Rob21

Yeah I’ve found that out. My cams and rocker arms are badly worn and pitted. Still made 132bhp on the dyno though Dyno man reckons its heat damage rather than lack of oil. BR Special Tuning can re-grind them for £275 plus postage. Rocker arms new from Fowlers are working out about £36 a pop x 16.... Not good. Something needs to change, be it a head with the inners or just the cams and rockers. Does anyone have rockers that would fit??

May need some cams due to pitting on some of the lobs. Anyone got a good shout for replacements? Either from another model or aftermarket? Cheers, Robbie.

They are my own velocity stacks. Designed by me and 3D printed by my mate. Went through a couple of designs and versions. The blue ones you see was a prototype. Ended up makin 15mm short ones recombined by the dyno tech. 3D printed in nylon. Very strong and light. The foam filters are ram airs, £25 a pair, only lost 1hp with them on, extremely efficient and cheap enough to buy each year. The bike done 130.5 bhp at the rear wheel, full yoshi cyclone system, 38bsts with the power jet circuit blanked off and the stacks. Dyno man wants it back to sweeten out the low end (very rich pilots) and advance the timing for some more horses

My carb tops rub against the frame and the choke pull rod + brackets nearly touch the engine. 1991 motor 1100, 1990 750 frame, 1991 38bst carbs. All very tight, should see what I have to do to get them in and out. lol

Was off the bidding site, much better than car trim, it has an aluminium frame inside it, really grips hard. not sure if I can link think but here anyway. 322408358823

Aye you can see I did that on the original photos, nae bother, looks trick enough!

Yeah there is very little clearance from the carbs, I will post some pictures when back in the garage, my carbs also have the idle screw coming out the side so I may need to change that / cut the shield. Will get something sorted That yellow Perspex looks pretty cool, I may need to make a similar cut out shape on the middle 2 carbs to clear the engine. Possibly not with the flex though, will deffo be using a heat gun.

Looks minted Yoshi Those carb bells too lovely! Did you make em yourself?

Hello all! What a mess. Me and Simon have been messaging back and forth on Eblag with no problems and mutual respect. I was in no way slagging him off or his shield, I was referring to the “moulded” bit not being very good. NOT the shield itself. On my original post I mention that my bike being a 7/11 with 750 carbs, and that nothing may actually fit. I have to mod / adapt everything to fit the stuff on my bike. ( the latest being an oil cooler kit) I was literally in the garage taking some measurements for another shield that Simon is insisting on making for me, free of charge, his choice and even after me saying I would feel bad if it didn’t fit and he’s made me another one for nothing. I said I would give him positive feedback and never wanted to give him negative feedback spoiling his 100% on Eb4y. I also said I would mention him on the forums ( which I’ve came to do just now) and seen all of this. I simply wanted to share my “project” with a yoshi heatshield and post the dimensions, findings etc for all to utilise. I know I have a good understanding with Simon the seller, and his shield, and have not done anything wrong, I wasn’t even trying to get money back, freebies or slate someone on a forum behind their back. As I’ve said many times nothing really bolts onto my bike and I buy everything knowing I can’t get a refund / freebie but I always have communication with the sellers because they’re genuinely interested in their product working and have helped getting it to work. Even if I have to further mod or buy additional parts which I know I may have to do before buying anything. Apoligies if anything’s being breached or if anyone’s upset. Robbie.

Thanks ET!

Not sure, I was thinking a material that would be flexible would be good. Surely someone has a good reproduction / template on here.

Yeah, it’s not too good is it It’s inspired me to make up my own, would get it laser cut and everything. I’m handy on the computer making cad models and vector files. Will update this at some point using my own template and design. That metal one looks pretty cool! I would be worried with it chaffing on things though

Wondering if someone could help me out with a drawing / measurements of a yoshimura heatshield for a slingshot framed say what now!?. It is a 7/11 (1991 1100 engine, 1990 750 frame and 1990 750 38mm carbs) I understand that this may not exist and trimming / adjusting would need done. i have a reproduction one made by sf services. Tried trimming a few things but just can’t get it to fit right. Seems there’s a bit with a moulded shape to it that just won’t go flat against the engine stopping the carbs fitting These are made from old plastic containers so must be a corner bit. Anyone know a material to use? I have plenty of heat proof material and edge trim. Thanks!

Nice one Jaydee, you got a build log going? Really intrigued. I have a brembo rcs 19 hooked up, massive improvement, want more though haha. I just don't want to throw ktech piston kit and springs at the forks and change discs, maybe callipers where I could have pieced a front end of modern stuff with more scope of upgrading. It's a 7/11 naked with a k5 rear shock so I'm not too concerned with keeping parts standard or period unless the forks would really perform being reworked? Thanks again for the replies guys, heavy appreciate them.

Thanks for the replies Sounds good Jaydee! better performance over spending money on the standard forks and brakes? May need to get some dimensions off of yourself when it comes to piecing together a front end? Cheers.

Been searching across different sites about swapping modern forks into the yokes. Want to use radial calipers and 320 discs with better suspension. Thing is my bike has a custom top yoke with risers for fat bars all made to standard 750 1990 spec. I would like to keep this if possible? I've thought about sliding in k6 forks into the standard yokes and using different wheels/spacers to make up and clearance? Any advice would be appreciated, can give pics / dimensions if needed. Cheers

Just wondering what kind of jets and exhaust/filters people are running? Got a bad misfire low down and into mid but clears right up past 5/6 thou and the bike pulls like a train, sometimes wheeling and going light on the front. Replaced plugs, plug caps, ht leads, coils, a leaky inlet rubber, valve clearances checked, just rebuilt the carbs replaceing some o rings, nothing is worn or broken. Running Vance and Hines super sport system, the stock air box rubbers with ram air foams pulled over them. Has 144 main jets and 40 pilots. 2 turns out on the mixture and bottom notch on the needles. Bike is a 7/11 appears to have the 750 loom. Not sure if the cdi is different between 750 / 1100? Any help much appreciate. Cheers.

Cheers. Do you know of any after market ones, so I could use a male rose joint? I'm also trying to get a little gap from the frame when I run it in race shift pattern.

What other gear shift arm can i use? There seems to be very few teeth. I want to use something like the lightech one. Cheers.

One of the left float bowls is leaking. it has had 2 patch jobs on it. i suspect someone in the past has tightened the drain bolt too tight and cracked it. Anywaon know of spare bowls or different bowls i could use on them? I have attached photos, not 100% sure on what the exact model is. They are off an 1127 motor. Thanks.

Thank you

Mine are looking pretty tired. Does anyone know if another bikes that would fit or even aftermarket ones like gilles? Cheers.

I was hoping to fit an SRAD 600/750 or a TL1000 mudguard. Anyone know if they fit or are close with some brackets made? Cheers.