Hello,
 I have got hold of another Saito 62 C/L version. I need to run this in and keeping the revs down is not easy! I blocked off the venture of my first 62C/L version and took out segments of the blocked venturi to vary the revs. It sort of worked but an absolute pain in the ****. Just wondering if someone has a spare R/C venturi I could buy or borrow (all expenses paid!). It would make the running in process very much easier. I can then do the famous conversion which works so well on my first Saito 62.

Happy Christmas,

Andrew.

Andrew,
I've broken in and flown several Saito's, from a .40 to the .72, and I no longer worry about choking it down with a throttle or anything. I simply mount the biggest prop that will fit during the initial break-in, and the prop load by itself limits the RPM.  For example, to break in my .72CL, I used a 4-blade (!) APC 14x10 that I had laying around (don't ask why), and fired it up on stock venturi and a 10% nitro fuel. The engine developed only 6k RPM or so.  After 2 tanks, I switched to a 14x8 Zinger; the RPM went up to 7k or so, and I ran it for 3-4 tanks like that.  Then a smaller prop, etc, etc.  The last run was on the intended flying prop at target RPM, and by then the oil coming out of crankcase was clear, which is a sign to me that the bench break-in phase is complete. 

Hope this helps.

I flew a Smoothie with Saito 40 power. With Bob Reeves carb bolt screwed down to half Venturi it was 5 second laps on 60' lines.  Screwed it in 1 turn check with tach. Still fast another turn towards Closed. Flew  it and was doing 5.5 laps.

Hello Bob,
Thanks for your very kind offer. An RC acquaintance has offered me the use of an R/C carb to break in my C/L 62. He is a fair weather flyer and it is pretty horrendous here in the UK, with storm after storm! So I am busy breaking in my new Saito, before some good weather appears!

Happy New Year,

Andrew