Old guys with 12As club meeting
06-17-16, 11:00 AM
That's not politics Crit, that's bloviating.
But you still have a point, we do have a tradition of very high level posting on the OGTA thread and of course we never bloviate.
I will make a special effort to clean up my act.
But you still have a point, we do have a tradition of very high level posting on the OGTA thread and of course we never bloviate.
I will make a special effort to clean up my act.
06-28-16, 11:52 PM
just not fuel injected tho. at least not yet anyway.
06-29-16, 06:01 PM
Rotary Enthusiast
I was actually thinking "hey I've got the week off why not go to my first OGTA meet!?! Then my girlfriend reminded me I have a doctors appointment Tuesday.. $@&!#%£€¥^%# ing anyway!! Argh me Maties!!! Guys I was so looking forward to coming. Honestly. Even was going to bring my gorgeous survivor with the fuel injection just to **** off the PC Nikki weber crowd!! But alas,.. I can't make it yet again. Would somebody do a Saturday some time??
06-29-16, 06:05 PM
Rotary Enthusiast
07-04-16, 10:27 AM
think i'll take a stab at a rotary powered boat, kinda lost interest in the car scene after working on everyone else's cars for decades. i don't even have much interest in working on my own rx7 anymore, which really doesn't even need much more to be done. the only reason i hold onto it is because i don't want to sell it semi unfinished.
1987 wellcraft nova iii, 28', lots of room for two rotary engines. got it for next to nothing, though the starboard small block 350 was gone and the alpha 1 drive had been taken apart and loosely put back together.
pics can be decieving, it isn't a small boat. it's longer than the diesel pusher motorhome it's parked next to.
1987 wellcraft nova iii, 28', lots of room for two rotary engines. got it for next to nothing, though the starboard small block 350 was gone and the alpha 1 drive had been taken apart and loosely put back together.
pics can be decieving, it isn't a small boat. it's longer than the diesel pusher motorhome it's parked next to.
Last edited by RotaryEvolution; 07-04-16 at 10:40 AM.
07-04-16, 10:38 AM
Rotary Enthusiast
think i'll take a stab at a rotary powered boat, kinda lost interest in the car scene after working on everyone else's cars for decades.
1987 wellcraft nova iii, 28', lots of room for two rotary engines. got it for next to nothing, though it was missing one engine.
1987 wellcraft nova iii, 28', lots of room for two rotary engines. got it for next to nothing, though it was missing one engine.
07-04-16, 10:44 AM
Well at least your fingers are still in the rotors even if they do get wet! Think it's a great idea. Shoving the throttles fast forward should be very different than an inboard v-8 or any big outboard rudes or mercs. I think you're gonna like it a lot. Hope you twist the props right off it first time.
i don't want to start with turbo engines, but i'd probably shift in that direction once the issues get worked out.
Last edited by RotaryEvolution; 07-04-16 at 10:56 AM.
07-04-16, 03:21 PM
I got this pm from John, the new guy from New Zealand with the crazy red RX-3:
"I tried to write on the ogta post but it still wont let me. I wanted to ask the group if anyone has some original 79-80 rx7 front struts and springs. Got another rx3 a few weeks ago and am getting it ready now."
If anyone can help him out he is John_peachRX3 on the forum and he may be at the meeting tomorrow.
"I tried to write on the ogta post but it still wont let me. I wanted to ask the group if anyone has some original 79-80 rx7 front struts and springs. Got another rx3 a few weeks ago and am getting it ready now."
If anyone can help him out he is John_peachRX3 on the forum and he may be at the meeting tomorrow.
07-04-16, 07:41 PM
Rotary Enthusiast
that's kinda what i worry about, the alpha 1 drives aren't cheap and i'm not quite sure they can handle 9-10k RPMs versus the old ~5k from the boinger even if i regeared it with a higher ratio for something like a 4 cylinder engine. a reduction unit i think is going to have to go in.
i don't want to start with turbo engines, but i'd probably shift in that direction once the issues get worked out.
i don't want to start with turbo engines, but i'd probably shift in that direction once the issues get worked out.
07-04-16, 07:50 PM
Well I was kinda joking and yet not joking at all. Overall dynamics of a wankel is kind of scary when considering props. But what the hell, they use them in airplanes so why not a boat?? (Kidding again) good news is if it twists them off you won't fall from the sky.. You'll just need a tow.
i could create my own outdrive shower system, but not sure that would still keep them from burning themselves up.
only way to make a rotary produce decent power at the 5k range would be a governor and turbos. not sure im a fan of the idea of running salt water through the turbos, so either that's out for now or that would require its own closed loop cooling system. creating a 5k synced rev governor for twin boosted rotary engines already wouldn't be a simple task.
Last edited by RotaryEvolution; 07-04-16 at 08:01 PM.
07-04-16, 08:50 PM
there is this one too:
but this boat weighs about 3 times as much as those, also want it to be reliable enough to do a 200 mile coast run to the keys and back(400 miles total). would be cool to go all out with it but for now i think i want to just keep it naturally aspirated and work out the math.
with the twin 350's pushing 270 crank hp a piece(rated by the mfr, probably less than that in actuality) the boat had a top speed of 50mph and has a 150 gallon tank.
i could build PP engines that push the same horsepower as the original 350's but it would be at almost exactly twice the RPMs, so a 2:1 reduction unit for each engine is necessary and all should be well with the world. perhaps a simple transfer case or airplane gear reduction unit would work here.
the only issue i have with the above is: my ears would be bleeding too much to enjoy the vacation.
but this boat weighs about 3 times as much as those, also want it to be reliable enough to do a 200 mile coast run to the keys and back(400 miles total). would be cool to go all out with it but for now i think i want to just keep it naturally aspirated and work out the math.
with the twin 350's pushing 270 crank hp a piece(rated by the mfr, probably less than that in actuality) the boat had a top speed of 50mph and has a 150 gallon tank.
i could build PP engines that push the same horsepower as the original 350's but it would be at almost exactly twice the RPMs, so a 2:1 reduction unit for each engine is necessary and all should be well with the world. perhaps a simple transfer case or airplane gear reduction unit would work here.
the only issue i have with the above is: my ears would be bleeding too much to enjoy the vacation.
Last edited by RotaryEvolution; 07-04-16 at 09:12 PM.
07-05-16, 09:43 AM
Rotary Enthusiast
there is this one too:
Peter Huijs' PPRE 4 rotor sprint boat - YouTube
but this boat weighs about 3 times as much as those, also want it to be reliable enough to do a 200 mile coast run to the keys and back(400 miles total). would be cool to go all out with it but for now i think i want to just keep it naturally aspirated and work out the math.
with the twin 350's pushing 270 crank hp a piece(rated by the mfr, probably less than that in actuality) the boat had a top speed of 50mph and has a 150 gallon tank.
i could build PP engines that push the same horsepower as the original 350's but it would be at almost exactly twice the RPMs, so a 2:1 reduction unit for each engine is necessary and all should be well with the world. perhaps a simple transfer case or airplane gear reduction unit would work here.
the only issue i have with the above is: my ears would be bleeding too much to enjoy the vacation.
Peter Huijs' PPRE 4 rotor sprint boat - YouTube
but this boat weighs about 3 times as much as those, also want it to be reliable enough to do a 200 mile coast run to the keys and back(400 miles total). would be cool to go all out with it but for now i think i want to just keep it naturally aspirated and work out the math.
with the twin 350's pushing 270 crank hp a piece(rated by the mfr, probably less than that in actuality) the boat had a top speed of 50mph and has a 150 gallon tank.
i could build PP engines that push the same horsepower as the original 350's but it would be at almost exactly twice the RPMs, so a 2:1 reduction unit for each engine is necessary and all should be well with the world. perhaps a simple transfer case or airplane gear reduction unit would work here.
the only issue i have with the above is: my ears would be bleeding too much to enjoy the vacation.
07-05-16, 09:54 AM
Rotary Enthusiast
Keep a sharp eye out for you matey!!
07-05-16, 10:03 AM
Well THAT made the hair stand up on my legs and arms. Is it me or is there just something special about the "flat out" sound of a well tuned and prepared wankel??! Whatever you must do it'll be a challenge and a special project. Certainly more rewarding than the hundreds of street cars you've honed your skills on. After seeing that old WWII radial fitted in the truck video, earlier in the thread, I'd say anything goes. God Bless Ferdinand and Mazda for getting it right.ive always been a total nonconformist. Do the boat!!! It'll keep you up late at nights. You can sleep when you're dead.!!
hehe
these projects always keep me up at night as i sit and think about the consequences and fixes, such as one way to try and smooth out the exhaust note would be to collect both exhausts before exiting the hull. tuning n/a exhaust can be tricky though even without adding in the variables of matching the power pulse resonance of 2 engines.
Last edited by RotaryEvolution; 07-05-16 at 10:09 AM.
07-05-16, 10:13 AM
Rotary Enthusiast
3 and 4 rotors inline sound purely awesome, i'm not quite sure about 2 twin rotaries working in tandem though, it might just sound like an obnoxious weedeater on steroids. going in and out of phase with one another might just be like a bad dubstep song that never ends, now multiply that by 4+ hours straight.
hehe
these projects always keep me up at night as i sit and think about the consequences and fixes, such as one way to try and smooth out the exhaust sound would be to collect both exhausts before exiting the hull. tuning n/a exhaust can be tricky though.
hehe
these projects always keep me up at night as i sit and think about the consequences and fixes, such as one way to try and smooth out the exhaust sound would be to collect both exhausts before exiting the hull. tuning n/a exhaust can be tricky though.