Nova Rossi .21 Keep DD or M
- Thread starter KenBeller
- Start date
Help Support Intlwaters:
Marty Davis
Well-Known Member
- Joined
- Sep 25, 2004
- Messages
- 2,445
I now run the DD as I like to have a full length straight pipe. The DD and the wrap arounds run similarly in performance. The negative for the DD is that there are 4 bearings to replace which is a little expensive. For me that was not a problem. I initially thought that having 4 bearings might limit performance. That is not the case as the performance is really good. It doesn't take much to make the engine perform really well. Set the head clearance to .006"-.,007", run 60-65% fuel and you will run very well. Pipe is an important part of the performance. There are several pipes that are really good.
I have run the wrap around engines for years also, and until Andy Brown came out with the MAC I was running the wrap arounds. It is just cleaner for me to have a straight pipe engine.
Hope this helps.........
I have run the wrap around engines for years also, and until Andy Brown came out with the MAC I was running the wrap arounds. It is just cleaner for me to have a straight pipe engine.
Hope this helps.........
Last edited by a moderator:
- Joined
- Apr 20, 2011
- Messages
- 2,073
Hi Ken,
After many years off from running boats I started back with a .21 and .46 riggers, I never ran .21's in the past. I started with the wrap around .21 NR's and .46DD's. I liked the .46DD's so well I sold the wrap around .21's and bought the .21DD's and really like them. Ditto to what Marty said.
Thanks, John
After many years off from running boats I started back with a .21 and .46 riggers, I never ran .21's in the past. I started with the wrap around .21 NR's and .46DD's. I liked the .46DD's so well I sold the wrap around .21's and bought the .21DD's and really like them. Ditto to what Marty said.
Thanks, John
Marty Davis
Well-Known Member
- Joined
- Sep 25, 2004
- Messages
- 2,445
One of my closest racing buddies uses a 46 NR wrap around and it is awesome. I really don't know a lot about the 46DD. I have seen some that are running well, but don't run that class.
stan simpson iv
Well-Known Member
- Joined
- Sep 5, 2011
- Messages
- 1,039
Yes,Rod's NR45 180 ex is in her prime. His driving makes the boat even FASTER.
As far as the 180 ex versus the straight ex...I do not see an advantage in performance in heat racing condition's between the two. We run the NR 180 ex in our JAE and seem's to get the job done. Just need to work on my driving...I love them Offshore bouy's.
Marty Davis
Well-Known Member
- Joined
- Sep 25, 2004
- Messages
- 2,445
Not sure who you are trying to foolYes,Rod's NR45 180 ex is in her prime. His driving makes the boat even FASTER.
As far as the 180 ex versus the straight ex...I do not see an advantage in performance in heat racing condition's between the two. We run the NR 180 ex in our JAE and seem's to get the job done. Just need to work on my driving...I love them Offshore bouy's.
Anyone that can beat Jerry C in a mono is an outstanding driver. I love to watch you give up the start and then pass someone being patient near the end of the race Cool deal....
- Joined
- Jul 9, 2011
- Messages
- 1,787
Ditto Marty, If you are luckey enough to race with Stan you will see that the start begins about 2 laps prior to the start while Stan just wants to see what you are going to do. If Stans over at the start he will catch you!! Great heat racer and he runs clean and very fast> I have a DD , great motor! Tim
Last edited by a moderator:
- Joined
- May 28, 2004
- Messages
- 4,234
Stan
Your right, Off shore bouy's will get you every time.LOL
Your right, Off shore bouy's will get you every time.LOL
stan simpson iv
Well-Known Member
- Joined
- Sep 5, 2011
- Messages
- 1,039
Thx for the comment's on my driving,I have bad day's like everybody else. It is a gamble sometimes...50/50 chance to be a Hero or a Zero.Not sure who you are trying to foolYes,Rod's NR45 180 ex is in her prime. His driving makes the boat even FASTER.
As far as the 180 ex versus the straight ex...I do not see an advantage in performance in heat racing condition's between the two. We run the NR 180 ex in our JAE and seem's to get the job done. Just need to work on my driving...I love them Offshore bouy's.
Anyone that can beat Jerry C in a mono is an outstanding driver. I love to watch you give up the start and then pass someone being patient near the end of the race Cool deal....
Racing Jerry is a Chess match as soon as the clock start's...he keep's you in check no doubt. He is one of my best friends on the shore as a lot of people I have had the pleasure to meet,but once the clock start's "IT IS ON". That is what bring's dad and I back again,again,again. Like Mark Grannis say's at every driver's meeting..."The race is not won in the first turn,race clean side by side for 6 lap's/12 turn's makes for GREAT memories."
- Joined
- Oct 27, 2005
- Messages
- 7,184
Thx for the comment's on my driving,I have bad day's like everybody else. It is a gamble sometimes...50/50 chance to be a Hero or a Zero.Not sure who you are trying to foolYes,Rod's NR45 180 ex is in her prime. His driving makes the boat even FASTER.
As far as the 180 ex versus the straight ex...I do not see an advantage in performance in heat racing condition's between the two. We run the NR 180 ex in our JAE and seem's to get the job done. Just need to work on my driving...I love them Offshore bouy's.
Anyone that can beat Jerry C in a mono is an outstanding driver. I love to watch you give up the start and then pass someone being patient near the end of the race Cool deal....
Racing Jerry is a Chess match as soon as the clock start's...he keep's you in check no doubt. He is one of my best friends on the shore as a lot of people I have had the pleasure to meet,but once the clock start's "IT IS ON". That is what bring's dad and I back again,again,again. Like Mark Grannis say's at every driver's meeting..."The race is not won in the first turn,race clean side by side for 6 lap's/12 turn's makes for GREAT memories."
Thats A great saying , Need to use that at our next driver meeting !Thx for the comment's on my driving,I have bad day's like everybody else. It is a gamble sometimes...50/50 chance to be a Hero or a Zero.Not sure who you are trying to foolYes,Rod's NR45 180 ex is in her prime. His driving makes the boat even FASTER.
As far as the 180 ex versus the straight ex...I do not see an advantage in performance in heat racing condition's between the two. We run the NR 180 ex in our JAE and seem's to get the job done. Just need to work on my driving...I love them Offshore bouy's.
Anyone that can beat Jerry C in a mono is an outstanding driver. I love to watch you give up the start and then pass someone being patient near the end of the race Cool deal....
Racing Jerry is a Chess match as soon as the clock start's...he keep's you in check no doubt. He is one of my best friends on the shore as a lot of people I have had the pleasure to meet,but once the clock start's "IT IS ON". That is what bring's dad and I back again,again,again. Like Mark Grannis say's at every driver's meeting..."The race is not won in the first turn,race clean side by side for 6 lap's/12 turn's makes for GREAT memories."
stan simpson iv
Well-Known Member
- Joined
- Sep 5, 2011
- Messages
- 1,039
We prefer the 180 ex because you can try things with the back plate. On our control line speed planes,the motors that we have played with we learned a lot with back plate mods. Not just curved holes/plates, but things that help atomize the fuel going thru the case. We are just starting to try some of these things on our 21.
Last edited by a moderator:
- Joined
- Apr 20, 2011
- Messages
- 2,073
That wood be the guy in Iowa - what's his name??? Oh ya Steve Wood
Samuel Hagan JR
Well-Known Member
- Joined
- Jul 18, 2010
- Messages
- 4,568
Adam Blevins also does good engine work.
- Joined
- May 11, 2009
- Messages
- 953
Check him out at AB Mods on Facebook. Very good with NR's!
- Joined
- Sep 18, 2008
- Messages
- 549
Yes he dose, And has a dyno.
Adam Blevins
Well-Known Member
- Joined
- Aug 8, 2006
- Messages
- 162
If any of you need engine work just lmk I would be glad to take care of you.
Also... No worries on turn around times as i get things done quickly!
Also... No worries on turn around times as i get things done quickly!
Similar threads
