Hey guys some news regarding Urethane Gear Drive. There were some design changes and some new stuff happening with this drive.
A design was changed to a sealed aluminium housing with a choice to submerge gears in oil for silent operation. (Oil fill port, V-Ring included). Now fits 6374 motors on all angles thanks to included CNC machine 230mm Caliber II style hanger made out of 7075 Aluminium with Titanium axles. (Maybe would fit 6380 at some angles).
FatBoy 230 Hanger will be available to buy separately for those who want to use 6384 with wider belts (should work with all Calibre || style mounts)
Prices would be:
- FatBoy Mini Drive Train + FatBoy 230 Hanger would be 400ā¬ (excl. VAT) + Shipping
- FatBoy 230 Hanger 100ā¬ (excl. VAT) + Shipping
Prices can be decreased if we could make a group buyā¦
Now several questions:
Would you be interested in buying one?
If there would be a group buy would you participate in buying it?
Depending on answers we will decide to make this or not, because on the standard TB218 hanger without sacrificing gear quality and running into clearance issues is not really possible to run bigger motors than 6355. It does not apply to all decks but most popular decks and angles will run into issues. We donāt want to release āworkingā product to the market.
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Would it be possible to make the hangers like a few mm wider so the new 6380ās could fit at any angleā¦?
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Itās not few mm, difference is like 12mm
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Oh shitā¦ But 6380ās still fit at some angles you said. Can you elaborate on that please? 
At horizontal position to the axle then motors doesnāt touch the baseplate you can fit what you want in the center, lift up by 15Āŗ and then you turn it will hit baseplate.
So for the dual 6380ās the hanger would need to be 242mmā¦ Damn thatās pretty wide, lol.
I recall discussing making a extended length hanger and you were saying that with the extra length you would be worried about the hanger potentially being able to bend or warp. Have you gone with steel like I suggested for the hangers or did you do something else to prevent this from potentially happeningā¦?
We are going with 230mm which is 12mm longer 6mm on the sides not noticeable difference plus CNC machined 7075 which is much stronger than casted and also titanium axles with normal thread at then end 
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Would it be possible to order a hanger thatās 242mm from you guys if one wanted to run dual 6380ās?
Maybe, but then the cost would be not 100ā¬
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Do you have just an estimate of what that might cost? $150, $200? Just an estimate, no one is gonna come to you and say āwell I saw you said it be this priceā. Lol
About how much further would the motors need to be away from the trucks (length of the gear drives) so that regardless of what size 63mm motor, they could all be used without any clearance issues? I read one of the beta testers posts earlier he said he managed to avoid the clearance issue by milling his own base plate and using low profile bolts, and a few other thingsā¦ Just curious how much it would take in terms of extra length to where all these clearance issues could be resolved.
Canāt tell you nothing, because I donāt really know, and I think single unit will not be available, would require more than one unit to make it.
Regarding size, take now current size for e.g. 84-74 = 10mm and multiple by 2 thatās how much longer hanger needs to be
No I didnāt mean clearance from the hanger, but if the gear drive put the motor a little further apart, how much further would they need to be so motor clearance wouldnāt be an issue, using regular TB 218 trucks / hanger?
I donāt understand what you want @uigiroux
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Canāt you do all this with the drive gear youāre making? Seems like the thing to do with one of the prototypes
Which machining service do you use? 100 Euro/hanger sounds relatively cheap. Why are you using titanium over e.g. 17-4 ph stainless steel for the axle stubs and whatās the hanger profile dimensions?
Cheers
Never mind. Yes I can do that with our design, I was just curious how much clearance there was with with the base plate.
Submerging in oil sounds very cool, I hope it works out!
Will there be option to use TB 218 or standard Caliber II? Some people donāt need that much power (dual 6374) and can definitely get away with dual 6364 or even single drive.
We machine stuff on our own, apart titanium axles. We are using titanium to make the axles stronger as they are long and on wider stance can bend. I have seen many TB218 with bend axlesā¦ Hanger profile is similar to Caliber but without full bevel, but it should fit all mounts as all key surfaces match up
@rpasichnyk I think yes, but donāt know yet about buying single driveā¦
So if you dont want/need the hanger does that make the price 300 euro? And is that price for a single or dual setup?