Saturday, 11 July 2020

Phour days to phantastic - Fine tuning the dirty snowflake (pt. 7)

At last - the dirty snowflake is transitioning from making her (barely) run towards ironing all the bugs out that were considered too minor to bother with, when the initial goal was to make her run in four days.

As such a testride was had and a mighty fine one it was. Tyres were scraped in, tachometer needles learned that their rightful place is on the lower right corner of the scale and essentially zero f*cks were given that day. On a more serious note: it's hard to believe that this is a pushrod v-twin with 4-valve heads as the old girl quite happily revs past the red-line and actually really comes to life, once 6000rpm are exceeded and then, honestly, she's one quick lady.


The handling is a lot better than I anticipated and I think I nailed it with the tyre-pressure, as she's very willing to corner as hard as she'll suffer.


Once the brakepads had settled in, well it became rather obvious that the forks might be a bit too soft. 


The biggest issue (still) is the carb. First off, there's still tons of rust coming down from the tank. The picture below shows a brand new filter after 75km.


The other thing is, that I had to swap one of the carb-housings along the way and apparently I only swapped needles and needle jets in only one of them.






 As the allen-bolts were a bit too long (and tended to come loose) some spring washers were added.



And lastly a new filter was fitted.


Now the factory manual states the mix screw 2 full turns out, but honestly this doesn't work at all with this one, so for now (i.e. until more time for fine-tuning comes up) 0.75 turns will have to suffice. And all of a sudden the old girl starts fine, runs well even from low-rpm and then has got a nice second bite, once she goes past 6000rpm.

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