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About walkahz

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    Advanced Member
  • Birthday 07/31/1990

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    Diggers Rest Vic

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  1. Sweet no worries, Will take some getting used to but it looks good
  2. Logged on via computer and the forum seems to have a different colour scheme? On Purpose or a bug?
  3. Long time since a post. Been doing some maths in the background to try to figure out a spring rate. Doing this on a povo budget at the moment so tried to use components i already had. Best matching rear spring i had was off a 90 kdx 200. Yz465 will use a twin spring setup with the kdx spring. Yz125 will use the original 465 spring. New twin spring is far left. 465 spring centre 125 spring right. The rebuilt shock is almost done rebuilt with a new seal 5w oil and freshly zinc plated parts.
  4. Great absolutely loving it. Starter motor crapped itself on Wednesday though so need to get a new one. Luckilly its a single kick to get her going!
  5. Thanks to coggs for the awesome ride. Awesome flowing tracks with a mix of everything you could want. Conditions in the morning were bang on with the rain from the day before. Got a bit dusty though on the open tracks and into the afternoon. Airfilters definitely need a clean after this ride. 3rd gear hill is definitely stuffed especially with the dry conditions offering very little grip. Thanks to all for a wonderful day out on the bike!
  6. Thats what I thought! I suppose Beta didnt design their starter to be a disposable part like the 09-16 ktms lol. Dunno, bit of googling shows a few other 17 betas with this issue, might just be a dodgy batch as they all seemed to be higher hours like mine. Looks like one off a honda TRX quad might fit will have to do some more searching.
  7. The past couple of rides my 300's starter has been really struggling almost like the battery was cactus. Today on my little solo ride i took a small little tumble and put the bike on its side picked it up and hit the starter to be greeted with a very sick sound. Lucky with the kicker on board i got it fired up but decided to call it early and take it home to diagnose/fix. Got home and poped open the ignition cover to check the bendix. Some evidence of water in the small amount of oil in there but the bendix seemed ok. Decided to head into sunbury to visit Rob at motohub and grab some gearbox oil which is probably due for a change. He suggested checking the starter motor itself for worn brushes or loose magnets. With the wonderful position of the beta starter out come all the engine mounts so i can lever the engine up to get the starter out. Crack it open to find Yep thats magnets stuck to the rotor. Looks like 1 has come loose and spun it around collecting a few others along the way. Does anyone have any idea if there are any aftermarket options for the starter? Beta only list the whole unit at a cool $400! In the meantime ive epoxied the non mangled magnets back in place and will see if it will work well enough while i wait for a new one!
  8. Pulled apart the silencer for repacking! Yuck! Also started pulling apart the rear linkage for pre winter greasing. Didnt get too far as some of the bolts have been done up stupidly tight and have no access for a socket. Ive had to grind down a ring spanner to fit!
  9. Had an awesome day at Tims training day today. Started the day with some balancing skills and slow riding before progressing onto some wheelies and log hops. Did some follow the leader type rides through the property which saw us tackle some decent rocks and other tricky terrain. Just when you thought you were getting good Tim and the other trainer Sam would do something crazy and show you how crap you are!! Was great to get out and purely focus on building skills rather than keeping up with the group. I was absolutely stuffed by the end of the day. Decided to try the log hop and ended up over the bars so that was more than enough for me! Thanks to Chris who organized and to all the others who were there it was a great day.
  10. 14mm shaft compared to 16 on most modern bike. 46mm pistons. it is a piston reservoir, Im thinking of converting to a bladder but not fixed on it at this point. Thanks for the honda tip, Ill likely only need it for the bump stop as I can buy aftermarket 1 piece seal heads which i will use in place of the stock multi piece setup. For shims Technik in Sydney list on the website lots of shims so i will probably give them a go!
  11. Been working on stripping these down some more. Decided to pull apart the 465 shock at the same time as it is like riding a pogo stick. Seal head removal was covered by making some spacers to fit on each side of the shaft. The whole lot was put in the press and pressed down squishing the rubber gland in the middle enough to get the circlip out with some wrestling. This was the state of the oil that came out manky and black no good! The internals of the shock are also very different to a modern bike. Only about 3 shims on the compression side and a deflection limiter and none on the rebound, Rebound seems to be taken care of by the holes on the step on the shaft with restriction provided by the pushrod runs through shaft to the adjuster on the end. If any one has tips for doing some basic valving on these old bangers let me know. The body on the 125 shock and 465 shock are the same. Which is good because the body is shagged on the 465. There is a lip big enough to feel and see which will no doubt leak oil past the piston. The 465 shock also had no gas charge and hardly any oil left which is why it was such a pogostick. (probably also why its so worn but this bike has had a very hard life in the past) The 125 body is in pretty good nick. Measured with a bore gauge and total change in dia is within 0.1mm and runout also 0.1mm which i think is pretty good for a 39 year old part. So plan at this stage is to rebuild 1 good shock for the 465 out of the parts of the 2. The worn out body I am looking at turning up a new sleeve and welding onto the head but need to get my head around how to bore a 46mm hole 300mm odd deep and keeping it straight round and smooth (need to make up a beefy boring bar!) Initially will keep the body raw but once ive got a bit of a batch of them i might get all 3 Hard anodized at once (price for 1 was at minimum charge so more economical to get a few done)
  12. Got stuck in after I had made to make a set of soft jaws to suit. Pulled the spring off and let out the nitrogen and removed the res. There was no bumper left and fell out of the plastic shield in pieces! These early shocks have issues with wear as they were not hard anodized stock. I will look into getting them hard anodized depending on the price i get, i know of a few places here in Melbourne who could do this.
  13. Hi All As some might be aware Ive got both a 125 and 465 G model Yamaha with the original non linkage yamaha monoshock. After A few rides on each bike like many older machines the suspension is......lacking. Especially when carrying my 95kg behind. Forks are relatively straight forward and I will likely throw some cartridge emulators and suitable sized springs which should bring them to an acceptable level. Rear shock is more difficult. For those unfamilar with these setups the shock is mounted up the spine of the bike under the tank and there is a remote res mounted in the airflow under the tank. Im currently pulling apart a spare 125 shock to have a look at and see what im in for. A lot of the period parts for these shocks really focused on finned reservoirs to keep the oil temps down. These run a piston for nitrogen separation. What I am thinking is to make up a custom res that is finned (if I can be bothered for bling factor) and possibly for bonus points add a compression adjuster from a more late model bike to get some sort of adjustment there as currently only rebound is adjustable. (not sure if this is worth the extra stuff around though). Rubber res hose to be replaced with braided line. I have a lathe and mill at home as well as contacts with CNC gear so really doing this as more of an interest project more than anything. Rear springs are progressive stock but genuine stiff springs are near impossible to get so i will likely get a twin spring setup to suit my weight (465 already runs a twin spring that is just too soft so that might make its way to the 125 and the 465 will get a beefier unit.) Although i have found that tecnik suspension in sydney sell progressive springs that may be suitable so i will look into this as well.
  14. Been a while between posts again. Been busy riding the full size bikes so the poor little 80 took a back seat. Am going up to mums place over the weekend so decided to take the tank up with me to get painted where dad got the 250 and 400 tanks done. Before that i did some electrolitic rust removal from the inside. Its like the opposite of the zinc plating i do. Put a nice shiny bit of steel in hook it up to a battery charger and pull out the rust! After 2 days running it seems to have got most of the rust off!
  15. Bike washing! Its a chore that we all face after every ride (for most of us anyway). No matter how I try I always find dirty spots once the bike drys and missed spots and the bike never really looks properly clean like some others bikes. What products and processes does everyone use to get their pride and joy looking new again after a day of abuse? Normally my bike wash goes like this. Remove air filter and plug intake, Put bung in exhaust. Wheel it out onto the grass and wash it down with the hose to get off the big clumps and rehydrate the dirt. Hit it with the pressure washer to remove everything i can. Put some truck wash into the soap tank and rinse the bike with soapy water and then brush it down. any trouble spots are hit with degreaser and extra scrubbing especially around the chain. Spray with WD40 and remove bungs then start up the bike to dry out the water on engine components. My biggest drama is once the bike drys dirty water has leaked out and dried making for dirty spots. The other is that the bike always looks dull and not nice and shiny. Are there any products people use to make it all look nice again? Silicone spray?
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