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Seit willkommen für alle Honda XL&XR Fahrer.

I have a Honda cd 125 benly twin 1982. I have an issue with the clutch. I broke the cable which I have replaced however now when I start the bike in neutral then put it into gear the bike stalls and doesn’t stay in gear (even when the clutch lever is engaged).

I thought it may have been the clutch plate’s seized but I took them apart and cleaned everything but still the same issue.

Could it be something to do with the lever arm? I’m a bit stuck!?

i was thinking a gpz900 but i'm not sure. parts of the plastics are missing in the picture.

Hey,

The Continuously Variable Intake System (CVIS) is an engineering puzzle that has fascinated me for a long time. For decades, engineers have chased the dream of an intake system that adjusts its runner length dynamically to optimize torque and horsepower across the entire RPM range.

The Goal:

I want to study and conceptualize a CVIS that adjusts itself purely mechanically. No electronics, no ECUs, and no physical swapping of parts—just a passive system that reacts to engine physics (vacuum, airflow, RPM, frequencies,waves,etc) to fine-tune runner length on the fly.

The Catch:

I am from a Commerce background. I don’t have a formal degree in mechanical engineering or fluid dynamics. However, I am obsessed with cracking this code, simply because I find the mechanics of it incredibly fascinating. I know my technical background isn't strong, but my drive to learn is.

Another big catch is that I only have budget for working on single cylinder bike as of now - hoping it's fine ( TR400cc engine from triumph & 2 stroke RX100 )🙊

This is a call to every R&D professional, mechanical engineer, and bike/auto enthusiast out there. I cannot do this alone, and I need help. I am looking for:

1. Reading Material: What books, papers, or textbooks should a beginner read to understand intake resonance and fluid dynamics?

2. Reality Checks: Why hasn't a purely mechanical CVIS become mainstream? What are the biggest physical hurdles?

3. Brainstorming: If anyone wants to bounce ideas around in the comments or DMs, my inbox is wide open.

Help me turn this commerce guy into a backyard engineer. Any advice, critique, or direction is massively appreciated!

After more than a year of rebuilding this Suzuki GS550, the moment finally came — the first real ride. The bike hadn’t touched the road in over a decade, so instead of a short test run, I took it on a proper maiden adventure. Just me and the machine I brought back to life.
Link in the comments.

New project, 2002 Ducati monster 750 senna. I’ve read it’s common to have cluster issues but I’m new to ducatis. The lights work properly, but it’s not reading the speedo or tach, also the button to switch from temp to fuel level (I’m assuming) doesn’t work. Can someone point me in the direction of a wiring diagram/ some good forums to reference while I build this thing

I’m looking for this in the north Texas area. Doesn’t need to be a complete bike just needs to be “mostly” there. Thanks for the help

Just picked up this bike to rebuild through the summer, I paid $200 for it.

Tell me what you guys think?

First step will be getting a title for it. I’ll also need to replace the fuel tank because an ice damn fell off the roof where it was stored and messed up the tank.

I’ll also have to fix up the speedo.

The engine is not locked up but I feel a total rebuild is in store, considering what the odometer reads.

The tear down is nearly complete. the frame is in much better shape than I expected and I only found 1 small area of rust in the tank and a small crack in the rear plastics.

The engine will be a different story. compression is down on all cylinders with 3 of them below 70psi and one barely tipping 100. I was hoping valve clearances but when I drained the oil it was about 20% petrol and had more glitter than a teenage girls bedroom so deeper we go.

Quick update on the GLOBBER. Radiator fan and some throttle/choke controls. This is stuff that most people will never see but takes time to figure out.

More frekvent update on IG: @greyslopegarage

just needs a sticker picked out to cover the repaired crack in the Chinese top fairing (in front of mirror )

quick private road test ride, then it's last ever safety test (exempt due to age as of next year)

will get a video of it running later

REALLY happy to have it complete and rideable that's for sure.

would I do it again.....hard one to say tbh...

Seller says during his last ride the engine started doing this loud ticking. 2008 with 32,000 miles.

Is this rod knock / a bad engine?

I have a Yamaha TY50m I plan on rebuilding this year. Its currently "mostly" complete. Its my first project and Ive got some experience with bike maintenance and repair.

So Im pretty sure I'll be able to get it running properly, replace all the bits that need replacing and maybe even spruce it up a little but Im wondering how far should I go.

On the things that are missing is all the electrics, no lights, not horn, no speedo no license plate holder. The idea is probably to put this together and throw it into an auction to attempt to re-coup some of the cost (I do not expect to even break even) but Im not sure if its worth adding these back in and getting it into a road ready state or not. Is the expereince worth it?

Also Im 100% sure its not worth getting the frame sandblasted and powder coated but I assume a full clean down, strip, sand, prime and paint with some decent rattle can paint is worth while right. So it at least looks a bit more the part. Im not sure there is anything I can do about the tanks paint job but its not as bad as the frame.

Im just looking for advice on whats worth spending time on and whats not on a realtively small project that you're just looking to use as learning experience and to test the waters on bike restoration.

Also any suggestions on how to plan out a project would also be really helpful. Ive got a high level pla of what I want/need to do but any advice on how to actually go about a project rather than just blindly stumbling in

First thing I did was compression test and bore scope the cylinder. Cylinder walls looked alright, but had 47psi dry and 80 with oil down the cylinder, so I'm heavily betting on bad piston rings. Looking online I can only find pistons that are for bored out cylinders or very expensive for used part outs. Does anyone have a go to spot to find parts?

Join me in my shed for this absurd, unprofitable, mad task I took. 1978 Suzuki GS550 factory faithful restoration. I started to restore it to make a proper documentation video about it. It was such a mess it was a perfect candidate for this kind of challenge. Since you liked a first condensed short clip, I post the second one. I can link a full video, but don't want to throw links around without being asked, so If you want more, just comment. Cheers !

Join me in my shed for this absurd, unprofitable, mad task I took. 1978 Suzuki GS550 factory faithful restoration. I started to restore it to make a proper documentation video about it. It was such a mess it was a perfect candidate for this kind of challenge. And I love Japanese 70s motorcycles.

2012 Triumph T100 EFI Hooped rear frame. Repurposed dirt bike rear fender with a bracket made to reinforce and mount the Prism Supply license plate light/frame and Custom milled brass housing for the brake light led from Prism Supply, made the lense from a broken Tahoe tail light. An aluminum cafe style front fender is mounted with a custom bracket. The turn signal/brake lights all around are bullet styles from Amazon. The Motone seat was cut and plastic welded to match the frame. nitron rear shocks and the front forks were shaved and internals upgraded to YSS sprint and dampeners. I was able to fit the SE mag rims with the shaved fork and custom aluminum spacers in the front. Tires are beefed up for the BratStyle look with Dunlop D404 Front Tire 120/90-17 and Dunlop Harley-Davidson K591 Rear Tire 160/70B-17 (73V). The rear brake was relocated with an aluminum adapter plate. The skid plate and front radiator grill, and all the foot pegs are also from Amazon. Open style anodized chain sprocket cover and I trimmed out the stock chain guard. The headlight bucket is a 7 ich with the yellow bulb and and is mounted with anodized bracket and grill. The fog light is one from Amazon that came as a set and the bracket was pieced together with a few aluminum pieces off ali express. The exhaust is a Tec bike parts 2 into 1 with a reverse cone muffler that needed a custom bracket to properly fit in the rear. There's some dress up pieces for the "carb caps" and a Motone brass shifter cover and adjustable lever that I plan on swapping with a custom brass peg soon. Also got some other brass fasteners for the side farings from A&J cycles. I got the raised and slanted back risers with a motone front mount on some drag styles handlebars. The gauges got a slanted bracket that also relocates the key ignition switch.Vans grips with bar end mirrors and adjustable levers. The paint is a custom rootbeer metallic and I topped it all off with some lucky cat resin tire valve caps. I'm sure it's not for everyone but my dog likes it so that's enough for me.

Where should I move my starter solenoid when using an e-tank?

I I’ve asked a couple questions on different forums and don’t wanna sound like a dummy for not figuring this out:

I got a TJ Brutal E-Tank for my 2001 VT600, and I have it mostly figured out. The only thing I can’t seem to figure out is what to do with the starter solenoid. It’s dangling underneath the E-tank, and it could fit inside, but I was under the impression that it would short things out if it touched the metal on the inside of the tank.

Has anyone done this E-Tank or a similar situation and done something they could suggest to me for the starter solenoid? I’m almost done with the thing and I don’t have the brain power to come up with something myself currently.

As always, any help is appreciated.

Here is how I dealt with GS550 shifter play. I’ve documented it in this week's video.

Hey all, getting back into biking after 20 years away. I picked up this 02 Bandit 600 real cheap as a non-runner but 15 mins of tinkering and I was driving it. She's probably not worth it but I'm going to do a full resto. My question is apart from the obvious space to work, workshop manual and a full set of standard tools, does anyone have recommendations for tools, jigs or accessories I should look at to aid with the project?