Planet Minis

RySem · 01-10-2009, 11:06 PM

Perhaps Z can chime in on this one as he seems to be the gearing guru. For my CT70 I will be using an 03 XR50 engine with complete takegawa R-stage 88 kit. I will also be installing a taky 50mm crank, making it a 106 R-stage setup. I think I am going to put an ATC70 4-up trans in as well (anyone know the gear ratios for these?) while I'm doing the crank. With this 106-R 4spd setup what kind of gearing should I be looking at? The terrain here is pretty hilly so that would be a consideration. I am looking for a safe cruise speed of around 50mph.

tmas · 01-11-2009, 09:49 AM

Quote:

Originally Posted by RySem

Perhaps Z can chime in on this one as he seems to be the gearing guru. .

Use the chart Z made on honda50.com.
tmas

http://www.honda50.com/speedcalc/speedcalculator.html

RySem · 01-11-2009, 10:19 AM

I was playing with that a bit but there is no ATC/TRX trans. I would imagine they are geared differently than say a CT70H. I also don't know whats realistic with the engine I have. That chart only gives the theoretical mechanical speeds and doesn't account for the power delivery at the given speeds.

01-10-2009, 11:06 PM	#1 (permalink)
RySem 2nd Gear Member Join Date: May 2008 Location: Oakville, CT Posts: 377	Need gearing help Perhaps Z can chime in on this one as he seems to be the gearing guru. For my CT70 I will be using an 03 XR50 engine with complete takegawa R-stage 88 kit. I will also be installing a taky 50mm crank, making it a 106 R-stage setup. I think I am going to put an ATC70 4-up trans in as well (anyone know the gear ratios for these?) while I'm doing the crank. With this 106-R 4spd setup what kind of gearing should I be looking at? The terrain here is pretty hilly so that would be a consideration. I am looking for a safe cruise speed of around 50mph.

01-11-2009, 10:19 AM	#3 (permalink)
RySem 2nd Gear Member Join Date: May 2008 Location: Oakville, CT Posts: 377	Re: Need gearing help I was playing with that a bit but there is no ATC/TRX trans. I would imagine they are geared differently than say a CT70H. I also don't know whats realistic with the engine I have. That chart only gives the theoretical mechanical speeds and doesn't account for the power delivery at the given speeds. Last edited by RySem; 01-11-2009 at 10:21 AM.

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