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What if any are the rules for cutting vents in cowling and exit vents in rear of hull to extract heat in a Gas Scale. It"s a 7707 hull, Mark and Pack.
rules for venting a gas scale
- Thread starter Garrett Braida
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There are no specific rules addressing that other then in the IMPBA rule book it states that they don’t want to see any part of the engine, carb or exhaust looking in from the outside with the exception of the very tip of the exhaust exiting the boat. (not word for word like that but….)
Some people have taken that to the extreme so it will really depend on where you run. Your best bet would be to contact either the Scale Director or if there isn’t one the District Director in your area and ask him directly what he will and will not allow. I’m the Scale Director in Dist 5 for IMPBA and I know that there are guys in other Districts that disagree with my thoughts and opinions on this very topic, and that’s ok. That’s why I strongly suggest you seek out the advice of the guys you plan to run with so your not forced to change things on your boat in order to race it.
Some people have taken that to the extreme so it will really depend on where you run. Your best bet would be to contact either the Scale Director or if there isn’t one the District Director in your area and ask him directly what he will and will not allow. I’m the Scale Director in Dist 5 for IMPBA and I know that there are guys in other Districts that disagree with my thoughts and opinions on this very topic, and that’s ok. That’s why I strongly suggest you seek out the advice of the guys you plan to run with so your not forced to change things on your boat in order to race it.
LohringMiller
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Some pictures of my gas scale. It was driven to third place at the 2021 NAMBA Nationals and still holds the NAMBA 2 lap record driven by Kelly Groul. Lots of people would argue that the motor isn't covered enough, But the NAMBA CD's were fine with it.
Lohring Miller
Lohring Miller
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That’s a great example of how opinions can vary Lohring. I would not have an issue with your boat either but there are some that would completely disagree with me on that.
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Not that I’m a director or anything but I’m with Chris, I’d say you’ve more than made an effort to cover the motor. Good advice to check with your district scale director.
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I have an offshore boat that I bought from Chris a while back,, although not a "Scale" per se, Chris did an excellent job of putting vents in the deck to ventilate the heat of the engine and pipe...
He backed up the slots with a dark colored screen which adds to the overall effect of the vents. I think that some dark screen could also be used the same way on a scale
to shadow an opening..
I would think that some leeway needs to be given for the gas scales.. done properly, it in no way detracts from the overall look of the hull.
He backed up the slots with a dark colored screen which adds to the overall effect of the vents. I think that some dark screen could also be used the same way on a scale
to shadow an opening..
I would think that some leeway needs to be given for the gas scales.. done properly, it in no way detracts from the overall look of the hull.
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Agreed unless of course we start building 1/5 or even 1/4 scale hulls in order to completely hide the motor. If you’ve ever gone out in a retrieve boat after a 1/667 scale, you know how heavy these things are once they are filled with water, and the difficulty in lifting them in using nothing but your back muscles. It probably makes more sense to tow them in. And with anything bigger, you’d probably have to tow them. Yeah, I think within reason, we should probably be a little more flexible with the large scales. I’m not saying re-write the scale rules to a large extent , but all involved in this hobby need to think about encouraging participants vs discouraging them. If the boat otherwise meets the requirements, maybe let something like this slide.
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Just think Rich,,,
if they keep building them bigger and bigger, one day you will be able climb on one and driv....oh wait..
if they keep building them bigger and bigger, one day you will be able climb on one and driv....oh wait..
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I remember in an old Boat Modeler MAGAZINE, some guy built a Budweiser around 1/4 scale. It was between 7 and 8 feet long and powered by a snow mobile engine. Imagine losing radio with that thing.
I think my time to climb into one of these things has probably expired, but never say never. Speaking of drivers, Cincinnati had a race this weekend and people were there from all around, including Al Hobbs, Phil Thomas, Terry Keeley, and none other than actual Hydroplane Driver Mark Evans, who was racing in the T Boat class and maybe another one or two classes I don’t remember. . There were MANY IW folks there. I didn’t race as I have a hand injury still healing up but I contributed as scorekeeper. Yesterday was great weather and we got in 75 heats of racing. Today, thunderstorms all day pretty much took care of day 2.
I think my time to climb into one of these things has probably expired, but never say never. Speaking of drivers, Cincinnati had a race this weekend and people were there from all around, including Al Hobbs, Phil Thomas, Terry Keeley, and none other than actual Hydroplane Driver Mark Evans, who was racing in the T Boat class and maybe another one or two classes I don’t remember. . There were MANY IW folks there. I didn’t race as I have a hand injury still healing up but I contributed as scorekeeper. Yesterday was great weather and we got in 75 heats of racing. Today, thunderstorms all day pretty much took care of day 2.
Hydro Junkie
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Mark's a racer, plain and simple. It doesn't really matter what size the boat is either. Then again, it's become kind of a tradition for him and Mitch to come to the last day of the R/C U Gold Cup and hand out the trophies since the race is in Chelan, their hometown. Those two guys, along with Jimmy Shane and Jeff Bernard, you can't help but like.
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Yeah met Jimmy and Jeff at Madison. They seemed like real down to earth guys.
Hydro Junkie
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Met Jimmy one day at the HARM, talked with him for almost an hour. Last time I saw him, was at a boat race at the same location the NWSC will be at this weekend. Got a bit of a surprise when he walked up to me to say "Hello". With his wife and son there and being there to pick up a boat, it was a real surprise.
As for Jeff, met him at work, of all places. He came into my work area to do some recertification testing, ended up talking boats for almost an hour before he got to actually start. Funny part was, the whole conversation started when I commented that he had the same name as an unlimited hydroplane driver, not having met him before. They are both great guys and have no problem with talking about the boats
As for Jeff, met him at work, of all places. He came into my work area to do some recertification testing, ended up talking boats for almost an hour before he got to actually start. Funny part was, the whole conversation started when I commented that he had the same name as an unlimited hydroplane driver, not having met him before. They are both great guys and have no problem with talking about the boats
