The beast is back

[dwilfong]

CMB Gold head EVO .77 and a very special prop. ABC 2717 23 38 cut down to 2.5

Hope to go testing tomorrow if the rain holds off.
I think a few in NAMBA dis 3 remember this boat and set up.
This time I have a much better prop to try out.
Will see if I can keep it right side up .......LOL

 

[Brian Sorgente]

What kind of hull is that?

 

[PiroSteel]

100% Calcraft

but I don't know, is there the under site of strut round or flat

 

[Brian Sorgente]

Thanks, I thought it might be a Calcraft but wasn't sure.

Brian

 

[dwilfong]

39" Cal craft the strut is a CMDI round bottom strut.
Well did not make it down the back strait the first time and hit a turtle there goes the 1 off prop.......@#$%@&%^%$#$@@#$$%
SO fixed the rudder and stuck a ABC 2517 38 bar on the back.
Same prop and eng I run in my Zip kit rigger.
It is fast as stink.
Gust have to be carful driving it.
It is the devil reincarnated.
It drives gust like my Vector so I feel right at home.....LOL

 

[Wasted wages]

OK.....have to ask.....

what is the red wrap on the pipe?
and how do you build a .77 CMB ?

nice boat by the way... should be a rocket with that motor in a 39" mono...

 

[Andy Greene]

OK.....have to ask.....

what is the red wrap on the pipe?
and how do you build a .77 CMB ?

nice boat by the way... should be a rocket with that motor in a 39" mono...

Lmao - anybody want any popcorn

 

[dwilfong]

Andy you still got the PIC?????.........LMAO>>>>>>>>>>>>>>>

 

[dwilfong]

The red stuff is silicon tape to keep the heat in the pipe the harder you run the shorter it thinks it is.
The .77 is a .67 EVO black case eng with a .80 EVO black case piston and sleeve in it. Big bore short stroke eng.
YA it is FAST.........
It is for fun not racing.

 

[Alan Elzer]

The red stuff is silicon tape to keep the heat in the pipe the harder you run the shorter it thinks it is.
The .77 is a .67 EVO black case eng with a .80 EVO black case piston and sleeve in it. Big bore short stroke eng.
YA it is FAST.........
It is for fun not racing.

David do you know the boro for the 0.80 EVO SLEEVE, think I might have few, also got several black cases

 

[Wasted wages]

so, .67 crank and rod ?
bore the case and set deck height...?

 

[dwilfong]

Yes .67 crank and rod.
The sleeve OD is the same will gust drop in.
You have to make a new head button and adjust the port timings.
Will check on the bore tonight Alen

 

[Wasted wages]

cool,,,,thanks for the info...

BTW,,,, I have been out of boating for a while and starting to get back into it..

Does anyone have a fix for the older CMB 90's
evo's / purple head / no longer available piston and sleeves ? Can a newer model CMB or other liner be cut to fit the older case ?
I have some older motors that need work....

 

[Alan Elzer]

I have a bunch of old cmb 67 parts. cranks complete, lots of just rods, cases, head buttons single & double plug, cooling jackets, few p/s all new stuff
Also have a complete 67 engine (needs rebuilt)