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tldr - this was perhaps an unwise decision

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tyr
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PostPosted: 18:32 - 29 Feb 2024    Post subject: tldr - this was perhaps an unwise decision Reply with quote

https://imgur.com/a/DOcbeXP

This is definitely an intro thread. The last bike I had was a Bantam, so long ago that I can't recall how I bought it. I sold it in the early 70s. I'm in England, by the way.

I'm not going to ride the one in the picture. It's a 125cc from 2009. I doubt anyone will. It was stood in a field for a couple of years. My 12 year old said he'd like to do up a bike a few weeks back. Well, its educational. I got the bike. It has rust. I added some Evapo-rust, WD-40, wire brushes and an adjustable spanner. I decided to join a biker forum to get help. Then I got him a respirator and eye protection, WD-40 is vicious stuff. He can have half the garage. And a second-hand Haynes manual, I got that too off abebooks.

What I really need is to get the bike a foot off the ground so he and I can sit on camping chairs and consider it. My days of kneeling are long past. YouTube has a succession of DIY roll-on lifts, This bike weighs 120kg. If anyone chips in a thought at this point it would be welcome. I'm not paying £600 for one of those red narrow metal platforms though.

If this takes as long as I expect, I'll throw more photos in at stages. If I just disappear it will have been a bad idea to begin with.
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Nobby the Bastard
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PostPosted: 18:41 - 29 Feb 2024    Post subject: Re: tldr - this was perhaps an unwise decision Reply with quote

tyr wrote:
Then I got him a respirator and eye protection, WD-40 is vicious stuff.


What?!?!
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stinkwheel
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PostPosted: 18:45 - 29 Feb 2024    Post subject: Reply with quote

https://youtu.be/TXMmrZN4qDw?si=jxuyKG10oC_EQgrI

Or put the footpegs on the wrong side and put axle stands under them then chock a wheel up.
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tyr
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PostPosted: 19:06 - 29 Feb 2024    Post subject: Re: tldr - this was perhaps an unwise decision Reply with quote

Nobby the Bastard wrote:
tyr wrote:
Then I got him a respirator and eye protection, WD-40 is vicious stuff.

What?!?!


From the label: "May be fatal if swallowed and enters airways", "May cause drowsiness or dizziness".

Half his Year 10 is round the back of the bikeshed at lunchtime getting over their latest math lesson with the stuff. Or maybe it's dry cleaning solvent, he can't tell the difference yet.

Back in my day we just carried a corked test-tube of ether in our satchels. So much simpler and the chemistry department bought it for us.
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tyr
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PostPosted: 19:09 - 29 Feb 2024    Post subject: Reply with quote

stinkwheel wrote:
https://youtu.be/TXMmrZN4qDw?si=jxuyKG10oC_EQgrI

Or put the footpegs on the wrong side and put axle stands under them then chock a wheel up.

I had it in mind that it needs to be wide enough to put paddock stands front and back, so the wheels can come off. The price is about right though. There's a Travis Perkins up the road.
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Nobby the Bastard
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PostPosted: 19:15 - 29 Feb 2024    Post subject: Re: tldr - this was perhaps an unwise decision Reply with quote

tyr wrote:

Half his Year 10 is round the back of the bikeshed at lunchtime getting over their latest math lesson with the stuff.


That won't be WD40.

Regarding getting it in your stomach or air way, would you ingest motor oil?
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Easy-X
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PostPosted: 22:04 - 29 Feb 2024    Post subject: Re: tldr - this was perhaps an unwise decision Reply with quote

Nobby the Bastard wrote:
Regarding getting it in your stomach or air way, would you ingest motor oil?


If you're gonna check your oil, gotta do the taste test Wink

Seriously though, if it's only a 125 what's the bottom of the thing like? Could you get away with a dirt bike lift?

https://i.ebayimg.com/thumbs/images/g/e9YAAOSwRjRgwfSR/s-l300.webp

https://www.ebay.co.uk/itm/261703332475
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Robby
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PostPosted: 22:18 - 29 Feb 2024    Post subject: Reply with quote

What bike is it? From the swingarm and rust I'd say CBF125, which should have centre stand.

However, with that rust you need to get a lot more than the wheels off. Chances are that the swingarm is toast.
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tyr
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PostPosted: 22:42 - 29 Feb 2024    Post subject: Reply with quote

Robby wrote:
What bike is it? From the swingarm and rust I'd say CBF125, which should have centre stand.

However, with that rust you need to get a lot more than the wheels off. Chances are that the swingarm is toast.

As you say, it's a cbf125 and it does have a centre stand. It doesn't have the side prop, that snapped in half. I do have both halves though.

If the lad gets away with just the swingarm needing replacement I'll be startled.

There may be an ethical issue with regard to decals. If he resprays things and puts Ducati decals on the tank, will he be shunned thereafter?

As for the box lifts, they'd fit but I've no idea how they cope with the shift in weight as major components come and go. Strapped down to something heavy sounds less wobbly.
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Nobby the Bastard
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PostPosted: 22:47 - 29 Feb 2024    Post subject: Reply with quote

The shift in weight would be no different than if it were on a centre stand and quite frankly on a 125 isn't a big issue.

I manage it with a centre stand on my thou that weights about 250kg with no difficulty. Removing the front wheel will be the biggest problem but on a stand under the engine/frame rails there is no pivot point like with a centre stand and you wouldnt have an issue.
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WD Forte
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PostPosted: 00:09 - 01 Mar 2024    Post subject: Reply with quote

If that pics anything to go by
that bike looks like a well abused and neglected rot box

I don't think it's worth it but If I was forced to try and renovate it
I wouldn't fuss over a fancy bike table at this point
First I'd want a V5 or proof it aint not nicked nor nuffin
then I'd want to know if the engine is a viable proposition
if so I'd strip it while taking pics and making notes and boxing it all up
then start on the frame forks and swinging arm

Your boy can't ride it legally for 5 years so what's the rush?
besides, at 12 years old, the chances of him maintaining interest in it for more than 10 minutes are slim.
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Bhud
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PostPosted: 00:17 - 01 Mar 2024    Post subject: Reply with quote

Stools are good. You can remove the tank, seat and other bits and pieces. Then sit on a stool, remove the exhaust and footpegs and levers, loosen axle bolt, remove sprocket, disconnect clutch and control cables, disconnect electrical connectors, and loosen engine mounting bolts. Walk it over to the grass, get the kid to hold it upright, remove the engine and put it on a stand. Now you've got a light rolling chassis with a few bits and pieces attached. Heavier than a pushbike but still something you can lift up and plonk down on an elevated platform.

I use something like this as a stand (it's my only stand). Don't know why they've painted the lower half black, but mine is otherwise identical:

https://www.ebay.co.uk/itm/381019439461

It can go up one foot but it's precarious - you have to balance it right, and push up on the engine, and you may have to use blocks of wood and towels to avoid damage to the engine case. I wouldn't put any bike one foot up in the air with this, even though I have experience of using this stand. You will need to raise it a bit, add a few blocks of wood underneath, raise it a bit more, add blocks behind it, etc. Precarious. This type of stand is mostly good for enduro bikes.

My suggestion: as it's a 125 - a small, light bike - you can lift the engine out by expedient means and a bit of forethought, and this will make the rest of the bike much lighter.
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Pete.
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PostPosted: 06:31 - 01 Mar 2024    Post subject: Reply with quote

WD40 is probably one of the safest things you can give a child to play with of that sort. Water is fatal if inhaled, or ingested in great quantity after all.

Goggles and gloves are a great idea, forget the mask until spraying time. The adjustable spanner will do more harm than good, buy a set of budget combination spanners, small metric socket set (3/8" drive at least) a 1lb hammer, screwdriver set, decent pliers standard and long nose, circlip pliers, allen key set and a tool box. Get some rags and some parts trays. Teach him how to work methodically, there's no use learning to make a huge mess which will still be there in 10 years he needs to learn how to approach a task or he'll just strip it down and forget it.
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tyr
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PostPosted: 06:41 - 01 Mar 2024    Post subject: Reply with quote

WD Forte wrote:
If that pics anything to go by
that bike looks like a well abused and neglected rot box

I don't think it's worth it

That's undeniable. I'd not let him loose on anything of existing value, this is learning from scratch. If he brings it back to a functional and possibly aesthetically pleasing state he can choose his own next time.

Quote:
but If I was forced to try and renovate it
I wouldn't fuss over a fancy bike table at this point
First I'd want a V5 or proof it aint not nicked nor nuffin
then I'd want to know if the engine is a viable proposition
if so I'd strip it while taking pics and making notes and boxing it all up
then start on the frame forks and swinging arm

Oddly we have the new keeper slip - and a key - and I trust the previous owner when he says the engine is the least of the problems. Using a camera is excellent advice, and the sequence.

Quote:

Your boy can't ride it legally for 5 years so what's the rush?
besides, at 12 years old, the chances of him maintaining interest in it for more than 10 minutes are slim.

At the moment he has no desire to ride one at all, he just feels this is the next step after Lego. I would concede he has an unnatural attention span when he gets started. Time will tell.
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tyr
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PostPosted: 06:57 - 01 Mar 2024    Post subject: Reply with quote

Bhud wrote:
Stools are good. You can remove the tank, seat and other bits and pieces. Then sit on a stool, remove the exhaust and footpegs and levers, loosen axle bolt, remove sprocket, disconnect clutch and control cables, disconnect electrical connectors, and loosen engine mounting bolts. Walk it over to the grass, get the kid to hold it upright, remove the engine and put it on a stand. Now you've got a light rolling chassis with a few bits and pieces attached. Heavier than a pushbike but still something you can lift up and plonk down on an elevated platform.

That all helps, I'm grateful. He's preparing his workspace over the weekend, having this image in his mind will focus what he's doing. As for the choice of stand, there's beams - if he uses an adequate fallback strap to catch any calamitous misjudgement I'm sure he could trust the box lift you pointed to.
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tyr
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PostPosted: 10:56 - 01 Mar 2024    Post subject: Reply with quote

Pete. wrote:
Goggles and gloves are a great idea, forget the mask until spraying time. The adjustable spanner will do more harm than good, buy a set of budget combination spanners, small metric socket set (3/8" drive at least) a 1lb hammer, screwdriver set, decent pliers standard and long nose, circlip pliers, allen key set and a tool box. Get some rags and some parts trays. Teach him how to work methodically, there's no use learning to make a huge mess which will still be there in 10 years he needs to learn how to approach a task or he'll just strip it down and forget it.

I'll look out for the 3/8" sockets. With a ratchet handle, I think. He had a toolbox for Christmas years back to keep his Lego parts from living on the floor, he's repurposing that. One of those red and black things with five drawers and a cupboard underneath and then castors. He already collects plastic trays. Don't oily rags self-combust or leave marks on other washing?
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Easy-X
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PostPosted: 12:07 - 01 Mar 2024    Post subject: Reply with quote

Cool. Sounds like you're both going into it with the right expectations Smile

Beware though, once you get going all sorts of daft thoughts will enter your head like "I saw a video on how to build your own blasting cabinet" and "let's buy the lad a MIG welder for Christmas" Laughing
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Nobby the Bastard
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PostPosted: 12:31 - 01 Mar 2024    Post subject: Reply with quote

tyr wrote:
[ Don't oily rags self-combust?


You really are too risk adverse.
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WD Forte
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PostPosted: 12:56 - 01 Mar 2024    Post subject: Reply with quote

Get 6 point sockets, they have less of a tendency to round off
rusty old nuts and bolt heads than 12 point ones especially when doing the first strip down on a rusty old thing.
A 3/8" drive socket set will do nicely

JIS screwdriver bits will help avoid camming out on screw heads too.

Rounded off nuts and cammed out screw heads can add a lot avoidable
time and arse ache during strip down.

As above, an adjustable spanner usually does more harm than good
on a bike
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Last edited by WD Forte on 11:33 - 10 Mar 2024; edited 1 time in total
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Nobby the Bastard
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PostPosted: 13:18 - 01 Mar 2024    Post subject: Reply with quote

WD Forte wrote:
Stufff


Are you dangerous if we get you in our mouths?
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A100man
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PostPosted: 13:33 - 01 Mar 2024    Post subject: Reply with quote

Nobby the Bastard wrote:
WD Forte wrote:
Stufff


Are you dangerous if we get you in our mouths?


Oh Nobby.. Rolling Eyes
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Robby
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PostPosted: 14:46 - 01 Mar 2024    Post subject: Reply with quote

Assuming you're going to eventually reduce it to a pile of bits and fix them all individually, you'll need a lot of shelf space. A bike in component form takes up an awful lot of space.
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stinkwheel
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PostPosted: 17:35 - 01 Mar 2024    Post subject: Reply with quote

I feel a nylon hammer would be a useful tool for dealing with this particular bike. Also a nut splitter, junior hacksaw and some good HSS drills.

Automatic transmission fluid mixed 50:50 with acetone makes an excellent penetrating oil but you need to keep it away from rubber and plastic parts because the acetone doesn't play well with them. If this is a concern, substituting paraffin for the acetone also works well, not quite as good at creeping into gaps but doesn't turn plastics into Dahli paintings.
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jeffyjeff
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PostPosted: 19:49 - 01 Mar 2024    Post subject: Reply with quote

WD Forte wrote:

A 3/4 drive socket set will do nicely

!!!! He's working on a 125, not an earth mover. Wink
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Nobby the Bastard
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PostPosted: 19:57 - 01 Mar 2024    Post subject: Reply with quote

You are suggesting acetone when he's shit scared of wd40 and oily rags?


Very Happy
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