Displacement Size

[Bob Finn]

Andy,  Did you say "new .105 motor"??????????????? You could run about 11 of them       Is that a hint someones gonna be making a 1.05 soon??

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The new CMB Rs is a 1.01 Probably easy to make a 1.05 by changing pistons and rechroming it.

 

[Tofastformellow]

"quote -I HAVE RUN SOME 100 CMB ENGINES AND I HAVE FOUND THE .67 AND .80 TO BE FASTER TAHN THE ONE INCH "

your inch engine aint runnin to well at all - lol's

jason

 

[BradV]

Changing capacity limits from 1.8 to 2.0 makes no difference to accident probablity. Life just doesn't work like that.

How anyone of sound mind could think that it would, really cracks me up. And if this is the reason for IMPBA refusing to address the issue, then it is backward for this sport.

As to whether a boat with a 1.0 cuber is going to be slower than a 67 or 80/90?

Well edited by moderator it sure is a mystery to me why a boat with a 1.0 engine should be slower than anything smaller. Doesn't make sense.

Perhaps the manufacturers need to pull their thumb out of their arses and put more R&D into it. Or perhaps if IMPBA changed their antiquated rules then there might be more incentive.

Please watch your language :angry:

 

[Buckshot]

Changing capacity limits from 1.8 to 2.0 makes no difference to accident probablity.  Life just doesn't work like that.
How anyone of sound mind could think that it would, really cracks me up.  And if this is the reason for IMPBA refusing to address the issue, then it is backward for this sport.

As to whether a boat with a 1.0 cuber is going to be slower than a 67 or 80/90?

Well f#@k it sure is a mystery to me why a boat with a 1.0 engine should be slower than anything smaller.  Doesn't make sense.

Perhaps the manufacturers need to pull their thumb out of their arses and put more R&D into it.  Or perhaps if IMPBA changed their antiquated rules then there might be more incentive.

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[SIZE=14pt]WORD![/SIZE]

-Buck-

 

[James n TN]

I can tell ya a sad thing that happened to me once running Twins.

back when I was racing pretty regular I had built a twin Sport 40 with 2 Novarossi 21's long strokes. The engines went right in the Thomas Hull in which I had Phil add the center support to install the twins Terry Moore of Boat South actually put the boat together for me. This boat was bad and looked good, then all of the sudden everyone got to complaining it was illegal this and that. This boat fit well within the rules of the IMPBA. Everyone talks about lets improve and change and not get stagnet well Once you see an opening to do something different they will make a rule to not allow twins in a sport 40 such as now and such as the new sport 20 class. Andy Brown will rememebr all this very well as he inspected the hull and everything and deemed it legal to run as a sport 40. They changed the rules as to keep cost down from what I have gathered so the hobby doesn't become who can afford the best. Pretty sad that rules are put in place to keep a person for being unique and actually builds something that not only ran well but sounded good and looked great on the water.

Now I remember why I got burned out and sold all my equipment, thanks for the eye opener. Guess my new twin will just sit in hopes that one day someone is elected in office to see the light and quit holding racers back with innovations.

James

 

[Don Ferrette]

I can tell ya a sad thing that happened to me once running Twins.
back when I was racing pretty regular I had built a twin Sport 40 with 2 Novarossi 21's long strokes. The engines went right in the Thomas Hull in which I had Phil add the center support to install the twins Terry Moore of Boat South actually put the boat together for me. This boat was bad and looked good, then all of the sudden everyone got to complaining it was illegal this and that. This boat fit well within the rules of the IMPBA. Everyone talks about lets improve and change and not get stagnet well Once you see an opening to do something different they will make a rule to not allow twins in a sport 40 such as now and such as the new sport 20 class. Andy Brown will rememebr all this very well as he inspected the hull and everything and deemed it legal to run as a sport 40. They changed the rules as to keep cost down from what I have gathered so the hobby doesn't become who can afford the best. Pretty sad that rules are put in place to keep a person for being unique and actually builds something that not only ran well but sounded good and looked great on the water. 

Now I remember why I got burned out and sold all my equipment, thanks for the eye opener. Guess my new twin will just sit in hopes that one day someone is elected in office to see the light and quit holding racers back with innovations.

James

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Hey James I remember that twin 21 sport 40 & thought is was rather cool & quite innovative (then again I'm a sucker for twins). However, after listening to both sides of that arguement the one that seemed to make the most sense was that is was a "specialty" class & the intent from what I gathered was maintaining the purity of a specialty class. I'm all for "innovation" but before someone starts asking for a new rule it should be looked at as what, if any, benefit would the IMPBA (or any org for that matter) as a whole, not the individual(s) asking, gain from it. Sport 40 is a specialty class & also an affordable class for alot of racers. I've many times heard it referred to as "poor man's scale". As far as this F class displacement thing I'm still waiting for a legitimate reason to do this rather than one or two people saying "I want it that's why". I could care less if I had to race someone with twin cubes. Bigger is not always faster. You want to increase the displacement limit, well that's fine, simply justify it. So far nobody has done that. :unsure:

 

[James n TN]

Don,

I agree on the specialty class of the sport 40 however the class the sport mimicked was also a class in the open water racing as the Unlimited were, and in this class as well there was a twin engine piston powered boat that ran the class. At one time I had all the info and which class the sprt 40s replicate and the pictures of the actual boat with 2 engines in it. That was my winning argument with the board that was trying to outlaw the boat and once I took the break it appears they did do so once i was out of the picture.

I had all my ducks in a row on the design and build of that twin sport 40. Was it pratical? not really it was different. Yes it probably had a couple mph over the singles but no one else was going to ever build one as of the cost of them engines. ya could buy one good 45 for what one of them long strokes cost me.

The whole idea was 2 .21's will produce more hp than a single 45 if working together and also have more rpms so add the hp and RPM's and you have more speed. Would I do it again if it was legal? probably not I just wanted to see if it would work and how well.

James

 

[Preston_Hall]

Twin 270's? I was thinking this. One shaft, one prop, YEH DOG! 110cc - 6.7ci!

 

[Don Ferrette]

Twin 270's? I was thinking this. One shaft, one prop, YEH DOG! 110cc - 6.7ci!

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Better call Mercruiser for your props! :lol:

 

[EatMyShortsRacing]

Hell I have a small block chev motor just waiting to go in an RC Rigger.....

Why have a capacity limit at all??????

-PS- Andy I think the 5/16 shaft may be a little light on for my engine..... and I MAY just struggle to keep it under 25 pounds... but I have these skyhooks that I reckon will solve that problem....

Racers work within the limitation of the rules.... not change them to suit what they can buy.

All the arguments for the increase so far are pretty pathetic. This standard doesnt just affect NAMBA or IMPBA but boating across the world!!! We in Australia largely base our rules on NAMBA and IMPBA and so do many other international bodies. We come over there to race too.... You want the world of model boating to change for a few whingers who want a little more displacement in their engines???? Who do you think you are??? Royalty????

A line in the sand has been drawn. It is a reasonable line.

Sure you can go build your twin 1.00 rigger.... knock yourself out!!! Just dont expect to race it.

sheesh.... give a boater a piece of rope - he thinks he is a cowboy!!!

 

[Brian MAhoney]

Now then Craig tell us what you really think.

Brian

Hell I have a small block chev motor just waiting to go in an RC Rigger.....
Why have a capacity limit at all??????

-PS- Andy I think the 5/16 shaft may be a little light on for my engine.....  and I MAY just struggle to keep it under 25 pounds... but I have these skyhooks that I reckon will solve that problem....

Racers work within the limitation of the rules.... not change them to suit what they can buy.

All the arguments for the increase so far are pretty pathetic.  This standard doesnt just affect NAMBA or IMPBA but boating across the world!!!  We in Australia largely base our rules on NAMBA and IMPBA and so do many other international bodies.  We come over there to race too....  You want the world of model boating to change for a few whingers who want a little more displacement in their engines????  Who do you think you are??? Royalty????

A line in the sand has been drawn.  It is a reasonable line. 

Sure you can go build your twin 1.00 rigger.... knock yourself out!!!  Just dont expect to race it.

sheesh.... give a boater a piece of rope - he thinks he is a cowboy!!!

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[Buckshot]

You want the world of model boating to change for a few whingers who want a little more displacement in their engines????  Who do you think you are??? Royalty????

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Nope, just a man that wants to build and race what I want.

A line in the sand has been drawn.  It is a reasonable line.

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To some but not all. You can never satisfy everyone and I understand that. This thread was not to stir up the s*#t but to see first hand what I'd only heard about this subject.

Sure you can go build your twin 1.00 rigger.... knock yourself out!!!  Just dont expect to race it.

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Why not? Unless someone builds one and gets asked to tear down the motors, who's going to know? If your not cheating your not tring hard enough.

sheesh.... give a boater a piece of rope - he thinks he is a cowboy!!!

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Yea you know how us folks from Texas are. I tow my trailer to the pond with my horses.

William "The Cowboy" Shackelford

 

[dwb2620]

You want the world of model boating to change for a few whingers who want a little more displacement in their engines????  Who do you think you are??? Royalty????

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Nope, just a man that wants to build and race what I want.

A line in the sand has been drawn.  It is a reasonable line.

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To some but not all. You can never satisfy everyone and I understand that. This thread was not to stir up the s*#t but to see first hand what I'd only heard about this subject.

Sure you can go build your twin 1.00 rigger.... knock yourself out!!!  Just dont expect to race it.

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Why not? Unless someone builds one and gets asked to tear down the motors, who's going to know? If your not cheating your not tring hard enough.

sheesh.... give a boater a piece of rope - he thinks he is a cowboy!!!

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Yea you know how us folks from Texas are. I tow my trailer to the pond with my horses.

William "The Cowboy" Shackelford

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Yepper,

Right as we pass by the oil wells in our back yard.

David B.

 

[Don Ferrette]

Why not? Unless someone builds one and gets asked to tear down the motors, who's going to know? If your not cheating your not tring hard enough.

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Wow Buck with a public statement like that that ya better buy LOTS of head bolts for your twin engines 'cause they'll get the threads worn off real quick when they get tech'd at every race. :blink:

Yea you know how us folks from Texas are. I tow my trailer to the pond with my horses.

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That's too funny! :lol: :lol:

 

[Buckshot]

Why not? Unless someone builds one and gets asked to tear down the motors, who's going to know? If your not cheating your not tring hard enough.

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Wow Buck with a public statement like that that ya better buy LOTS of head bolts for your twin engines 'cause they'll get the threads worn off real quick when they get tech'd at every race. :blink:

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I should probably get some titanium head bolts. You know where I can get some? :lol:

I'll just stick with the .84's for now. I'll build a twin 100 errr 90 when everyone forgets about it hahaha

William "Cheater Motor" Shackelford B)

 

[James n TN]

Racers work within the limitation of the rules.... not change them to suit what they can buy.

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The sad thing is back when I was racing I worked within the rules in the Sport 40 class when I built my Twin sport 40 and when it was all and done they changed the rules so no one else can ever build and race a Twin Sport 40, Members belly ached and cryed and moaned about the boat yet it was 100% legal. So whats fair about that? Thing is..... unless you're a well known member thats been around since IMPBA first begun and havethe so called click status if you have something they don't like they just change the rules to make themselves happy and the heck with the guys who were creative within the rules as stated above.

Maybe it's time to look into building a triple engine since rules don't specify no triples wonder what they would say about that?

James

 

[Don Ferrette]

Thing is..... unless you're a well known member thats been around since IMPBA first begun and havethe so called click status if you have something they don't like they just change the rules to make themselves happy and the heck with the guys who were creative within the rules as stated above.

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You don't really believe that do you? :huh:

 

[Piston1]

Buckshot, you can run your Twin 100s in any race advertised as Twin Hydro.

Twin Hydro is a special event. It has nothing to do with F Hydro displacement limitation. All you have to do is keep your boat below 25#s and make sure you run below 95db. Lets talk noise now, my favorite topic.

 

[Don Ferrette]

Buckshot, you can run your Twin 100s in any race advertised as Twin Hydro.Twin Hydro is a special event. It has nothing to do with F Hydro displacement limitation.  All you have to do is keep your boat below 25#s and make sure you run below 95db. 

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What? :blink:

 

[Buckshot]

Buckshot, you can run your Twin 100s in any race advertised as Twin Hydro.Twin Hydro is a special event. It has nothing to do with F Hydro displacement limitation.  All you have to do is keep your boat below 25#s and make sure you run below 95db.  Lets talk noise now, my favorite topic.

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Open Multi-Engine Hydro. Cool.

What about Open Hydro? Would that also be a special event? Some races like the Hydro Invitational(my favorite) offer, among other big engine clases, Open hydro. I guess that is up to the Club or CD?

I'm going to pass on the db deal. People start yell n' louder than the actual boats. :lol:

-Buck-