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  1. Bush mechanic

    FS: Yuba Monkey Bars, cargo bike carrier for two children (Australia)

    Bought from Cargocycles in 2021, sat in the box for the first 18 months because I start too many projects, fitted for one ride only to find the kids had outgrown it, and now it's just taking up space! Good condition, you will see a few scratches on the telescoping section of the tubes and marks...
  2. Bush mechanic

    Replacing axle on a GMAC

    Whether it is just normal wear and tear or other factors too, the axle threads on my GMAC look pretty awful. I popped the non-drive side cover off while I had it off the bike and had a quick look inside while I was at it, quite impressed actually that there is very little visible wear on the...
  3. Bush mechanic

    Spreading rear dropouts. How far is too far?

    How far have you spread the rear stays on a steel frame? I'm not talking about 138mm axles in 135mm dropouts here! Who has done 135mm to 150? 170? How far did you bend it to set the frame there, and has anyone had their frame fail? There are threads on techniques and individual cases, but it's...
  4. Bush mechanic

    Trying to choose an Ultrasonic cleaner that is not cheap and nasty

    Not really sure where to post this, hopefully this will do. I need something with a minimum 5L capacity for tools, toys, PCB's etc. Has anyone here tried any different brands they can compare? It seems the market is flooded with the cheap 'Vevor' brand units which have fairly poor reviews if...
  5. Bush mechanic

    1st battery build (20s2p) - collective advice?

    Lads, I'm hoping to gear up and start my first DIY battery build in the not too distant future. I do still need to collect the equipment needed but am keen to start soon. I am just tired of paying top dollar for what usually ends up still not being quite the right shape, capacity, cell type, and...
  6. Bush mechanic

    26" wheels in 700c frame

    I know it's been discussed in many places on the internet, from 96er' to 69er's and the rest, but I'm wondering if anyone here has tried 26" wheels on a 29" frame, in particular with tyres that bring those wheels up to something close to 700c? For some background, I've been eyeing off a Marin...
  7. Bush mechanic

    Electrified (vendor of ebike parts, Australia) - Has anyone used them?

    Just wanting to know if anyone has feedback on this business, are they reputable, general experiences, etc if you have used them? They seem to sell a decent range including being a re-seller of Grin, making me think they are OK... Just wondering if anyone has first hand experience...
  8. Bush mechanic

    Going from 52v to 72v on a Phaserunner - effects on lower speed performance?

    Not quite sure how to phrase this, so hopefully this makes sense: I've been running 52v (14s) on everything for years, but have the opportunity to buy a new battery and the itch to reach higher speeds! 52V gets me to a little over 40km/h on the Gmac, Bafang, and Crystalyte motors in a 26" wheel...
  9. Bush mechanic

    Suggest me a strong 26" rim ~40mm width

    I've built two wheels in the past using Alex DX32 rims which have held up great, sadly this doesn't seem to be sold anymore. Also have two motors in the DM24 which has also been fine, but is a bit narrower. I run schwalbe big apples and fat Frank's 26 x 2.35 but for my next build I'd like the...
  10. Bush mechanic

    Current (2023) recommendations for trustworthy ebike battery vendors

    As per title, this has obviously been discussed a lot over the years, but what are current suggestions for trustworthy high-power batteries, ready to plug and play? Not too concerned about form factor, I can work with most things as it is for a large cargo bike. I've had only positive...
  11. Bush mechanic

    Battery repair help...replacement for damaged a123 26650 M1A cell?

    Sad to say I have somehow damaged my old Em3ev (cell man) triangle battery pack whilst in storage. This was always a brilliant pack, bought about 10 years ago, 16s5p (52v nominal using 3.3v LiFePo a123 26650 M1A cells. It was used lightly for about 5 years before I charged it and left it in...
  12. Bush mechanic

    Sources for MAC motors other than ebikes.ca (come at me bro 👊👊 )

    Spare the abuse, I love what Grin do and I've dropped plenty of $ over the past decade so I don't feel too bad about asking this openly 😉. Sadly the shipping, exchange rate, and customs fees are just absolutely punishing at the moment living in Australia. Also while I like my G-MAC I'd really...
  13. Bush mechanic

    Bafang G310 clutch not engaging?

    Anyone using the small Bafang G310 or G311 geared hubs, have you had issues with the clutch either intermittently or completely failing to engage? This was kinda funny at first as it happened only very occasionally, motor would spin freely like you were revving a bike, with a turbo spool sound...
  14. Bush mechanic

    Bosch Performance Line CX gen 4 modding

    I've come across a few threads regarding modifying (or more precisely, being unable to modify!) the very popular Bosch CX performance line motors, and I am wondering if anyone out there has any more recent and more successful data to share. The consensus seems to be that Bosch is un-hackable...
  15. Bush mechanic

    Thoughts on Tern GSD with Rohloff E14 electronic hub?

    I feel a bit ridiculous asking this here, where we all tinker with our old bikes, and having built my own bikes from bits I spent months trying to save a couple of $$ on, held together by cable ties in way too many places, and info from this forum. Not that I would change that 😉. A close...
  16. Bush mechanic

    Pushing 20A Grinfineon above 60V?

    Without talking too much about this being outside of the specs and how it voids the warranty, has anyone run the 20A grinfineon that comes with the G310 kits on higher than 14S? I've used mine on 14s for years never had an issue, but am looking at buying the newer Dewalt Flexvolt tools that...
  17. Bush mechanic

    Phaserunner Vs. 40A Grinfineon (10T Gmac)

    Hey everyone, I know this has been written about but there seems to be a lot of conflicting information and I just can't get a clear picture of whether this is a yes or a no... Can the Phaserunner controller from Grin provide similar performance to a 40A 12-Fet controller such as the Grinfineon...
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