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Honza

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  1. Doesn't "metric 48p" mean 0.5? Since 48p is about 0.53 metric - It's too big difference, but 0.6 metric is interchangeable with 42p (some Traxxas gears) an 0.4 is almost same as 64p
  2. I was thinking of F104, because it can fit low RPM 540 motor or 380 with extra gearbox, which should provide enough power at low speed. Width isn't issue, gearbox itself is narrow, custom axle made from 5mm rod can place wheels very close to it (it just needs to drill hexes and wheels to 5mm) Non powered axles can be made similarly, no need to buy whole chassis. When I look at paris metro boogies, it looks like mini4wd. Is there something slightly bigger?
  3. If you don't need steering, suspension etc, M-chassis is too complicated. I'd use rear pod from F103/104, no differential, simple axle with exact width you'll need. Real trains use very similar layout, so it'll have some scale aspect, too.
  4. Tamiya alu&carbon cassis are always beautiful. Great build Yes, front dogbones are made from some sort of hardened steel, they need to be harder than rears to withstand large angles and vibration caused by steering. Blue are made out of aluminium to save weight.
  5. It depends on how clean is place where you plan running. If there's lot of rocks, chance that some get into belt is pretty high. If there just some pebble here and there, you can run it safely. Shaft drive is safe to run even in sand and dust, which would kill belt drive without additional covers.
  6. If you mean those small ceramic capacitors, then yes, brushed motors generate quite a lot of interference without them.
  7. Weird prices, TB05 pro costs 190USD on rcmart vs 115USD of TT02S. TT02S lacks proper steering with bushings, adjustable motor mount, adjustable rear toe, universal shafts and sealed differentials. TB05 sounds like better deal. And it has option for front motor position, which is nice feature. Maybe you should compare base TB03/04, if you can find any, not R-version. Base versions are closer to TT02S.
  8. Well, fluids acts non-linear overall. It can be expected that there will be point where turbulence occurs and drag increases significiantly. They didn't reach speed needed to show that behaviour, because test was about different thing. CVAs have large hole area, which needs high viscosity oil to achieve atleast some damping effect. And high viscosity fluid keeps laminar flow for longer. TRF piston should, at least in theory, requie lower viscosity oil for same damping effect, which should develop turbulent flow sooner, which is also aided by higher speed of fluid caused by smaller area of holes. And that's what I need, because when I set damping force to keep car from bottoming out on jump, it's too stiff for small bumps. EDIT: this pdf confirms what I thought. Interesting pages are 15 and 22, where is shown non linearity caused by high speed and low viscosity respectively. https://drive.google.com/file/d/0B-9Xopgk6BDNeTBRMEVkcnFDZ28/view Thanks for tip, CC01 dampers look good and affordable. Are plastic parts (nylon guides) replacable by TRF ones?
  9. Did you read summary at end? They didn't test high velocity when dampers "pack" - if I recall corectly, packing is when flow changes from laminar (linear damping force) to turbulent (exponential damping). They aknowledge different performance during high-speed compression, but they tested C:R ratio during normal (linear) damping. Hole size should have effect on exponential damping.
  10. Well, 10% of price means i don't need to spend another 90% for fancy shocks I need four dampers of CVA mini size for my rally car. Tamiya makes set of 4 cva mini, but no such set of TRF dampers. I'd need two pairs of front buggy dampers, which would be too expensive.
  11. That's great info, thanks Is difference between 3 hole TRF and one hole CVA noticeable?
  12. a little bump... I measured CVA2 mini bodies and their pistons - while bodies have exactly 10mm in diameter, pistons are 0,3mm smaller. That's area of 4,6mm2, while holes in CVA dampers have 1,5mm2... no wonder they don't pack. now to my question - would TRF pistons 53572 or 53573 fit better? it could be nice, cheap upgrade
  13. There will be new kits with bodies. But they will be based on entry-level M05/M06, instead of M07/M08 M08 is not succesor of M06. It's different class, the difference is same as between TT02 and TB05.
  14. If Tamiya continues with current tactics, there won't be any M08 kit with body. Racing level kits (TB05, TA07, M07 and some hopped up TT02) are produced as chassis only kits.
  15. Friend printed it for me, I only made 3D model. It's printed from PET-G, strength isn't issue - as you can see, Tamiya part broke, too.
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