brick rule now being in place" new Spondon arm with slots and they managed to gain enough room to fit a lock up and spacer .. viola 220 / 240 ish bhp with same set up and mid 9,s he then bought an Ali "beam" frame which was specially built at the rear to have room for the lock up & Spacer .Given Bob was stubborn that was a miracle ..i,m sure there are pics on here some ware of both I actually lost track of USB in 87 ish marriage kids sold USB bike etc....but did attend the Long Marston rounds as on my doorstep It got very Bitchy towards the End but many went on to be successful in SSB and other classes ..and one or two still have there original USB bikes ..there is a group on faceache that occasionally gets updated

Not the roman candles you seam to think they are .... I,ve ran two road bikes with them with no issues as have many others

Draw Thru's have always used a Carbon Sealed Whizzer that's why the Rajay was so popular along with the fact they dont need much oil pressure 200bhp was / is possible with a Rajay....you just put a big spring in the gate and hang on

Given it was on a Rajay, Tractor Carb, 4star its still a good no.. Wee Mans is also a Blow thru oil boiler so not a direct comparison You also need to ride a DrawThru to appreciate the adrenalin rush when it boosts is unlike anything else

Yes it was wrote by RevsHotClutch ......."if you know you know"

If a single Hex socket don't work "which it should" Get a Nut welded to the spindle and then use a socket on that

Yes Headstock is same as Blandit but wider at the swingarm pivot

there's a faceache group Suzuki GSX 750 Inazuma GB i can email the German one if it helps

is there an autojumble as well ?