MikaR

Little report because I know most of you guys are always interested about engine performance: Comparing the Novarossi S21 P3 and Team Orion CRF21 -

I ran Orion with 16% nitro & Kyosho "rear exhaust" IGW-007 pipe and Nova with 25% and their pipe - Orion was notably more powerful and ran better & more smoothly whereas with the P3 I had constantly the feeling that I have to "pull" the trigger to get the relatively big car moving. Evidence is also, that I had to adjust the shift point of the tranny by opening 1/2 turn to make it shift earlier i.e. on lower rpm with the P3.

This is really no big surprise since the Orion "race" model is roughly double the price of the Novarossi "sport" engine. Nova is not bad, but leaves some room for more power - or the wish for it.. but it surely looks nice

bigcat17

iTrader: (4)

Gonzo, Midwest series has there own rules and those motors were perfectly legal. There rules are any motor under $200.00 with a functional pullstart.

Jspeed

At the Ipanema GT Worlds we saw the “Spec” class Champion’s “pull-start” crankshaft break in half 44 minutes into the 45 minute A Main.

It’s been our racing experience to see the occasional pull-start engine failures, due to air leaking conditions, broken cords, bearing failures, crank-shaft fractures and explosions in some engines; all resulting in end of fun for the GT racer at our events.

That is why we did away with the manditory pull-start engine requirement.

So Mika...

How was "run time" between the 2 engines?

MikaR

Jeff.. sorry haven't clocked the ORION, Nova seems to be well above the 10minute range with 150ml tank.. somehow I believe them being rather equal.. Orion may burn more (power requires fuel) but you can also run it a bit leaner...

Gonzo RR

iTrader: (1)

awwww ok we'll that explains it! Thxs!

Hey so will that be the case for the Byron Race coming up? any motor under $200 is legal?

Bubba Cola

iTrader: (1)

2010 GT Class Rules

All brands of cars that fit into the following rules are permitted to compete in the GT class.



These rules allow for some "racer inovations" to flourish, but at the same time will maintain the spirit of the class.



1. Chassis: Any 1/8 Buggy/Truggy based and shaft driven chassis GT nitro cars.

(Any manufacture or off-road racer conversions are OK also.)

Cars can only use commercially available production

aluminum lower chassis plates. No carbon fiber lower chassis

plates are permitted.

2. Body: Any commercially available "GT" race car stylr/type body. Must look

like a car that could actually be driven on the street with a passenger

in real life or full scale. The engines cooling head fins can not be

exposed from the top or the sides of the body. Rear wing or

spoiler must be attaxhed to the actual body. (No chassis mounted

or "buggy/truggy" type wing mounts).

3. Tires must

fit under the car's body from overhead view. Adding "fender flairs"

on the body to increase tire coverage is not allowed. No "foam"

tires permitted.

4. Fuel Capacity: All cars can have 1 fuel tnak with a maximum capacity of

150cc.

5. Diffs: Cars must be equiped with standard gear diffs only. No "TCD"

type diffs are permitted.

6. Clutch: No "adjustable" or "slider" type clutches allowed. Only 2, 3, or 4

shoe buggy based systems are allowed.

7: Engine: Cars can use any of the engines from the "Approved" list. All spec

engine internal parts must remain 100% un-modified factory stock.

Racers may remove the "Pull-Starter" from Approved engines and

replace the back plate. The engine's crankshaft and all internal

parts must remain "100% un-modified factory stock".



GT Class Approved Engines

Kyosho: GXR28SG

Kyosho: GXR28 (KYO74025)

Ofna: .28 Force (OFN52217)

Ofna: Hyper .28 (OFN53220)

Axial: .28 Spec (AX001)

Axial: .28 Spec (AX002)

Sportwerks M26 (SWK8085)

Go Technology: .21 3 Port (GTR213PT)

OS Engines: 21VG(P) (OSMG2058)

The engines listed above offer a ;evel playing feild for the GT class racers.

*1speedy

iTrader: (12)

Just so ALL are CLEAR these last set of "rules" are only (for his) race they are NOT the 2010 GT "rules"

JLock

iTrader: (4)

I got that when he posted "his" rules. But, it is nice to see that his rules mimic the Ipanema rules in a lot of regards, so, Bubba's GT racers don't have to change/do much out of the ordinary to be legal for Ipanema-sponsored races.

Jspeed

Its excellent to see the “GT Spec Class” rules being utilized by Bernie & “Leisure Hours” are solid.

My understanding is that during the “Byron’s Fuels” event we’ll be running the “GT Spec Class” only. We should all understand & respect that 100%.

The “2010 Ipanema Sports US GT Nationals” event also being held at “Leisure Hours Hobbies”, will have “GT Spec” – “GT Open” – “GT Electric” classes too.

It’s going to be a great summer!

TYLORD

iTrader: (11)

I am looking for some measurements on the Kyosho GT1 or GT2 front bumper. If someone could help me with this I would appreciate it very much. Just need the measurements between mounting holes for the screws.

I am converting my Thunder Tiger ST-1 truggy to GT2 specs, but cannot find the rally bumper anywhere, so I am hoping the Kyosho will fit with no or minor mods.

I am using the ST-1 chassis/drive train, with the S3 suspension and custom shock towers. Haven't decided on shocks yet. The truggy chassis's wheelbase matches the GT2's, so I will be able to use GT2 bodies.

Thanks again in advance.

*1speedy

iTrader: (12)

Yea Good thing

Kyosho: GXR28 (KYO74025) = Should be used as a R/C Boat anchor

Sportwerks M26 (SWK8085) whose brain child was this, LMAO No local H/S has this on their shelf LMAO

Go Technology: .21 3 Port (GTR213PT) this engine has not been available in the last year and a half, GL finding this engine.

Down to 3 engines to choose from.
Guess OS is going to make out on this class. LMAO


Ofna: .28 Force
Axial: .28 Spec
OS Engines: 21VG

Always thought spec racing should be fun. You are trying to attract new racers with crap engines. GL

Maybe if you’re lucky Ofna will come out and give a tutorial on how to properly fix a pull start

Glad Mr. Desoto and Novarossi have stepped up at other tracks with affordable "spec" Italian Quality Engines.

FastPete

iTrader: (44)

WOW

Bottom line is you could win with any of those engines if you are a good driver.

Thanks Bernie for posting those.And what you and Jeff are doing for the class.I dont see anyone else stepping up and doing it.Just complaining.

Rules are rules.Guess I will just save the LRP for the Midwest series stuff.

And get that thing dialed Bernie.Im coming for you.

Pete

JLock

iTrader: (4)

+1 Good Post!!

I especially like the part that I highlighted in bold. Less complaining and more racing!!!

*1speedy

iTrader: (12)

Guess you missed this post....
Thanks for stepping up the game Mr.Desoto

williamw

iTrader: (5)

Easy there, the engine list is several years old. Race where you want, or where the rules suit you and have fun.