Mechbuilds Posted September 1, 2017 Posted September 1, 2017 (edited) What's the difference between this: Open center or this: Closed center I'm going to order at least 3 differentials and some gears for my upcoming project and i was just wondering what's the difference between these two diffs and which one should i choose? EDIT: Also if anybody has any tip where i could find the cheapest order to get differnetials and other assorment of technic gears and stuff shipped to finland, i'm all ears. Currently i've been using brick owl and it's been a reliable site. Although the postage some times is just crazy. Edited September 1, 2017 by Mechbuilds Quote
Saberwing40k Posted September 1, 2017 Posted September 1, 2017 Choose what's cheaper, there is no functional difference. Quote
1gor Posted September 1, 2017 Posted September 1, 2017 Usually the cheapest way is to buy a set that has them because you will have additional parts. Beleive me there is never enough of LEGO parts Quote
skppo Posted September 1, 2017 Posted September 1, 2017 Seems like the difference is that the open center one uses slightly less plastic as the block part between the internal gear spots is hollowed out. I've used Bricks & Pieces through Lego customer service before to order individual parts to Finland. Probably not the cheapest option though. Quote
TechnicRCRacer Posted September 1, 2017 Posted September 1, 2017 (edited) I have had problems with the open-center diffs. For me, the bevel gears next to the gear end of the diff fall out easier because of a slightly increased gap. I had to reinforce the axle with bushings and other parts to keep it from falling out. The closed diff has no inner slot on the gear side, while the open center does. Edited September 1, 2017 by TechnicRCRacer Quote
suffocation Posted September 1, 2017 Posted September 1, 2017 I think the average price of diffs (second-gen ones, at least) is lower on Bricks and Pieces now than it is on Bricklink. In any case, the former ensures you're getting new, original parts. I'd get a handful of second- and third-generation diffs - they have plenty of uses that transcend traditional vehicle drivetrains. Quote
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