|
Thanks
|
New Engine
S21P5XLT/19 - NOVAROSSI WORLD |
That makes sense now as to why I was seeing the P5XLT pipe combo going for so cheap! I should have bought the combo back then. Here is an article from RedRC Novarossi S21P5XLT/19 3.5cc nitro off-road engine http://www.redrc.net/wp-content/uplo...P5XL2019-1.jpg Novarossi have updated their popular P5 engine with the 2019 variant S21P5XLT/19 featuring a 14.5mm crankshaft with silicone filling as well as a 26mm bearing. Other features include a composite 3-needle carburettor, 5-port sleeve as well as the R7 lightweight aluminium conrod. The long stroke engine also sports a new cooling head design and it is available now. Specifications: – Displacement: 3.49cc – R.P.M.: 34.000RPM – Bore x stroke: 16.26×16.80mm – Sleeve: 5 ports – Rear ball bearings: steel – Front ball bearings: steel – Crankshaft: 14.5mm – turbo – with silicone insert – Carburettor: plastic – 9mm – reverse – Glow plug: Turbo (CTO6) – Exhaust position: rear – Starting: standard – Weight: 375g – Fuel type: 25% nitro http://www.redrc.net/wp-content/uplo...P5XL2019-2.jpg Source: Novarossi [novarossi.it] |
|
Some drilled holes through the ribs is only saving a view grams, nothing important. To me the looks is less important than the performance, you can always mount an onroad head or something else smaller when it is cold outside but in hot conditions I will choose this head above the small low profile OS heads.
|
Originally Posted by Roelof
(Post 15409835)
Some drilled holes through the ribs is only saving a view grams, nothing important. To me the looks is less important than the performance, you can always mount an on road head or something else smaller when it is cold outside but in hot conditions I will choose this head above the small low profile OS heads.
I did machine an OS Head to fit my P5XLT two years ago... https://cimg6.ibsrv.net/gimg/www.rct...c5fc7441b1.jpg |
Not sure why this is even a press release???? I love Nova engines, but wish they would concentrate on a race program and not a club race or basher program for off-road. They need to come out with an engine to compete with REDS, OS. I have tried my buddies Mephesto but even it is soft on the bottom. Great Top but that's about it. The Rolling has been my go to engine for awhile, even have had them modded by AMR. However one weekend running a Spec II style OS engine, has me rethinking my whole race engine plan due to the power, easy to drive and power out of the hole hence this game me better results and high consistency. The numbers really don't lie
|
Originally Posted by 1/8 IC Fan
(Post 15409840)
I don't know, its just a shame that they did not put a little more updating to the Head, They could have used the Head from the Bloody or Loco - Live Range motors. Anodized Purple and re-engraved with the P5XLT logos.
I did machine an OS Head to fit my P5XLT two years ago... https://cimg6.ibsrv.net/gimg/www.rct...c5fc7441b1.jpg |
Drilling holes increases surface area, and upwards/cross flow of the cooling head. Its not the weight that is the main benefit of newer drilled out designs in my opinion. The low CG heads Like FX and OS motors have now combine cross drilling with lower larger fins to get the best of both worlds. Hopefully Nova gets on board soon, people are noticing.
|
Yes, it will mess up the airflow by creating vortexes and will not give a better cooling. But peope are sensitive for the lightweight explenation while that doen't do a noticeable thing. I have seen engines with low placed heads and magnesium heads struggllin in hot weather conditions because they do not cool enough so such a old style head may not be fancy but for sure it works.
|
Kyle mcbride was using the big silver karma head(it has 10 fins instead or 8 or 9 like most novas) in hot weather. I wish a few of the other novas came with that style head as its just a little taller than the lowpro nova heads as its flatter ontop and doesnt have the slight cone shape of the top fins.
Nova put the lowpro head on the p5 black edition that came with a pipe for under 200. is the new motor using a new headbutton as the manual sheet for it says its running .80 worth or shins? Seems like allot |
On the paloma motor I am running 7mm insert. Can I completely remove the insert and run without it? Any benefits?
|
Originally Posted by Niz55
(Post 15410470)
On the paloma motor I am running 7mm insert. Can I completely remove the insert and run without it? Any benefits?
|
Originally Posted by Roelof
(Post 15409913)
Nice work. Calculate the weight of 1 hole you have drilled and calculate the total weight saving. the savings will not be more than 3 up to 5 gram, pinuts.....
|
Originally Posted by Roelof
(Post 15409835)
Some drilled holes through the ribs is only saving a view grams, nothing important. To me the looks is less important than the performance, you can always mount an onroad head or something else smaller when it is cold outside but in hot conditions I will choose this head above the small low profile OS heads.
I know I've measured before and after, but can't find any notes on it now. I do believe it ran slightly cooler as well, but my memory fails to remember any specific numbers. |
This 2019 version of the P5XLT carburetor is the same as the MEPHISTO OFF. And that's good
I think a cooling head type rolling engine would be better, but I'm not an engineer. Crankshaft 14.5mm I think that is what now all the newer NOVAROSSI engines. I think these new developments have given better fuel consumption compared to previous editions of P5XLT. |
Originally Posted by Roelof
(Post 15410478)
Depends the whole bore of the carburator. If that is also 7mm then there will be no gain.
|
Originally Posted by Niz55
(Post 15410623)
The whole bore is close to 12mm.
I know the onroad carburators have a 9mm hole on the slide so a 9mm insert or no insert does not make a difference |
Yes. 11.67mm to be exact.
Thanks |
Weird, you did meassure on the end? There the bore is wider but if it is almost 12mm at te slide as well then yes, there is room to use an onroad ventury or none.
|
So I made the hole on one of the carb inserts to 9mm. I ran the car and it had no low end.
I took another insert and made it to 7.5mm. let me tell you this motor is amazing. I have about 13 tanks through it and started tuning it. Constantly at 220-230 in the parking lot doing high speed runs and never goes above it. The motor is an animal. For $170 you cant beat it. |
Originally Posted by Niz55
(Post 15410782)
So I made the hole on one of the carb inserts to 9mm. I ran the car and it had no low end.
I took another insert and made it to 7.5mm. let me tell you this motor is amazing. I have about 13 tanks through it and started tuning it. Constantly at 220-230 in the parking lot doing high speed runs and never goes above it. The motor is an animal. For $170 you cant beat it. What engine? |
Anyone running the Mantra? What run times are you getting? I just picked up a factory mantra and about to start break in |
Originally Posted by roblupo
(Post 15409897)
Not sure why this is even a press release???? I love Nova engines, but wish they would concentrate on a race program and not a club race or basher program for off-road. They need to come out with an engine to compete with REDS, OS. I have tried my buddies Mephesto but even it is soft on the bottom. Great Top but that's about it. The Rolling has been my go to engine for awhile, even have had them modded by AMR. However one weekend running a Spec II style OS engine, has me rethinking my whole race engine plan due to the power, easy to drive and power out of the hole hence this game me better results and high consistency. The numbers really don't lie
Hi! I have also tested the Spec !! engine and did not like it at all. It is a lightswitch. No good for me. What pipe and manifold/pipe is your friend using on the Mephisto? All long curved (180 degree manifolds) makes engines very smooth on the bottom end. If it is very slippery, i go to 41021 manifold-but i very rarly use it any more. Test the Mephisto with 41001 or 41005 manifolds and it will kick the engine alive. On my Mantra i used 41005/2096 and it was just a tick down on the B2101 at max rpm in noise, but i had the same speed. I too love Nova engines and have imported and sold them here in Norway. I belive the Mephisto is a great engnie, just have to find the right pipe/manifold combo. |
Has anyone measured the Mephisto crank? Curious if it's different from Mantra.
|
Originally Posted by NitroVein
(Post 15410977)
Has anyone measured the Mephisto crank? Curious if it's different from Mantra.
pics from Novarossi: Mantra: https://cimg4.ibsrv.net/gimg/www.rct...f8fed27278.jpg Mephisto: https://cimg6.ibsrv.net/gimg/www.rct...bf40aa676a.jpg |
Think i read a post by amr engines on facebook that said the mephisto crank has the same timing numbers as the 2102 crank
|
Originally Posted by 1/8 IC Fan
(Post 15410978)
Timing or dimensions?
pics from Novarossi: Mantra: https://cimg4.ibsrv.net/gimg/www.rct...f8fed27278.jpg Mephisto: https://cimg6.ibsrv.net/gimg/www.rct...bf40aa676a.jpg |
Originally Posted by HaulinBass
(Post 15410982)
Think i read a post by amr engines on facebook that said the mephisto crank has the same timing numbers as the 2102 crank
|
AMR wrote it has timing like b2101. B2102 is not timed the same as a b2101. I have messuered both 2101 and 2102.
|
Has anyone purchased the bonito engine from eBay seller in italy? They have it for $180 shipped.
I want to get a another Nova motor just to have a back up. Thanks |
Originally Posted by Niz55
(Post 15411368)
Has anyone purchased the bonito engine from eBay seller in italy? They have it for $180 shipped.
I want to get a another Nova motor just to have a back up. Thanks if that has changed then nice.. |
kgombe, what motor will you be running at the barn race?
|
Originally Posted by Niz55
(Post 15411368)
Has anyone purchased the bonito engine from eBay seller in italy? They have it for $180 shipped.
I want to get a another Nova motor just to have a back up. Thanks |
Originally Posted by HaulinBass
(Post 15411399)
kgombe, what motor will you be running at the barn race?
haven't made up my mind yet... |
Guys,
My pamola engine is crazy fast. I bored out the 7mm carb to 7.5 and removed the copper shim under the head and using nova plug 6 ( same one that came with it). 9886/41001. It is absolutely insane of a motor. I have mp9 and switched the clutch Bel to 14 tooth using 30% Byron and it has crazy amount of high end and tons of low end. Really really impressive motor for $169. |
Originally Posted by kgombe
(Post 15411373)
I looked at them a few weeks back, and the engines weren't brand new engines, so i didn't even bother.. they had some new ones listed but they had Shipping attached to them..
if that has changed then nice.. Yes I saw the one that was reconditioned but they also have new ones for $180. Also, on the listing it says .21-7XLB/A and in the picture on the head it says .21-7XL Anyone know if they are different? https://cimg0.ibsrv.net/gimg/www.rct...392299291b.png |
Originally Posted by Niz55
(Post 15411368)
Has anyone purchased the bonito engine from eBay seller in italy? They have it for $180 shipped.
I want to get a another Nova motor just to have a back up. Thanks .21 Off-Road I usually try and buy from the Hobby Shops themselves, but you cannot compare the prices here. Unfortunately they want gold for shipping. So take that into account as well. If at the end of the day let's say it is a $20 difference or around in comparison to the hobby shop, I'll buy from the hobby shop in order to give them business. |
Originally Posted by Niz55
(Post 15411500)
Yes I saw the one that was reconditioned but they also have new ones for $180.
Also, on the listing it says .21-7XLB/A and in the picture on the head it says .21-7XL Anyone know if they are different? https://cimg0.ibsrv.net/gimg/www.rct...392299291b.png |
Novarossi Virtus
Anyone can give some info for the novarossi virtus?
|
| All times are GMT -7. It is currently 11:38 AM. |
Powered By: vBulletin v3.9.3.9 Patch Level 3
Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.