just did the final plug chop test on my stock 85 Aero 50. Looks great to me but like some other inputs. I did look at Wiki and looks in the good range to me. I installed a new plug, warmed it up, ran around town for bout 5 miles then took her out in the county ran it wide open for a little better the a mile. Got 38 mph at the top end (I'm about 215). Scoot runs great and starts fine both cold and hot. just making some final adjustment. Check out pics below.
Thanks to all on the net!
Plug Chop Test. Looking for comments.
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Plug Chop Test. Looking for comments.
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1985 Aero NB50M - Stock
1986 Spree NQ50 - Stock
1986 Spree NQ50 - Stock
Re: Plug Chp Test. Looking for comments.
Looks like the good plug in my Haynes manual.
Maybe give it another look over after some more miles just to be sure.A brown, tan or grey firing end indicates that the engine is in good condition and that the plug type is correct
1983 Melody Deluxe II / ND50MC
1984 Melody Mini / NP50D
1979 Simson Schwalbe KR51/1 (think 2 wheel trabant/ East German Honda Cub)
1984 Melody Mini / NP50D
1979 Simson Schwalbe KR51/1 (think 2 wheel trabant/ East German Honda Cub)
- paulpauly7
- CB900F
- Posts: 1945
- Joined: Tue Feb 21, 2012 6:57 pm
- Location: nz
Re: Plug Chp Test. Looking for comments.
you need to be looking at the soot ring at the bottom of the porcelyn not the tip .Google how to read a plug chop.
86 Nifty Fifty (spree)
ZX disk brake
Kitico 120kmh speedo
AF18 ZX ported
Polini corsa
Malossi crank
CTmani
24mmOKO
40pilot118main
Scorpion pipe
8.44 to 1
Michelin s1
71.3mph
92 yz125, 94 crm250
ZX disk brake
Kitico 120kmh speedo
AF18 ZX ported
Polini corsa
Malossi crank
CTmani
24mmOKO
40pilot118main
Scorpion pipe
8.44 to 1
Michelin s1
71.3mph
92 yz125, 94 crm250
Re: Plug Chop Test. Looking for comments.
There was no ring at the bottom that I could see just the one about half way up that is shown in the picture. It was half way up and not completely around he insulater just one the one side. I took it that must be the side directly opposite from the exhaust port.
1985 Aero NB50M - Stock
1986 Spree NQ50 - Stock
1986 Spree NQ50 - Stock