High torque gearbox and motor

[Someone]

I’m planing on getting a really heavy lower hull for my HL king tiger and I was wondering what the best high torque low gearbox/motor. All recommendations will be considered.

[Max-U52]

Taigen black steel ball bearing (V2) in what they call "4:1". Not the actual ratio, but that's a long story. I think they're about $70, and I've never had one fail on me. I have them in multiple tanks in both 3:1 and 4:1 and they're my go-to gearboxes. Erik even used them in his RC lawn mower.

[keilau]

3:1 and 4:1 - Refers to the amount of reduction gears to the final drive shaft. The actual ratio for the 3:1 gearboxes are 39:1 while the actual ratio of the 4:1 gearboxes are 90:1. The 3:1 gearboxes are faster but have less torque while the 4:1 gearboxes are much slower and offer much more torque. The 4:1 gearboxes are recommended for metal models if possible..

https://www.taigentanks.com/collections/taigen-tank-parts/products/taigen-tanks-steel-ball-bearing-v2-gearboxes

I have one of this Taigen 3:1 gearbox on my 2005 HL Pershing and can vouch for the quality of construction of the gearbox. I have no need for the 4:1 gearbox which may be what you are looking for.

[keilau]

Taigen black steel ball bearing (V2) in what they call "4:1". Not the actual ratio, but that's a long story. I think they're about $70, and I've never had one fail on me. I have them in multiple tanks in both 3:1 and 4:1 and they're my go-to gearboxes. Erik even used them in his RC lawn mower.

Second your opinion. Taigen used to make the V2 gearbox with a mounting plate and a flip over cover. I like these old features. The mounting plate strengthens a plastic chassis.

https://www.youtube.com/watch?v=H9fwexriXMw

If high torque for a heavy metal chassis is not needed, my perference is the Heng Xin gearbox with 390 motor.

https://www.ebay.com/itm/354780926340?_trkparms=amclksrc%3DITM%26aid%3D1110013%26algo%3DHOMESPLICE.SIMRXI%26ao%3D1%26asc%3D259212%26meid%3D57815b2f36dc4028acb1571bcf778018%26pid%3D101196%26rk%3D1%26rkt%3D12%26sd%3D224639281366%26itm%3D354780926340%26pmt%3D1%26noa%3D0%26pg%3D2332490%26algv%3DPromotedRVIPbooster&_trksid=p2332490.c101196.m2219&itmprp=cksum%3A35478092634057815b2f36dc4028acb1571bcf778018%7Cenc%3AAQAJAAAA8CwDxH%252FaslyJlxG5OwCzDVuiXPJ%252FWWXOk1gAi1ZnM0I9jH3oDNe89oIQfLViqdBo27w2PP%252BzzH0MNm1BhIOIaWQQjNok18MxN72TvhRQyTAdZiFa6gynW6RoPmZQt4EQGjchmDubLKJZ9E90vO4560Ga--y92gnmf2KPqy6T5%252BgLRY4Jb2NNwKQT3RvPAHaI0SbSiLCVLc2HEhDqCSODuJxQEl1DP2VpUYcPWegEZQNR59rqVA7RjO6qChOugoQB2Ap3bQ9WnyLktzjXHRrOHAM0fHnSEFUEP99DUn%252BFSi%252BQfCIJBuO5zG4kDtIc79jvvw%253D%253D%7Campid%3APL_CLK%7Cclp%3A2332490&itmmeta=01HV756DNBV349Y2ZH57KJC0D4

[Rubicon99]

I’m planing on getting a really heavy lower hull for my HL king tiger and I was wondering what the best high torque low gearbox/motor. All recommendations will be considered.

A little more information would be nice to help us directly you in a more focused way. What are you trying to achieve performance wise? Slow realistic movement? Or power to "over come" an increase in weight while retaining stock like performance?

Gearboxes, motors, electronics, battery voltage and what combinations of each can can be numerous. But enough of us have experience here to make it simple with just a bit more clarification of your needs.

[Max-U52]

I have one of this Taigen 3:1 gearbox on my 2005 HL Pershing and can vouch for the quality of construction of the gearbox. I have no need for the 4:1 gearbox which may be what you are looking for.

I have those same gear boxes in my pershing and my M41 and they run great.

As for what taigen said about the 3:1 and 4:1, That's a very, very long story. It all started years ago when someone came out with a gear box that was an ad-on for the tamiya tanks and it was supposed to triple the top speed. Then HL came out with new gearboxes and started calling them 3:1. Imex knew theirs weren't really 3:1 but went with it anyway. I started calling them 3 shaft and 4 shaft gear boxes because the 3:1 had 3 different reduction shafts between the pinion and the axle, and the 4:1 has 4 different reduction shafts between the pinion and the axle, and Erik agreed and that's why he wrote that little piece about the number of shafts. I've even done several videos on the subject if anyone needs to see them. I gave Erik 3 kinds of hell when he wanted to start calling the dual ratio Low/Low gearboxes 5 to 1, but to no avail, that's what they still call them.

[Someone]

A little more information would be nice to help us directly you in a more focused way. What are you trying to achieve performance wise? Slow realistic movement? Or power to "over come" an increase in weight while retaining stock like performance?

Gearboxes, motors, electronics, battery voltage and what combinations of each can can be numerous. But enough of us have experience here to make it simple with just a bit more clarification of your needs.

I’m looking for slower scale speed with good off road performance. The tank chassis I’m looking at is about 18 lbs.

I’ve been looking at the td dual current and the taigen v2 gearbox and I want to know witch is better.

[keilau]

I’m looking for slower scale speed with good off road performance. The tank chassis I’m looking at is about 18 lbs.

I’ve been looking at the td dual current and the taigen v2 gearbox and I want to know witch is better.

Tongde dual current gearbox with 56:1 gear ratio.

For an 18 lbs chassis, the Taigen's 390 motor is not a good match. You want the 540 motors.

[Rubicon99]

I’m looking for slower scale speed with good off road performance. The tank chassis I’m looking at is about 18 lbs.

I’ve been looking at the td dual current and the taigen v2 gearbox and I want to know witch is better.

18lbs-25lbs is not that heavy it's more a high moderate weight and with in the weight for even the stock steel gears and 390 motor to handle well as long as you are above 9.5 volts of power.

If money is no object then the steel gear "dual current" transmission has the best overall smooth control at lower scale speeds especially if you choose the high torque version not the high speed version. The higher the gear ratio numbers the higher the torque and slower the overall transmission speed.

[Someone]

I did find a td 4:1 gearbox driven by two 550 motors at a fairly cheap price, but they were made for a Leo and I don’t know if the shaft lengths line up, however I have seen the king tiger and Leo show up under the 58 mm shaft length for multiple other gearboxes so I’m thinking the one I found might work for my tank

https://www.dklmrc.com/details/p2389473_14664952.aspx

[Rubicon99]

I did find a td 4:1 gearbox driven by two 550 motors at a fairly cheap price, but they were made for a Leo and I don’t know if the shaft lengths line up, however I have seen the king tiger and Leo show up under the 58 mm shaft length for multiple other gearboxes so I’m thinking the one I found might work for my tank

https://www.dklmrc.com/details/p2389473_14664952.aspx

Since scale slow speed is what you said you are focusing on you would be better served with 390 motors and 4:1 gears. The 550 motors will have much higher RPMs then the 390s and thus not have the scale super heavy WW2 tank feel. Performance with 550 and 4:1 gearboxes will be closer to a stock plastic hull KT with 380 motors and stock gears.

Have you also looked at the Mato "5:1" gearboxes. These are quite common to see with the European tankers and their "obsession" with scale heavy tank speeds.

[Max-U52]

The shaft length should be fine, the only possible problem I can see is clearance between the top of the right housing and the bottom of the upper front glacis. The jagdpanther has the same issue, and 4:1s won't fit, but I think the king tiger has more room there. And that's a good price, if they're quality gears. I just might pick up a pair of those myself at that price, just to play around with them a little bit.

[Someone]

Since scale slow speed is what you said you are focusing on you would be better served with 390 motors and 4:1 gears. The 550 motors will have much higher RPMs then the 390s and thus not have the scale super heavy WW2 tank feel. Performance with 550 and 4:1 gearboxes will be closer to a stock plastic hull KT with 380 motors and stock gears.

Have you also looked at the Mato "5:1" gearboxes. These are quite common to see with the European tankers and their "obsession" with scale heavy tank speeds.

I’ve have looked at the mato gearboxes and they seem pretty good but I have heard of quality control issues for mato parts.

[Rubicon99]

I’ve have looked at the mato gearboxes and they seem pretty good but I have heard of quality control issues for mato parts.

NO gearbox on the market is without criticisms or problems whether true or untrue.

Don't overlook mounting simplicity. Your metal hull may need to be modified to properly secure anything but a specific gearbox the company intended to be used with their hull. Its not all universal drop in fitment.

[keilau]

I did find a td 4:1 gearbox driven by two 550 motors at a fairly cheap price, but they were made for a Leo and I don’t know if the shaft lengths line up, however I have seen the king tiger and Leo show up under the 58 mm shaft length for multiple other gearboxes so I’m thinking the one I found might work for my tank

https://www.dklmrc.com/details/p2389473_14664952.aspx

I am unable to find any specification of the 550 motor used in this gearbox such as max voltage, rpm vs. volt and torque vs. rpm. I suggest you to replace the motors with genuine Mabuchi RS-550SH of the right rpm spec. Mabuchi motors have ball bearings at both ends of the motor shaft and are dynamically balanced. They have 20000 rpm at 12 volt supply. Yes, the shaft length of 58mm is the right one for Leo2. If you use the 2S Lithium pack, this gearbox will run the same scale speed as the 380. If you increase the battery to 12 volt, it will run at similar speed as the 390.

I assume the 550 motor on this gearbox to be the same as the one most popular on 1/10 scale RC cars with 20000rpm at 12v.

[tank_me]

I don't have a King Tiger, but I do have those 550 gearboxes in my Abrams. They are wide and that's usually why they are in modern tanks like the Leo, Chally, and Abrams. So wide in fact that even the Abrams doesn't have room for the 550s. I had to replace them with shorter 540 motors to get them to fit in the Abrams. With the 540s, the Abrams is slower than scale speed, but way faster than crawling like WW2 tank. The gearboxes can be run slower with good throttle control on the Clark or a HL 6 or 7 controller.

[keilau]

I don't have a King Tiger, but I do have those 550 gearboxes in my Abrams. They are wide and that's usually why they are in modern tanks like the Leo, Chally, and Abrams. So wide in fact that even the Abrams doesn't have room for the 550s. I had to replace them with shorter 540 motors to get them to fit in the Abrams. With the 540s, the Abrams is slower than scale speed, but way faster than crawling like WW2 tank. The gearboxes can be run slower with good throttle control on the Clark or a HL 6 or 7 controller.

Toucan Hobby is selling these 550 motors for the Heng Long dual 550 gearbox. I do not expect them to be genuine Mabuchi, but these 550 looks more like the HL grey 380 construction quality than their blue 380. I am just guessing by looking, do not have the motors. What do your HL original 550 look like?
https://www.ebay.com/itm/325108458115?itmmeta=01HVBNN1Y60EQDZPA1CQ78VN1Q&ha sh=item4bb1f96283:g:0S4AAOSwAFpiOEva&itmprp=enc%3A AQAJAAAA8HCpyMP6bNyaKmXqUAlvTtHV%2FVcbFgTAx5Llir%2 FXIhAviw4KwuQKW%2Bw32y1x6IeJ88Lg4uHW0tvxMCUQlvmoUP N4JsWd58ioFEEwB554tJbdp9%2BJjioE7GCJLpH%2Btt%2B7MN CT2NE%2FJo0E2vq0JcuUoufYK9FVO%2FiWz%2FP98t5QjNTFdl 3gvjZ2HT9sZ4NXD9v2r6%2BCT%2FaslVAdQNz1D9XMmxAx1Mkc 9yEv29DVLn7XZrgirCjp2rxr4%2B4dCR%2BV3k%2B%2BNfozol FHx3zevd2QYavW%2BxZ5f1ytfXum%2BFayYhMRNwAW3kyWL%2F rOc7Xc5AZS4%2B11tA%3D%3D%7Ctkp%3ABFBMpJ_U9dpj

[tank_me]

Just generic 550s. No markings on the motor housing itself. These gearboxes are not made by HL, they are made by Canshuo. HL does not make gearboxes like this.

[Someone]

If someone could post a link to one of these motor that will be greatly appreciated.

[keilau]

If someone could post a link to one of these motor that will be greatly appreciated.

https://www.mabuchi-motor.com/?_ga=2.155659966.484231747.1713323568-1727255398.1713323568

This is the manufacturer and inventor's website. You can find all the technical details here using specific model numbers.