Yamagama 100

**Yow Ling** · 8th January 2010, 16:45

Any news on this bike?
Gone a bit quiet round here

**Mrs Busa Pete** · 8th January 2010, 16:51

working to much and missed taupo plus xmas. will pull my finger out for feb at mt wellington

Originally Posted by Yow Ling

Any news on this bike?
Gone a bit quiet round here

**Pumba** · 8th January 2010, 17:10

Originally Posted by Mrs Busa Pete

working to much and missed taupo plus xmas. will pull my finger out for feb at mt wellington

haha, tui moment

**Bert** · 8th January 2010, 21:15

I'm looking forward to the write up on how this all goes.
I wander if this is the answer for beating fxrs? could 30hp be achievable? so many rhetorical questions sorry.

**Mrs Busa Pete** · 19th March 2010, 15:09

ITS ALIVE
spent 1 hour on monday half of that with a earth in the wrong place to get to a point that if i pull the choke out and give the back wheel half a spin on the rear stand it fires up and reves if i only had a tacko on it to see how far it reves .theres some electronic hour meters and tacko on trade me that should do the job .
just have to customize the radiator then of i go to a track near me for the acid test

**Yow Ling** · 19th March 2010, 18:09

Keep us posted.

**Hinny** · 20th March 2010, 20:54

Originally Posted by Mrs Busa Pete

working to much and missed taupo plus xmas. will pull my finger out for feb at mt wellington

Two thousand and eleven
Good things take time.

**Bren_chch** · 22nd March 2010, 21:20

can you make a short video, would love to hear this running!

**TZ350** · 23rd March 2010, 05:49

Another 2-Stroke special....

**Bert** · 24th March 2010, 17:31

hmmm, cant wait for the dyno results...

Two stroke revival.

Just thinking /reading back over this thread, could it be possible to machine the piston out to fit the TZR pin ?
looking at the standard rg400 piston, there is at lease 2mm-2.5mm of significant structure around the standard pin, as you only need to take it out to 16mm, (& cut new clip groves). could this be an option? rather than bearings or bushes?? or is there the potential for this to turn to custard?
(sorry I'm not an engineer).

B

**bucketracer** · 24th March 2010, 21:24

The trick I have seen Dad use for boring piston pin bosses is to mount the piston on the lathe saddle using a pin in the tail stock to align it and an adjustable tip boring bar in the chuck. The bosses were sometimes honed sometimes not, After the piston pin bosses were bored right through the piston was then mounted on an expanding pin held in the chuck to machine the circlip groves, one side at a time.

**Bert** · 24th March 2010, 22:12

Originally Posted by bucketracer

The trick I have seen Dad use for boring piston pin bosses is to mount the piston on the lathe saddle using a pin in the tail stock to align it and an adjustable tip boring bar in the chuck. The bosses were sometimes honed sometimes not, After the piston pin bosses were bored right through the piston was then mounted on an expanding pin held in the chuck to machine the circlip groves, one side at a time.

(Sorry I'm not an engineer)

but from what i gather that was a yes in theory?

**gatch** · 27th March 2010, 09:35

Originally Posted by bucketracer

The trick I have seen Dad use for boring piston pin bosses is to mount the piston on the lathe saddle using a pin in the tail stock to align it and an adjustable tip boring bar in the chuck. The bosses were sometimes honed sometimes not, After the piston pin bosses were bored right through the piston was then mounted on an expanding pin held in the chuck to machine the circlip groves, one side at a time.

That sound like an awful lot of fucking around ? Could you use the current gudgeon pin in a big drill chuck on a radial drill, use that to get the pin hole vertical and just hold it in a regular vice (with soft jaws) and attack it with an adjustable reamer ? Or do the same thing in a mill ?