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RE: Motor and Gearbox Testing - 3/1/2009 6:30 AM   
swathdiver



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From: Boynton Beach, FL, USA
Status: offline 		I did the same thing, spent $10 at Radio Shack buying a bunch only to see them inside while I was trying to solder the new 104s on!

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RE: Motor and Gearbox Testing - 3/5/2009 9:36 AM   
HL Bulldog


 

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Status: offline 		i saw a mention of 5 pole motors somewhere on here, has anybody had any luck with them?

i will be converting an old style tamiya king tiger trans to dual motor and the new hen long boards in the near future and am collecting info before i start to spend <going to take out the clutches and put in a pair of universal spur gear mounts i will either find or make in the same place with slightly smaller or off set spur gears>


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RE: Motor and Gearbox Testing - 3/5/2009 3:16 PM   
thomasjohnmurphy


 

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Status: offline 		I've converted several old Tamiya KT using the HL gear boxes. I've used the standard ones (tiger box as the output shaft is long enough. You will need a strip of 2mm sprue to separate (space) the gear box from the side of the tank (it also keeps the gear axels from rubbing on the side. I use millioput to set the motors in place then when hardened I use small screws on the side and bottom to secure the motors. It has worked perfectly. You will need to grind flat one side of the output shaft to fit the tamiya drive sprocket (easy with a dremel) I just got the 3-1 gear box from RC Command and will install them shortly. I've been usuing the stock gear box with the white capped motor with a 8t pinion. It's worked fine (especially I have metal tracks) but the 3-1 will make it a real stump puller. You can also use the HL turret travere ring and motor (but you will have to space the ring to fit (I use a strip of sprue - don;t recall the thickness) I usually buy a cheap 1/24 HL tank off ebay to get all my miscellaneous parts like turrel ring, turrel motor.gun elevation motor etc /upper wire harness. you will still need the smoke and sound electronics. Its easier to do than you think

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RE: Motor and Gearbox Testing - 3/5/2009 7:46 PM   
HL Bulldog


 

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Status: offline 		thank you, what i am after though is some info on 5 pole motors, the rest of the conversion i am not to worried about, i have been reworking rc's for at least 15 years now, scratchbuilding for more then half of that, all ready did the hen long turret ring mod

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RE: Motor and Gearbox Testing - 3/6/2009 5:55 AM   
swathdiver



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Status: offline 		Isn't that what the stock white capped motors are?

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RE: Motor and Gearbox Testing - 3/15/2009 5:16 PM   
HL Bulldog


 

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Status: offline 		checked yesterday the white cap are three pole, i will keep looking...


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RE: Motor and Gearbox Testing - 11/3/2009 2:39 PM   
siam


 

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Hello swathdiver, I 've tried to figure out from the articles above but still I am not  quite clearly understand so could I ask for your comment on the motors selection? Which motor is more torquey? Which motor is more speedy?
Between  Graupner speed400 and Tamiya speed 380. I want to put them combined with 3:1 metal gear boxes in my M41A3.



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RE: Motor and Gearbox Testing - 11/3/2009 3:23 PM   
swathdiver



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Status: offline 		Don't remember the exact specs of the Tamiya 380 but believe the Graupner Speed400 is your best bet on all accounts.

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RE: Motor and Gearbox Testing - 11/3/2009 3:38 PM   
siam


 

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Status: offline 		Thank you sir
   I do believe in your answer.
siam
BKK THAILAND

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RE: Motor and Gearbox Testing - 11/3/2009 4:16 PM   
swathdiver



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RE: Motor and Gearbox Testing - 11/12/2009 12:07 PM   
captain Bullshot


 

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Hi all,

 I have found the information on motors and gearboxes in this thread fascinating. I have a HL Tiger 1 and HL KV 1, both have the new silver capped motors. I would like to find the specs on this motor so that I can juggle gear ratios to suit the scale speeds of my two tanks. I guess because they are new, the informed boffs have not had time to test them?

My simple tests have deduced that it drives my Tiger through standard HL metal gears at 1.76mph. This seems to put it somewhere between the output of the white and black capped motors. I have not tested my new KV1 yet.

I don’t know if they are Suntech motors, they are all marked RS380SH followed by a serial number and a faded brand name that looks similar to the Mabuchi mark.

I would be grateful for any information.

Regards,

Captain Bullshot   



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RE: Motor and Gearbox Testing - 11/12/2009 5:47 PM   
swathdiver



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Status: offline 		Someone posted speed test specs and running it through the calculator the motors were said to turn almost 11,000 rpms. This was within the last 2-3 months I think.

It was YOU! 10,750 rpms was the calculation underway and under load based on the numbers you provided.

< Message edited by swathdiver -- 11/12/2009 6:19 PM >

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RE: Motor and Gearbox Testing - 11/13/2009 10:14 AM   
captain Bullshot


 

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Hi Swathdiver,

 

You’re right, based on the Tiger’s performance the new motor was turning at 10,750 RPM, but that was driving the tank under full load. The figures in this thread relate to no load or sprocket RPM so I can’t compare the new motor to the white and black caps as I don’t have the instruments to measure RPM.

 

If the new motor is a Mabuchi then it's performance is almost identical to the black capped motors. The motor looks like a Mabuchi but is made in China. It may be a copy and not perform as well.

 

Would a black capped Suntech push a Tiger through metal gears and HX18 at the same speed of 1.76mph? Would a drop from 16200RPM with no load to 10750RPM under full load sound about right?

 

Any advise would be appreciated.

Regards,

Captain Bullshot

 

 



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RE: Motor and Gearbox Testing - 11/13/2009 7:48 PM   
swathdiver



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Status: offline 		We have a 1st generation HL Tiger that was upgraded to smoke and sound electronics (TK-RX13 board) but still runs plastic tracks and gearboxes. It did 2.49mph or 4.01Kmh on a speed run with the black capped motors, mathematically working out to about 15,200rpms under load.

Scale speed for the Tiger is about 1.50mph/2.41Kmh.

The white capped motors running through metal gearboxes and tracks ran about 1.56mph on another Tiger, about 9500rpms.

I don't know the differences between boards, if there are any as it relates to these tests, as TK-RX13s are still used in our motor pool.

Judging from the available data, the black capped motors are fastest and should work well with your TK-RX18.

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RE: Motor and Gearbox Testing - 11/13/2009 8:11 PM   
thomasjohnmurphy


 

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Status: offline 		black capped motors, plastic gears and a RX 18 board would make a tiger like a race car

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RE: Motor and Gearbox Testing - 11/13/2009 8:34 PM   
swathdiver



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Status: offline 		I bet changing to an 8-tooth pinion would slow it down some and offer a nice gear reduction for more tractive effort without compromising speed too much. Yes, according to the calculator it would still run almost 2mph with an overall ratio of 49:1 compared to 39:1.



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RE: Motor and Gearbox Testing - 11/15/2009 12:04 PM   
captain Bullshot


 

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Status: offline 		Thanks for the response, it sounds like the silver caps are more akin to the white caps than black caps. That leaves me even more confused as exactly what they are.

I don't want to buy a couple of white capped motors if they are going to be the same the silver, and I understand 3/1 reduction gears are now supplied with silver caps. Based on the performance with standard gears that would make my tanks very slow indeed.

I want to try Swathdiver' s suggestion of fitting an eight-tooth pinion but cannot find a supplier who stocks them in the UK. Does anybody know of a stockist?

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RE: Motor and Gearbox Testing - 11/15/2009 2:30 PM   
thomasjohnmurphy


 

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Status: offline 		here is what I use (with a standard metal gears with white capped motors)

http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXMRG2&P=7

They work great especially if you are using the RX18 board

If you go 3:1 I suggest getting speed400 motors (without them the tanks are really slow)

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RE: Motor and Gearbox Testing - 11/17/2009 12:34 PM   
captain Bullshot


 

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Status: offline 		Many thanks for the suggestion thomasjohnmurphy, I'll order a couple of 8-tooth pinions today.

Captain Bullshot

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All Forums >> RC Cars, Buggies, Trucks, Tanks and more >> RC Tanks >> RE: Motor and Gearbox Testing
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