camaroboy383
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- Feb 25, 2008
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Camaro,
Can you tell me what it was that you did not like about the engines. It might be good to get this from another modelers view.
Always looking to make a better product!
Was it performance, or maybe a specific aspect/s of the engine?
Grim
Futaba
Odonnell
OS Engines
AquaCraft
GrimRacer
VS1
UL-1 Superior
Nemesis
HTV/Aeroslot
Ninja
Futaba Sport 20
Super Sport 45
1963 Miss Bardahl
U-55 Oboy Oberto
FASST.. no data needed.. just RESULTS!
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#22 camaroboy383
National Racer
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25-February 08 Posted Yesterday, 01:01 AM
no problem mike,,,, ...remember this is just my honest opinion,, and nothin but opinion... well my first impression is that there is some unnecesary wieght,,,the cooling cap i think is just way over kill and ads a mint to the overall wieght...the case casting seems a little extra beefy around the exhaust outlet and the larger case fins to add.. so there is some more wieght... i understand you can get a standard back plate,,,which is a nice option for sure... so that will cut some down obviously...
my main peave with these engines is the lacking torque,,, they seem to want the smaller props and almost refuse to perform when loaded up... on the other hand i noticed these engines seem to spin the smaller props faster,,,so it almost evens out...now im speaking as in all around use,,, seems dang fine for a hydro,,,,(which they come in),, but slap it in the sv and it seems to have trouble getting to the pipe with a prop my mod aqua just spun the heck out of.... they just seem more prop picky...... im sure the timing numbers are different from the aqua, along with other factors of course, i.e button, head space.... so i would assume this is where the lack of torque occurs.... keep in mind i never tried any different timing configurations,, or different pipes and headers,,, bone stock the way they come in the duece...
im not a fan of the composite carbs,,,dont get me wrong,,, i know they perform just fine,,, im just not a fan,,(personal preference)...
plus sides------- i was impressed with the internals,,, the sleeve,the rod, the crank,and piston,,, super nice machining,,way nicer than the internals of the aqua...
so it boils down to this,,, my dis-likes are...
1) the wieght
2) the lacking torque
3) the composite carb
again,,, these are just my observations and opinions... and hats off to you mike for putting alot of effort where its needed,,(getting people into the hobby with rtr)....im like bill,,seems i have the most fun with the cheap rtr stuff... the rest of the fleet is just white knuckle racing....
Alden
Alden cost
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#23 Grimracer
World Racer
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27-December 01 Posted Today, 04:57 PM
Ok.. good info..
Best is that you qualified that as your opinion..
Cus to me...
In "testing" the weight is/was a non issue. If one could qualify that the extra weight (say.... Aqua vrs SuperTigre) witch by the way is a difference of 1.4oz on a typical 4 pound boat) dampens the performance that would be good to know. I have not seen this to be an issue. (Proven)
The “Difference” in torque is a setup issue as you know and even if the motor makes good power some just have a hard time propping a boat that way.. You have a valid opinion on that and its well understood.. Thanks. I wish I would have had more time to work on that head button.
Composite carbs got a bad wrap in the past. They have really gotten much better over the last few years. Truth is its really hard to ware out a composite carb.. Overall they just last longer.. Not really an issue with boating but worth noting. To date I have yet to fail the carb on the ST 18.. (fact).
Thanks again and rock and roll the RTR class.
Grim
Futaba
Odonnell
OS Engines
AquaCraft
GrimRacer
VS1
UL-1 Superior
Nemesis
HTV/Aeroslot
Ninja
Futaba Sport 20
Super Sport 45
1963 Miss Bardahl
U-55 Oboy Oberto
FASST.. no data needed.. just RESULTS!
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
well mike i wanted to bring this to a new thread to be respectful of larcor.... i wanted to clarify a couple things....
i understand your point of the 1.04 oz. not being an issue,,, but when it boils down to it i beleive it just makes the engine more bulky large.. maybe somone wants to slap one in a small rigger and possibly that extra wieght makes a diff,, or the overall size of the engine just doesnt allow it to be reasonable application...
now as far as the whole torque thing,,,this is the part i mainly wanted to clarify.... as far as the issue being the set up,, im not so sure i can agree with you on that... i tried every possible strut position,,rudder position,,, corrected the cg for the "heavier" engine...(all fact) im tellin ya that engine will not swing the same props as the mod aquas i have...
i will give you specific examlpes and i hope you could possibly try for your self .... (like i said this was testing in the sv hull) ....
props that i can swing with the mod aqua and gives the greatest speed are as follows,,(keep in mind,,as you know the set up changes per prop)
x440 3 blade,,, this prop swings fairly easily and gives the greatest speed of all this prop has shown me in the 45 mph range,,,does the hull take it no,,, blows off almost every time...fact is the engine will produce good power on this prop my testing with a array of set ups showed me the super tigre would not and absolutely refused to swing that prop
x640 this prop is the one i run faithfully and produces 41-42 mph speeds every pass consistantly... its an absolute good all around prop from a dig to full steam... the super tigre again had issues with this prop,,,and again on an array of different set ups...
these are two specific examples... there are a couple others i had issues with but these stand out the most...
now the composite carbs................ i beleive you that the carbs are hard to wear out...... the breakage error im expressing is human......... im sure they last a long time with just the barrel opening and closing,,,but 9 1/2 out of 10 composite carbs are ruined by human error,,, seen it all to many times.....oops i over tightened the needle assembly,,o.k stripped threads,,toss it....oops i over tightened the pinch bolt and damaged the neck....oh well,,toss it... i think you understand the point im getting at... aluminum is just a little more forgiving thats all im sayin,it kinda lets you know its tight when you thread somthin into it,,and for those who modify carbs for themselves might not like the idea of maching the composite...
i also want you to remember that im comparing the stock super tigre to a modified aqua.,...
alden
Can you tell me what it was that you did not like about the engines. It might be good to get this from another modelers view.
Always looking to make a better product!
Was it performance, or maybe a specific aspect/s of the engine?
Grim
Futaba
Odonnell
OS Engines
AquaCraft
GrimRacer
VS1
UL-1 Superior
Nemesis
HTV/Aeroslot
Ninja
Futaba Sport 20
Super Sport 45
1963 Miss Bardahl
U-55 Oboy Oberto
FASST.. no data needed.. just RESULTS!
Back to top Report
MultiQuote
Reply
--------------------------------------------------------------------------------
#22 camaroboy383
National Racer
Group:
Members Posts:
1,127 Joined:
25-February 08 Posted Yesterday, 01:01 AM
no problem mike,,,, ...remember this is just my honest opinion,, and nothin but opinion... well my first impression is that there is some unnecesary wieght,,,the cooling cap i think is just way over kill and ads a mint to the overall wieght...the case casting seems a little extra beefy around the exhaust outlet and the larger case fins to add.. so there is some more wieght... i understand you can get a standard back plate,,,which is a nice option for sure... so that will cut some down obviously...
my main peave with these engines is the lacking torque,,, they seem to want the smaller props and almost refuse to perform when loaded up... on the other hand i noticed these engines seem to spin the smaller props faster,,,so it almost evens out...now im speaking as in all around use,,, seems dang fine for a hydro,,,,(which they come in),, but slap it in the sv and it seems to have trouble getting to the pipe with a prop my mod aqua just spun the heck out of.... they just seem more prop picky...... im sure the timing numbers are different from the aqua, along with other factors of course, i.e button, head space.... so i would assume this is where the lack of torque occurs.... keep in mind i never tried any different timing configurations,, or different pipes and headers,,, bone stock the way they come in the duece...
im not a fan of the composite carbs,,,dont get me wrong,,, i know they perform just fine,,, im just not a fan,,(personal preference)...
plus sides------- i was impressed with the internals,,, the sleeve,the rod, the crank,and piston,,, super nice machining,,way nicer than the internals of the aqua...
so it boils down to this,,, my dis-likes are...
1) the wieght
2) the lacking torque
3) the composite carb
again,,, these are just my observations and opinions... and hats off to you mike for putting alot of effort where its needed,,(getting people into the hobby with rtr)....im like bill,,seems i have the most fun with the cheap rtr stuff... the rest of the fleet is just white knuckle racing....
Alden
Alden cost
Back to top Report
MultiQuote
Reply Edit
--------------------------------------------------------------------------------
#23 Grimracer
World Racer
Group:
Members Posts:
3,824 Joined:
27-December 01 Posted Today, 04:57 PM
Ok.. good info..
Best is that you qualified that as your opinion..
Cus to me...
In "testing" the weight is/was a non issue. If one could qualify that the extra weight (say.... Aqua vrs SuperTigre) witch by the way is a difference of 1.4oz on a typical 4 pound boat) dampens the performance that would be good to know. I have not seen this to be an issue. (Proven)
The “Difference” in torque is a setup issue as you know and even if the motor makes good power some just have a hard time propping a boat that way.. You have a valid opinion on that and its well understood.. Thanks. I wish I would have had more time to work on that head button.
Composite carbs got a bad wrap in the past. They have really gotten much better over the last few years. Truth is its really hard to ware out a composite carb.. Overall they just last longer.. Not really an issue with boating but worth noting. To date I have yet to fail the carb on the ST 18.. (fact).
Thanks again and rock and roll the RTR class.
Grim
Futaba
Odonnell
OS Engines
AquaCraft
GrimRacer
VS1
UL-1 Superior
Nemesis
HTV/Aeroslot
Ninja
Futaba Sport 20
Super Sport 45
1963 Miss Bardahl
U-55 Oboy Oberto
FASST.. no data needed.. just RESULTS!
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
well mike i wanted to bring this to a new thread to be respectful of larcor.... i wanted to clarify a couple things....
i understand your point of the 1.04 oz. not being an issue,,, but when it boils down to it i beleive it just makes the engine more bulky large.. maybe somone wants to slap one in a small rigger and possibly that extra wieght makes a diff,, or the overall size of the engine just doesnt allow it to be reasonable application...
now as far as the whole torque thing,,,this is the part i mainly wanted to clarify.... as far as the issue being the set up,, im not so sure i can agree with you on that... i tried every possible strut position,,rudder position,,, corrected the cg for the "heavier" engine...(all fact) im tellin ya that engine will not swing the same props as the mod aquas i have...
i will give you specific examlpes and i hope you could possibly try for your self .... (like i said this was testing in the sv hull) ....
props that i can swing with the mod aqua and gives the greatest speed are as follows,,(keep in mind,,as you know the set up changes per prop)
x440 3 blade,,, this prop swings fairly easily and gives the greatest speed of all this prop has shown me in the 45 mph range,,,does the hull take it no,,, blows off almost every time...fact is the engine will produce good power on this prop my testing with a array of set ups showed me the super tigre would not and absolutely refused to swing that prop
x640 this prop is the one i run faithfully and produces 41-42 mph speeds every pass consistantly... its an absolute good all around prop from a dig to full steam... the super tigre again had issues with this prop,,,and again on an array of different set ups...
these are two specific examples... there are a couple others i had issues with but these stand out the most...
now the composite carbs................ i beleive you that the carbs are hard to wear out...... the breakage error im expressing is human......... im sure they last a long time with just the barrel opening and closing,,,but 9 1/2 out of 10 composite carbs are ruined by human error,,, seen it all to many times.....oops i over tightened the needle assembly,,o.k stripped threads,,toss it....oops i over tightened the pinch bolt and damaged the neck....oh well,,toss it... i think you understand the point im getting at... aluminum is just a little more forgiving thats all im sayin,it kinda lets you know its tight when you thread somthin into it,,and for those who modify carbs for themselves might not like the idea of maching the composite...
i also want you to remember that im comparing the stock super tigre to a modified aqua.,...
alden