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R/C Tech Forums (https://www.rctech.net/forum/)
-   Offroad Nitro Engine Forum (https://www.rctech.net/forum/offroad-nitro-engine-forum-157/)
-   -   Is there any new motor designs for the new year?? (https://www.rctech.net/forum/offroad-nitro-engine-forum/466506-there-any-new-motor-designs-new-year.html)

Tony Newland 01-02-2011 06:33 PM
[QUOTE=EBMods;8423960]
Originally Posted by Tony Newland (Post 8423886)
In our boat engines we machine the under side of the sleeve and use shims to fine tune the timing :nod: QUOTE]

So this would allow the Land RC racers the same tuning option :)

I've found that port and runner alignment, sleeve and case seal, and sleeve vibration is a side effect when using a sleeve shim.
Yes, the shims end up very small and fragile but seem to work ok. We've used them for years. Of course its only to find the best timing, then the case and sleeve are worked over for permanent fit.

Remember that little .18 hydro I ran this summer? It won every 'A' Hydro heat this summer lol :lol: a little .18 RTR engine woopin the $500+ .21's. That was a good time :nod: Proves with some testing and careful tuning anything can run well.

EBMods 01-04-2011 05:24 AM
[QUOTE=Tony Newland;8425398]
Originally Posted by EBMods (Post 8423960)
Remember that little .18 hydro I ran this summer? It won every 'A' Hydro heat this summer lol :lol: a little .18 RTR engine woopin the $500+ .21's. That was a good time :nod: Proves with some testing and careful tuning anything can run well.
That's awesome to hear Tony! Give me a call today 570-779-0646 I'll be in the shop until 5pm est today.

Tony Newland 01-04-2011 10:15 AM
sure will

EBMods 01-04-2011 10:22 AM
Originally Posted by Tony Newland (Post 8434374)
sure will
Just before 5pm EST, not 5pm your time :)

sly6t 01-04-2011 03:33 PM
going back a few pages the rc RPMs are really not that much higher than KART engines that run case's , barrel's and then a head on top ... the old MAC chainsaw engines use to be REV'd to above 30K .. and a good reed or rotary these days will go to 25k soo .. kart engines are just a lil bigger version and every thing is water cooler'd now ...

wingracer 01-04-2011 11:48 PM
Originally Posted by sly6t (Post 8435725)
going back a few pages the rc RPMs are really not that much higher than KART engines that run case's , barrel's and then a head on top ... the old MAC chainsaw engines use to be REV'd to above 30K .. and a good reed or rotary these days will go to 25k soo .. kart engines are just a lil bigger version and every thing is water cooler'd now ...
It's been a long time since I did karts but I never saw more than 22k.

Our .21's can hit over 40k.

T'sDad 01-09-2011 11:09 PM
Originally Posted by Werks (Post 8421197)
Hey Kevin, happy new years!
Originally Posted by houston (Post 8421803)
hey Kev!!!

see ya soon? is tan man racin ?
You guys coming down for Nitro Challenge?

Hope all is well.

houston 01-09-2011 11:12 PM
Originally Posted by T'sDad (Post 8462623)
You guys coming down for Nitro Challenge?

Hope all is well.
check your pm box;)

The answer is yes:D

Roelof 01-10-2011 01:39 AM
Originally Posted by wingracer (Post 8438068)
It's been a long time since I did karts but I never saw more than 22k.

Our .21's can hit over 40k.
With onroad engines we setup the clutch to engage at 22.000rpm :rolleyes:

By the way, I was looking up some things last weekend and came to this link:
http://www.rusengines.ru/?content=ca...en.htm&lang=en

For more information please make contact with general Project Manager in USA Edward Naboischikov: [email protected]
The design with a 2-part crankcase and how the screws are placed looks simulair as on page 3 of this topic placed by EBMODS.

http://www.rusengines.ru/car/img/car3_big.jpg
http://www.rusengines.ru/car/img/car2_big.jpg
http://www.rusengines.ru/car/img/car1_big.jpg

Interesting to see the far from middle placed carburator

EBMods 01-10-2011 08:13 AM
Originally Posted by Roelof (Post 8462936)
With onroad engines we setup the clutch to engage at 22.000rpm :rolleyes:

By the way, I was looking up some things last weekend and came to this link:
http://www.rusengines.ru/?content=ca...en.htm&lang=en



The design with a 2-part crankcase and how the screws are placed looks simulair as on page 3 of this topic placed by EBMODS.

http://www.rusengines.ru/car/img/car3_big.jpg
http://www.rusengines.ru/car/img/car2_big.jpg
http://www.rusengines.ru/car/img/car1_big.jpg

Interesting to see the far from middle placed carburator
WOW, I like what I see.. :)

We have several case designs, one with an off-set carburetor very close to that one.

One very interesting thing about this design is it allows the induction window in the crank shaft to be shifted which improves the crank balance. I'm glad to see someone else is thinking about this...

The other thing I've notice is the improved air flow, the throttle response almost feels electric.

nitrozilla 01-10-2011 09:13 AM
has anyone heard of the ascari 3.5 liquid cooled.

http://www.youtube.com/watch?v=ecRuiU8jRZU

nitroexpress 01-10-2011 09:30 AM
Originally Posted by nitrozilla (Post 8464352)
has anyone heard of the ascari 3.5 liquid cooled.

http://www.youtube.com/watch?v=ecRuiU8jRZU
http://www.grossishop.com/usa/index.php

http://www.grossishop.com/usa/downlo...ngs Kyosho.pdf

wingracer 01-10-2011 10:20 AM
Nice little presentation but what interests me isn't the motor but the carb. What's up with little rod on the slide?

NVM, found a pic. Looks like it's just the idle screw.

Glad to see they also have an air cooled version.

EBMods 01-10-2011 10:42 AM
The engineering involved to make the Grossi engine is incredible, lot's of time....

I'd love to test one.

motomatt 01-10-2011 11:16 AM
.


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