@jonne123

No disrespect meant from the start! But I’m guessing that you’re about 17 and haven’t ridden a great deal of bikes?
Every 125 Has been restricted to about 12bhp since the late 80’s AFAIK. Any bike that is significantly above that has been de-restricted and/or tuned.
You can unrestricted early dtr’s by ‘pinning’ the power valve open. This will give you higher bhp but will basically make the throttle an on/off button with terrible response.
Later bikes I don’t know as much. You can unrestrict them and the variable power valve will still give you better low rev torque/response (I’m guessing that is what you mean by throttle response?)

Do some reading up on deristricting your year model bike, then do some riding. Stop worrying about numbers bud, enjoy a wicked little bike for what it is, before yearning for more...

@Stevie-Wonder

I learned to change gear on a dt50mx, 14 years old on the local rugby field. 2 nights later I was riding it round the town pitch black in the middle of winter. I ended up falling in love with 2/‘S, has more Vespas and lambrettas than I can remember. Margate is one of the places I’ve actually ridden to, never had any problems cause nearly all my scooters were chopped ️

I met an old boy with one leg through buying DTR bits on fleabay, he used to race 2/‘S he’s got a Dt LC with an rd200 twin engine in it! Also a beautiful unmolested kh350 (iirc) I’ve never seen one of before. As well as a mystery covered bike I haven’t asked about yet. He only lives a few miles away from me. There are definitely some really interesting old souls out there!...

Am legal @ long last! Only my CBT stands between me & nirvana! Two stroke heaven! ...

Better pic!

I only got this in May, but it’s MoT time tomorrow!

Eye exam in the afternoon so I can read a number plate @21 metres. CBT in a week with luck...

Am insured, so only tax needed as well...

It’s been 25 years since I was last legal on a bike, so I’m pretty excited...

I didn’t think mounting the clocks was a problem, I thought it was the drive gear wheel/spacer that meshes to the Yz wheel?...

@chris
Think of tri-age, like war medics do. Does it really need the amount of attention, that could be better used on something else?...
I’d just wire brush it down, then satin black it. Job done. I’m just as guilty of over thinking things sometimes 🤪 check out Sound Blaster horns ...

The screw/nut adjusts the sound/pitch, like said...

Please turn it anti-clockwise till you can see the most of the piston without it being occluded by the power valve. I don’t know how else to say it...

@jimmydc98

Get it tig welded. Try any garage, engineering firm. They’ll probably do it for the price of a beer...

@declan
Cheers bud, she’s seriously ginger. Her eyes even shine amber red at night, instead of greens~white...

@calum
Cheers bud...
2 nm’s is where my wrench kicks in. It’s too near the threshold for me to trust. If I want to do it right I really want new studs and dome nuts with washers.
I’ve never had troubles with single cylinder bikes before, then again none of them were liquid cooled...

@everyone

What size torque wrench are people using to torque down the cylinder head while in the frame?
I only have a 1/2inch drive that is way to big to fit...

@dan28
I don’t have a electric start. I have an 88 DTR125 Also my indicator relay is a 3 pin one behind the headlight. These 2 are 4pin. They control the sidestand kill switch, which the previous owner removed from my bike

PS modern bikes are a bit more solid state,...

I know it doesn’t sound right, and might not be as I stated it. I am sure that it is to stop you pulling away with the side stand down. 1 neutral switch, 1 relay. 1 sidestand switch 1 relay. It’s how old computers worked before solid state. On a newer bike the ecu would probably do the job...

This is weird, I was seeing lots of gaskets made of composite for dtr’s (125) made by Athena. Now i can only find one and that looks like they used a 170 pic for the listing.
Do Athena make composite gaskets for a 125? Or is it just 170?...

@markus-w
Cheers bud!...

Another question!

Are there any speedometers, of my size and shape, that go over 80MPH?

Are the composite gaskets much thicker than the metal shim gaskets? I’m wondering about it affecting the squish band gap.
I got 200 miles out of the Chinese one I had kicking around. I have to try the copper one now, with Hylomar to fill the gaps. Just till I get some pennies in my pockets. Or unless the copper on is a keeper

@calum
I don’t even know if it’s a good price cause it’s a 125, not a 170?
Depends what country you live in. Postage can be bad, customs and postage? I don’t know...

@nottsbiker
I think I’ve sussed it. Relay 1 is to ‘tell’ the circuit that it’s out of neutral (and so activate relay 2). 2 is to ‘tell’ the circuit that the stand is up and safe to run. If the stand is down it will earth/kill the ignition!
That took me some thinking!!

@Oisin
Why do you want an Athena 125 kit? Regardless of who or where you buy it?
For a 125cc I would repair or replace second hand...

175cc is a different matter...