Originally Posted by nesan

It could be under-compressed too in my next run I will tight the compression.

Thank you guys it is rocking now. Today it was a tight day for me, I went to Hobby centre 9.30 a.m around 25 miles away, the shop was close. Hear normally shops open at 9 - 10a.m . but he opens 11a.m. if I go back home my other schedules will sink me down, my wife always have a long list to keep me busy in all my vacations . every ideas you guys gave me is consuming my brain, so I decided to wait and finish the business. at last shop owner came at 11.15 a.m. the bad luck he had no stock of 11X5. I bought the closest one Master propeller 11x6.

at last my wife let alone around 6.00p.m in sympathy . I trim the propeller from 11x6 to 10.75x6 as "Qazimoto" said, yes I want to value any idea precisely.


hear is the prop before trim



and the new batch fuel I made yesterday was ready to fire. this time I use 38 - 35 - 25 -2. 38% kerosene. and this time I use Amsoil cetane booster. before I was using Poler service cetane booster " it contain little anti gelling agent too, according to their label"



from this one to


to this one

here is the consequence !


With trimmed propeller 10.75x6

video
1) https://youtu.be/qBDGQRRaou8

2) https://youtu.be/Yg-jEw5DUQM

I fill 20 ml fuel run out in less than 5 minuets run is it normal?
you guys are rocking thank you very much.

let me know if I can leave alone this end play or better to put a thin copper washer? ref video 2