Hi Pete,
Aside from Hobby services, I'm not sure where to send your engine for repair. A good question for a post on RCU. I know there are people out there who do good repair work, but I don't know who they are.
I do have a question regarding the pump: do you flush it with methanol once a year ( during the winter or ever)? I always do it with my pumps if I'm not going to fly the airplane for mpre than a month. Then I connect a piece of fuel tubing from the pump inlet nipple to the out let nipple, effectively sealing the pump. This prevents accumulation of fuel residue 'gummming' up the pump. You may also have a scratch in the liner/sleeve which is compromising the piston/sleeve fit causing lose of compression which usually manifests as erratic needle setting and poor idle. Also hot starts a re very difficult.
Sorry, I'm not really helping, but without the engine in hand it is pretty tough to diagnose problems. I have done all my own engine work since I was a kid, back in the '60s. My dad encouraged it and I enjoy it. The Hanno Special is one of my all time favorite engines: loads of power and very user friendly!
Regards,
Will BArtlett
-----Original Message-----
From:
[email protected]
To:
[email protected]
Sent: Sat, 28 Oct 2006 7:04 PM
Subject: OS61 Hanno
The following was sent to you through RC Universe:
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Hi Will,
Thanks for your response to my post. Although I have been flying for 25 years I
never got into engine repair so I don't know how to check the condition of the
piston and sleeve. I have been flying this plane for over 15 years but only on
occasion. Probably not more than 25 flights/yr.
It had been running fine for years but started to run erratically. It would
surge, be unresponsive to needle valve settings and would not idle reliabilily.
I replaced all of the fuel tubing - no change.
When I sent it to Hobby Services they said that they thought it was a pump
problem but they could not work on it.
What do you think? Do you know someone that I could send it to to have it
checked out? Pete Stephans