Speedmaster 20 mono, good day testing

P THOMAS · Nov 12, 2010

Went out testing today, 75 degees in Illinois in Nov.

Ran the Speedmaster 20 mono. had some good runs and speeds. This is the US1 B mono that Bob M. wanted to buy for $50.

Mac21, new Coopermuffled pipe, x437 prop, This is a happy boat, just works well.

here is a video

Terry Flynn · Nov 12, 2010

Looks good Phil. Sounds like its 2 staging on the pipe.

Well now that you have that out of your system, it's time to stop playing

With boats and start building some boats.

Terry

Chris Wood · Nov 12, 2010

i would say you better park it and save it for next yr phil very rare to get a pipe to 2 stage

looks good

chris

Richard Dahlheimer · Nov 12, 2010

Great run, Phil. We have had great testing weather in MN also. Only the second time in 20 yrs running r/c boats, that we have had a November like this. Richard D

P THOMAS · Nov 12, 2010

Chris Wood said:
i would say you better park it and save it for next yr phil very rare to get a pipe to 2 stage

looks good

chris

Is that what is sound like to you too? Really picked up more speed when it did. Cooper pipe set at 7 1/4 but still mills slow great too.

Andy Brown · Nov 12, 2010

58.6 mph is srtollin' for an X437! Got the RPM going on baby! Will you take $75 for that boat? LOL

P THOMAS · Nov 12, 2010

Andy Brown said:
58.6 mph is srtollin' for an X437! Got the RPM going on baby! Will you take $75 for that boat? LOL

Thanks

Bob has first dibs on it, if I sell. Do need a new rod for it though, email me if you have parts.

Ian Inverarity · Nov 12, 2010

Very nice, sounded like good revs! B)

Jerry T · Nov 12, 2010

Phil, you need to sell me some of them vitamins you give that motor.

Sounds really sweet.

Wesleys Custom RC · Nov 12, 2010

Jerry T said:
Phil, you need to sell me some of them vitamins you give that motor.

Sounds really sweet.

Now if we could just get em to drive like that race day lol You gotta remember Phil, we only race around here when it's 95+ and 100% humidity.

Luca Gray · Nov 12, 2010

Phi

very nice, at is as fast as the new record set by Jim Wilson at the NAMBA trials couple weeks ago,

cheers Luca

Rick Doane · Nov 12, 2010

P THOMAS said:
Ran the Speedmaster 20 mono. had some good runs and speeds. This is the US1 B mono that Bob M. wanted to buy for $50.

Mac21, new Coopermuffled pipe, x437 prop, This is a happy boat, just works well.

here is a video

Excellent! I believe that was a 3 stage run. You do not hear that very often. I'll bet if you felt the carb, it would have ice on it.

Rick

Bob Morton · Nov 12, 2010

P THOMAS said:
Ran the Speedmaster 20 mono. had some good runs and speeds. This is the US1 B mono that Bob M. wanted to buy for $50.

Mac21, new Coopermuffled pipe, x437 prop, This is a happy boat, just works well.

here is a video

Hi Phill

ZOOM ZOOM offer still stands

shoboat · Nov 12, 2010

Phil,

Nice runs back to back.

Aprox. 35,136 RPM that is rollin for a MAC-21.

Not many other motors can do that.

Thanks For Sharing,

Mark Sholund

Ian Inverarity · Nov 12, 2010

shoboat said:
Phil,

Nice runs back to back.

Aprox. 35,136 RPM that is rollin for a MAC-21.

Not many other motors can do that.

Thanks For Sharing,

Mark Sholund

Mark,

Is that based on measurement from the sound? If so, how did you account for the doppler effect of the boat heading directly towards the mic?

Cheers, Ian.

P THOMAS · Nov 12, 2010

Luca Gray said:
Phi

very nice, at is as fast as the new record set by Jim Wilson at the NAMBA trials couple weeks ago,

cheers Luca

Thanks, but setting a timed record with backup runs is harder than just zooming around on the radar.

P THOMAS · Nov 12, 2010

shoboat said:
Phil,

Nice runs back to back.

Aprox. 35,136 RPM that is rollin for a MAC-21.

Not many other motors can do that.

Thanks For Sharing,

Mark Sholund

Yes, I bought that motor from someone, it had some mod work done, and the piston fit is real good too.

You figured that rpm from the prop and speed reading ?

cooperpipes · Nov 12, 2010

Hey Phil

Great run looks like that pipe and motor are working real good together

Lynn

carlnoki · Nov 13, 2010

Phil;

Give Stu Barr a call.

order a rod for a Valvola.

Carl

shoboat · Nov 13, 2010

Phil and Ian,

That is correct.

Simple math with the speed and pitch of the propeller.

Mark Sholund

Speedmaster 20 mono, good day testing

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