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-   -   Engine Comparison... Help? (https://www.rcuniverse.com/forum/speed-rc-nitro-boats-117/9574527-engine-comparison-help.html)

fastpepper 03-16-2010 06:53 PM

RE: Engine Comparison... Help?
 
well i just emailed them with that very question... :P
i just realy like the look of the engine, and that its the same side exhaust that the stock dynamite.32 was. so it would be easier that way....
and wouldn't this .46 win over the rossi .28?

Dan S 03-16-2010 06:58 PM

RE: Engine Comparison... Help?
 
if it was a modified TT (thunder Tiger) maybe.

how much do they want for the .46 TT ?

Dan.

fastpepper 03-16-2010 07:00 PM

RE: Engine Comparison... Help?
 
same as rossi.... 200$ i think.... :P

Dan S 03-16-2010 07:08 PM

RE: Engine Comparison... Help?
 
we don't normally use or go by the specs since there are some companies that seems to exaggerate.

but just for fun.

the TT .46 = 2.46HP @ 23000 rpm ($200).
the NR .28 = 2.87HP @ 34000 rpm ($250) and
the NR .21 (5 port) = 2.8HP @ 38000 rpm ($215).

Dan.

fastpepper 03-16-2010 07:38 PM

RE: Engine Comparison... Help?
 


ORIGINAL: Dan S

we don't normally use or go by the specs since there are some companies that seems to exaggerate.

but just for fun.

the TT .46 = 2.46HP @ 23000 rpm ($200).
the NR .28 = 2.87HP @ 34000 rpm ($250) and
the NR .21 (5 port) = 2.8HP @ 38000 rpm ($215).

Dan.
hmmm.... but didn't in another thread on nitro engines decide that lower size engines like the .21 ( and maybe even the .28 ) didn't have enough TORQUE to turn the prop size needed for this boat? and the .46 could actually increse the size of prop substantially?
just my thoughts on that.... :P also notice the max typical rpm noted. this is probably a first sign that it has lower torque and just higher rpm...?
ideas?

Dan S 03-16-2010 07:57 PM

RE: Engine Comparison... Help?
 
in a way, yes.
normally with more torque you will turn a bigger prop for sure.
rpm posted are not the max rpm's.

I don't know what size prop you are looking at turning?

I would say that either the NR .21 or .28 will get that SW 36 going like snot.

and in all fairness I don't think you would be disappointed with the TT .46, in the end it all comes down to your decision.
an engine with the proper crank or an engine with an SG crank that will need you to modify a flywheel or find someone that makes one.

what ever your decision is, I am sure you will gave fun.

Dan.

fastpepper 03-16-2010 08:03 PM

RE: Engine Comparison... Help?
 
so i just got the email back from for the SG conversion kit....
xD

> Hi Justin,
My flywheel will work on this engine. Shipping to Canada via first class mail will be $4.00 USD. If you choose to go with this one your total will be $14.00 USD. I use paypal for payments, my address is [email protected]. Thank you.

im so happy! now i just have to get the TT engine... i think i will go for this engine because of the bigger prop... so it wont cavitate as much... and it will jump out of the hole faster... :) cornering will be better too...?
im going to move the trim tabs closer in and then move the battery beside the fuel tank. :)
this is going to be a nice boat :)

apache 1 03-16-2010 09:48 PM

RE: Engine Comparison... Help?
 
Hey Fastpepper , did you find where you can get that that TT.46 ? How much was it ? What about all the accessories? I'm interested. To me it looks like a great engine for the shockwave.

fastpepper 03-16-2010 10:34 PM

RE: Engine Comparison... Help?
 
lol ebay dude.  :P http://cgi.ebay.com/ws/eBayISAPI.dll...:MEWNX:IT#shId
i think thats it....
i bought one for 100 GBP
i offered that... and he took it.... :P
try like 95...? xD
hahaha
Justin


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