[TheDuck]

As per previous threads, no prize etc!
A couple of photos include a big hint ......
Oh and for once this bike was sold in the US (and most other places.

 

[TheDuck]

70's and larger ....

 

[TheDuck]

How about the bottom of the bike?

There is a big clue in the second photograph, look for the dash of colour, this is original. That should give you the manufacturer. The other big clue is the cylinder head ......

 

[TheDuck]

The third pic was the biggest clue for me.
1975 ?

The shock? When I posted that photo I thought that was a big clue but only to you really specialised territory.
1975 probably but could be 74, waiting for a dating certificate.

Do I say it out loud?

Feel free if you want to......or you can choose not to and let others less certain to throw out guesses and see how many people get there.

 

[TheDuck]

Yamaha DT of some description?

Nearly there ...
How many cc's?

 

[TheDuck]

@iXXion @Partsguy your thoughts please ....

 

[TheDuck]

Well here it is

 

[TheDuck]

Nice one Pete. Going to be a sympathetic spruce up or full resto? Tried to get a chap I used to work with to sell me one of these. He wouldn't, so it's probably still rotting away in a damp barn somewhere

Probably somewhere in between.....but knowing me I will probably strip it down to the last nut and bolt.
The tank needs some work, it has in the past rusted through in all the places you would expect. The repairs (lead) were effective, the tank doesn't leak but boy are they ugly!
Repairs underway.

 

[TheDuck]

Good advice @beestoys , I've still got the odd scar on my shins from kicking old Brit bikes.
FWIW we used to like shoving potatoes up exhaust pipes and then watching the owner getting fired up into the air ............. oh the fun of being a teenager.

 

[TheDuck]

What's compression release?

Not my bike but this is the unit

 

[TheDuck]

We once stuffed a whole big ball of steel wool down a DT350A muffler.

In my road rallying days (4 wheels) we used to shove steel wool pan cleaning pads into the exhaust in order to pass the noise testing.
Spectating at the first few corners was always quite dangerous as all the pads were fired out.