Bobbing a jailing jh125

[Mightymouse]

Hi guys.
I'm looking to bob out my 125.

Anyone done this before?

[Ste]

What do you hope to achieve by attacking the bike with an angle grinder?

[Nobby the Bastard]

[Jazoli]

Its simple, don't.
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Bike:Speed Triple

[The Shaggy D.A.]

[Mightymouse]

Why all the hate on customising a bike?
I don't get it

[Ste]

What do you want to gain from bob tailing it?

[Bhud]

If you try to turn it into a bobber, chances are it will be unsafe and/or illegal to ride on the road. Are you a trained-up welder? Do you have a jig to keep the frame dead straight while you make up the rear end? What sort of steel tubing or kit do you propose to use to make up your rear end? What sort of steel makes up the frame to begin with? Has this bike been used as a platform for a bobber before, and are you in contact with skilled people who can offer their experience and advice? Can you afford it (EVERY project bike is a hit on the wallet)?

I Googled that bike. It's supposed to be an off-road bike. Have you taken it off road? If you haven't, you never know, you could find it great fun, in which case you will not want to bob it.

I am not a trained welder. I can weld. I would not ever, not in a million years, consider a flimsy Chinese 125 as a suitable platform for a bobber. Also, because of the limitations of my skill and the value I place on my own life, I would never do it with anything other than a suitable kit (e.g. TC Bros). Any of the mid-sized old Japanese bikes, or the proverbial Harley, sure, and it's been done thousands of times. But you need to know a lot about the properties of the steel with which you're working, welding theory and techniques, stress points on the frame, etc.

If your plan is to roughly bodge together something to pass off on Ebay to the hipster crowd, then that's unethical and you can GTFO with that. Take risks with your own life, not with others'.

Honestly, your best plan is to keep the bike as it is, upskill as much as possible in welding and motorcycle design theory and engineering, keep the value in it and sell it as a learner-legal 125 when the time comes. Trial and error comes at huge potential costs to life and limb when you're talking about motor vehicles.

[Mightymouse]

Hi bhud, thanks for the first sensible reply. My jh125 is a road bike not a trail vike

Unsure what your referring to as illegal?

As I will not be altering the engine cradle area of the frame and only altering the frame aft of the shock mounts and not altering the triangulated section to absorb shock loads I won't need a jig. Even if one were needed a jig could be fabbed up easily enough.

As for welding my skills are fine. Material for building a curved rear section will be erw tube. Dom would be overkill. I have a nice looking tank from an old BSA which i plan to use. Will need to cut off the original tank rubber mounts and weld on new ones, no side panels and hidden electrics. The wider cm200 rear wheel has the same spindle size but will need to check if it fits in the swing arm and a matching front spoked wheel

[Ste]

[Bhud]

OK, cool. You sound like you aren't new to this, and that's great.

What I think these guys were concerned about was some clueless 17-year old kid building a death-trap, which is obviously to be discouraged. You seem to have some awareness of what's involved.

The legalities don't really bother anyone, to tell the truth. Some people say, any frame modification at all will demand an MSVA. Others say, if it's just the subframe, then no need to bother with that. Most bobbers I've seen are on their original plate. It's just safety that's the number one concern, and after that, the sunk costs.

I've found that the forum at chopcult.com is fantastic for queries like this. It may take a couple of days but you'll get your answer from there. Haven't looked at it in detail, but it looks like your 125 doesn't have a typical dual cradle frame, and that's the main way in which it differs from typical Japanese bobber projects.

[stinkwheel]

Legally, any modification to the frame triggers a requirement for an MSVA test. just so you know that. May people get away with it but it just takes one knoweldgeable copper who is a registered VOSA inspector and you could be left standing at the side of the road watching your bike disappear on a tow truck.

If you have a bolt-on subframe, all gravy in that respect. Crack on, fabricate something cool

Remember it is pretty much garaunteed to run like a total bagowank if you bin the airbox.

Also remember wider/higher bars means longer cables.

Fitting clip-ons without rearsets makes the rider look like a shitting frog. Every time I see a "bobber" with ace-bars and standard peg positions, I and many others think of the kandoo frog so keep that in mind.

Not having a front mudgard seems like it might be a good idea. I'd suggest you take it off and go ride through some puddles to see what that's like.

Remember if the mudguard has an integrated fork brace (like a bit of pressed steel under the mudguard), you'll need to fit some form of brace if you remove it.
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[Teflon-Mike]

Google images chucked up pictures of the Jailing 125; one looked like a clone of the old Honda XL100. Another, the 'Nostalgia' variant CG125, another a late 'plastic' Brazil era CG125, and lastly what looked suspiciousely like a clone of the Honda CB125 TD-J, twin, with cast wheels. And a few photos of bitzas in the middle.

Soooooo, first question WHAT exactly have you got?

Mention of not cutting inboard of shock mounts, suggests a twin-shock, which discounts a mono-shock TD-J derivative, so one of the singles then, but either way, could be an OHV or OHC engine....

Moving on..... usual advice is that customising any motorcycle is usually a pretty good way of spending time, effort and money... usually a lot more money than imagined, planned or admitted to, to make bike less comfortable, less reliable and less valuable....

In the case of a Jailing? There is an argument that its probably worth very little to start with... so what the heck! Cant possibly be worth 'much' less anyway....

B~U~T near standard, working 125, is worth about as much as the model ever will be... so why chuck time effort and more money at it to make something less usable and loose money? And, make life difficult for yourself when no-one knows what the heck it is....

Why not start with something else?

There's plenty of big bikes that present themselves, for which there are at least Haynes manuals, and the model name appears in the emporiums listings when you want a spark-plug or brake pad, and the insurance companies data-bases, before you start stammering when they ask what 'mods' its got.... a-n-d a bigger bike might actually stand some chance of actually 'cruising'.... the laid back easy rider 'look' is all rather wasted when you have to change up three gears before you are doing 30mph, and have to change down three gears to go round a corner.... Why not 'bob' a Yamaha Viagra or a Honda Rable or something, which is probably cheaper to start with and more likely to be worth more when done, and easier to do and live with?
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[Easy-X]

I think this is more likely to be a generic YBR knock off than an off-road bike, judging from Google Images.

https://lh3.googleusercontent.com/proxy/5RvIHJPkoYgWe3UctJNtB-XHXCM_n3LMm073h8zIeq0AdAmT9ChttIF_LUF1cVn4-yvDKkyP5rZrn1ABFIepZ8_BzrV14Gcxn0rNiUd9wmlo5dM

If it were a YBR then chopping the back and welding in a hoop wouldn't be a problem (beyond "why ruin a perfectly good bike?") but any frame made from Chinesium already has less structural integrity than rotten bamboo If I were you I'd also weld in a cross-brace between the shocks (or reinforce what's already there) or I could see the back folding up on the first bump

Still, if you want to get into customising frames best start on something expendable. Make sure your test rider is too
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[Mightymouse]

[Mightymouse]

I read your post and genuinely thought you were trolling, then I read some of your website and concluded you always talk like this. Anyways....

[Nobby the Bastard]

How do you ruin something that works? By making it lethal to ride.

Fuck off and dont come back until you've hospitalised yourself on the pos that you no doubt ' create,' to suit your own personal 'vision'.
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[Mightymouse]

[Ste]

Any thoughts yet about what you want to gain from bob tailing it?

[recman]

[spottedtango]

https://www.ebay.co.uk/itm/HONDA-CG125-Single-7-Silver-Manual-Petrol-2008-CAFE-RACER-BRAT/133349367274?hash=item1f0c3dddea:g:BbkAAOSwkMNeHvI6

https://www.ebay.co.uk/itm/HONDA-CG125-Single-4-Blue-Manual-Petrol-2005/133349367281?hash=item1f0c3dddf1:g:hrkAAOSwGIVeHKU6

https://www.ebay.co.uk/itm/HONDA-CG125-Single-4-Silver-Manual-Petrol-2006/133349367277?hash=item1f0c3ddded:g:7kwAAOSwk99ebyoO


Seems to be the thing just now. The prices are interesting

[Easy-X]

They are Hondas though.

Okay, so you have a meek 125 of some sort, you strip it right back to the bones and have something lightweight and fast, errr....

Or you could just buy a dirt bike that was built to that spec already. Form over function
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Husqvarna Vitpilen 401, Yamaha XSR700, Honda Rebel, Yamaha DT175, Suzuki SV650 (loan) Fazer 600, Keeway Superlight 125, 50cc turd scooter

[WD Forte]

All this eye wateringly over priced bobber cafe shite amazes me
Take the mudguards off as no ones ever going to ride it far and certainly
not in rain!
Make it horribly uncomfortable cos above
Gloss over the fact that despite its 'cool' looks its a gutless 10hp 125
Waste a shit ton of money trying to make a silk purse out of a sows ear
then expect folk to throw dosh at you.

You never see these bikes being actually used as motorcycles do you?
I have little time for folk who will do anything but actually get on and ride the feckin things
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[redeem ouzzer]

If people really are paying north of 3K for a ruined CG125 then I really hope Covid takes out most of us.....
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[Nobby the Bastard]

Fuck sake. The seats look like they came off a 1930s massey fergusson.
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trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Sprint ST 1050