Geared Diff in Lupuz/TC02C
 

Hi,

My first post!

I have just completed and run the prototype of my aluminium gearbox to enable the Team-C geared diff to be used in the Lupuz/TC02C and anything else that uses the original gearbox from the Lupuz.

Would anyone else be interested? My current plan is to make a small batch and get one on ebay asap.

I shall try to attach a picture but as I have said, this is my first post on this forum so anything might happen.

I am very interested in one of these!
Do let me know what the price would be incl shipping to Belgium.
Thx.

Me too. I am very interested

Price is a good question.

If I logged all the hours spent on the prototype it would be about £30,000 but, as with all things, it is worth what you can get for it.

I notice that a Schumacher aluminium gearbox retails for about £65 so my plan was to put is on ebay with a starting price of £50 and see where it went.

The rear T-Plate has to be modified and the price would include the supply of a modified part plus gear casing and fasteners. Because the T-Plate has to be machined away where the gearbox sits, I have extended the gear casing forward to provide two additional fixing points, ahead of the thick rib that locates the pivots for the rear wishbones. It's a very stiff assembly.

For a limited period, anyone who contacts me via a PM on this forum (if you have them) and subsequently sends me a T-Plate for modification, can have one at the starting price of £50. Orders would be taken in strict rotation.

Personally, I think that you should buy them just to put in a glass case and look at them! But I'm biased. :D And they do let you put the beautiful Team-C geared diff in your car.

I suspect, but I'm still measuring one up, that the Durango diff would also fit.

It would be of assistance to me if someone could please give me a definitive list of all the Team-C cars that this gearbox is used on. :confused:

Hi Clive it's lee

The cars that you have stated also the ansmann x2c and madmonkey

I have seen this gearbox at the weekend and it is a pice of art the quality of the gearbox is better than the vega,

Thanks Lee,

The next one will be even prettier and a tad lighter too. :D

It's spoken for but I have material for two more at the minute.


Is there a truck or SC variant?

Looks nice! If your down at southport this sunday id like to take a look! Would making it out of some kind of plastic reduce cost? Delrin for example? It will fit the 4 cars mentioned, the ansmann x2c (tco2c) and the ansmann mad monkey (lupuz) as they all use the same rear t piece and gearbox... Hope that helps :thumbsup:

Sorry Kusal,

I missed your question regarding shipping earlier.

Shipping to Belgium would be an additional cost in the order of £10 to £12 for a two day service.

I originally stated that I would require the T-Plate to be sent to me for modification but I see that DMS have them in stock at £4 so that is another additional cost if you don't have a spare T-Plate and want to keep racing whilst I'm machining.

Cheers

Clive

Thanks Tom,

I was going to be at Southport this Sunday for some much needed practice but I now have my chin on the tank in an attempt to complete Production Unit #001 in time for a guy to use it at next month's BRCA indoor event.

I think that making it in plastic would be cheaper if it were done by 3D printing. But I don't have one of those..........yet!

Machining plastic is a bit of a sod and usually gives you about a week's work deburring all the edges and little feathery bits that get left behind. Glass filled plastics are better in that respect but the tool wear is worse than with aluminium. And it wouldn't be shiny!

The material cost isn't that significant. Most of the cost is in the machining hours, turning most of the aluminium into swarf and transferring it to my vacuum cleaner!

I shall be at the Turf-Wars round six on 2nd Feb though. Or you could take a drive to Hesketh Bank. :D

Hi Clive,
Just sent you a pm with an order request! :)
One question; what is the weight difference compared to the plastic gearbox?
Thx.

Thanks for the order Kusal,

I don't have a definitive answer on the weight at the minute.

The original plastic drive-side casing weighs 8 grams and my prototype was 24 grams. However, when I manufactured the other half I took a lot of excess material out of it. But forgot to weigh it. :rolleyes:

My target is to get the drive side half down to the order of 15 grams.

However, I'm being asked to incorporate a lug on the front of the box to facilitate the mounting of a chassis stiffening strut! This is going to add a bit back on. I would think that a steel strut down to the top of the battery retaining plate will have more weight than the amount of aluminium that I'm able to shave off the casing.

Some people may be bothered about the weight and others may not.


Clive

No problem for the extra lug, then you have the option to use it or not.
So there will be approx 20 to 30 g extra weight, I do not see this an issue. I used to run with 104 g under the lipo and only recently switch to a plate of 54 g.
I do feel the difference but I can certainly live with extra weight if I can run with a gear dif!!!

Many thanks Kusal,

Payment received and thanks also for the feedback regarding the lug.

I will be making the first two units in parallel and will then have enough material in hand for one more. After that this offer will be closed.

I expect these first two to take up to four weeks to complete as I set up the production versions of the programming and incorporate the refinements that have been identified by the prototype.

Clive

Ok, thx.

T-Plate
 

I was wrong, DMS do not have the T-Plates and do not intend to try to obtain any in the next two weeks!

Can anyone suggest where I can purchase this item within the UK?

We have one in stock if this is what you are after?

http://insidelineracing.co.uk/new-pr...-plate-details

Kev

Thanks Kev,

That is the beast and I had already started one of your carts with it in but was going to ring in the morning to see if you really only had just the one.

How quickly could you supply four?

If I have to buy each one separately I'm going to wind up broke due to postage charges. I'm already charging less for the finished part than I will have to pay for them.

Regards

Clive

Hi Clive,

They should be with us on Monday. If you drop us and email to sales at insidelineracing.co.uk so we have your details we let you know when they are in.

Cheers
Kev

Magic!!

Will send email tomorrow.

Ta

Hi Kev,

I'm having trouble opening your web site. Is your internet groggy?

Clive

Hi Clive,

I don't think we've had any issues with our website today. Is it being blocked for some reason?

Kev

I will try again.

All working fine but it will not let me order four because it knows that you only have one at the minute.

If you want to send me an invoice for four then I will send the money via PayPal.

Cheers

Clive

PS Do you do a quantity discount? ;-)

Oil in geared diff
 

I put 12000 cST oil in the diff for the first run (That's all I could lay my hands on) but the posts that I have read seem to suggest that something lighter might be in order.

Is there any accepted wisdom on this?

T-Plates arrived this morning.

Thanks for the speedy service Kev.

Cheers

Clive

I run 2000 in my TM2 :)

Well you know me Tom, I probably couldn't tell the difference!


All three of the units available have now been purchased so the introductory offer of £50 is now suspended whilst I complete manufacture and then figure out how much I should really charge.

BTW I have established that the Durango geared diff will not fit as they seem to use a slightly larger module gear. Perhaps Kyosho?

First production version of the drive-side casing has weighed in at 14 grams. :thumbsup:

It's wonderfull. :drool:

Thank you.

I agree! :D

But then I am biased as it's my blood, sweat and tears that are going into it!

I hope to incorporate a chassis stiffener once I have mastered the art of manufacturing the boxes.

That weight is perfect! and the box too :drool:
Now getting scared in running it!!
Thx.

Hi

Sorry for the total noob questions but is this basically a better (because it's hand made in Britain) version of this?
http://www.eurorc.com/product/2254/t...ff-set-for-2wd

If it is can someone let me know what it's for? I did a bit of searching and all I could find online was that a ball diff was "better" than a gear diff... I'm not trying to say that's fact but I am very curious about it. I assume that the gear diff is a lot more hard wearing? Just without the on the fly adjustment you get with a ball diff??

Cheers
Ben

LOL
Not quite. The device that you have provided the link to is the kit of parts that will enable you to put the Team-C geared diff into the variants of the TC02 that have the motor behind the rear axle. There is no equivalent for the TC02C, the version with the motor in front of the axle. And that's what this is.

I think that the type of diff used is a matter of driver preference although there appears to me to be a leaning towards the geared diff on medium to high grip surfaces.

I'm not good enough at driving the darn things to be able to say anything else but I noticed that there was a reasonable outcry for the gear diff to be made available for the mid-motor car and so I set about making one.

I'm hoping that my customers will prove its worth because I certainly don't have the thumbs, eye-sight or reactions to do it.

Certainly, the geared diff is faff to adjust but once you have it set, ie the right oil in it, it is very reliable.

And my gearbox is much prettier! :thumbsup:

Ah ha! Thanks Clive, very helpful. I totally agree yours is much prettier :)

I'm only just getting into RC, well not counting toys as a kid. I've got a mad monkey and x2c roller to play about with but I think it might be a little while till I need one of these.

I have the Lupuz car, so the same as your Mad Monkey.

My original incentive to put the geared diff in was that the ball diff was a nighmare. The M2.5 screw through the middle kept breaking due to something being out of kilter. I eventually machined enough of it away to cure the problem and also made a little spherical seat for the head of the screw to sit on. This stopped the fatigue failures of the screw but by then the casing for the geared diff was on a roll!

The right-hand half of the casing weighed in at 12 grams and unit 001 is in the post. :thumbsup:

hay Clive if you want to try different diff oils in your car then I have a good selection with me, so just see us track side

Lee

oh gearbox looking awsome

Thanks Lee,

I have been too busy manufacturing the first batch to think about what oil I should put in the diff itself. It still has the thick treacle-like stuff that Phil sold to me but I do have some thinner tackle now.

I'm hoping that by the next Turf Wars event I will have a sample that you can take a good look at. Unit 001 was delivered today, down at the BRCA Open. Saw a lot of familiar faces, which probably explains why today's Turf Wars was below the 72 limit last time that I checked.


Cheers

Clive

I have been asked if this gearbox would fit an Akula chassis and I think that the answer is "Probably" but it will require six holes to be drilled in the chassis and countersunk from the underside.

I don't have an Akula to measure but the attached sketch shows where my fixing points are located.

My datum is the middle of the back face of the gearbox.

Units 1 and 2 are now with their new owners and Unit 3 should be half done this weekend. Should anyone else want one of these then it will have to be on the basis of say £80 for the box, £10 for the T-Piece and £10 for the Rear Brace. If people supply me with the T-Piece or Brace then I will do them at £5 and £4 respectively.

The box itself is still spectacularly under priced but I enjoy making them. :) Also, it is possible to modify the brace if you are handy with a Dremel and don't mind if it looks a wobbly.

I may soon also be able to offer a system of anti-squat and toe adjustment for the TC02C and a rear brace with an extra set of holes for the top links.

That's a lovely looking gearbox Clive, great work!

Kev