Pipes - Plugging After Long Use - Cleaning?

[Wayne Powell]

Hi Brian,

Plug the stinger end of the pipe
Get some acetone/thinners and fill the pipe about half full
Shake the acetone around in the pipe for a few minutes
plug the other end of the pipe and let sit overnight on it's side
roll the pipe 180' and let sit overnight again
Shake on last time then dump out the carbon/acetone mix

I'm not sure what carb cleaner will do to the pipe - that's pretty strong
stuff.

The way the Bolly pipe is designed uses baffles with 2mm slots cut around
the edges.  Over time these can plug if you run rich or hot and don't clean
the pipe out at least once per year.  This is mentioned in the instructions
that come with the pipe.  You'll get your 1000 RPM back once cleaned.

Please let me know how it goes.

Wayne Powell
Bolly Props North America
http://www.BollyProps.com
1-877-WEFLYRC

> -----Original Message-----
> From: discussion-request at nsrca.org
> [mailto:discussion-request at nsrca.org]On Behalf Of Brian Young
> Sent: June 19, 2003 7:23 PM
> To: discussion at nsrca.org
> Subject: Pipes - Plugging After Long Use - Cleaning?
>
>
> I think Ive heard of this before but has anyone ever
> experienced a pipe becoming plugged after prolonged
> use. This is a Bolly 590 which has been used for three
> seasons now. I couldnt figure out why I was down
> 500-600 rpm, 2 stroke engine is fairly freshly
> rebuilt, runs ok, just down on RRRRsss. I finally put
> the thing on my test stand and noticed the pipe was
> hard to blow through, swapped the pipe with another
> one and found 1000 rpm.
>
> Now it turns 17x10N at 8500 on 25% w/ Bolly 565n
> Was at 7500 on 25% on the plugged Bolly 590.
>
> Normally I run on 15%, but was curious whether nitro
> would pickup the rpm before I figured the pipe must be
> restricted.
>
> Is it possible to clean the semi plugged pipe out? Ive
> been trying carb cleaner.
>
> =====
> Brian Young
> Tulsa
> b4598070 at yahoo.com
> 918-745-6046h
> 918-838-0900w
>
> __________________________________
> Do you Yahoo!?
> SBC Yahoo! DSL - Now only $29.95 per month!
> http://sbc.yahoo.com
> =====================================
> # To be removed from this list, send a message to
> # discussion-request at nsrca.org
> # and put leave discussion on the first line of the body.
> #
>


=====================================
# To be removed from this list, send a message to 
# discussion-request at nsrca.org
# and put leave discussion on the first line of the body.
#