DT-03(T) O-Rings in drive cups?

[Peter_B]

So I've built my recently acquired DT-03T Aqroshot and during the build instead of the standard kit plastic drive shafts and cups I fitted metal cups and dog bones. As I was fitting them it occurred to me that other cars I have with dog bones - Boomerang and Twin Detonator - have O-rings in the drive cups (at least at the gearbox end).

I didn't have any spare O-rings to hand so I assembled without and ordered some to put in.

Then I had a look at a manual for a DT02 (can't remember which model) which had the metal cups and dog bones in the kit, and that didn't show any O-rings.

There is quite a bit of movement in the drive shafts as they stand, without O-rings.

Should I put some O-rings in the cups?
What have others done that have fitted the dog bones?

[TurnipJF]

I faced a similar dilemma when building mine. I looked at the Desert Gator manual, which uses the same metal components and shows no O-rings in the cups, but like you I was concerned about the looseness of the dogbones. In the end I put a single soft red O-ring in each of the gearbox drive cups, which seems to work well, allowing some play, but not an excessive amount.

[Peter_B]

Thanks, I've got some o-rings now so I'll put some in. I guess they can't hurt as long as nothing binds.

[gizard]

I put these in:

https://tamico.de/Tamiya-Urethan-Bushing-10-Stk-HotShot-9805922

 

[Peter_B]

14 minutes ago, gizard said:

I put these in:

https://tamico.de/Tamiya-Urethan-Bushing-10-Stk-HotShot-9805922

 

Interesting. Not seen those before.

Do they just sit in the drive cups in the same way as o-rings?

[gizard]

22 minutes ago, Peter_B said:

Interesting. Not seen those before.

Do they just sit in the drive cups in the same way as o-rings?

Yes - I discovered them as a set came with the Egress I built - they are softer than an o-ring of course so will compress better, however if you need them to be thinner you can just slice them in half. - I took some out recently when cleaning or something - and other than being no longer white they where pretty much still the same - ie had not been crushed and therefore ineffective. Before finding that you could buy them on there own I tried to use some bits of cut to shape blue packing foam in another model but these remained compressed permanently after a while.

I too hate the slope in the drive shafts / dog bones as I'm sure it increases the rate of wear, I try and use as little grease on exposed parts as possible as it attracts girt and dust too much.

[gizard]

hmm looking at the Egress Manual - they only supply them for the front - and they are not in the 2011 manual for the Avante at all - I've yet to build my Avante to see if the Kit I have is any different to the Online Manual I have found.

[Peter_B]

I can't find any of those for sale anywhere other than Tamico.

I think I'll just go with an o-rings or 2 for now.

[gizard]

I think I got my last lot from modellbau-seidel which isn't much help.

 

Wheelspin list them but no stock. Fusion also list - not sure whether they have stock.

[Rb4276]

3 hours ago, Peter_B said:

I can't find any of those for sale anywhere other than Tamico.

I think I'll just go with an o-rings or 2 for now.

The dn-01 zahhak has pink urethane bushings part 53577 that i used in my drivecups until i added cvds

[Peter_B]

8 minutes ago, Rb4276 said:

The dn-01 zahhak has pink urethane bushings part 53577 that i used in my drivecups until i added cvds

Thanks. Those ones I can get.

[Tamiyabigstuff]

You can get an assortment of 'O' rings from places like Maplins or ebay - they come in a plastic box with compartments for the different sizes and are quite cheap - useful to have around for various things.  

[Juggular]

I should try urethane.  I didn't like how hard O-rings sat in Bigwig. 

So I cut a spring from a rollerball pen and put it in Bigwig drive cups.  I have no idea how long they will last, but for now, they seem to do the trick.