What was I thinking!…
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It's interesting to read about the YPVS oil pump action.
All I will say is, the Cagiva/Aprilias don't inject more oil on pipe. So I don't see the need for this capability. The pumps on those engines are Japanese Mikuni oil pumps and they seem more than up to the task of delivering enough oil.
Also, the RD350s don't run them either, even when highly tuned the stock oil pump flows more than enough oil!
Getting it together, bit at a time…
The back barrel studs are longer on this engine. I’m thinking maybe a guide bracket fits under the nut…
One thing I always do now is clean all the engine casing/ect thread holes with a tap and the bolts with a die. I even clean my nuts now
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What?! It’s a racing plug! A lad sold it to me along with a 350 main jet to make it go faster! See the way it’s straining to go forwards faster?
That or it stops dust & acorns falling in the barrel
I wish I’d took pics of the piston in the bore, such a sweet fit. I love PJME freshly rebores!…
Thankfully I found a clutch bracket in my bits box, along with the PV & housing that I don’t remember buying
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What?! It’s a racing plug! A lad sold it to me along with a 350 main jet to make it go faster! See the way it’s straining to go forwards faster?
That or it stops dust & acorns falling in the barrelI wish I’d took pics of the piston in the bore, such a sweet fit. I love PJME freshly rebores!…
Thankfully I found a clutch bracket in my bits box, along with the PV & housing that I don’t remember buying
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Started cleaning up the fork stanchions. Used a diamond tip dremmel bit to open up & clean out corrosion (the black dust) from the pits. Any ‘engraving’ was intentional 🫣 …
Ready for filling with JB Weld…
Filled and sanded
I am not recommending anyone do this !
That said, if I close my eyes and run my fingers up and down I can’t feel anything untoward at all! Before it would of grated a lemon…
Just waiting on another parcel of fork seals to come, the first one got itself lost in transit. That and some aluminium silver spray paint and zinc primer to finish the swingarm and (bolt on) frame down tubes. Then I can mount the engine and move towards getting it running
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This thread is inspiring and refreshing. I wish I had your skills.
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This thread is inspiring and refreshing. I wish I had your skills.
Awww, bless! Thank you! But I wouldn’t call it skill so much as wariness as the result of a lot of misstooks
seriously though, I had to teach myself. I’ve always had cheap bangers and had to maintain them. Couldn’t afford anything else. I built myself a lambretta chop out of an old frame I found in the woods in Shaftesbury, on the road for £50 (T&T not included!) Good old days! I wish we’d had the WWW back when I was a yoof though!…Ordered some bushes. Couldn’t find any 42mm x 39 so got the closest available which are 43 x 39. These could very well be the correct size, if not I can get the fork leg machined out a mil to take them. It’s easy to get at now I’ve sussed out how to remove the aluminium (seal holder) end-cap…
Pics to come…
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Awww, bless! Thank you! But I wouldn’t call it skill so much as wariness as the result of a lot of misstooks
seriously though, I had to teach myself. I’ve always had cheap bangers and had to maintain them. Couldn’t afford anything else. I built myself a lambretta chop out of an old frame I found in the woods in Shaftesbury, on the road for £50 (T&T not included!) Good old days! I wish we’d had the WWW back when I was a yoof though!…Ordered some bushes. Couldn’t find any 42mm x 39 so got the closest available which are 43 x 39. These could very well be the correct size, if not I can get the fork leg machined out a mil to take them. It’s easy to get at now I’ve sussed out how to remove the aluminium (seal holder) end-cap…
Pics to come…
Scraped off the ‘satin black covers all’ paint to let the seal cup slide up…
Once it’s slid up remove the ring clip
Which allows it to come off for cleaning. The bottom guide bush sits in the recess that my thumb is pointing to. The seals live in the aluminium ‘cup’. My seals turned up and are a perfect fit…
If the bush I ordered is too big I’ll have to find someone to machine it out 1mm…
PS: there’s also an o-ring in the cup that benefits from cleaning or replacing…
Poor steel upper fork tube looks like it was attacked by a boyracer with a Brillo pad! I’ve got no idea what kind of finish to put on it, any ideas?…
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I’m thinking of wire brushing the chrome and clear laquer. It looks like it’s covered in condensation at the mo!…
Started in on the brakes while I wait for bushes…
Getting one piston out can be bad enough! Four is a bad joke! Pumping them out hydraulically wasn’t an option. So I grabbed the blind bearing puller that I got for peanuts on fleabay and wrapped duct tape around it to fit the pistons. Getting them moving is half the battle, once they were twisting i lubed them and use the slide hammer to tap them out while gently pull & twisting them…
Worked a treat!
PS 30 year old brake fluid is some nasty stuff!
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Started in on the brakes while I wait for bushes…
Getting one piston out can be bad enough! Four is a bad joke! Pumping them out hydraulically wasn’t an option. So I grabbed the blind bearing puller that I got for peanuts on fleabay and wrapped duct tape around it to fit the pistons. Getting them moving is half the battle, once they were twisting i lubed them and use the slide hammer to tap them out while gently pull & twisting them…Worked a treat!
PS 30 year old brake fluid is some nasty stuff!
…Hmmmm! Turns out that the rear is not so easy. Too big an internal diameter pistons for my slide hammer bodge. Plus somebody has already mullahed one of the bleed screw threads.
Anyone ever had an oversized bleed screw fitted to a calliper? Does the V profile at the bottom stay the same size/dimension?… -
Hmmmm! Turns out that the rear is not so easy. Too big an internal diameter pistons for my slide hammer bodge. Plus somebody has already mullahed one of the bleed screw threads.
Anyone ever had an oversized bleed screw fitted to a calliper? Does the V profile at the bottom stay the same size/dimension?… -
Guide Bushes turned up but are too big. The size I need is
42mm outer
39mm inner
20mm deep
1.5mm thicknessI can’t find them anywhere. If anyone knows of a place, please let me know…
Help! 🤯 -
I think my only real option is to have the fork legs opened up from 42mm to 43mm (the bush fits the stanchion perfectly, it’s only the outer size that’s wrong)
I just don’t know how much meat there is left to lathe out…But I’ll worry about that when I have the money to pay for it
Plan of action: Ready frame into enough of a rolling chassis to fit engine.
- Clean rear shock for refitting.
- Clean & grease swingarm bearings, bolt, bushes & endcap/seals.
- Temporarily fit forks for symmetry.
- Clean & prep front & rear wheel bolts, spacers & adjusters, ect.
- Whack it together…
I ground off the rust and gave the swingarm & down tubes a temporary paint job, because they were pretty scabby. Angle grinder then rust converter, then zinc primer, then (apparently!) aluminium- silver…
TBC… -
But I’ll worry about that when I have the money to pay for it
Plan of action: Ready frame into enough of a rolling chassis to fit engine.
- Clean rear shock for refitting.
- Clean & grease swingarm bearings, bolt, bushes & endcap/seals.
- Temporarily fit forks for symmetry.
- Clean & prep front & rear wheel bolts, spacers & adjusters, ect.
- Whack it together…
I ground off the rust and gave the swingarm & down tubes a temporary paint job, because they were pretty scabby. Angle grinder then rust converter, then zinc primer, then (apparently!) aluminium- silver…
TBC…Baby steps is still forward steps!
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Been busy enjoying the weather but still managed to get a little bit done!
I definitely need to get the new bushes fitted in, there’s loads of stanchion movement in the fork leg. I just need to find a trustworthy engineer with a lathe…The bump stop rubber has rotted out on the rear shock. I need to find a replacement that can be fitted in situ, if there are such things that anysoul knows of?…
So quiet! Is everything hibernating already? …
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Baby steps is still forward steps!
…Been busy enjoying the weather but still managed to get a little bit done!
I definitely need to get the new bushes fitted in, there’s loads of stanchion movement in the fork leg. I just need to find a trustworthy engineer with a lathe…The bump stop rubber has rotted out on the rear shock. I need to find a replacement that can be fitted in situ, if there are such things that anysoul knows of?…
So quiet! Is everything hibernating already? …
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I forgot!…
Any experience with Linkseal Oko? I’ve only just discovered this kind of product. It sounds too good to be true! But the theory/idea makes sense as long as it performs as it says…
@SpookDog said in What was I thinking!…:
I forgot!…
Any experience with Linkseal Oko? I’ve only just discovered this kind of product. It sounds too good to be true! But the theory/idea makes sense as long as it performs as it says…
Never heard of it but looks like stuff that put on bicycle when the tubeless conversion on spoked rim is done.
If it's quality stuff it will do what is advertised. -
@SpookDog said in What was I thinking!…:
I forgot!…
Any experience with Linkseal Oko? I’ve only just discovered this kind of product. It sounds too good to be true! But the theory/idea makes sense as long as it performs as it says…
Never heard of it but looks like stuff that put on bicycle when the tubeless conversion on spoked rim is done.
If it's quality stuff it will do what is advertised.Sounds right!…
Put it in and it coats the inside of the tyre & rim and stays liquid, if you ever get a puncture it will be forced out into the puncture hole and seal it. Sounds almost too good!
But!: From what I’ve read a lot of it is agricultural and off road based, which is only a good thing to my thinking…
I can’t believe I’ve never heard of it before…Another piece of the puzzle connected!
One day I’ll get a bike that comes in one bit without the challenge of sussing out how it all fits together 🫤 …
Maybe, but where’s the fun in that!
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Sounds right!…
Put it in and it coats the inside of the tyre & rim and stays liquid, if you ever get a puncture it will be forced out into the puncture hole and seal it. Sounds almost too good!
But!: From what I’ve read a lot of it is agricultural and off road based, which is only a good thing to my thinking…
I can’t believe I’ve never heard of it before…Another piece of the puzzle connected!
One day I’ll get a bike that comes in one bit without the challenge of sussing out how it all fits together 🫤 …Maybe, but where’s the fun in that!
Tzr125RR tailpipe…
Man this thing is heavy! as well as looking like it was used as a bobsleigh!
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WTF is that inside?! Someone left a WW2 torpedo inside!…
Is this normal or was this an asthmatic example of Yamahas finest? This ‘can’ weights about a kilo, no shit!…
It’s weird cause the expansion chamber breathes really well with no obstructions, though it ways a Shit ton as well!!…
This was not an easy picture to take, that spot of light is the only ‘free airway’ through the can! It was only visible if I angled it’just so’…
