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 We have over 700 end of line + a few over stocked items available at discounted prices even lower discounted prices - whilst stocks last. Look out for the them as you browse, download a complete PDF list or visit this page. We simply do not want to transport them to our new premises and re-stock them again!


MY1018E

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Starcctv (Starcctv)
Member
Username: Starcctv

Post Number: 1
Registered: 8-2007
Posted on Thursday, August 9, 2007 - 5:56 pm:    Edit Post    Move Post (Moderator/Admin Only)

hi there,

1470-036 Motor 24v 400w

could you possibly tell me the number of teeth and pitch of the sprocket on this motor?


also, i have noticed another motor on your site that has a sprocket with 6.35mm pitch, will this work ok with a 6mm chain?..
many thanks
Andy
Admin (Admin)
Board Administrator
Username: Admin

Post Number: 553
Registered: 10-2004
Posted on Tuesday, August 14, 2007 - 9:43 pm:    Edit Post    Move Post (Moderator/Admin Only)

Hi Andy,

These motors are fitted with a 11T sprocket which we believe to be 1/4" (6.35mm) pitch. These sprockets will not work with our 6mm chain. We would recommend changing the fitted sprocket with one of the Technobots sprockets which are heavier duty but you would need to drill the sprocket to suit the motor shaft. Hope you spot this reply as you did not leave a forwarding Email address.
Richard P.
Unregistered guest
Posted on Wednesday, June 18, 2008 - 11:04 am:    Edit Post    Move Post (Moderator/Admin Only)

Please can you confirm the size/pitch etc., of the chain sprocket supplied with your motors.[say, the 1470-036 Motor 24V 400W MY 1018E]and the other motors supplied with chain sprockets. This is so that I can order motors together with the correct corresponding sprockets and chain to create a suitable speed reduction. (i.e. - is it 3/8" pitch 12 teeth or what?) - which would be the correct range of sprockets / chain to buy?

Thank you, Richard P.
Admin (Admin)
Board Administrator
Username: Admin

Post Number: 811
Registered: 10-2004
Posted on Thursday, June 19, 2008 - 6:57 am:    Edit Post    Move Post (Moderator/Admin Only)

Richard,

Always best to check to see if the question has been asked before, please see above.
Alistair Dadds (Alid)
Member
Username: Alid

Post Number: 1
Registered: 7-2008
Posted on Wednesday, July 30, 2008 - 9:28 am:    Edit Post    Move Post (Moderator/Admin Only)

Please can you supply me with the shaft diameter and flat length, listed as TBA in the specs and unreadable on the Unite dimensions pic. I want to use this motor with a pulley, roughly 5:1 reduction - would your T5 belts take the strain?
Many thanks, Alistair
Admin (Admin)
Board Administrator
Username: Admin

Post Number: 837
Registered: 10-2004
Posted on Thursday, July 31, 2008 - 7:01 am:    Edit Post    Move Post (Moderator/Admin Only)

Alister,

Our T5 belts would not really be suitable as they could easily be over loading by the torque available from these motors. We will need to check the motor to confirm the shaft dimensions, we will post here later.
Admin (Admin)
Board Administrator
Username: Admin

Post Number: 841
Registered: 10-2004
Posted on Sunday, August 3, 2008 - 9:31 am:    Edit Post    Move Post (Moderator/Admin Only)

Alistair,

We have not removed a sprocket from the motor but the shaft is 10mm diameter and there is sufficient shaft length to fit a replacement gear, sprocket or pulley using a grub screw fixing method.

Regards

Paul
Marc (Mal)
Member
Username: Mal

Post Number: 1
Registered: 10-2008
Posted on Monday, October 6, 2008 - 12:29 pm:    Edit Post    Move Post (Moderator/Admin Only)

I would like to use a MY1018E motor to build an e-bike with regeneration.
Can this motor run in any direction (I would use it CCW) or is this something you need to specify when you buy it?
I plan to control the breaking (downhill in the Alps...) with a UNI-8-24V controller, is that a good choice?
Will I be able to regen (I use LiFePo4 batteries 24V 30ah) more or less depending on the throttle position?

Thank you,

MaL
Admin (Admin)
Board Administrator
Username: Admin

Post Number: 895
Registered: 10-2004
Posted on Tuesday, October 7, 2008 - 7:12 pm:    Edit Post    Move Post (Moderator/Admin Only)

Marc,

This motor is frequently used in both directions and we have not received any feedback to suggest that the timing is anything other than neutral. This means that the speed should also be similar in both directions.

You did not mention whether it was the 300 or 400W motor but both of these are within the capacity of a Uni-4-24V. There is some advantage to using a controller with a closer rating to that of your motor and that is the current limit will go some way to protect your motor. However, having a larger controller means you have the reassurance of that spare capacity.

Regen will occur when you decelerate back to your batteries. I have not heard of any of customers using a Uni in regen into LiFePo4 but we do know of a customer that regens using a different controller into A123 LiFePo4 cells successfully. My concern would be the length of time you could be regen'ing downhill in the Alps due to the lack of regen voltage regulation. Those batteries are quite fussy about the charging voltage. Sorry I cannot be any more specific.
Marc (Mal)
Member
Username: Mal

Post Number: 2
Registered: 10-2008
Posted on Wednesday, October 8, 2008 - 9:09 am:    Edit Post    Move Post (Moderator/Admin Only)

My goal is to ride downhill while pedaling and use the 400W motor to slow down the speed while regenrating the batteries. I will drive downwards during 15km with sometimes a 15% slope.
Concerning the motor, I intend to replace the rear brake disk with a chainring, to have the motor turning at a correct speed for regen I would like to find the same kind of motor but with a planetary gear.
Do you know if this exists and if a planetary gear permitts to use the motor for regen?

Concerning the lack of voltage regulation of the 4QD uni-4-24V you mentionned do you have another proposition for a controller or do you have a recomendation of a device I could add to do the voltage regulation?

Thanks,
MaL
Admin (Admin)
Board Administrator
Username: Admin

Post Number: 897
Registered: 10-2004
Posted on Wednesday, October 8, 2008 - 9:05 pm:    Edit Post    Move Post (Moderator/Admin Only)

Mal,

We only have a single planetary geared motor in the size range you mention and that is 750W and is quite a beast. I can see no reason why a planetary geared motor could not regen, it's the worm drives that wont.

My concern remains that relatvely long term regen could be a problem for your batteries especially if they are near or fully charged already. You need the batteries to be able to absorb the regen energy to avoid the terminal voltage going above 3.6V / cell. It may not be a problem in practice but it is not unusual to see regen voltages of over 40V from a 24V motor. Perhaps give it a cautious try and see. Short term regen to put back some of the energy used is rarely a problem but you have a situation where you can put back more energy than used assuming I understand your application correctly.
Andrew Quirot
Unregistered guest
Posted on Tuesday, December 9, 2008 - 10:33 am:    Edit Post    Move Post (Moderator/Admin Only)

Hi there i am building a drive system for my r/c tank 1/8th scale 85kG. I was thinking of using 2 x MY1018E motors and a 3.75:1 gearbox using a Spur Gear MOD 1.5 30 Tooth and a Spur Gear MOD 1.5 60 Tooth go you think this would have enough tourk for turning and climing Regards Andy Quirot
Admin (Admin)
Board Administrator
Username: Admin

Post Number: 936
Registered: 10-2004
Posted on Tuesday, December 9, 2008 - 8:26 pm:    Edit Post    Move Post (Moderator/Admin Only)

Andy,

Is that the 300W or 400W version? Your reduction of 3.75:1 does not sound anywhere near enough, what diameter is your track drive wheel? A 30T on the motor driving a 60T would only give 2:1 or am I missing something?

We do not know tanks but we did some work with a 85kg 1/8th scale tiger tank for a company and turning on say grass was always a problem. 150W per side was inadequate, 250W was okay so 300W per side does sound possible but you need to ensure you have that reduction ratio right to give plenty of torque at the tracks.
Andrew Quirot
Unregistered guest
Posted on Wednesday, December 10, 2008 - 1:20 pm:    Edit Post    Move Post (Moderator/Admin Only)

Hi there you replyed to my question about gearing one of you motors for my tank you say that you did a job for a companey on a 85kg 1/8th scale tiger tank?. that is the same speck as mine what did you come up with, what did you supply/build i would like the same if it worked. Question are you allowed to tell me the companey (if its modelworks they went bust??) Regards Andy Quirot Jersey Channel Islands
Admin (Admin)
Board Administrator
Username: Admin

Post Number: 938
Registered: 10-2004
Posted on Wednesday, December 10, 2008 - 7:02 pm:    Edit Post    Move Post (Moderator/Admin Only)

Andy,

Our involvement was in the design and supply of the electronics for the IC engine version. We did supply a number of electric motors though for their experiments with an electric drive version. It was some years ago and I'm sure they settled at around 250W per side but things may well have moved on as we declined to supply further electronic assemblies so we lost contact. Yes, it was Modelworks and I'm sad to hear they went under.

You really need to sort out the tank speed and gearbox reduction first.
Marc (Mal)
Member
Username: Mal

Post Number: 3
Registered: 10-2008
Posted on Wednesday, December 10, 2008 - 9:48 pm:    Edit Post    Move Post (Moderator/Admin Only)

Hi,

Here above you mentioned a motor that I can't find on your web site : can you please confirm that it is a 24V motor and tell me the price?
you wrote: "We only have a single planetary geared motor in the size range you mention and that is 750W and is quite a beast."
I would be interested in buying the beast!
Thank you,
MaL
Admin (Admin)
Board Administrator
Username: Admin

Post Number: 940
Registered: 10-2004
Posted on Friday, December 12, 2008 - 7:55 pm:    Edit Post    Move Post (Moderator/Admin Only)

Mal,

You can find the motor at http://www.technobots.co.uk/acatalog/Online_Catalogue__200W_Geared_Motors_83.htm l it has part number 1471-118. Not sure how many are left as we are no longer receiving new stocks from Unite motors in China. This week saw two models go out of stock.
Marc (Mal)
Member
Username: Mal

Post Number: 4
Registered: 10-2008
Posted on Sunday, December 14, 2008 - 9:36 pm:    Edit Post    Move Post (Moderator/Admin Only)

Hi,

I saw this motor that you mention (1471-118) but it is written 36V and I am looking or a 24V motor. Do you sell a powerfull geared 24V motor?

MaL
Admin (Admin)
Board Administrator
Username: Admin

Post Number: 942
Registered: 10-2004
Posted on Monday, December 15, 2008 - 3:01 pm:    Edit Post    Move Post (Moderator/Admin Only)

Mal,

Sorry, missed your bit about 24V, regretfully no we were unable to source it in 24V version. All we have left are listed on our website and this range is shrinking fast.

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