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Italian original design from the 70's "Skuai mono", very fast with an OS 46 VRM fully ported and worked. This model has been owned by me for nearly 20 years with various hardware, engine changes and paint jobs. Professionally built and painted in two pack enamel, comes with spare OS 46VRM...

Aeromarine SprintCat with CMB Evo 1.0. This model has only recently been built with only 1 hour on it. No expense has been spared with only the best hardware used throughout, including a professional paint job in two pack baked enamel. Comes with the latest Futaba digital wheel radio and...

I'm still trying to get this motor to rev a little harder, have tried pipe length (unsilenced CMB pipe) in the range of 12 1/4-13 inches. Can those who are running this motor let me know what pipe length has worked best for them?

The CMB1.0 in the SprintCat has been running well (about 60mph) but now I'm wanting more out of it. Seems to me these motors are a bit on the lazy side, perhaps they are not meant to do big revs. Anyway, I've tried various props and pipe settings, and these are as optimised as they can be. So...

I am contemplating fitting a bellcrank and lever system to the standard CMB remote needle assembly. As far as I can see the only limitation might be not enough throw available to make enough difference to mixture setting. ie these needles can move as much as 1/2 a turn without making a lot of...

I've noticed after a very hard run my CMB gets only luke warm - at a guess about 50 deg C. Am I likely to get more boat speed if I restrict the water cooling?

This is way off topic but I wanted to share this with you.. I have recently published a book describing succinct ways to step into greater potential and experience more out of life. This book is for anyone and everyone to get more of everything - including health, money and freedom. Please...

I am curious as to what you guys find works best. I've been mainly running mine level - it's an Aeromarine 90 Cat - but have been told some negative angle will improve speed by lifting the nose up. And when I say negative angle I'm referring to the prop being lifted higher, not lowered. Is...

My CMB1.0 has been running well lately but I am now wanting to optimise its performance. Can anyone recommend an ideal plug for this motor? I'm currently using 50% nitro but will move to 60% soon. Also I've noticed some material appear on the plugs after a few hard runs. Looks like carbon...

I posted recently regarding tuning issues with my new CMB1.0 / SprintCat. No matter what the needle setting is, the boat just launches and dies. See -> PAST THREAD After spendng time at the local boat club it seems the issue is fuel delivery ie placement of the fuel tank and remote needle...

Yesterday had my maiden voyage with the CMB1.0 SprintCat. All went well apart from some tuning difficulties. Building took longer than planned but I ended up with an awesome paint job by a professional auto painter in 2 pack polyurethane, will post pics later. This is my first time owning a...

Guys I am wanting to venture into top competition 21 mono territory soon and want to canvass your opinions please on these two boats: Seaducer 20 SD3; and Hopf Modelltechniks Mosquito What in your advice is the quickest out of these two hulls? I recently saw a Seaducer and was very impressed...

Just wondering if any of you guys are in the know when the new CMB 21 Valvola Marine Direct Drive Engine becomes available. Have a friend chasing one and doesn't want the gear drive reverse direction version.

Curious to know what % of nitro people are running with what size motor. Reason I ask is I rarely venture past 40% with my 45 or 90's and wonder what advantage there is in going higher.

I am putting the last touches to the SprintCat/1.0CMB which should be in the water real soon. I've used a square drive set-up so the aft end of the flex shaft ends with a ferrule and the stuffing tube doesn't physically connect to the strut. Now I've been told this is the way they are set-up -...

I want to install the stuffing into the bottom of the Aeromarine SprintCat with maximum strength, especially as I am running a square drive set-up and the aft end of the stuffing tube will be unsupported. I don't know if the Aeromarine SprintCat is made of epoxy or polyester resin. Do any of...

I searched this forum and there are lots of threads on pipe lengths for a CMB90 but no mention for a CMB1.0. Does anyone out there know if the same length is suggested ie start at 12.5 inches and work back or should it be a little longer?

Gents. I'm progressing the build of a 90 SprintCat with CMB 1.0 and just need a few points clarified if someone can help: Floatation wise I can't see this thing staying afloat if it takes a dunk. In the past I've found 2 part foam mixes heavy, messy, not neat in apearance and likely to soak...

Gents can anyone tell me what the recommended degrees of throw should be required for a rudder on a 90 Sprint Cat. Reason I ask is this is the first model I've built with outrigger rudder gear and I notice that the rudder pushrod is binding up in the full left and full right position - not...

Just bought Futaba's Mega Tech 3PK FM radio and HPS type receiver, my first go with a wheelset-up. Hope that doesn't take too long to get used to. Quite a nice unit .. More features than most would ever need! What digital servos are you guys running? Anything to avoid?