gs550 cafe racer track day bike , home made featherbed-ish frame
- Thread starter dansofield550
- Start date
50gary
Under the Limelight
I really like the blend of old and new USD forks and swingarm and the "featherbedish" frame. Out of curiosity what is the rake of the head tube and angle of the swingarm how long is the wheelbase and did you scale the bike for weights and percentages? I'm fascinated by this stuff. Great job.
Cheers, 50gary
Cheers, 50gary
dansofield550
Active Member
the head tube angle is 23 degrees , cant remember the swing arm angle,
the wheel base is fairly long at 1300mm or so , i did put some scales on it and it came in at roughly 145kg .
hoping the 650 conversion will give a good amount of extra go as corners were find but i was ! blown away on the straight ! was a little bit fluffy picking up revs from 8 to 9000 after closing it off , hoping i've fixed this too with a re-jet , although once the new engine is ready i'll be fitting some vm29 flatslides
the wheel base is fairly long at 1300mm or so , i did put some scales on it and it came in at roughly 145kg .
hoping the 650 conversion will give a good amount of extra go as corners were find but i was ! blown away on the straight ! was a little bit fluffy picking up revs from 8 to 9000 after closing it off , hoping i've fixed this too with a re-jet , although once the new engine is ready i'll be fitting some vm29 flatslides
dansofield550
Active Member
thought i'd have a go at modifying my cam chain tensioner to a manual type,
seemed easy enough to cut off the large part housing the spring parts then drill out the hole and tap to m12x1 make a nut and o ring groove to keep the oil in ,
then make a lock nut, and new shaft to act on the tensioning slide .
seemed easy enough to cut off the large part housing the spring parts then drill out the hole and tap to m12x1 make a nut and o ring groove to keep the oil in ,
then make a lock nut, and new shaft to act on the tensioning slide .
dansofield550
Active Member
couldn't seem to buy any inlets to suit my 650 head and flatslide carbs so made some of my own,
matched them to cylinder head to aid flow , now carbs can be mounted using rubber hose cut to length and held on with hose clips
matched them to cylinder head to aid flow , now carbs can be mounted using rubber hose cut to length and held on with hose clips
dansofield550
Active Member
carbs are from a gsxr750 1985 -86
dansofield550
Active Member
had a go at making some velocity stacks , didn't seem that hard to do, i had some 6082 alli tube knocking about so cut to length and annealed it so softnen it , used a cutter holder to form the taper then pressed a 50mm bar in the other end to make the carb dia ,turned a nylon block with a rad and press the flair on the inlet end then 5 min's in the lathe to rub down,
looked a lot better than i though i'd be able to do , a few didn't go right though!
looked a lot better than i though i'd be able to do , a few didn't go right though!
dansofield550
Active Member
back to brands hatch monday, was okay , bent the gear linkage with a bit too heavy left foot, had to quieten it down and managed to choke the power , it wouldn't rev past 10,000 ,
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[/size]need to finish the 650/550 engine as it was so annoying getting stuck behind r1 man who shits himself at a corner, so i bo[/size]m[/size]b past then a straight bit comes and he's got 170 bhp and i've got 50! and he's back past me like a missile then a strange bendy bit come again and r1 man has another pant shitting episode and i just roll of the throttle and pile past then another straight bit etc etc and so it goes on and on.
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[/size]need to finish the 650/550 engine as it was so annoying getting stuck behind r1 man who shits himself at a corner, so i bo[/size]m[/size]b past then a straight bit comes and he's got 170 bhp and i've got 50! and he's back past me like a missile then a strange bendy bit come again and r1 man has another pant shitting episode and i just roll of the throttle and pile past then another straight bit etc etc and so it goes on and on.
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Nice. And for those of you asleep in the back, those carbs were not fitted to US spec bikes in 85/86 IIRC. Just UK and other export markets - according to the good people over at OldSkoolSuzuki who know about those things. Nice wok on those velocity stacks. Could you makes some with a smaller ID to match the bore and press them into a mounting rings with holes for the air jets? Like CR specials. They supposedly flow much better and are worth a couple of HP.
Like "Shemozzzles" used on Beezumph triples in 72 with concentric carbs.
Like "Shemozzzles" used on Beezumph triples in 72 with concentric carbs.
dansofield550
Active Member
you'll have to show me a picture of that before i know if i can make'm teazer
dansofield550
Active Member
i see , amal type ones, i can make those, made a few already! for other people on a 30's racing car ,
not sure i have any tube the right dia laying about to make that style , the ones i made for the flatslides started out 2" dia 6082 , was left over from some military tent poles that i made a machine to tapper the ends down on, i would need to start with smaller tube.
in answer to other question, it handles fairly normal! considering its my first attempt at frame building i'm well pleased with it, it tips in easy and the monday session was able to push a bit more braking harder and holding the line with a bit more go ,even though i bent the gear linkage , the first outing was more touchy feely for head bearings and turning in without tucking etc , its been stable and even tightens the line with throttle .
not sure i have any tube the right dia laying about to make that style , the ones i made for the flatslides started out 2" dia 6082 , was left over from some military tent poles that i made a machine to tapper the ends down on, i would need to start with smaller tube.
in answer to other question, it handles fairly normal! considering its my first attempt at frame building i'm well pleased with it, it tips in easy and the monday session was able to push a bit more braking harder and holding the line with a bit more go ,even though i bent the gear linkage , the first outing was more touchy feely for head bearings and turning in without tucking etc , its been stable and even tightens the line with throttle .
Basement rat
Over 1,000 Posts
Mind blowing.
